DARC Seminar Series
Also see: Meteorology Monday external seminars, Meteorology Tuesday internal lunchtime seminars
Seminars occur mainly during term time on Wednesdays at 11:00-12:00 unless otherwise indicated. To be added to the DARC mailing list to be informed about future meetings, or if you have any questions about the DARC seminar series, please email Ravi Shankar Nemani. Alternatively, you can add yourself to the DARC mailing list here (must be on UoR network).
Seminars are now in hybrid form, with access available for both in person and online.
2025
| Date | Speaker | Location & Time |
| Fri 12 Dec 2025 | DARC and CADRE program joint seminar | *3PM* |
| Wed 10 Dec 2025 | Talk by Dr. Suping Nie (Visiting researcher from China Meteorological Administration) | BH 1L43 11AM |
| Wed 03 Dec 2025 | Talk by Dr. David Fairbairn (ECMWF) – Online | BH 1L43 10AM |
| Wed 26 Nov 2025 | “Advancing the Monitoring of the Land Water and Carbon Cycle Through Data Assimilation: From Peatlands to Agroecosystems” – Dr. Michel Bechtold (KU Leuven, Belgium) Online | BH 1L43 11AM |
| Wed 19 Nov 2025 | DARC and Nanjing University joint seminar | BH 1L43 9:30AM |
| Wed 12 Nov 2025 | “Recent developments in JEDI” – Dr. Yannick Trémolet (JCSDA, Boulder) | BH 1L43 11AM |
| Wed 12 Nov 2025 postponed | Talk by Dr. David Fairnbairn (ECMWF) – postponed to 03 Dec 2025 | BH 1L43 11AM |
| Mon 10 Nov 2025 | cancelled Group meeting with James Taylor, RIKEN | BH 1L43 2-3.30PM |
| Wed 29 Oct 2025 | “Recent development and applications of AI-empowered data assimilation operational forecasting models (AI-EnKF and 4D-Var)” – Dr. Fangxin Fang (Imperial College London) | BH 1L43 11AM |
| Fri 24 Oct 2025 | DARC and CADRE program joint seminar | BH 1L43 3PM |
| Wed 22 Oct 2025 | DARC and Nanjing University joint seminar | HP 175 9:30AM |
| Wed 15 Oct 2025 | “Treating different timescales in weakly-coupled variational data assimilation” – Prof. Amos Lawless (DARC) | HP 175 11AM |
| Wed 17 Sept 2025 postponed | “Recent developments in JEDI” – Dr. Yannick Trémolet (JCSDA, Boulder) – postponed | HP 175 11AM |
| Wed 10 Sept 2025 | “JEDI Tutorial & Discussions” – Guannan Hu (DARC) & Met Office Staff | BH 1L43 *10AM* |
| Tue 22 Jul 2025 | “Nonlinear data assimilation and machine learning” – Prof. Peter Jan van Leeuwen (Colorado State University) | BH 1L43
**3PM** |
| Mon 21 Jul 2025 | “A clustering-based localisation and a kernel extension of the Ensemble Transform Kalman Filter” Ehouarn Simon (Institut de Recherche en Informatique de Toulouse) |
BH 1L61 2PM |
| Wed 16 Jul 2025 | “Investigating observation impacts in the Met Office’s global ocean forecasting system” – Dr. Jennifer Waters (Met Office, Exeter) | BH 1L43
11:15 AM |
| Fri 11 Jul 2025 | Takemasa Miyoshi RIKEN’s activities to integrate DA and AI/ML |
1L43 |
| Wed 02 Jul 2025 | cancelled | 1L43 |
| Wed 25 Jun 2025 | postponed | HP 108 |
| Wed 18 Jun 2025 | Luis Olivera | 1L43 |
| Wed 11 Jun 2025 | DARC course | 1L43 |
| Wed 04 Jun 2025 | Josef Schroettle | 1L43 |
| Wed 28 May 2025 | Nina Raoult | 1L43 |
| Wed 21 May 2025 | Xiang Li | 1L43 |
| Thu 15 May 2025 | Joe Wallwork on FTorch | HP175 |
| Wed 14 May 2025 | Dale Barker | 1L43 |
| Wed 07 May 2025 | Dale Partridge | 1L43 |
| Wed 30 Apr 2025 | cancelled – EGU | |
| Wed 23 Apr 2025 | cancelled – Easter | |
| Wed 16 Apr 2025 | cancelled – Easter | |
| Wed 09 Apr 2025 | cancelled – ECMWF Seminar DA workshop | |
| Wed 02 Apr 2025 | Liang Feng | 1L43 |
| Wed 26 Mar 2025 | Jonathan Ward | 1L43 |
| Wed 19 Mar 2025 | NJU+DARC | 1L43
*time 09:30* |
| Wed 12 Mar 2025 | Rossella Arcucci | 1L43 |
| Wed 05 Mar 2025 | NJU+DARC | 1L43
*time 09:30* |
| Wed 26 Feb 2025 | NJU+DARC | 1L43
*time 09:30* |
| Wed 19 Feb 2025 | Burba Mareike | 175 Harry Pitt, 14:00 |
| Wed 12 Feb 2025 | Eviatar Bach | 1L43 |
| Wed 05 Feb 2025 | Training planning meeting | 1L43 |
| Wed 29 Jan 2025 | Internal meeting | 1L43 |
| Wed 22 Jan 2025 | Arthur Filoche
Machine Learning with 4DVAR loss function |
9:00 am – Brian Hoskins 1L43 |
2024
| Date | Speaker | Location |
| Wed 11 Dec 2024 | Land Surface DA meeting | |
| Wed 4 Dec 2024 | Sukun Cheng | Brian Hoskins 1L43 |
| Wed 27 Nov 2024 | cancelled | |
| Wed 20 Nov 2024 | cancelled due to sickness | Brian Hoskins 1L43 |
| Wed 13 Nov 2024 | cancelled – internal meeting | |
| Wed 6 Nov 24 | Chris Wilson | Brian Hoskins 1L43 |
| Tue 5 Nov 24 | Guannon Hu | online |
| Wed 30 Oct 24 | Benoît Loucheur | Brian Hoskins 1L43 |
| Wed 23 Oct 2024 | cancelled – ISDA | |
| Wed 16 Oct 24 | Lewis, Ollie | Brian Hoskins 1L43 |
| Wed 9 Oct 24 | Rishabh Bhatt
Parallel in time algorithms for data assimilation |
Brian Hoskins 1L43 |
| 02nd October 2024 | Internal group meeting Initial meeting for the semester |
Harry Pitt 175 |
| 29th August 2024 | Ariadna Perello-Achfari (Météo-France) Modelling of the observation error precision matrix |
Brian Hoskins 1L43 |
| 22nd July 2024 | Shunji Kotsuki (Chiba University, Japan)
Quantum Data Assimilation: A New Approach to Solve Data Assimilation on Quantum Annealers |
Brian Hoskins GU01 |
| 26th June 2024 | Guannan Hu (UoR)
Assessing the influence of observations in ensemble-based data assimilation systems |
Brian Hoskins 1L43 |
| 19th June 2024 | Internal group meeting – LYX tutorial | Brian Hoskins 1L43 |
| 12th June 2024 | Cancelled | |
| 5th June 2024 | Gwyneth Matthews (UoR)
Enhancing River Streamflow Forecasts: A Data Assimilation Approach for Bias Correction Across Gauged and Ungauged Locations |
Brian Hoskins 1L43 |
| 29th May 2024 | Robin Armstrong (Cornell University)
A Quadrature Method for Ensemble Kalman Filtering with Model Space Localization |
3pm -Brian Hoskins 1L43 |
| 22nd May 2024 | Cancelled – Adjoint Workshop | |
| 15th May 2024 | Internal group meeting – Adjoint Workshop practice | 9am – Brian Hoskins 1L43 |
| 8th May 2024 | Cancelled – NCEO and DARC DA course | |
| 1st May 2024 | Internal group meeting | Brian Hoskins 1L43 |
| Friday 26th April 2024 | Peter-Jan Van Leeuwen (Colorado State University)
Iterative ensemble smoothers in coupled nonlinear multiscale models |
Brian Hoskins 1L43 |
| 24th April 2024 | Marc Bocquet (CEREA)
Bridging Classical Data Assimilation and Optimal Transport |
Brian Hoskins 1L43 |
| 17th April 2024 | Jianyu (Richard) Liang (RIKEN)
Analyzing the Instabilities in the Venus Atmosphere Using Bred Vectors |
9am – Brian Hoskins 1L43 |
| 20th March 2024 | Boštjan Melinc (University of Ljubljana)
3D-Var Data Assimilation in the Latent Space of a Variational Autoencoder |
Brian Hoskins 1L43 |
| 13th March 2024 | Jemima Tabeart (Eindhoven University of Technology)
Preconditioning covariance matrices for ocean data assimilation |
Brian Hoskins 1L43 |
| 6th March 2024 | Cancelled | 9am – Brian Hoskins 1L43 |
| 28th February 2024 | Ieuan Higgs (UoR)
Complex network and machine learning to improve marine ecosystem modelling and data assimilation |
Brian Hoskins 1L43 |
| 21st February 2024 | Cancelled – NCEO researchers forum | |
| 14th February 2024 | Internal group meeting | Brian Hoskins 1L43 |
| 7th February 2024 | Simon Driscoll (UoR)
Emulating melt ponds on sea ice with neural networks |
Harry Pitt 175 |
| 31st January 2024 | Internal group meeting | Brian Hoskins 1L43 |
| 24th January 2024 | Bruce Ingleby (ECMWF)
What happens with too many observations in 4DVar? Lessons from Mode-S |
Brian Hoskins 1L43 |
| 17th January 2024 | Tsz-Yan Leung (MetOffice@Reading)
The Control-Pert method of ensemble data assimilation and its implementation in OOPS |
