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Department of Meteorology – University of Reading

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Departmental Seminars Speaker Archive

SPRING 2022

10 Jan 22 Jonathan Wilkinson
Met Office
What insights can be found when comparing synoptic weather patterns to lightning activity in Britain and Ireland?
17 Jan M. Marcello Miglietta
ISAC-CNR
Mediterranean tropical-like cyclones (Medicanes)
24 Jan Cancelled
31 Jan Maximilian Kotz
Potsdam Institute for Climate Impact Research
The economic cost of climate change – resolving the locality of climate impacts in time and space
7 Feb Alberto Arribas
Microsoft
A changing climate? AI, net-zero, climate risk …
14 Feb Cancelled
21 Feb Johanna Baehr
University of Hamburg
Seasonal climate predictions: why sometimes less is more
28 Feb Cancelled
7 Mar ** Pavel Berloff
Imperial College London
Oceanic Eddy-Induced Transport: Full-Tensor Approach
14 Mar * 15:00 Karen McKinnon
University of California, Los Angeles
What can we learn about future continental climate from the historical record? A story of the signal and the noise
21 Mar * 15:00 Marika Holland
NCAR
The Emergence and Transient Nature of Arctic Amplification

AUTUMN 2021

27 Sep Jeff Walker
Monash University
Towards next-generation soil moisture mapping technology
4 Oct ** Tim Woollings
University of Oxford
The role of Rossby waves in polar weather and climate
11 Oct Cancelled
18 Oct* Ian Eisenman
University of California, San Diego
Two Antarctic sea ice enigmas and proposed explanations
25 Oct Cancelled
1 Nov Jasper Kok
University of California, Los Angeles
The mysterious abundance of coarse desert dust in Earth’s atmosphere
8 Nov Cancelled
15 Nov Angela Morelli
InfoDesignLab
Visualizing data for impact: a participatory journey from data to storytelling
22 Nov Ivana Stiperski
University of Innsbruck
Understanding turbulence in mountainous terrain
29 Nov Panos Athanasiadis
The Euro-Mediterranean Center on Climate Change
Glimpses on the role of North Atlantic SST gradients in forcing large-scale atmospheric circulation responses — results from two separate studies
6 Dec Leo Hickman
Carbon Brief
Climate Change in the Media – A journalist’s perspective

SUmmer 2021

19 Apr Cancelled
26 Apr Caroline Hickman
University of Bath
Facing the difficult truths of the climate emergency; apocalyptic disaster or transformational moment in history?
4 May* (Tue) Rebecca Willis
Lancaster University
More democracy, not less: The role of democratic participation for climate action
10 May Ana Bastos
MPI-BGC
Compound extreme events from an ecological perspective
17 May Martin Palkovic
ECMWF
Digital Twin of planet Earth – what does it mean for computing in meteorology?
24 May Paul Holland
BAS
Influence of anthropogenic forcing on thinning of the Antarctic Ice Sheet
1 Jun* (Tue) Mary-Jane Bopape
South African Weather Service
South African Weather Service weather and climate operations and research
7 Jun (15:00) James D. Doyle
Naval Research Laboratory
Arctic Cyclones and the Influence on Short-Term Sea Ice Change and Moisture Transport
14 Jun Sharanya J. Majumdar
University of Miami
African Easterly Waves and Tropical Cyclogenesis: Mechanisms and Predictability

SPRING 2021

11 Jan Annika Reintges
GEOMAR
Wind Stress-Induced Multiyear Predictability of Annual Sea Surface Temperature Anomalies in the Extratropical North Atlantic
18 Jan Marie Drouard
University Complutense of Madrid
Atmospheric blocking duration in the Northern Hemisphere
25 Jan Cancelled
01 Feb John Lynch
University of Oxford
Agriculture’s contribution to climate change and mitigation
08 Feb Tim Graham
Met Office
Global Atmosphere-Ocean Coupled NWP at the Met Office: towards operations and future developments
15 Feb Sarah Dry
writer & science historian
How climate became global: the history of an idea in six lives
22 Feb Cancelled
01 Mar Christian Grams
Karlsruhe Institute of Technology
Towards a dynamical understanding of predictability and forecast skill for weather regimes in the North Atlantic European region
08 Mar Ann Webb
University of Manchester
Maintaining Your Vitamin D Status: Climate vs Colour, Culture and Covid
15 Mar Sebastian Sippel
ETH Zurich
Characterizing and detecting climate signals in observations and models using statistical learning
22 Mar Jennifer Catto
University of Exeter
Stormy weather: understanding hazards from a weather system perspective

AUTUMN 2020

28 Sep Regina R. Rodrigues
Federal University of Santa Catarina
Marine heatwaves in the South Atlantic in the context of compound extreme events in South America
5 Oct Emily Grossman Emergency on Planet Earth
12 Oct Claudia Di Napoli
University of Reading (Environmental Science)
The human side of heat extremes: climatology and forecasting of heatwave-related health hazards
19 Oct Benjamin J. Murray
University of Leeds
Cloud-phase climate feedback and the importance of ice-nucleating particles
26 Oct Elizabeth A. Barnes
Colorado State University
Viewing Climate Signals through an AI Lens
2 Nov (15:00) Laure Zanna
New York University
Machine learning for physics-discovery and climate modeling
9 Nov Maria-Paz Zorzano Mier
Centre of Astrobiology, INTA/CSIC; Luleå University of Technology
Atmospheric observations of Mars, a multi-instrumental approach
16 Nov Karina Williams
Met Office
Water stress in the JULES land-surface model
23 Nov Marta Marcos
University of the Balearic Islands
Observations and drivers of coastal sea level extremes
30 Nov Cancelled
7 Dec Penny Maher
University of Exeter
The flexible modelling framework for the Met Office Unified Model (Flex-UM)

SUMMER 2020

20 Apr 2020 Cancelled
27 Apr Denis Sergeev
University of Exeter
Atmospheric convection plays a key role in the climate of tidally-locked terrestrial exoplanets: insights from high-resolution simulations
4 May Cristian Proistosescu
University of Illinois
We do live in the global mean: equilibrium climate sensitivity controls uncertainty in regional warming over the 21st century
11 May David Richardson
ECMWF
Verification and diagnostics at ECMWF – how we evaluate and understand the performance of the ECMWF forecasting system
18 May Stacey Hitchcock
University of Melbourne
The Environments and Dynamics of Heavy-Rain-Producing Mesoscale Convective Systems
26 May (Tuesday) Flavio Lehner
ETH Zurich
Partitioning and constraining uncertainties in climate projections
1 Jun Eun-Pa Lim
Bureau of Meteorology
The 2019 Southern Hemisphere polar stratospheric warming
8 Jun Kalli Furtado
Met Office
Evaluating and improving predictions of the east Asian climate: challenges and opportunities
15 Jun Isla Simpson
NCAR
Multi-decadal variability in the North Atlantic jet stream, its connection to SST variability and implications for decadal predictability in Western Europe
22 Jun (15:00) William Boos
University of California, Berkeley
Monsoon depressions:  mechanisms and trends of high-impact storms at the edge of the Tropics