1pm – Brian Hoskins 1L43 |
2023
| Date | Speaker | Room (Meteorology) |
| 6th December 2023 | Chris Thomas (MetOffice@Reading)
Next-generation observation processing and data assimilation at the Met Office |
1L43 |
| 29th November 2023 | Cancelled | |
| 22nd November 2023 | Olivier Goux (CERFACS)
Accounting for correlated observation error in variational data assimilation |
1L43 |
| 15th November 2023 | Antara Dasgupta (RWTH Aachen)
Data-Driven Computing in Flood Inundation Mapping, Modelling, and Forecasting |
1L43 |
| 8th November 2023 | Internal group meeting | 1L43 |
| 1st November 2023 | Xiaodong Luo (NORCE)
Ensemble data assimilation for subsurface characterization |
1L43 |
| 25th October 2023 | Patricia De Rosnay (ECMWF)
Coupled data assimilation activities at ECMWF |
1L43 |
| 18th October 2023 | Cancelled – ISDA conference | |
| 11th October 2023 | Adam El-Said (KNMI)
Towards Full Flow-Dependence: New Temporally Varying EDA Quotient Functionality to Estimate Background Errors in Cerra |
1L43 |
| 4th October 2023 | Internal group meeting | 1L43 |
| 19th July 2023 1.10pm followed by discussion |
Craig Bishop (University of Melbourne and Bureau of Meteorology) Earth-System 4DVar, ensemble-based model gradients, and “near-bound” model variables |
GU01 (Sutcliffe Lecture Theatre) or Please e-mail r.n.bannister@reading.ac.uk for on-line link |
| 21st June 2023 | Peter Jan van Leeuwen (UoR/Colorado State) Fully nonlinear high-dimensional data assimilation with the Particle Flow Filter/Smoother |
Maths 100 |
| 14th June 2023 | Chun-Hsu Su and Peter Steinle (Australian Bureau of Meteorology) Data assimilation at the Bureau of Meteorology |
1L43 |
| 7th June 2023 | Internal group meeting |
1L36 |
| 31st May 2023 | Cancelled – May half term | |
| 24th May 2023 | Georgy Shapiro (University of Plymouth) Model-to-model data assimilation and its application to the study of Lakshadweep Sea (Indian Ocean) |
1L43 |
| 17th May 2023 | Jochen Broecher (UoR) On the dynamical reconstruction of surface fluxes in geophysical flows |
1L43 |
| 10th May 2023 | Cancelled – NCEO DA course | |
| 3rd May 2023 | Adam El-Said (KNMI) Towards Full Flow-Dependence: New Temporally Varying EDA Quotient Functionality to Estimate Background Errors in Cerra |
1L43 |
| 26th April 2023 | Cancelled – EGU | |
| 19th April 2023 | Informal coffee and chat |
1L43 |
| 22nd March 2023 | Cancelled – NCEO researchers’ forum | |
| 15th March 2023 – 9am UK time | Rakesh Teja Konduru (RIKEN) Challenges in the high-frequency microwave satellite radiances assimilation using NICAM-LETKF in the OSSE framework |
|
| 8th March 2023 | Daisuke Hotta (ECMWF) Under-recognised subtlety of own-analysis verification and a method to quantify its uncertainty. Gaussian assimilation of non-Gaussian image data via pre-processing by Variational Auto-Encoder (VAE). |
|
| 1st March 2023 | Cancelled – Quo Vadis | |
| 22nd February 2023 | Internal group meeting, Brian Hoskins, 1L43 | |
| 15th February 2023 | Harriet Turner (UoR) Data assimilation in the solar wind, Brian Hoskins, 1L43 |
|
| 8th February 2023 | Helen Hooker (UoR) A multi-system comparison of forecast flooding extent using a scale-selective approach, Brian Hoskins, 1L43 |
|
| 1st February 2023 | Cancelled | |
| 25th January 2023 | Lars Nerger (Alfred-Wegener-Institut) A hybrid nonlinear-Kalman ensemble transform filter for data assimilation in systems with different degrees of nonlinearity, Edith Morley, 288 |
|
| 18th January 2023 | Alison Fowler (UoR) Treatment of model bias in Marine Biogeochemistry Data Assimilation, Edith Morley, 288 |
|
| 11th January 2023 | Cancelled – NCEO staff meeting |
2022
| Date | Speaker |
| 14th December 2022 | Internal Xmas Meeting, Maths common room, 12.00-14.00. |
| 7th December 2022 | James Taylor, Arata Amemiya, Yasumitsu Maejima (RIKEN, Japan) – online only |
| 30th November 2022 | Cancelled – UCU strikes |
| 23rd November 2022 | Takemasa Miyoshi (RIKEN, Japan), Maths 108 |
| 16th November 2022 | Kay Shelton (JBA, UK) – Joint seminar with Water@Reading |
| 9th November 2022 | Cancelled – DAOS/PDEF |
| 2nd November 2022 | Philipp Griewank (University of Vienna, Austria), Maths 104 |
| 26th October 2022 | Femi Kolade, Maths 108 |
| 19th October 2022 | Internal group meeting, Maths 108 |
| 12th October 2022 | Remy Vandaele (University of Reading, UK), Edith Morley 175 |
| 5th October 2022 | Ross Bannister (University of Reading, UK), Maths 215 Inverse modelling for trace gas surface flux estimation |
| 28th September 2022 | Assimilatte – Internal coffee morning |
| 15th June 2022 | Internal discussion |
| 8th June 2022 | Cancelled – ISDA |
| 1st June 2022 | Varun OJha (University of Reading, UK) Sparse Neural Computation |
| 25th May 2022 | Cancelled – EGU |
| 18th May 2022 | Internal discussion |
| 11th May 2022 | Ibrahim Hoteit (King Abdullah University of Science and Technology, Saudi Arabia) Forward and Inverse Tracking of Oil Spills Under Ensemble DA Uncertainties with Real World Applications in the Red Sea |
| 4th May 2022 | Marie-Amélie Boucher (Université de Sherbrooke, Canada) Machine learning-based data assimilation for hydrological forecasting |
| 27th April 2022 | Alejandro Hermoso (ETH Zürich, Switzerland) Ensemble prediction strategies for Mediterranean high-impact weather: Bred vectors and stochastic physics |
| 20th April 2022 | Internal discussion |
| 23 March 2022 | Tsz Yan Leung (University of Reading, UK) A new smoother method for treating different timescales in coupled data assimilation systems |
| 16 March 2022 | Cancelled |
| 9 March 2022 | Cancelled |
| 2 March 2022 | Joshua Lee (National Environment Agency, Singapore and University of Reading, UK) Hybrid ensemble-variational data assimilation in ABC-DA within a tropical framework |
| 23 February 2022 | Mart Ratas (University of Reading, UK) The importance of superspreaders on the spread of the global COVID-19 pandemic |
| 16 February 2022 | Adam El-Said Towards full flow-dependence: new temporally varying EDA quotient functionality to estimate background errors in the new Copernicus European Regional Re-Analysis (CERRA) |
| 9 February 2022 MPECDT / SCENARIO DTP Seminar Day (11:00-15:00, in-person only at Palmer Building Room 109) |
11:00-11:45 Samuel Hatfield (ECMWF) Millibars and Megabytes 12:00-12:45 Christopher Maynard (University of Reading and Met Office, UK) The challenge of weather and climate prediction on the next generation of supercomputer 14:00-14:45 Joanne Waller (Met Office, UK) Can we handle spatial observation error correlations in atmospheric data assimilation? |
| 2 February 2022 | Ivo Pasmans (University of Reading, UK) An ensemble of 4DVARs (En4DVar) data assimilation system for the ocean off Oregon-Washington, USA |
| 26 January 2022 Special time: 15:00 (Joint seminar with the SPATE research group) |
Jose Arnal (University of Toronto, Canada) Toward data assimilation of the solar wind: a variational approach for 1D ideal magnetohydrodynamics |
| 19 January 2022 | Lee Hawkness-Smith (Met Office, UK) The road to operational direct assimilation of radar reflectivity in 4D-Var with the UKV configuration of the Met Office Unified Model |
| 12 January 2022 Special time: 15:00 |
Javier Amezcua (University of Reading, UK) Assimilating infrasound measurements to constrain stratospheric variables |
2021
| Date | Meeting type | Speaker |
| 8 December 2021 | No seminar | (To avoid conflicts with the university’s graduation ceremonies) |
| 1 December 2021 | Invited Speaker | Sebastian Reich (University of Potsdam) Statistical inverse problems and affine-invariant gradient flow structures in the space of probability measures |
| 24 November 2021 | Invited speaker | Clémentine Prieur (Université Grenoble Alpes) Introduction to Global Sensitivity Analysis |
| 17 November 2021 | Invited Speaker | Johannes Landmann (ETH Zürich) Near-real-time glacier mass balance estimates from (in)direct observations and particle filtering |
| 10 November 2021 Special time: 15:00 |
Invited Speaker | Hristo Chipilski (NCAR) The value of assimilating different ground-based profiling networks for convective-scale NWP |
| 3 November 2021 | Internal Speaker | Ieva Daužickaitė (University of Reading) Preconditioning for the incremental weak-constraint 4D-Var |
| 27 October 2021 | Invited Speaker | Kody Law (University of Manchester) Randomized multilevel Monte Carlo for inference |
| 20 October 2021 | Internal Speaker | Bo Dong (University of Reading) Improving high-resolution ocean reanalyses using a simple smoother algorithm |
| 13 October 2021 Special time: 15:00 |
Invited Speaker | Robert Nystrom (NCAR) Opportunities and challenges in using ensemble-based parameter estimation to constrain tropical cyclone surface-exchange coefficients |
| 6 October 2021 | Internal Speaker | Devon Francis (University of Reading) The effective use of anchor observations in VarBC in the presence of model bias |
| 29 September 2021 | Invited Speaker | Sibo Cheng (Imperial College London) Data-driven surrogate model with latent data assimilation: Application to wildfire forecasting |
| 22 September 2021 | Catch-up Meeting | (Members share about their recent progress in an interactive manner; new members be introduced) |
| 9 June 2021 | No seminar | EnKF Workshop 2021 |
| 2 June 2021 | Invited Speaker | Daniel Sanz-Alonso (University of Chicago) TBA |
| 26 May 2021 Special time: 15:00 |
Invited Speaker | Michael De Caria (Colorado State University) A New Causal Discovery Framework with Application to Tropical Cyclone Rapid Intensification |
| 19 May 2021 | No Seminar | Joint ECMWF/OceanPredict workshop on Advances in Ocean Data Assimilation |
| 12 May 2021 | Invited Speaker | Jana de Wiljes (University of Potsdam) Challenges in high dimensional nonlinear filtering |
| 5 May 2021 | No Seminar | DARC-NCEO DA training course |
| 28 April 2021 | Internal Speaker | Zachary Bell (University of Reading) TBA |
| 21 April 2021 | No seminar | NCEO DA training course organisation meeting |
| 14 April 2021 | Invited Speaker | Jemima Tabeart (University of Edinburgh) Parallelisable preconditioners for saddle point weak-constraint 4D-Var |
| 24 March 2021 | Internal Speaker | Matthew Lang (University of Reading) Improving solar wind forecasts using data assimilation |
| 17 March 2021 | Internal Speaker | Nachiketa Chakraborty (University of Reading) Taking a Graphical Approach to Causal Inference |
| 10 March 2021 | Invited Speaker | Sahani Pathiraja (University of Potsdam) Controlled particle filters for continuous time/high frequency data assimilation |
| 3 March 2021 | Internal Speaker | Guannan Hu (University of Reading) Efficient computation of matrix-vector products with full observation weighting matrices |
| 24 February 2021 | Quo Vadis 2021 | 10:20 Devon Francis Bias correction of satellite data in data assimilation for numerical weather prediction 11:35 Gwyneth Matthews Post-processing of the European Flood Awareness System’s stream-flow forecasts 15:15 Daniel Ayers Detecting local dynamical instabilities with machine learning to enable adaptive modelling |
| 17 February 2021 Special time: 15:00 |
Invited Speaker | Michael Goodliff (NOAA) Non-Gaussian Detection using Machine Learning with Data Assimilation Applications |
| 10 February 2021 13:00-15:30 |
MPE machine learning day | Peter Dueben (ECMWF) Machine Learning for Weather PredictionsPeter Dueben, Rosella Arcucci, So Takao and Omar Jamil The Future of Machine Learning for Environmental Modelling |
| 3 February 2021 | Invited Speaker | Joshua Lee (Singapore National Environmental Agency) Modelling the background error covariance matrix for a tropical convective‐scale NWP system |
| 27 January 2021 | Internal Speaker | Javier Amezcua (University of Reading) A transform implementation of the GIGG filter |
| 20 January 2021 | Internal Speakers | Everyone in DARC “Show and Tell 2021” |
| 13 January 2021 | No seminar | NCEO staff meeting |
2020
| Date | Meeting type | Speaker |
| 16 December 2020 | DARC group | Everyone in DARC DARC Christmas Social |
| 9 December 2020 | Invited Speaker | Yuefei Zeng (University of Munich) Representation of model error and reducing imbalance in convective-scale data assimilation |
| 2 December 2020 2 PM (departmental event) |
Inaugural Lecture | Alberto Carrassi (University of Reading) Data assimilation: from dynamically based to data- driven approach |
| 25 November 2020 | Invited Speaker | Yvonne Ruckstuhl (University of Munich) Addressing model error by estimating model parameters with ensemble data assimilation |
| 18 November 2020 3 PM (special time) |
Invited Speaker | Elias Nino-Ruiz (Universidad del Norte, Colombia) Efficient Implementations of the EnKF via a Modified Cholesky Decomposition. |
| 11 November 2020 | Invited Speaker | Joffrey Dumont (IRSN and CEREA) Bayesian inverse and uncertainty quantification for source reconstruction of radionuclides release |
| 4 November 2020 | No seminar | Third day of the ECMWF/EUMETSAT workshop on satellite DA |
| 28 October 2020 | Invited Speaker | Luca Cantarello (University of Leeds) An idealised setup for satellite data assimilation research |
| 21 October 2020 | Invited Speaker | Ismael Vera Rodriguez (NORSAR) Atmospheric model calibration using infrasound waves from explosions |
| 14 October 2020 | Internal Speaker | Yumeng Chen (University of Reading, previously in University of Hamburg) Extending Legacy Climate Models by Adaptive Mesh Refinement for Tracer Transport Component |
| 7 October 2020 | No seminar | Third day of the ECMWF meeting on Machine Learning |
| 30 September 2020 | Internal Speaker | Tsz Yan Leung (University of Reading) Weather Predictability: Some Theoretical Considerations |
| 24 and 25 June 2020 | Online Conference | NCEO and CEIO annual conference |
| 10 June 2020 | Internal Speaker | Nachiketa Chakraborty (University of Reading) Bayesian Inference Framework for Causality |
| 27 May 2020 | Invited Speaker | Andrey Popov (Virginia Tech) A Multispace Ensemble Kalman Filter with Reduced Order Control Variates |
| 6 May 2020 | No seminar | EGU 2020 (cancelled) |
| 29 April 2020 Online Microsoft Teams |
Invited Speaker | Philip Browne (ECMWF) Ocean-atmosphere coupled assimilation; why it’s hard |
| 22 April 2020 Online on Microsoft Teams |
Internal Speaker | Javier Amezcua (University of Reading) Systems with two-scales and errors arising from their partial representation |
| 7 April 2020 (Tuesday, 4PM) Online on Microsoft Teams |
Invited Speaker | Daniele Marinazzo (Ghent University) Connectivity through dynamics: surprise and variance reduction |
| 25 March 2020 Online on Microsoft Teams |
Invited Speaker | David Fairbairn (ECMWF) The new stand-alone surface analysis at ECMWF |
| 20 March 2020 (Friday) Online on Microsoft Teams |
Internal Speaker | Guannan Hu (University of Reading) Efficient Computation of Matrix-vector Product in Data Assimilation |