SPRING 2020

13 Jan 2020 Yuri Shprits
GFZ (Germany) & UCLA (USA)
Application of the meteorological tools to predict weather in space
20 Jan Sonia Seneviratne
ETH
Climate extremes at 1.5°C vs 2°C of global warming: The role of land processes
27 Jan Nadine Unger
University of Exeter
Air pollution impacts on the carbon cycle and climate
3 Feb William Seviour
University of Bristol
The impact of ozone depletion on Southern Ocean climate
10 Feb Nils Wedi
ECMWF
Earth System Modelling at ECMWF – Progress and Challenges
17 Feb Rachel James
University of Oxford
Should water managers in African countries prepare for wetter or drier futures? Analysing modelled processes to improve information for decision makers
24 Feb Manuela Lehner
University of Innsbruck
Transport and exchange in the mountain boundary layer
2 Mar Kristian Strommen
University of Oxford
Jet Latitude Regimes and the Predictability of the North Atlantic Oscillation
9 Mar Florian Pappenberger
ECMWF
The Megxit score: who is the best?
16 Mar Seminar cancelled
23 Mar Seminar cancelled

AUTUMN 2019

30 Sep 2019 Magdalena Balmaseda
ECMWF
Current research challenges in the predictability at subseasonal and seasonal time scales
7 Oct Yohan Ruprich-Robert
Barcelona Supercomputing Center
The Atlantic Multidecadal Variablity: from its origins to its impacts
14 Oct Andrew Gettelman
NCAR
Through the Looking Glass: Cloud processes at the intersection of Climate Forcing and Feedback
21 Oct Nigel Roberts
Met Office @ Reading
How to make use of convection-permitting ensemble forecasts – development of the new probabilistic post processing system called IMPROVER
28 Oct Lizzie Kendon
Met Office
Future changes in extremes at convection-permitting scales
4 Nov Cathy Hohenegger
MPI Hamburg
Is convective organization more than candy for the eyes?
11 Nov Irina Sandu
ECMWF
How uncertainties in the representation of orography and its impacts affect the skill of weather forecasts
18 Nov Guy Dagan
University of Oxford
Constraining the spatial scale of precipitation changes due to anthropogenic forcing using an atmospheric water and energy budget perspective
25 Nov Seminar cancelled
2 Dec Seminar cancelled
9 Dec Stephen English
ECMWF
Recent trends and future prospects for the assimilation of observations in Earth System prediction

SUMMER 2019

29 April 2019 Daniel Partridge
University of Exeter
A new approach for constraining the sources and transport of climate active aerosols over pristine regions in GCMs
7 May
(Tuesday)
Andreas Fink
Karlsruhe Institute of Technology
The challenge to predict rainfall in West Africa
13 May Simon Dadson
CEH Wallingford
Hydro-JULES: Next generation hydrological and land surface predictions
20 May Roberta D’Agostino
MPI Hamburg
Northern Hemisphere monsoon response to mid‐Holocene orbital forcing and greenhouse gas‐induced global warming
28 May
(Tuesday, Nike LT Agriculture)
Cecilia Bitz
University of Washington
Polar Regions as Sentinels of Different Climate Change
3 June Gregor Leckebusch
University of Birmingham
Understanding Variability of Severe Extra-Tropical Cyclones and Wind Storms
10 June Wenmin Man
Institute of Atmospheric Physics, Beijing
ENSO and hydroclimate responses to volcanic eruptions at different latitudes
24 June Victoria Sinclair
University of Helsinki
The response of extra-tropical cyclones to warming in idealised aqua-planet simulations

SPRING 2019

14  January 2019 Laure Zanna
University of Oxford
Ocean Heat Uptake and Dynamic Sea Level: Past and Future Uncertainty
21 January Maarten Ambaum
University of Reading
Thermodynamic cycles in the stratosphere
28 January Ian Boutle
Met Office
It’s all a bit foggy: from forecast busts to climate forcing!
4 February Piers Forster
University of Leeds
Simple climate models: worth their weight in code?
11 February Penny Holliday
NOC, Southampton
Freshwater transport and storage in the subpolar North Atlantic
18 February Chiara Marsigli
DWD
Verification of convective-scale ensembles: open issues from developer’s and user’s perspective
25 February Joeri Rogelj
Imperial College London
The science of 1.5°C – from political call to IPCC Special Report
4 March Chris Brierley
University College London
Defining the preindustrial: impacts on exposure to warming and social justice
11 March Paolo Davini
Institute of Atmospheric Sciences and Climate, Bologna
Atmospheric blocking simulation in global climate models: yesterday, today and tomorrow.
18 March Andreas Christen
University of Freiburg
Using stable isotopes to attribute carbon dioxide sources in the urban atmosphere
25 March Joe Galewsky
University of New Mexico
The Drunkard’s Search: Constraining lower-tropospheric mixing with stable isotopologues of water vapor

AUTUMN 2018

1 October 2018 Maisa Rojas Corradi
Universidad de Chile
Recent climate change in Chile: Anthropogenic drying megadrought and projections
8 October Noel Keenlyside
University of Bergen
Is it important to reduce climate model biases?
15 October Chris Taylor
CEH, Wallingford
Drivers of High Impact Weather in West Africa
22 October Chiel van Heerwaarden
Wageningen University
Simple models of convective aggregation and the role of the sea surface therein
29 October Seminar cancelled
5 November Bruce Ingleby
ECMWF, Met Office
Radiosondes and Numerical Weather Prediction
12 November Nick Watkins
University of Warwick
Fluctuations and correlations: space weather and earth climate
19 November Franco Marenco
Met Office
Using lidar for aerosols and clouds, from aircraft and satellites: scientific and operational applications
26 November Matt Rigby
University of Bristol
Some challenges for the Montreal Protocol, identified in recent atmospheric observations of ozone depleting substances
3 December Hans Linderholm
University of Gothenburg
Reconstructing the jet stream
10 December Bob Beare
University of Exeter
A simple model of a balanced boundary layer coupled to a large-scale convective circulation

Summer 2018

16 April 2018 Florent Brient
CNRM/MétéoFrance, Toulouse
Tropical marine stratocumulus and their influence on the climate system
23 April No Seminar
30 April Chris Lintott
University of Oxford
Tales from the Zooniverse
8 May (Tuesday 1PM) Adam Scaife
Met Office
A signal to noise paradox in climate science
14 May Andrew Ross
University of Leeds (NCAS)
Forest canopy flows over hilly, heteorogeneous terrain – theory and experiments
21 May Jean-Paul Vanderlinden
CEARC, Paris
Transdisciplinary climate studies: experimenting localized integrated art-science-policy approaches to knowledge production, sharing, and use
29 May (Tuesday 1PM) Peer Nowack
Imperial College London
The representation of ozone in climate sensitivity simulations: from interactive chemistry to machine learning
4 June Olivia Martius
University of Bern
Recent hail research in Switzerland – the challenges and delights of complex orography and crowdsourced data

Spring 2018

Date Speaker Title
8 Jan Euan Nisbet 
Royal Holloway University
Methane and the Paris agreement
15 Jan Wei Chen 
Institute of Atmospheric Physics, Chinese Academy of Sciences
Anthropogenic influence on recent change in temperature extremes over China
22 Jan Aidan Brocklehurst 
AON Benfield Impact Forecasting
A probabilistic catastrophe model for wind storms in Europe
29 Jan Heather Graven 
Imperial College
Radiocarbon as a carbon cycle tracer in the 21st century
5 Feb Stephen Thomson 
University of Exeter
Atmospheric responses to SST anomalies: background-state dependence, teleconnections, and local effects
12 Feb Wendy Parker 
Durham University
Let’s not confirm (or falsify) our models
19 Feb Ed Hawkins, Stephen Burt 
University of Reading
Operation Weather Rescue: to Ben Nevis and beyond
26 Feb Michelle Cain 
Oxford Martin School, University of Oxford
Climate metrics under ambitious mitigation
5 Mar Yoko Tsushima 
Met Office
Use of a Perturbed Parameter Ensemble to Understand Model Errors in Clouds and their Impact on Cloud Feedbacks
12 Mar Jordi Vila  Evapotranspiration and cloud variability at regional sub-grid scales
19 Mar Thomas Birner 
Colorado State University
The changing width of Earth’s tropical belt