| 11 March 2020 | Internal Speaker | Remy Vandaele (University of Reading) Machine Learning for Landmark Detection in Biomedical Applications |
| 4 March 2020 | Invited Speaker | Alban Farchi (Ecole des Ponts ParisTech) Localisation for ensemble data assimilation — from covariance localisation to local particle filters |
| 19 February 2020 | No seminar | NCEO/ECMWF Data Assimilation training course |
| 12 February 2020 | No seminar | SCENARIO interview day |
| 5 Febuary 2020, Met 1L61 | Meteorology Quo Vadis | (14:45) Haonan Ren: Effect of the auto-correlated model error on Data assimilation (15:00) Nicholas Williams: Arctic sea-ice reduction: gaining new knowledge from data assimilation |
| 29 January 2020 | Invited Speaker | Francine Schevenhoven (University of Bergen) Efficient algorithms to train supermodels |
| 29 January 2020 3 PM, Agr 1L10 |
Invited Speaker | Jakob Runge (German Aerospace Center) Inferring causation from time series with perspectives in Earth system sciences |
| 15 January 2020 | Invited Speaker | Michelle Grant (University of Surrey) Data assimilation, tipping events, and the importance of underlying dynamics |
2019
| Date | Meeting type | Speaker |
| 11 December 2019 | Invited Speaker | Sophy Oliver (Oxford University) Optimization of Global Ocean Biogeochemical Models |
| 4 December 2019 POSTPONED | Invited Speaker | Christine Evers (Imperial College) Robot Audition for Situational Awareness |
| 27 November 2019 | Internal Speaker | Varun Ojha (University of Reading) Machine Learning is a Search Problem |
| 20 November 2019 | Internal Speakers | DARC / Bayesian Group cross-over |
| 13 November 2019 | Internal Speakers | DARC PhD showcase (University of Reading) |
| 6 November 2019 | Internal Speaker | Alison Fowler (University of Reading) Measuring observation influence in the Met Office’s UKV assimilation system |
| 30 October 2019 | Internal Speaker | Nachiketa Chakraborty (University of Reading) The future of DARC and the Bayesian reading group |
| 23 October 2019 | Invited Speaker | Breogan Gomez (UK Met Office) Land surface data assimilation at the Met Office |
| 16 October 2019 | Internal Speaker | Ieva Dauzickaite (University of Reading) Spectral estimates for saddle point matrices arising in weak constraint four-dimensional variational data assimilation |
| 9 October 2019 | Invited Speaker | Jon Cockayne (University of Warwick) A Bayesian Conjugate Gradient Method |
| 2 October 2019 | Internal Speaker | Laura Mansfield (University of Reading) Probabilistic Programming in Climate Modelling |
| 1 October 2019 (Tuesday Lunchtime seminar) Met GU01 | Internal Speaker | Javier Amezcua (University of Reading) Assimilating atmospheric infrasound data to constrain tropospheric and stratospheric winds (or how I learned to use real data) |
| 26 September 2019 (Thursday) Agric 1U02 | Invited Speaker | Elizabeth Satterfield (Navy Research Laboratory, USA) Statistical Estimation Methods for Parameters of Data Assimilation Systems |
| 12 June 2019 Miller G19 | Internal Speaker | Richard Everitt (University of Reading) Ensemble MCMC: Accelerating Pseudo-Marginal MCMC for State Space Models using the Ensemble Kalman Filter |
| 5 June 2019 Miller G19 | Invited Speaker | Matthew Perks (University of Newcastle) Real-time sensing of river flow using imagery from fixed cameras |
| 22 May 2019 Miller G19 | Internal Speaker | Amsalework Ejigu (University of Reading) Ensemble initialization techniques for 4DEnVar in the JULES model for parameter estimation |
| 15 May 2019 Miller G19 | Invited Speaker | Oliver Guillet (CERFACS) Modelling spatially correlated observation error in variational data assimilation on unstructured meshes |
| 24 April 2019 Miller G19 | Internal Speaker | Chris Merchant (University of Reading) Optimising optimal estimation: Estimating error covariances using satellite-to-ground-truth matches |
| 10 April 2019 Agriculture 1L16 | Internal Speaker | Zackary Bell (University of Reading) Accounting for Observation Uncertainty due to Unresolved Scales in Data Assimilation |
| 3 April 2019 Agriculture 1L16 | Invited Speaker | Samuel Hatfield (University of Oxford) Reduced precision data assimilation |
| 27 March 2019 Meteorolody 1L61 | Invited Speaker | Tadeo J. Cocucci (UNNE and UN Cordoba, Argentina) Online expectation-maximization for model and observational error covariance estimation in particle filters and EnKFs |
| 6 March 2019 | No seminar | NCEO-ECMWF DA course |
| 27 February 2019 1 PM , Slingo Lecture Theatre | Extra Seminar | Javier Amezcua (University of Reading) Time structures in model error, joint with MPE-CDT |
| 20 February 2019 Harry Pitt 175 | Invited speaker | Ian Poll (Cranfield University), joint with Aviation Group On the relationship between non-optimum operations and fuel requirement for large civil transport aircraft, with reference to environmental impact and contrail avoidance strategy |
| 6 February 2019 Met 1L61 | No seminar | Meeting to organise the NCEO-ECMWF 2019 Data Assimilation School |
| 30 January 2019 Met 1L61 | Invited speaker | Naratip Santitissadeekorn (University of Surrey) Approximate filtering of intensity process for Poisson count data |
| 23 January 2019 | No seminar | ISDA 2019 in RIKEN, Kobe |
| 16 January 2019 Met 1L61 | Internal speaker | Jehan Alswaihli (University of Reading) Iterative Inverse Problem and Data Assimilation Techniques in Neural Field Equations. |
| 9 January 2019 | No seminar | NCEO national staff meeting |
2018
| Date | Meeting type | Speaker |
| 12 December 2018 | Invited speaker | Sean Cleator (University of Surrey) Using data assimilation and pollen to reconstruct the palaeoclimate |
| 5 December 2018 | Invited speaker | Natalie Douglas (University of Surrey) Data Assimilation in the Sellers model |
| 21 November 2018 11 AM | Invited speaker | Wei Pan (Imperial College) Sequential Monte Carlo for Stochastic Advection by Lie Transport GFD Models |
| 21 November 2018 2 PM | Invited speaker, Hopkins 101 | Renaud Hostache and Concetta di Mauro (LIST, Luxembourg) Assimilation of SAR-derived flood extent to improve flood prediction: Synthetic experiment and application to hurricane Harvey |
| 14 November 2018 | Internal speaker | Amos Lawless (University of Reading) Parameter estimation for a morphochemical reaction-diffusion model of electrochemical pattern formation |
| 31 October 2018 | Invited speaker | Geir Evensen (IRIS, Norway) Potential of iterative ensemble methods for solving the nonlinear state and parameter-estimation problem |
| 17 October 2018 | Invited speaker | Bertrand Bonan (Meteo France) An Ensemble Kalman Filter for the joint assimilation of surface soil moisture and leaf area index within LDAS-Monde |
| 10 October 2018 | Internal speaker | Jemima Tabeart (University of Reading) Estimating correlated observation errors for sea surface temperature in the Met Office system |
| 3 October 2018 | Internal speakers | Darc members (University of Reading) What is DARC up to? |
| 26 July 2018 | Invited speaker | Derek Posselt (JPL) OSSEs of Varying Complexity and Their Use in Satellite Mission Design 1L61, Dept of Meteorology |
| 13 July 2018 | Invited speaker | Craig Bishop (University of Melbourne) Next decade data assimilation and the challenge of non-Gaussian, non-linear and multi-scale variables 1L61, Dept of Meteorology |
| 11 July 2018 | Invited speaker | Prateek Kumar Dongre (University of Cardiff) On the new hyperspectral microwave instrument HYMAS 1L43, Dept of Meteorology |