Autumn 2017

Date Speaker Title
25 Sep Stephen Yeager 
NCAR
Decadal climate prediction in the large ensemble limit
2 Oct Jun-Ichi Yano 
CNRM, Toulouse
Tropical Atmospheric Madden-Julian Oscillation: Strongly-Nonlinear Free Solitary Rossby Wave?
9 Oct Ivan Haigh 
NOC, University of Southampton
100 years of coastal flooding in the UK
16 Oct Maria Rugenstein 
MPI Hamburg
Equilibrating GCMs – the difference between effective and equilibrium climate sensitivity
23 Oct Derek Posselt 
JPL, Pasadena
The Role of Cloud Processes in Weather-Climate Interactions
30 Oct Annica Ekman 
Stockholm University
Finding links between regional air pollution reductions and climate using the Norwegian Earth System Model
6 Nov Jens Bange 
University of Tübingen
Using small unmanned research aircraft (UAV) for atmospheric turbulence measurements
13 Nov Daniel McCoy 
University of Leeds
Insights into the effects of aerosols on cyclones from convection-permitting simulations
20 Nov Stephen Briggs 
European Space Agency
Climate change – observations, indicators and response
27 Nov Ed Gryspeerdt 
Imperial College
Causality in the atmosphere: How do aerosols influence clouds?
4 Dec Dieter Scherer 
TU Berlin
Regional climate studies in High Asia – How to map a terra incognita?

Summer 2017

Date Speaker Title
18 Apr (Tuesday) Gabriel Chiodo 
Columbia University, New York
On the importance of ozone feedbacks in the climate system
24 Apr Hugo Lambert 
University of Exeter
Land-ocean shifts in tropical precipitation under climate change
2 May (Tuesday 1PM) Peter Good 
Met Office
Nonlinear rainfall change: a tale of 2Ks
8 May Tapio Schneider 
Caltech, Pasadena
How low clouds respond to warming: Observational, numerical, and physical constraints
15 May Chris Bretherton 
University of Washington, Seattle
Ultraparameterization – global simulation of clouds with the grid resolution of large-eddy simulations
22 May Mark McCarthy 
Met Office
The National Climate Information Centre: Accessing historical climate observations
30 May (Tuesday) Hiro Masunaga 
University of Nagoya
A simple model of tropical convection with a moisture storage closure
5 Jun Chris O’Reilly 
University of Oxford
Seasonal forecast skill of Northern Hemisphere winters over the 20th century

Spring 2017

Date Speaker Title
9 Jan Jonathan Gregory  The inconstancy of transient climate response
16 Jan Celia Petty 
Evidence for Development / Walker Institute
Mapping the impact of climate data on rural livelihoods: new work in sub Saharan Africa
23 Jan Peter Read 
University of Oxford
Macroturbulent “cascades” of energy and enstrophy in models and observations of planetary atmospheres
30 Jan Stephan Pfahl 
ETH Zurich
Understanding the regional pattern of changes in extreme precipitation in a warming climate
6 Feb Estel Cardellach 
IEC Barcelona
Novel GPS applications for meteorology
13 Feb Peter Janssen 
ECMWF
Ocean Waves and Extreme events
20 Feb Yavor Kostov 
University of Oxford
Understanding Southern Ocean SST Trends in Historical Simulations and Observations
27 Feb Annalisa Cherchi 
INGV, Italy
The South Asian monsoon and the Mediterranean: a multi-model analysis
6 Mar Daniela Domeisen 
GEOMAR Kiel, Germany
Atmospheric blocking and the connection to the stratosphere
13 Mar David Karoly 
University of Melbourne
An Australasian hockey stick and associated climate wars
20 Mar Myles Allen 
University of Oxford
The carbon budget for 1.5 degrees: does meeting the goals of the Paris Agreement mean geoengineering?

Autumn 2016

Date Speaker Title
26 Sept Julian Mak 
University of Edinburgh
Emergent eddy saturation from an energy constrained eddy parameterisation
3 Oct Pu Lin 
GFDL
Understanding climate changes in the UTLS region in response to anthropogenic forcings
10 Oct Richard Seager 
LDEO Columbia
The California Drought
17 Oct Veronique Ducrocq 
Meteo-France and CNRS
Understanding and predicting convective storms
24 Oct Dim Coumou 
PIK Potsdam
Extreme Weather and Atmosphere Dynamics
31 Oct Thorsten Mauritsen 
MPI Hamburg
On the missing iris-effect
7 Nov Jakob Runge 
Imperial College London
Causal inference methods in the geosciences
14 Nov Alan Blyth 
NCAS Weather (Leeds)
Investigation of heavy rainfall in convergence-line convection over the SW peninsula of England
21 Nov Kevin Trenberth 
NCAR
Implications of Earth’s energy imbalance for climate
28 Nov Phil Gill 
Met Office
Development and verification of global aviation turbulence forecasts
5 Dec Hannah Christensen 
Oxford
The curious success of a simple stochastic scheme in weather and climate models

Summer 2016

Date Speaker Title
18 Apr Jim Haywood 
Met Office
The aerosol indirect effect: new evidence that second indirect effects are negligible
25 Apr Ming Bao 
Nanjing University
Cluster analysis of Northern Hemisphere wintertime 500-hPa flow regimes during 1920-2014
3 May Seminar cancelled
9 May Joanna Haigh 
Imperial
The Earth’s entropy budget and climate change
16 May Yohai Kaspi 
Weizmann Institute
Dynamics of eddy-driven jets and macroturbulent scales in the atmosphere
23 May Gerd Folberth 
Met Office
The biosphere: More than just a boundary condition
31 May Richard Forbes 
ECMWF
Microphysics Matters? A Global Perspective
6 Jun Richard Rotunno 
NCAR
The Fluid Dynamics of Tornadoes

Spring 2016

Date Speaker Title
11 Jan Philip Brohan 
Met Office
Heroism and disaster: two centuries of reanalysis
18 Jan Thomas Melvin and Chris Maynard 
Met Office
LFRic and other animals: Designing and building a software infrastructure for a new dynamical core on Exascale Architectures
GungHo! – A scalable dynamical core for weather and climate prediction
25 Jan Pierre Gauthier 
Universite du Quebec a Montreal
Assessment of the dynamical balance of regional climate models using physical tendencies and data assimilation
1 Feb Ray Pierrehumbert 
University of Oxford
Climate impact of beef production: An analysis without global warming potentials
8 Feb Lucy Cradden 
University College Dublin
Wind energy generation in Ireland – meteorological patterns and their impacts on the power system
15 Feb Paul Valdes 
University of Bristol
Tuning GCM’s with palaeoclimate data
22 Feb Patrick Hyder 
Met Office
Air-sea exchange variability and its atmosphere/ocean model resolution-dependence in HadGEM3
29 Feb Friederike Otto 
University of Oxford
Thermodynamics vs. dynamics – a holistic approach to extreme event attribution
7 Mar Ileana Blade Mendoza 
University of Barcelona
The summer NAO in observations and CMIP models: impacts on precipitation and sea-ice projected trends
14 Mar David Thompson 
Colorado State University
Estimating the role of internal climate variability in future climate trends
21 Mar Samar Khatiwala 
University of Oxford
Constraining ocean ventilation pathways and time scales with observations and models