| 27 June 2018 | Internal Speakers | Maha Kaouri (UoR) Gauss-Newton-type Optimization Methods for Variational Data Assimilation Elisabeth Cooper (UoR) Observation operators for assimilation of satellite observations in river inundation forecasting Zak Bell (UoR) Accounting for error due to unresolved scales in data assimilation |
| 20 June 2018 | Invited Speaker | Bart de Leeuw (CWI, Netherlands) Shadowing data assimilation for imperfect models |
| 13 June 2018 | Invited Speaker | Lars Nerger (AWI, Germany) Building a Scalable Ensemble Data Assimilation System for Coupled Models |
| 6 June 2018 | Invited Speaker | Ali Aydogdu (NERSC, Norway) Ensemble data assimilation on a non-conservative adaptive moving mesh |
| 30 May 2018 | Invited Speaker | Nicolas Bousserez (ECMWF) Optimal and Scalable Dimension Reduction Techniques for Large-Scale Bayesian Atmospheric Inversions |
| 16 May 2018 | Invited Speaker | Jonathan Ward (University of Leeds) Agent-based models and data assimilation |
| 9 May 2018 | Invited Speaker | Rosella Arcucci (Imperial College) Effective Data Assimilation models |
| 18 April 2018 | No seminar | NCEO staff meeting |
| 17 April 2018 Tuesday, AGRIC 1L06 | Invited Speaker | Adam El-Said (Open University) Mars Modelling Information Tool for Engineers (MarMITE): Quantifying the impact of local dust storms on Mars |
| 11 April 2018 | No seminar | EGU annual meeting, Vienna |
| 4 April 2018 | Invited Speaker | Havard Holm (Sintef, Norway) GPU Ocean: Simplified ocean models and particle filters |
| 21 March 2018 | Invited Speaker | Martin Saetra (Norwegian Meteorological Institute) GPU Ocean: Efficient shallow-water simulations on the GPU |
| 14 March 2018 | Invited Speaker | Javier Garcia-Pintado (MARUM, Bremen) Assimilation experiments with the Community Earth System Model (CESM) for multidecadal past climate reconstruction. |
| 7 March 2018 | No seminar | ISDA 2018 (Munich) and ECMWF/NCEO training course (Reading) |
| 2 March 2018 Friday, Maths 113 | Invited Speaker | Yannick Tremolet (NOAA) The Joint Effort for Data assimilation Integration |
| 28 February 2018 | Invited Speaker | Hans Kunsch (ETH, Zurich) A hybrid Ensemble Kalman Particle Filter for high-dimensional data assimilation |
| 31 January 2018 | DARC administrative meeting | Peter Jan van Leeuwen (University of Reading) |
| 24 January 2018 | Internal Speaker | Richard Everitt (University of Reading) A Tutorial on ABC and Synthetic Likelihood |
| 17 January 2018 | Internal Speaker | Javier Amezcua (University of Reading) Ensemble smoothers in the presence of auto-correlated model error |
| 10 January 2018 | Internal Speakers | DARC group members The status of DARC in 2018 |
2017
| 6 December 2017 | Invited Speaker | Jason Otkin (University of Wisconsin Madison) Nonlinear Bias Correction for Satellite Data Assimilation using Taylor Series Polynomials |
| 29 November 2017 (10:30-12:00) | Invited Speakers from SPAT group | Luke Phillipson (Imperial College) Impact of data assimilation on ocean current forecasts in the Angola Basin Yi Li (Imperial College) Improvement of TC forecast by assimilating ocean surface currents Cesar Quilodran-Casas (Imperial College) Fast ocean data assimilation using a reduced-space regional ocean model of the North Brazil Current |
| 15 November 2017 | Visiting PhD student | Charlotte Breitkreuz (Universitat Bremen) A particle method for parameter estimation in paleo-ocean modelling |
| 8 November 2017 | Invited Speaker | Steve Penny (University of Maryland / NOAA) Hybrid-gain data assimilation and the synchronization of chaotic systems |
| 25 October 2017 | No seminar | MPE-CDT sandpit meeting |
| 24 October 2017 (Tuesday) Palmer 106 | Invited Speaker | Derek Posselt (JPL) Model Parameter Estimation Using Nonlinear Ensemble Algorithms |
| 18 October 2017 | Invited Speaker | Alison Ramage (U of Strathclyde) A Multilevel Approximation of the inverse Hessian in 4D-Var |
| 11 October 2017 | Visiting PhD Student | Jacob Skauvold (NTNU) Data assimilation for a geological process model – Is the EnKF the right tool for the job? |
| 11 October 2017 | Visiting Scientist | Mineto Satoh (NEC Japan) Introduction of collaborative research, toward efficient DA algorithms for fluctuating and controllable systems |
| 4 October 2017 | Invited Speaker | Steven Fletcher (Colorado State University) Recent Developments in Mixed Gaussian-Lognormal based variational data assimilation |
| 27 September 2017 | Internal Speaker | James Shaw (UoR) Subsampling for uncertainty quantification |
| 27 September 2017 | Visiting PhD Student | Charlotte Breitkreuz (Universitat Bremen) Introduction to the group |
| 13 September 2017 | No Seminar | WMO DA meeting in Brazil |
| 9 August 2017 1L43 | Internal Speaker | Diego DePablos (UoR) Can cars provide high quality temperature observations for use in weather forecast? |
| 3 August 2017 1L43, 10:30 | Invited Speaker | Sergiy Zhuk (IBM) Detectability for data assimilation: how to place sensors to have your filter converged? |
| 3 August 2017 1L43, 11:30 | Invited Speaker | Tristan van Leeuwen (University of Ultrech) Relaxation for non-linear seismic inversion |
| 1 August 2017 1L43 | Invited Speaker | Sergey Frolov (US NRL) Coupled data assimilation efforts at the US Naval Research Laboratory |
| 19 July 2017 | Internal Speaker | Jeremy Holzke (UoR) Improving aircraft observatinos using data assimilation |
| 28 June 2017 | No Seminar | NCEO annual conference |
| 21 June 2017 | Invited Speaker | Luke Smallman (University of Edinburgh) Understanding terrestrial ecosystem processes using model-data fusion approaches: Challenges and opportunities |
| 14 June 2017 | Internal Speaker | Lea Oljaca (UoR) Data assimilation in the 2D incompressible Navier Stokes and Lorenz ’63 model |
| 7 June 2017 | Internal Speaker | Jemima Tabeart (UoR) Accounting for correlated observation errors in variational data assimilation |
| 17 May 2017 | Invited Speaker | Jurrian Gillisen (Singapore-MIT) A space-time integral minimization method for reconstructing velocity fields from scalar fields |
| 10 May 2017 | Internal Speaker | Jochen Broecker (UoR) What is the correct cost-function in 4DVar? |
| 3 May 2017 | Invited Speaker | Walter Acevedo (Potsdam Universitat) Hybrid particle-Kalman filtering via likelihood splitting, optimal coupling and moment matching |
| 26 April 2017 | No seminar | EGU, Vienna |
| 25 April 2017 | Invited Speaker | Elisabeth Bauernschubert (DWD) Assimilation of radial winds in an ensemble Kalman filter on the convective scale |
| 29 March 2017 | No seminar | NCEO Researchers Forum |
| 22 March 2017 | Internal Speaker | Javier Amezcua (University of Reading) Properties of families of WC4DVars |
| 9 March 2017 Chancellors G13 | Invited Speaker | Patrick Raanes (NERSC) Gaussian scale mixtures and adaptive inflation in the EnKF |
| 8 March 2017 11-13, Miller G19 | Invited Speaker | Murray Pollock (University of Warwick) Exact Bayesian Inference for Big Data |
| 1 March 2017 11-13, Miller G19 | Internal Speaker Invited Speaker | Philip Maybank (University of Reading) Fast approximate Bayesian inference for stable differential equation models Will Penny (UCL) Bayesian Inference for Brain Connectivity Modelling |
| 22 February 2017 DARC/MPECDT, Lyle G74 | Invited Speaker | Antje Weisheimer (Oxford University) Seasonal forecasts and skills of predicting NAO from a 110-year hindcast data set |
| 15 February 2017 | No seminar | SCENARIO DA course, UoR |
| 8 February 2016 | Internal Speaker | Felipe Medina Aguayo (University of Reading) Approximate MCMC, sacrificing exactness for speed |
| 1 February 2016 DARC/MPECDT, Lyle G74 | Invited Speaker | Nick Kantas (Imperial College) Particle filtering: a brief tutorial on the methodology and some extensions that are useful for high dimensional systems |
| 25 January 2017 | Internal Speaker | Gernot Geppert (University of Reading) Analysis and application of the EnKF for the estimation of bounded quantities |
| 18 February 2017 | Invited Speaker DARC/MPECDT, Lyle G74 | Dan Crisan (Imperial College) Principled data assimilation: dream or reality. |
2016
| 7 December 2016 AGRIC 1L14 | Internal Speaker | Alison Fowler (University of Reading On the interaction of a-priori and observation error correlations |
| 30 November 2016 AGRIC 1L14 | Internal Speaker | Amsalework Ejigu (University of Reading) LETKF experiments with Darcy model in EMPIRE |
| 23 November 2016 ENGIN 318 | Invited Speaker | Nick Schutgens (Oxford University) TBA |
| 16 November 2016 — | No seminar | ECMWF seminar Representing model uncertainty in the ECMWF ensemble system |
| 14 November 2016 URS 2s12 (2 PM) | Invited Speaker | Femke Vossepoel (Delft University of Technology) Data assimilation methodologies for monitoring surface effects of producing hydrocarbon reservoirs |
| 9 November 2016 LYLE G74 | Invited Speaker | Nick Gould, Tyrone Rees and Jennifer Scott (STFC Rutherford Appleton Lab) Least squares: are we fit for the future? |
| 2 November 2016 AGRIC 1U02 | Invited Speaker | Tom Kent (University of Leeds) An idealised fluid model for convective-scale NWP: dynamics and data assimilation |
| 26 October 2016 FOODSCI 234 | Internal Speaker | Chris Thomas (University of Reading) Using lagged covariances in data assimilation |
| 19 October 2016 — | No seminar | MPE meeting at Imperial College |
| 13 July 2016 Agric 1L08 | Invited Speaker | Bill Campbell (NRL) Accounting for Correlated Satellite Observation Error in Variational Data Assimilation |
| 11 July 2016 (Monday) Met GU01 | Invited Speaker | Takemasa Miyoshi (RIKEN) Big Data, Supercomputing, and Data Assimilation |
| 28 June 2016 (Tuesday) Agriculture 1L14, 12 PM | Invited Speaker | Matthias Morzfeld (University of Arizona) Data assimilation by the Ensemble Kalman filter and other particle filters– why are 50 ensemble members enough? |
| 08 June 2016 Miller G19 | Internal Speaker | Polly Smith (UoR) Estimating atmosphere-ocean forecast error cross-covariances for strongly coupled 4D-Var data assimilation |
| 01 June 2016 10:15 AM, Allen Lab G10 | Internal Speaker | Philip Browne (UoR) Tutorial: Introduction to EMPIRE |
| 25 May 2016 Met GU01 | Internal Speaker | Elske van der Vaart (UoR) Fitting Mechanistic Computer Simulation Models to Repeated Measures Data using Approximate Bayesian Computation |
| 19 May 2016 URS 2n13 | Invited Speaker | Naratip Santitissadeekorn (University of Surrey) Coherent structure approach for parameter estimation in Lagrangian Data Assimilation |
| 18 May 2016 Miller G19 | Invited Speaker | Steve Penny (University of Maryland) Ocean and Coupled Data Assimilation: theory, practice, and what lies on the horizon |
| 12 May 2016 URS 2n13 | Inivited Speaker | Ibrahim Hoteit (KAUST) Towards an Ensemble Forecasting System for the Red Sea: Algorithmic Developments and Recent Results |
| 11 May 2016 Miller G19 | Invited Speaker | Nick Whiteley (University of Bristol) Variance estimation in the particle filter |
| 5 May 2016 Met GU01 | Invited Speaker | Daryl Kleist (University of Maryland) Using advanced data assimilation to improve operational predictions from the NCEP Global Forecast System (GFS) model |
| 4 May 2016 Miller G19 | Invited Speaker | Ulrich Parliz (GAU Gottingen) Challenging Applications for State and Parameter Estimation in Nonlinear Cardiac Dynamics |
| 27 April 2016 Miller G19 | Invited Speaker | Daniel Sanz-Alonso (University of Warwick) Importance Sampling for Data Assimilation |
| 9 March 2016 Agric 1U02 | Invited Speaker | Lei Ren (NUI Galway) Assimilation of High-Frequency radar data into a hydrodynamic model for a wind dominated water body |
| 9 March 2016 | Internal Speaker | David Livings (University of Reading) Probability in Variational Data Assimilation |
| 12 February 2016 Agric 1L14, 11 AM | Invited Speaker | Tijana Janjic-Pfander (LMU) Approaches to convective scale data assimilation |
| 10 February 2016 Maths 113, 11 AM | Invited Speaker | Joaquin Miguez (QUML) Parallelisation schemes for fast particle filtering |
| 12 January 2016 Tuesday 1:15 PM, Agric 1L22 | Invited Speaker | Jonathan Flowerdew (UK Met Office) Initial trials of a convective-scale ensemble filter |
2015
| 11 December 2015 Friday 2 PM, Met 1L61 | Invited Speaker | Marek Wlasak (Met Office) Static global background covariances used in hybrid 4D-Var: Current status and potential developments |
| 18 November 2015 | Special Meeting | DARC research display for special guest |
| 12 November 2015 Thursday | Invited Speaker | Colin Grudzien (University of North Carolina) Rank Reduction of Kalman Filter Covariances and the Unstable Subspace |
| 4 November 2015 | Invited Speaker | Sean Elvidge (University of Birmingham) Current techniques and future challenges for modelling the ionosphere with data assimilation |
| 28 October 2015 | Invited Speaker | Pierre Gauthier (UQAM) Estimation of observation errors and their correlations in AIRS radiance data |
| 7 October 2015 | Invited Speaker | David Fairbairn (Meteo France) Comparing the ensemble and extended Kalman filters for in situ soil moisture assimilation with contrasting conditions |
| 30 September 2015 Agric GU04 | Internal Speaker | Michael Goodliff (UoR) A weak-constraint 4D-Ensemble-Var |
| 5 August 2015 G74 Philip Lyle building | Invited Speaker | Lars Nerger (AWI, Bremerhaven, Germany) The HBM-PDAF assimilation system for forecasts of physics and biogeochemistry in the North and Baltic Seas |
| 21 July 2015 11 AM, 1L61 | Invited Speaker | Fuqing Zhang (Penn State University) Advances and challenges in regional ensemble and hybrid data assimilation |
| 15 July 2015 | Internal Speaker | Mengbin Zhu (University of Reading) |
| 1 July 2015 | Invited Speaker | Christopher Wilson (University of Leeds) |
| 24 June 2015 | Invited Speaker | Lyudmila Mihaylova (University of Sheffield) Sequential Monte Carlo Methods for Tracking and Inference |
| 10 June 2015 | Invited Speaker | Luke Smallman (University of Edinburgh) Improving our understanding of ecosystem processes using data assimilation |
| 5 June 2015 Met 1L61 | Invited Speaker | Jeff Anderson (NCAR) Automated Design of Localization for Ensemble Kalman Filter |
| 27 May 2015 | Internal Speaker | Katherine Howes (University of Reading) Allowing for model error in strong constraint 4DVAR |
| 20 May 2015 | Internal Speakers | Sarah Dance and Joanne Waller (University of Reading) SD: Theoretical insight into diagnosing observation error spatial correlations using background and analysis innovation statistics. JW: Diagnosing spatial and inter channel observation error statistics for Doppler radar radial wind and SEVIRI observations. |
| 29 April 2015 | Invited Speaker | Ben Timmermans (University of Southampton) Uncertainty in a numerical wind-wave model |
| 22 April 2015 | Invited Speaker | Alan Cooper and Catherine Villaret (HR Wallingford) Data Assimilation for tidal surge forecasting and uncertainty analysis for morphodynamics modelling |