Autumn 2015

Date Speaker Title
28 Sep Liam Brannigan 
University of Oxford
Intense PV mixing and nutrient upwelling in ocean anti-cyclones caused by submesoscale instabilities
5 Oct Rupert Klein 
Freie Universitaet Berlin
Multi-scale asymptotic analyses of atmospheric motions
12 Oct David Ridley 
MIT
Multi-decadal changes in aerosol: Insight into the drivers and effects of mineral dust, carbonaceous and volcanic sulphate particles
19 Oct Stefan Siegert 
University of Exeter
Correlation and beyond: A recipe for forecast verification
26 Oct Caroline Muller 
CNRS
Self-aggregation of atmospheric convection in idealized simulation
2 Nov Thomas Spengler 
University of Bergen
Polar lows
9 Nov Alejandra Sanchez-Franks 
NOCS
Impact of the Atlantic meridional overturning circulation on the decadal variability of the Gulf Stream path and regional chlorophyll and nutrient concentrations
16 Nov Beth Ebert 
Bureau of Meteorology
How good is it? Improving how we assess forecasts
23 Nov Sandra Chapman 
Warwick University
A data centred method to estimate and map changes in the full distribution of daily temperature and precipitation
30 Nov Joseph Daron 
Met Office
Generating and communicating climate information to guide development and adaptation decisions in developing countries
7 Dec Jan Zika 
Imperial College London
Observed amplification of the global water cycle and its impact on the energetics of the atmosphere

Summer 2015

Date Speaker Title
20 Apr Stephen Briggs 
European Space Agency
Climate Observations and the Contribution of Space
27 Apr Mark Webb 
UK Met Office
The impact of parametrized convection on cloud feedback
5 May Wouter Berghuijs 
University of Bristol
Alteration of Mean Streamflow and Evaporation Under Snow Loss
11 May Tobias Kuna and Steve Langdon 
University of Reading
Mathematical research with meteorological applications in Reading
18 May Geoff Vallis 
University of Exeter
Response of the large-scale structure of the atmosphere to global warming
26 May Tamsin Edwards 
The Open University
Potential sea level rise from Antarctic ice sheet instability constrained by observations
1 Jun Chris Chen 
Imperial College London
Turbulence in the Solar Wind: Recent Advances
8 Jun Michael de Podesta 
National Physical Laboratory
How do we really know what the temperature is?

Spring 2015

Date Speaker Title
12 Jan Eugene Clothiaux 
Penn State University
Coherent Scattering from Cloud Drops and Ice Crystals
19 Jan David Battisti 
University of Washington
The impact of Increased CO2 on Summertime Temperature Variability
26 Jan Adam Levy 
University of Oxford
Rain, Brains and Climate Change: improving understanding of regional precipitation with medical image registration techniques
2 Feb Ruth Doherty 
University of Edinburgh
TBC
9 Feb Sheldon Bacon 
National Oceanography Centre
North Atlantic and Arctic Ocean Circulation and Fluxes
16 Feb Cathryn Birch 
Met Office / University of Leeds
The role of convection in the water cycle of the West African Monsoon
23 Feb Richard Scott 
University of St Andrews
Barotropic sudden warming and internal variability of the winter stratosphere
2 Mar Ben Taylor 
Plymouth Marine Laboratory
The NERC Earth Observation Data Acquisition and Analysis Service (NEODAAS): Science, Support and Access
9 Mar James Screen 
University of Exeter
Weighing the evidence for and against more frequent extreme midlatitude weather in response to Arctic warming
16 Mar Craig Bishop 
Naval Research Laboratory
Climate model dependence and the Ensemble Dependence Transformation of CMIP projections
23 Mar Steve Rumbold 
Met Office
Ammonium nitrate aerosol in UKESM1 — It’s a semi-volatile situation!

Autumn 2014

Date Speaker Title
29 Sep Johannes Laube 
University of East Anglia
Newly detected ozone-depleting and greenhouse gases in the atmosphere
6 Oct Cathy Hohenegger 
Max Planck Institute for Meteorology
Controls on and representation of land-atmosphere interactions across scales
13 Oct Clara Deser 
National Center for Atmospheric Research
Uncertainty in climate change projections: the role of internal atmospheric circulation variability
20 Oct Christoph Schaer 
ETH Zurich
Towards convection-resolving climate simulations
27 Oct Edmund Henley 
UK Met Office
Thermospheric data assimilation
3 Nov John Scinocca 
Environment Canada
The impact of model fidelity on climate projections and climate predictions
10 Nov Aarnout Van Delden 
IMAU / Utrecht University
Diabatic-dynamical interaction in the general circulation of the atmosphere
17 Nov Kwinten Van Weverberg 
UK Met Office
Evaluation of clouds in climate models using ARM-data: a time-step approach
24 Nov Peter Cox and Chris Huntingford 
University of Exeter and Center for Ecology and Hydrology
Climate Variability: How it is changing and what it tells us about the future
1 Dec Grae Worster 
University of Cambridge
Dynamics of marine ice sheets
8 Dec Anne Mathers Lawrence 
University of Reading
Climate Patterns and Meteorological Disasters in Medieval Thought

Summer 2014

Date Speaker Title
28 Apr Andy Elvidge 
University of East Anglia
Foehn warming and foehn jets: the Antarctic Peninsula as a natural laboratory
6 May Adam Scaife 
UK Met Office
Long range predictability of the North Atlantic Oscillation
12 May Sukyoung Lee 
Pennsylvania State University
A theory for polar amplification from a general circulation perspective
19 May Chris Taylor 
Centre for Ecology and Hydrology (UK)
Understanding land impacts on weather using earth observation data
27 May Elie Bou Zeid 
Princeton University
New insights into the dynamics of the stable atmospheric boundary layer from direct and large-eddy simulations
4 Jun Steve Sherwood 
University of New South Wales
Rethinking the dynamics of convection from meso to thermal scale
9 Jun Ellie Highwood and Simon Chandler-Wilde 
University of Reading
The Athena Swan Project
16 Jun Helen Brindley 
Imperial College London
TBC
23 Jun Tobias Zinner 
Ludwig Maximilians University Munich
3D cloud side remote sensing – Droplet radius and its link to aerosol properties
30 Jun no departmental seminar  because of MSc oral exams
7 Jul Olivia Romppainen-Martius 
University of Bern
Extreme weather events in Switzerland – story lines and processes