| 25 March 2015 | Internal Speaker | Adam El-Said (University of Reading) Conditioning of the weak-constraint 4DVAR problem |
| 18 March 2015 | Invited Speaker | Craig Bishop (Naval Research Laboratory) The gig filter and its potential use in Earth-system analysis and prediction |
| 16 March 2015 (GU01, 12PM) | Invited Speaker (Met departmental seminar) | Craig Bishop (Naval Research Laboratory) Climate model dependence and the Ensemble Dependence Transformation of CMIP projections |
| 11 March 2015 | Internal Speaker | Melanie Ades (University of Reading) Estimating the full posterior pdf with particle filters |
| 4 March 2015 | Invited Speaker | Enza di Tomaso (Barcelona Supercomputing Centre) Aerosol Data Assimilation at the Barcelona Supercomputing Centre |
| 25 February 2015 | Internal Speakers (short talks) | Nikos Katzourakis (University of Reading) Jochen Broecker (University of Reading) How can Calculus of Variations in the supremum norm optimise the results of Data Assimilation? |
| 11 February 2015 | Internal Speaker (short talk) | Alison Fowler (University of Reading) Model error in coupled atmosphere-ocean data assimilation |
| 21 January 2015 | Internal Speaker | Peter Jan van Leeuwen (University of Reading) Representation errors in linear and nonlinear data assimilation |
2014
| 3 December 2014 | Invited Speaker | Boris Afanasiev Kernel methods in Machine Learning |
| 26 November 2014 | Invited Speaker | Paul Childs (Schlumberger) Weak Constraints in Seismic Imaging and the Relation to Data Assimilation |
| 19 November 2014 | Invited Speaker | Naratip Santitissadeekorn (University of Surrey) Joint state-parameter data assimilation by a two-stage filtering technique. |
| 5 November 2014 | Internal Speaker | Polly Smith (University of Reading) Exploring coupled 4D-Var data assimilation using an idealised atmosphere-ocean model. |
| 29 October 2014 | Invited Speaker | Maelle Nodet (University of Grenoble) Accounting for correlated observation errors in image data assimilation |
| 28 October 2014 1L61, 10AM | Invited Speaker | Heikki Haario (Lappeenranta University of Technology, Finland) Model parameters of chaotic dynamics: metrics for comparing trajectories |
| 22 October 2014 | Invited Speaker | Simon Lang (ECMWF) The effect of perturbation re-centring on ensemble forecasts |
| 8 October 2014 | Invited Speaker | Rossella Arcucci (Imperial College) A Scalable Approach for Variational Data Assimilation |
| 13 August 2014 Met 1L61 | Invited Speaker | Yovany Cordero (University of Bremen) Covariance update in the data assimilation for state and parameter estimation |
| 16 July 2014 Met 1L61 | Invited Speaker | Tim Jupp and Nina Raoult (University of Exeter) Calibration of the land-surface model JULES using an adjoint |
| 3 July 2014 Special date and time Agric GU04, 11:30 AM | Invited Speaker | Lars Nerger (AWI) Aspects of localization in ensemble Kalman filters |
| 25 June 2014 | Internal Speaker | Yuanfu Xie (NOAA ESRL) Impact of Control Variables in Variational Data Assimilation Systems |
| 23 June 2014 Special date Met 1L61 | Invited Speaker | Matthias Morzfeld (Lawrence Berkeley National Laboratory) |
| 18 June 2014 | Invited Speaker | Marco Iglesias (University of Nottingham) Regularising Ensemble Kalman Methods for Inverse Problems |
| 17 June 2014 Special date Agric 1L06 | Invited Speaker | Jonathan Weare (University of Chicago) Data assimilation in the low noise regime |
| 11 June 2014 | Invited Speaker | Mohamed Jardak (Met Office) The Ensemble Variational Assimilation and Bayesian Estimation |
| 4 June 2014 | Invited Speaker | Brett Candy (Met Office) Land Surface Data Assimilation at the Met Office Richard Renshaw (Met Office) Regional Reanalysis at the Met Office, Looking Back going Forward |
| 2 June 2014 10:30-2:30 Met 1L61 | Invited Speaker | Mike Cullen (Met Office) Data assimilation in the presence of model error |
| 28 May 2014 13:00 | Lunchtime seminar | Peter Jan van Leeuwen (University of Reading) Data Assimilation: What NWP Centres Do and What They Should Be Doing |
| 28 May 2014 | Internal Speaker | Noeleene Mallia (University of Reading) Assessing the Performance of Data Assimilation Algorithms with Linear Error Feedback |
| 21 May 2014 | Internal Speaker | Jon Robson (University of Reading) A novel transport assimilation method for the Atlantic Meridional Overturning Circulation at 26N |
| 14 May 2014 | No seminar | Warwick DA meeting |
| 7 May 2014 | Invited Speaker | Eric Boisseson (ECMWF) The Coupled ECMWF Reanalysis |
| 6 May 2014 Special date | Invited Speaker | Norikazu Ikoma (Kyushu Institute of Technology) Real-time applications of particle filters in engineering field |
| 30 April 2014 | No seminar | EGU annual meeting |
| 23 April 2014 | No seminar | ESA correlated obs workshop |
| 16 April 2014 | No seminar | RMS meeting: The maths of planet Earth |
| 9 April 2014 | Internal Speaker | Emma Villeneuve (University of Reading) Estimation of limb angular kinematics using particle filter |
| 19 March 2014 | Invited Speaker | Chiara Piccolo (Met Office) Evaluation of model error using data assimilation |
| 12 March 2014 12:10-12:55 Met 1L61 | PhD Quo Vadis | 12:10. Seonaid Dey. High resolution ensemble analysis: linking correlations and spread to physical processes. 12:25. Mike Goodliff. The Comparison of Different Hybrid Data Assimilation Methods. 12:40. Matt Lang. Parameterisation Estimation Using Data Assimilation. |
| 5 March 2014 | Internal Speaker | Katherine Howes (University of Reading) Developing coupled data assimilation methods in the presence of model error. |
| 26 February 2014 | No seminar | Munich DA meeting |
| 19 February 2014 | Internal Speaker | Ingo Bojak (University of Reading) The cake is a lie – Limits to biological realism in (neural population) models. |
| 12 February 2014 | Invited Speaker | Nikolaos Kantas (Imperial College) Monte Carlo Methods for High-Dimensional Inverse Problems: A case study for the Navier-Stokes equations |
| 5 February 2014 | Internal Speaker | Dennis Prangle (University of Reading) Approximate Bayesian Computation and Particle Filters |
| 22 January 2014 | Invited Speaker | Wonjung Leew (Warwick University) The adaptive patched particle filter and its implementation. |
| 15 January 2014 | Invited Speaker | Steven Greybush (Penn State University) Ensemble data assimilation in Mars |
2013
| 4 December 2013 | Selime Guriol (ECMWF) Preconditioning saddle-point systems arising from 4D-Var approach |
| 21 November 2013 | Michael Weniger (University of Bonn) Stochastic Parametrization: A Rigorous Approach to the 3D Primitive Equations |
| 20 November 2013 | Sarah Kemp (University of Bristol) Data assimilation in terrestrial carbon cycle modelling |
| 19 November 2013 | Svetlana Dubinkina (Louvain La Neuve) A data assimilation approach to reconstruct the past climate states |
| 13 November 2013 | Oscar Martinez-Alvarado (University of Reading) Implications of model error for numerical weather and climate prediction |
| 6 November 2013 | Elske van der Vaart (University of Reading) ABC for IBMs: Parametrising Earthworms |
| 30 October 2013 | Bertrand Bonan (University of Reading) An ETKF approach for initial state and parameter estimation in ice sheet modelling |
| 23 October 2013 | Shin’ya Nakano (Institute of Statistical Mathematics, Japan) A filter algorithm combining ensemble transform Kalman filter and importance sampling |
| 16 October 2013 | Anna Hogg (University of Leeds) Mapping Ice Sheet Grounding Lines Using Earth Observation Data |
| 2 October 2013 | Show and tell: what the DARCies are doing |
| 27 September 2013 | Alexey Chenov (Universitat Bonn) Convergence analysis for multilevel variance estimators in Multilevel Monte Carlo Methods and application for random obstacle problems |
| 4 September 2013 | Shinya Yamamoto (Shimizu Corporation) Sequential data assimilation for subsurface flow modeling in civil engineering |
| 17 July 2013 | Nancy Nichols (UoR) New results on model error (weak constraint DA) |
| 2 July 2013 | Lars Nerger (AWI) Ensemble smoothers and the effects of model nonlinearity |
| 26 June 2013 | David Fairbairn (Met Office) Comparisons between 4DVar and 4DEnVar on the Met Office global model |
| 19 June 2013 | John Eyre (Met Office) The impact of the temporal spacing of observations on analysis accuracy. |
| 12 June 2013 | Stephen Cornford (University of Bristol) Adaptive mesh modelling of grounding line retreat in West Antarctica. |
| 5 June 2013 | Dan Crisan (Imperial College) Generalized particle filters. |
| 29 May 2013 | Andrew Stuart (University of Warwick) Ensemble Methods for Data Assimilation and Inverse Problems. |
| 23 May 2013 | Aretha Teckentrup (University of Bath) Multilevel Monte Carlo methods for uncertainty quantification in subsurface flow |
| 22 May 2013 | Javier Amezcua (UoR) Ensemble transform Kalman-Bucy filters. |
| 15 May 2013 | Glenn Shutts (Met Office) Latest thoughts on stochastic kinetic energy backscatter – good and bad. |
| 8 May 2013 | Jochen Brocker (UoR) Variational data assimilation in continuous time. |
| 1 May 2013 | Andrew Lorenc (Met Office) 4D-Ensemble-Var a development path for data assimilation at the Met Office. |
| 24 April 2013 | Presentation of PhD students for visitor Chris Snyder |
| 22 April 2013 | Chris Snyder (UCAR) Performance bounds for particle filters using the optimal proposal. |
| 27 March 2013 | Ross Bannister (UoR) Parameter estimation in large models |
| 20 March 2013 | Matthew Smith (Microsoft) The climate dependence of the terrestrial carbon cycle, including parameter and structural uncertainties. |
| 13 March 2013 | Sian Jenkins (University of Bath) Numerical Error in 4D-Variational Data Assimilation. |
| 6 March 2013 | Jose Gomez-Dans (UCL) The edge preservation society: Monitoring land surface disturbance using data assimilation. |
| 27 February 2013 | Richard Everitt (UoR) Recent developments in Monte Carlo methods (applied to Markov random fields). |
| 20 February 2013 | Coralia Cartis (Edinburgh) Efficient optimization algorithms for nonlinear least-squares and inverse problems |
| 6 February 2013 | Nicola Pounder (UoR) A variational retrieval scheme for observing stratucumulus with lidar. |
| 30 January 2013 | Laure Zanna (University of Oxford) Modelling & predicting climate with dice. |
| 23 January 2013 | Orial Kryeziu (UoR) Sea surface diurnal warming. |
| 16 January 2013 | Alexander Moodey (UoR) Nonlinear error dynamics for cycled data assimilation methods. |
| 9 January 2013 | Joanne Pocock (UoR) Estimation of observation error covariances using an ensemble transform Kalman filter. |
2012
2011
| 14 Dec 2011 | Dale Partridge (University of Reading) Assimilation in a moving mesh framework |
| 7 Dec 2011 | Prof Juan M. Restrepo (University of Arizona) Ensemble Bred Vectors, Sensitivity and Reduced Dimension Dynamics. |
| 30 Nov 2011 | Prof. Richard Sibly (School of Biological Sciences, Reading) Evaluation of Agent Based Models, ABMs. |
| 23 Nov 2011 | Prof. Nancy Nichols (University of Reading) The effects of using reduced dimensional models in 4DVar |
| 16 Nov 2011 | Wonjung Lee (University of Oxford) Application of the cubature on Wiener space to turbulence filtering |
| 18 July 2011 | Prof. Robert Miller (Oregon State University) TBA |
| 6 July 2011 | Dr. Ibrahim Hoteit (KAUST) Ocean Predictions and Nonlinear Bayesian Filtering |
| 15 June 2011 | Dr. Carla Cardinali (ECMWF) Forecast sensitivity to observations and observation error variance assimilation diagnostics |
| 27 April 2011 | Dr. Marko Scholze (University of Bristol) A combined ensemble-adjoint optimization approach and network design in carbon cycle research. |
| 23 March 2011 | Dr. Dan Cornford (Aston University) Variational Bayesian Methods |
| 16 March 2011 | Dr. Igor Gajadze (University of Strathclyde) Error analysis in nonlinear variational data assimilation problems |
| 9 March 2011 | RMetS Special Interst working group on Data Assimilation |
| 16 Feb 2011 | Dr. Stefano Migliorini (NCEO, University of Reading) On the equivalence between radiance and retrieval assimilation: a mathematical perspective |
| 26 Jan 2011 | Prof Alexei Likhtman (Mathematics, University of Reading) Polymer Dynamics and the potential use of particle filters |
Pre 2011
| 15 Dec 2010 | Dr Sylvain Dalahaies (Surrey) Using data Assimilation to improve Carbon fluxes measurements |
| 24 Nov 2010 | Nathan Smith (Bath) Image-model cupling for an ionospheric storm:”double data asimilation” |
| 17 Nov 2010 | Chris Farmer (Oxford) Inverse problems: Formulation, Computation, and Interpretation |
| 06 Oct 2010 | Hailiang Du (London School of Economics) Indistinguishable states |
| Robert Arthern | Antarctic ice model |
| Ivan Astin | Ionospheric data assimilation |
| Ross Bannister | Preconditioning in Met Office Var. |
| Angela Benedetti | Cloud models and assimilation |
| Angelika Bunse-Gerstner | Ill-posed linear inverse problems |
| Yasmine Calisesi | Ground-based microwave remote sensing of middle atmospheric ozone: Technique, retrievals, and data analysis |
| Dan Cornford (x 2) | General Bayesian data assimilation |
| Mike Cullen | PV control variable in ECMWF Var. |
| Sarah Dance | Nonlinearity and ensemble filtering |
| Marie Dando | The impact of ATOVS on weather prediction |
| Anu Dudia | Radiative transfer models |
| Mike Fisher | Background error covariance modelling |
| Steve Fletcher | Hamiltonian and semi-geostrophic theory |
| Steve Fletcher | CIRA/CSU data assimilation |
| Dominiq Fonteyn | Chemical data assimilation |
| Michael Ghil | Data assimilation for the atmosphere, ocean, climate and space plasmas |
| Serge Gratton | Convergence in descent algorithms |
| Robin Hankin | Bayesian methods for assessing uncertainty in computer code output |
| Sean Healey (x 2) | GPS assimilation |
| Kevin Hodges | ERA-40 analysis |
| Robin Hogan | Cloud and precip retrievals from radar, lidar and radiometers |
| William Holderbaum | Hamiltonian systems on Lie groups |
| Marta Janiskova | Physical parametrization in data assimilation |
| Martin Juckes | The Direct Inversion Method – getting more information out of atmospheric data |
| Erland Källén | Assimilation of winds in the tropics: Use of line-of-sight wind profiles |
| Philippe Lopez | Assimilation of precipitation related observations |
| Dennis McLaughlin | Data Assimilation in the Earth Sciences: Building on and Going beyond Classic Estimation Theory |
| Stefano Migliorini | Radiative transfer models |
| Cathryn Mitchell | Ionospheric data assimilation |
| Michael Navon | Advection schemes, and model/background error in data assimilation |
| Paul Palmer | Remote sensing of tropospheric chemistry |
| Mark Parrington | Chemical data assimilation in the Unified Model |
| David Tan | ADM-Aeolus mission |
| Marek Wlasak | Balanced control variables in shallow water systems |