Spring 2014

Date Speaker Title
13 Jan Detlef Mueller 
University of Hertfordshire
East Asian pollution observed with Raman Lidar in South Korea
20 Jan Tyrone Dunbar 
UK Government, Department of Energy and Climate Change
TBC
27 Jan Mike Herman 
New Mexico Institute of Mining and Technology
The Spectral Weak Temperature Gradient Approximation
3 Feb Shuhua Chen 
University of California, Davis
Dust and weather
10 Feb Nigel Fox 
National Physical Laboratory
Metrology for Earth Observation and Climate
17 Feb David Marshall 
University of Oxford
A geometric framework for interpreting and parameterising geostrophic ocean turbulence
24 Feb Adrian Raftery 
University of Washington
Probabilistic weather forecasting: recent developments in Bayesian model averaging
3 Mar Afandi Darlington 
UK Government, Department for Transport, Air Accidents Investigation Branch
Weather — its role in aircraft accidents
10 Mar Mai Mai Lam 
British Antarctic Survey
Response of the polar troposphere and stratosphere to changes in the global atmospheric electric circuit associated with solar wind variability
17 Mar Jeurg Beer 
Swiss Federal Institute of Aquatic Science and Technology
TBC

Autumn 2013

Date Speaker Title
30 Sep (Nike LT) Dennis Hartmann 
University of Washington
Trends and Variability in Southern Ocean Clouds and their Relation to Climate Change
7 Oct John Thuburn 
University of Exeter
Mimetic Numerical Methods for Weather and Climate Prediction
14 Oct Alex Chartier 
University of Bath
Ionospheric Data Assimilation and Forecasting
21 Oct Gilbert Brunet 
Met Office
Sub-seasonal Predictability And Dynamical Processes: The Two-way MJO and NAO Interaction
28 Oct Richard Seager 
Columbia University
The Importance of the Montreal Protocol for Protecting the Earth’s Hydroclimate
4 Nov Kate Willett 
Met Office
The International Surface Temperature Initiative (ISTI): Dragging land surface temperature data kicking and screaming into the 21st Century
11 Nov Jon Blower 
Reading e-Science Centre
The Hitchhiker’s Guide to Open Data
18 Nov Stephen Blenkinsopp 
Newcastle University
Hourly and multi-hourly precipitation climatology in the UK and variability in extremes
25 Nov Fiona O’Connor 
Met Office
Climate forcing from potential methane releases from permafrost, wetlands, and marine hydrates
2 Dec Beatriz Monge-Sanz 
ECMWF
Is stratospheric air getting younger with time?
9 Dec Lee Miller 
Max-Planck Institute for Biogeochemistry
Recent advancements in estimating power potentials and climatic impacts of renewable energy technologies

Summer 2013

Date Speaker Title
15 Apr Shaun Lovejoy 
McGill University
Emergent atmospheric laws: Why the weather and the climate are not what you expect
22 Apr: Madejski LT Tim Palmer 
University of Oxford
Stochastic Parametrisation: Six Reasons For, One reason against
29 Apr Erland Källén 
ECMWF
Factors influencing skill improvements in the ECMWF forecasting system
7 May: Tuesday 1pm Karen Heywood 
University of East Anglia
Ocean processes at the Antarctic continental slope – or five ways to lose a Seaglider?
13 May Liz Morris 
Scott Polar Reseach Institute
Mukluks on the snow: ground truth experiments in support of CryoSat
28 May: Tuesday 1pm Jean-Noel Thepaut 
ECMWF
Climate reanalysis at ECMWF
3 Jun Richard Chandler 
University College London
Exploiting strength, discounting weakness: combining information from multiple climate simulators
10 Jun: 1pm Andy Shepherd 
University of Leeds
A reconciled estimate of ice sheet mass balance
17 Jun Erich Fischer 
ETH Zurich
Summer heat waves in a changing climate: Driving mechanisms, projections, uncertainties and impacts
24 Jun Eric Guilyardi 
IPSL Paris/NCAS-Climate
Understanding ENSO in climate models: from statistics to process-based metrics
1 Jul Sandy Harrison 
University of Reading
Evaluation of the CMIP5 simulations using palaeoreconstructions
22 Jul Gang Chen 
Cornell University
Wave activity, eddy diffusivity, and the jet variability

Spring 2013

Date Speaker Title
7 Jan Rym Msadek 
GFDL/NOAA and UCAR
Decadal predictions of Atlantic variability: promise and limitations
14 Jan Byron Drew, Tony Ramsay 
MetraWeather
Commercial Meteorology
28 Jan Alan Grant 
University of Reading
The Secret and Sordid World of Parametrization
4 Feb Drew Purves 
Microsoft Research, Cambridge
Balanced Complexity modelling of the Terrestrial Carbon Cycle
11 Feb Thordis Thorarinsdottir 
Norwegian Computing Center
Recovering the multivariate dependencies of statistically post-processed ensemble forecasts
18 Feb Apostolos Voulgarakis 
Imperial College
Using composition-climate models to understand global and regional radiative forcing-response relationships
19 Feb Tuesday 1pm Sandrine Bony 
LMD/CNRS
How much will future changes in tropical circulation and precipitation depend on global warming?
25 Feb Michael McIntyre 
University of Cambridge
Some musings on science in general and atmospheric dynamics in particular, with remarks on differential rotation within the Sun and on Jupiter
4 Mar Robin Chadwick 
Met Office
Spatial Patterns of Precipitation Change in CMIP5: Why the Rich don’t get Richer in the Tropics
11 Mar Alan Thorpe 
ECMWF
Superstorm Sandy: best ever numerical weather prediction?
18 Mar Isaac Held 
GFDL/NOAA
Some Approaches to Climate Theory

Autumn 2012

Date Speaker Title
15 Oct Paul Bates 
Univeristy of Bristol
Observation and modelling of global surface water flows
22 Oct Peter Hitchcock 
University of Cambridge
Arctic Polar-night Jet Oscillation Events
29 Oct Jim Wild 
Lancaster University
Geomagnetically induced currents: a space weather hazard to electricity supply infrastructure
5 Nov David Randall 
Colorado State University
Simulations of tropical variability with a super-parameterization
12 Nov Steven Abel 
Met Office
Why does it always rain on me? Improving the representation of drizzle in the Unified Model
19 Nov Kathryn McWilliams 
University of Saskatchewan
Influences of the Interplanetary Magnetic Field on the Earth’s Ionosphere
26 Nov Todd Ringler 
Los Alamos National Laboratory
A Multi-Resolution Modeling Approach for Global Climate Simulation
3 Dec Jane Mulcahy 
Met Office
Representation and impacts of aerosols in the Met Office global NWP model
10 Dec Leon Hermanson 
Met Office
Enabling decadal prediction through the assimilation of the Atlantic Meridional Overturning Circulation at 26N

Summer 2012

Date Speaker Title
16 Apr Paul O’Gorman 
MIT
The response of mean and extreme precipitation to climate change: theory, simulations, and observations
23 Apr Glenn Shutts 
Met Office
Stochastic physics and its justification
30 Apr Roger Stern 
Statistical Services Centre
Climatic variability and change – using the historical records to add extra value
8 May (Tuesday) Stuart Webster 
Met Office
Kilometre-scale Unified Model simulations of super-typhoon Megi
21 May Tamsin Mather 
University of Oxford
Volcanoes and their atmospheric impacts
28 May Pavel Berloff 
Imperial College
Conundrum of geostrophic turbulence in the oceans: Multiple alternating jets, waves and vortices
11 Jun Ray Bates 
University College Dublin
Climate stability and sensitivity in some simple conceptual models
19 Jun: 1pm (Tuesday) Dmitry M. Sonechkin 
P. P. Shirshov Institute of Oceanology
On the role of natural factors in the current climate change: Climatic perspectives for nearest and more distant future
25 Jun Anna Chuter 
University of Surrey
The analysis of DALEC, a simple carbon cycle model

Spring 2012

Date Speaker Title
16 Jan Naomi Vaughan 
(Tyndall Centre for climate change research)
Could solar geoengineering help or hinder climate change mitigation
23 Jan Timothy Gill 
(National Air Traffic Control Service)
Environment and airspace efficiency: NATS UK airspace
30 Jan Seymour Laxon 
(University College London)
When will the Arctic become ice free?
6 Feb Tim Andrews 
(Met Office)
Forcing, feedbacks and climate sensitivity in CMIP5 couple atmosphere-ocean climate models
13 Feb Pascal Marquet 
(Meteo France)
On the use of different forms of available energies or exergy in Meteorology
20 Feb Cyril Morcrette 
(Met Office)
Nephological conjuring: Do better clouds lead to better cloud scores?
27 Feb Tim Jupp 
(University of Exeter)
On the visualisation, verification and recalibration of ternary probabilistic forecasts
5 Mar Anja Schmidt 
(University of Leeds)
Large-scale icelandic flood lava eruptions: from aerosol microphysical processes to human health impacts
12 Mar Christoph Gebhardt 
(DWD, Germany)
Limited-area Ensemble Prediction Systems: general aspects and the COSMO-DE EPS
20 Mar Kevin Trenberth 
(NCAR, USA)
Climate extremes and climate change: The Russian Heat Wave and other Climate Extremes of 2010 and 2011

Autumn 2011

Date Speaker Title
10 Oct George Bryan 
(NCAR)
Reconciling observations and numerical simulations of a mesoscale convective system
17 Oct Ben Webber 
(University of East Anglia)
The Dynamical Ocean Component of the Madden-Julian Oscillation
24 Oct Alina Barbulescu 
(Ovidus University of Constanta)
Models for precipitation and temperature evolution. Case study: the Black Sea region.
31 Oct Annika Seppälä 
(British Antarctic Survey)
Solar effects on the polar atmosphere: The role of energetic particle precipitation
7 Nov Gareth Thomas 
(University of Oxford)
Producing atmospheric aerosol data for climate science from satellite remote sensing
14 Nov Kevin Horsburgh 
(National Oceanography Centre)
European storm surges in a future climate: where has all the weather gone?
21 Nov John Marsham 
(University of Leeds)
Recent observations of elevated mesoscale convective systems in the UK and USA
28 Nov Phillipe Keckhut 
(LATMOS)
Monitoring the middle atmosphere with lidar in complement with satellite observations
5 Dec Pedro Miranda 
(University of Lisbon)
EC-Earth model development and results
12 Dec David Southwood 
(Imperial College London)
Space in a Modern Society

Summer 2011

Date Speaker Title
3 May Andrea Kaiser-Weiss 
(University of Reading)
Sea Surface Temperature as observed from space – limits and challenges
9 May Gabi Hegerl 
(University of Edinburgh)
Causes of change in European climate over the last few centuries
16 May Peter Knippertz 
(University of Leeds)
Dust Storms — A Great Challenge on the Way to Earth System Modelling
31 May Bob Molinari 
(National Oceanography Centre, Southampton)
CLIVAR: The Present, Future and Research Opportunities
6 June Mike Ellis 
(British Geological Survey)
Climate Change Research at the British Geological Survey
13 June Oleg Saenko 
(Canadian Centre for Climate Modelling and Analysis)
Subduction and overturning in a warmer ocean
20 June Kevin Horsburgh 
(National Oceanography Centre, Liverpool)
European storm surges in a future climate: where has all the weather gone?

Spring 2011

Date Speaker Title
17 January Colm Caulfield 
(University of Cambridge)
Too much of a good thing? The efficiency of stratified mixing
24 January Adrian Simmons 
(ECMWF)
Monitoring and short-term forecasting of atmospheric composition
31 January James Tate 
(University of Leeds)
Trends in UK vehicle emissions: How conflicting PM10, NOX and CO2 priorities have led to ambient NOX and NO2 concentrations levelling off in recent years
7 February Mark Macklin 
(University of Wales)
UK flooding and climate change: a long-term geomorphological perspective on adaption and mitigation
14 February Myles Allen 
(University of Oxford)
Constraining future climate — from climateprediction.net to the trillionth tonne
21 February Arnaud Czaja 
(Imperial College)
A new mechanism for ocean-atmosphere coupling in midlatitudes
28 February Rodrigo Caballero 
(University College Dublin, Ireland)
Climate dynamics under supergreenhouse conditions in a GCM
7 March Susan Solomon 
(NOAA ESRL, USA)
Antarctic and global climate change: Stratospheric connections
14 March Martin Visbeck 
(IFM-GEOMAR, Germany)
Impact of the Southern Annual Mode on the Southern Ocean stratification and circulation
21 March Tamsin Edwards 
(University of Bristol)
The power of the past: using palaeoclimate data to quantify uncertainties in climate prediction

Autumn 2010

Date Speaker Title
11 October Mel Sandells 
(University of Reading, NCEO, ESSC)
From field site modelling to global observations of snow
18 October Martin Widmann 
(University of Birmingham)
Correction of GCM-simulated precipitation
25 October Matthias Zahn 
(University of Reading, ESSC)
Estimation of past and future polar low frequency over the North Atlantic
1 November Ann Shelly 
(UK Met Office)
Overview of recent model development in medium range models at the Met Office
8 November Phil Anderson 
(British Antarctic Survey)
Probing the Stable Boundary Layer: Challenges and emerging solutions
15 November Adrian Lock 
(UK Met Office)
Boundary layer cloud modelling at the Met Office
22 November Richard Greatbatch 
(IFM-GEOMAR, Kiel University, Germany)
Two major modes of variability of the East Asian Summer Monsoon and their possible origins
29 November Harry Hendon 
(Centre for Australian Weather and Climate Research)
Role of air-sea interaction for seasonal prediction of the Australian Summer Monsoon
6 December Suzanne Bevan 
(Swansea University)
A GLIMPSE of the Greenland Ice Sheet
13 December Jacques Vanneste 
(University of Edinburgh)
Dispersion: the large-deviation regime

Summer 2010

Date Speaker Title
19 April Colm Caulfield 
(University of Cambridge)
Too much of a good thing? Bounds on stratified mixing
26 April Barbara Maher 
(Lancaster University)
Magnetic trees: a quantitative surrogate for particulate pollution
4 May Roel Neggers 
(Royal Netherlands Meteorological Institute (KNMI))
Overlap statistics of boundary layer cumuliform cloud fields in large-eddy simulations
10 May Elizabeth Kendon 
(UK Met Office)
Understanding extreme rainfall processes and the reliability of future projections
17 May Michael Rogerson 
(University of Hull)
Timing and origin of humid events in Libya during the last glacial cycle: perspectives from radioisotopes and stalagmites
24 May David Vaughan 
(British Antarctic Survey)
Ice climate and sea level rise: Science and myth
1 June Ruediger Gerdes 
(Alfred Wegener Institute for Polar and Marine Research, Germany)
Recent and future changes in Arctic sea ice – Impacts on atmospheric and oceanic circulations
7 June Ben Johnson 
(UK Met Office)
Measurement and modelling of dust aerosol
14 June David Stevens 
(University of East Anglia)
High-resolution seasonal to decadal climate prediction
21 June James Tate 
(University of Leeds)
Trends in UK passenger car emissions: The impact of conflicting particulate matter, nitrogen oxides and carbon dioxide priorities

Spring 2010

Date Speaker Title
11 January Kerry Emanuel 
(Massachusetts Institute of Technology)
Hurricanes and Climate
18 January Ian Mills 
(University of Reading, Chemistry)
Possible improvements for the International System of Units
25 January Jon Blower and Alastair Gemmel 
(University of Reading, ESSC)
Interactive visualization and intercomparison of data on the web
1 February Ole Peters 
(Grantham Institute, Imperial College)
The transition to convection
8 February Chris Hughes 
(Proudman Oceanographic Laboratory)
Jets, eddies, waves and meanders from sea level measurements
15 February Chris Davis 
(STFC Rutherford Appleton Laboratory)
Lightning, meteors and the global electric circuit
22 February Erland Kallen 
(European Centre for Medium-Range Weather Forecasts)
Arctic warming – Coupling to atmospheric circulation changes
1 March Alfonso Castrejon-Pita 
(Oxford University)
Synchronization in geophysical experiments, numerical models, and climate dynamics
8 March Sandrine Bony 
(Laboratoire de Meteorologie Dynamique, Paris)
Towards the assessment of cloud and moist processes in climate models: Progress and prospects
15 March Noora Eresmaa 
(Finnish Meteorological Institute)
Idealized 3-step method for mixing height estimation

Autumn 2009

Date Speaker Title
28 September Ming Cai 
(Florida State University)
Dynamical polar warming amplification and a new climate feedback analysis framework
05 October Helen Fairweather 
(Queensland Climate Change Centre of Excellence)
Responding to Climate Change in Queensland
12 October Gavin Pretor-Pinney 
(Cloud Appreciation Society)
Collecting Clouds: Gavin Pretor-Pinney on the pleasures and importance of cloudspotting
19 October Gareth Jones 
(Met Office Hadley Centre)
Influences on climate since the 1850s: the changing human and natural contributions to climate change
26 October Thomas Kleinen 
(Max-Planck-Institute for Meteorology)
Testing hypotheses on Little Ice Age climate
02 November Paul Connolly 
(University of Manchester)
Investigations into the formation of snowflakes in the Manchester Ice Cloud Chamber
09 November Sarah Hallerberg 
(University of Chemnitz, Germany)
Extreme Events: The larger the better predictable?
16 November Marc Bocquet 
(CEREA, Ecole des Ponts ParisTech)
Choosing the geometry of control space for an optimal assimilation of observations
23 November Dargan Frierson 
(University of Washington)
Studies of the general circulation of the atmosphere with a simplified moist GCM
30 November Klaus Fraedrich 
(Max-Planck-Institute for Meteorology)
Long term memory and 1/f-scaling in climate observations and models
07 December Mark Ringer 
(Met Office Hadley Centre)
The use of GPS radio occultation for climate studies

Summer 2009

Date Speaker Title
20 April Dave Frame 
(University of Oxford)
Science, decisions and climate mitigation policy
27 April Brian Hoskins 
(Imperial College and University of Reading)
The UK Climate Change Committee
5 May Tuesday Zhaomin Wang 
(British Antartic Survey)
Spin-up of Southern Hemisphere Subpolar Gyres in a Warming Climate
11 May Holger Meinke 
(Wageningen University, Netherlands)
From climate data to ‘practical wisdom’ – the role of adaptation science for agricultural risk management
18 May Geert van den Oldenburgh 
(KNMI, Netherlands)
Western Europe is warming much faster than expected
26 May Tuesday Graeme Stephens 
(Colorado State University, USA)
The water cycle and energy balance of the Earth – what’s new?
1 June Alfonso Castrejón-Pita 
(AOPP, University of Oxford)
Synchronization in geophysical experiments, numerical models, and climate dynamics
8 June Sonia Garcia 
(University of Limerick, Ireland)
A different type of HARLIE machine
15 June John Harries 
(Imperial College)
The Far Infrared Earth: water vapour feedback and planetary energy balance
22 June Aiguo Dai 
(NCAR, USA)
Is the Water Vapor Feedback the Same in Nature and Models?

Spring 2009

Date Speaker Title
6 Jan TUES John Marshall 
(MIT)
Thought experiments in climate and paleoclimate: speculations on the climate of an aquaplanet
8 Jan THUR Geoff Vallis 
(GFDL, Princeton University)
Science in the Age of Models: Is Theory still Relevant in Climate Research?
12 Jan
()
19 Jan Ken Carslaw 
(University of Leeds)
The global aerosol system: what can we learn from a new generation of global microphysics models?
26 Jan Adam Scaife 
(Met Office)
A dynamical mechanism for European winter climate change
2 Feb Zhaomin Wang 
(British Antarctic Survey)
Spin-up of Southern Hemisphere Subpolar Gyres in a Warming Climate
10 Feb TUES Bert Holtslag 
(Wageningen University)
Achievements and ongoing work in the GEWEX Atmospheric Boundary Layer Study
16 Feb Harm Jonker 
(Delft University of Technology)
Conditional instability of mesoscale structures in convective boundary layers
23 Feb Heini Wernli 
(Universitat Mainz)
Mid-latitude dynamics, diabatic processes and the atmospheric water cycle
2 Mar Philip Stier 
(AOPP, University of Oxford)
Assessment of the indirect aerosol effects in the latest generation global aerosol models
9 Mar Jeff Knight 
(Met. Office)
The Atlantic Multidecadal Oscillation: GCM simulations, impacts and decadal predictions
16 Mar Avi Lacser 
(Israel Institute for Biological Reasearch)
Urban Dispersion Modeling

Autumn 2008

Date Speaker Title
6 Oct David McGloin 
(University of Dundee)
Plucked from thin air: Studying airborne particles using optical tweezers
13 Oct Willem Sijp 
(University of New South Wales, Sydney)
The effect of along-isopycnal diffusion and diapycnal diffusion on North Atlantic Deep Water stability
20 Oct Kai Christensen 
(University of Oslo)
Wave-induced drift and deformation of oil spills and natural sea slicks
27 Oct Peter Liss 
(University of East Anglia)
Air-Sea Exchange of Trace Gases
3 Nov Mike Lockwood 
(Rutherford Appleton Laboratory)
TBC
10 Nov Christine Johnson 
(Met Office)
Medium-range multi-model ensemble combination and calibration
17 Nov Mark Webb 
(Met Office Hadley Centre)
Towards understanding the differing cloud radiative response mechanisms in GCMs
24 Nov Stan Yip 
(University of Exeter)
A Fast Bayesian method for updating hourly maps of ozone concentration levels by combining computer model output and observed station data
1 Dec Angela Maharaj 
(Macquarie University, Sydney)
An assessment of multiple westward propagating signals in south Pacific sea level anomalies
8 Dec
()

Summer 2008

Date Speaker Title
14 April Christian Franzke
(British Antartic Survey)
Systematic Identification of Metastable Atmospheric Flow Regimes
21 April David Thompson 
(Colorado State University)
Rethinking 20th century surface temperature variability
28 April David Lawrence 
(NCAR)
Abrupt sea ice loss, accelerated Arctic land warming, and rapid permafrost degradation: Investigations into the coupled nature of Arctic climate change
6 May Olivia Martius 
(ETH Zurich)
Breaking synoptic-scale Rossby waves in the tropopause region
12 May Richard Neale 
(NCAR)
The Impact of Convection on El Nino: From a Delayed Oscillator to a Series of Events
19 May Philippe Calliol 
(University of Sheffield)
Rossby wave nonlinear critical layers
27 May Alberto Arribas 
(Hadley Centre, Met Office)
The new Met Office seasonal forecasting system: scientific challenges
2 June Hugo Lambert 
(Hadley Centre, Met Office)
How much will precipitation increase with global warming?
9 June Chris Taylor 
(CEH Wallingford)
Land-atmosphere interactions: new perspectives from the African Monsoon Multidisciplinary Analyses
16 June David Thomson 
(Met Office)
The Met Office Atmospheric Dispersion Model “NAME”

Spring 2008

Date Speaker Title
7 Jan Mat Collins 
(Hadley Centre, Met Office)
Probabilistic Predictions of Climate Change
14 Jan Gabi Hegerl 
(University of Edinburgh)
Towards Detecting and Attributing Impact Relevant Climate Change
21 Jan Richard Scott 
(University of St Andrews)
Internal Variability of the Winter Stratosphere
28 Jan Gwendal Rivère 
(Météo-France, CNRM/GMAP/RECYF)
Barotropic Regeneration of Synoptic-scale Disturbances during Jet Crossing
4 Feb Keith Browning 
(Emeritus Professor, University of Reading)
Why do thunderstorms form where they do?
11 Feb Andrew Staniforth 
(Met Office)
Spherical coordinate systems for models of the global atmosphere
18 Feb William Ingram 
(Atmospheric, Oceanic and Planetary Physics, University of Oxford)
Making Sense of the Water Vapour Feedback on Climate Change
25 Feb Stephan Fueglistaler 
(Dept. of Applied Mathematics and Theoretical Physics, University of Cambridge)
Stratospheric Water Vapour and Climate
03 March Chris Hilson 
(School of Law, University of Reading)
Climate Change – A Legal Perspective
10 March Scott Osprey 
(Atmospheric, Oceanic and Planetary Physics, University of Oxford)
A New Light on Stratospheric Variability

Autumn 2007

Date Speaker Title
TUE 25 Sept John Latham 
(University of Manchester & NCAR)
A scheme for controlled global cooling via the albedo-enhancement of marine stratiform clouds
1 Oct Peter May 
(Bureau of Meteorology, Australia)
The Tropical Warm Pool International Cloud Experiment in Darwin – An overview and some early science results
8 Oct Helen Brindley 
(Imperial College)
Estimating the direct radiative effect of Saharan dust using GERB and SEVIRI
15 Oct Tim Lenton 
(University of East Anglia)
Tipping Points in the Earth System
22 Oct Dudley Chelton 
(Oregon State University, US)
Global observations of oceanic eddies by satellite altimetry
29 Oct Eric Deeleersnijder 
(Universite Catholique de Louvain, Belgium)
New developments and results of the Constituent-oriented Age and Residence time Theory (CART)
5 Nov Ray Bates 
(University College, Dublin)
Some considerations of the concept of climate feedback
12 Nov Peter Lynch 
(University College, Dublin)
The ENIAC forecasts: a re-creation
19 Nov Manoj Joshi 
(University of Reading)
The mechanisms behind the land/sea warming contrast in climate change
26 Nov Nina Petersen 
(University of East Anglia)
The Greenland Flow Distortion Experiment
3 Dec Andrew Lorenc 
(Met Office)
4D-Var and the Butterfly Effect
10 Dec Dave Thomson 
(Met Office)
The Met Office Atmospheric Dispersion Model “NAME” – CANCELLED

Summer 2007

Date Speaker Title
23 Apr Claude Frankignoul 
(UPMC, France)
Simulated variability of the North Atlantic circulation from 1953 to 2003
30 Apr Gavin Esler 
(University College, London)
The turbulent equilibration of an unstable baroclinic jet
Tuesday 8 May Till Kuhlbrodt 
(Potsdam Institute, Germany)
A decrease of the North Atlantic thermohaline circulation – likelihood, impacts, and avoidance strategies
14 May Franco Molteni 
(ECMWF)
Predictability estimates and forecast skill for tropical rainfall anomalies: results from the ECMWF seasonal forecast System-3
21 May Geraint Vaughan 
(University of Manchester)
Aerosols, Chemicals and Deep Convection
Tuesday 29 May Matt Sapiano 
(University of Maryland, US)
A new global analysis of precipitation
4 June Steven Dobbie 
(University of Leeds)
The effect of absorbing aerosols on the microphysics of stratocumulus
11 June Christophe Cassou 
(Cerfacs, France)
Role of the re-emerging SST anomalies on the winter-to-winter persistence of the NAO
18 June Ken Mylne 
(Met Office)
Short-range Ensemble Forecasting with MOGREPS
25 June Michael Vellinga 
(Hadley Centre, Met Office)
Interdependencies of northward ocean and atmosphere energy transports

Spring 2007

Date Speaker Title
15 Jan Martin Juckes 
(Rutherford Appleton Laboratory)
Millennial temperature reconstruction evaluation and intercomparison
22 Jan Jun-Ichi Yano 
(Meteo France)
How to ‘compress’ the climate system: multi-resolutional approaches for diagnoses and parameterisations
29 Jan Dominic Kniveton 
(Sussex)
Searching for a solar-cloud fingerprint
05 Feb Nick Brooks 
(East Anglia)
Lessons from the Past: Climate change, civilisation and the myth of progress
12 Feb Agatha de Boer 
(East Anglia)
Atlantic dominance of the Meridional Overturning Circulation
19 Feb Doug Smith 
(Met Office)
Decadal climate prediction: the impact of initial conditions
26 Feb Roger Stone 
(Queensland)
Achieving best practice in agricultural climatological outputs
5 Mar Marko Scholze 
(Bristol)
Including a simple fire representation in a Carbon Cycle Data Assimilation System \& A brief excurs on a risk analysis of world ecosystems
12 Mar Michael Ponater 
(DLR Oberpfaffenhofen, Germany)
The climate effect of condensation trails: Beyond radiative forcing
19 Mar Eric Wolff 
(British Antarctic Survey)
European Project for Ice Coring in Antarctica: 800,000 years of climate and environmental change from ice cores

Autumn 2006

Date Speaker Title
9 Oct Nilton Renno 
(University of Michigan, visiting University of Oxford)
Atmospheric Vortices: Theory, Dust Transport, and Electrification
16 Oct Peter Killworth 
(National Oceanography Centre)
Planetary wave response to surface forcing and to instability in the presence of mean flow and topography
23 Oct Grae Worster 
(University of Cambridge)
The Fluid Dynamics of Sea Ice
30 Oct Andy Morse 
(University of Liverpool)
Integrating application models – tropical disease – with probabilistic seasonal forecasts
6 Nov Conny Schwierz 
(University of Leeds)
Assessing high-impact weather using event-based climatologies – heavy precipitation, blocking
13 Nov Chris Wilson 
(Proudman Oceanographic Laboratory)
Oceanic and atmospheric storm tracks: the role of eddy vorticity forcing
20 Nov Mathew Williams 
(University of Edinburgh)
Investigating the terrestrial carbon cycle and land-atmosphere interactions via model-data fusion
27 Nov James Fleming 
(Colby College, Maine)
A History of Weather and Climate Control
4 Dec Paul James 
(Met Office)
The application of objectively classified European Synoptic Regimes in Ensemble Forecasting and Climate Modelling
11 Dec Judith Berner 
(ECMWF)
A Stochastic Energy Backscatter Scheme for the Simulation of Model Error in Ensemble Prediction Systems

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