Professor Helen Dacre
Professor
Research Interests:
- Development mechanisms of extratropical cyclones
- Pollution transport
- Volcanic ash dispersion
Current Research Projects:
- Radar-supported Next-Generation Forecasting of Volcanic Ash Hazard (R4Ash)
- Detection and Attribution of Regional greenhouse gas Emissions in the UK (DARE-UK)
- Identifying Meteorological Inaccuracies in Air Quality Forecasts
- The Feeder Airstream - Investigating the mechanisms causing precipitation in cyclones.
Current Postdoctoral & graduate student supervision
- Dr Natalie Harvey is a PDRA. Natalie is working on ensemble volcanic ash source inversion techniques as part of the R4Ash project.
- Kaja Misczewska is a fourth year PhD student co-supervised by Dr Paul Agnew (Met Office) and Dr Marion Mittermaier (Met Office). Kaja's project is to improve the accuracy of air quality forecasts
- Sophie Cuckow is a first year PhD student co-supervised by Dr Oscar Martinez-Alvarado (Reading) and Dr Sam Smith (Met Office). Sophie's project is to investigate the processes leading to extreme rainfall in extratropical cyclones.
Other interests
Centaur Publications
2022
Perez, Gabriel M. P., Vidale, Pier Luigi, Dacre, Helen and García-Franco, Jorge L. (2022) Using a synoptic-scale mixing diagnostic to explain global precipitation variability from weekly to interannual time scales. Journal of Climate, 35 (24). pp. 4625-4643. ISSN 1520-0442 doi: https://doi.org/10.1175/jcli-d-22-0110.1
Harvey, Natalie J. ORCID: https://orcid.org/0000-0003-0973-5794, Western, Luke M., Dacre, Helen F. and Capponi, Antonio
(2022)
Can decision theory help end-users take the appropriate action in an emergency?
Bulletin of the American Meteorological Society, 103 (10).
E2176-E2187.
ISSN 1520-0477
doi: https://doi.org/10.1175/bams-d-21-0258.1
Harvey, Natalie J. ORCID: https://orcid.org/0000-0003-0973-5794, Dacre, Helen F., Saint, Cameron, Prata, Andrew T.
ORCID: https://orcid.org/0000-0001-9115-1143, Webster, Helen N.
ORCID: https://orcid.org/0000-0003-1749-1398 and Grainger, Roy G.
(2022)
Quantifying the impact of meteorological uncertainty on emission estimates and the risk to aviation using source inversion for the Raikoke 2019 eruption.
Atmospheric Chemistry and Physics, 22 (13).
pp. 8529-8545.
ISSN 1680-7316
doi: https://doi.org/10.5194/acp-22-8529-2022
Cuckow, Sophie, Dacre, Helen F. and Martinez-Alvarado, Oscar ORCID: https://orcid.org/0000-0002-5285-0379
(2022)
Moisture transport contributing to precipitation at the centre of storm Bronagh.
Weather, 77 (6).
pp. 196-201.
ISSN 0043-1656
doi: https://doi.org/10.1002/wea.4212
Capponi, Antonio, Harvey, Natalie J. ORCID: https://orcid.org/0000-0003-0973-5794, Dacre, Helen F., Beven, Keith, Saint, Cameron, Wells, Cathie and James, Mike R.
(2022)
Refining an ensemble of volcanic ash forecasts using satellite retrievals: Raikoke 2019.
Atmospheric Chemistry and Physics, 22 (9).
pp. 6115-6134.
ISSN 1680-7316
doi: https://doi.org/10.5194/acp-22-6115-2022
2021
Dacre, Helen F., Western, Luke M., Say, Daniel, O'Doherty, Simon, Arnold, Tim, Rennick, Chris and Hawkins, Ed ORCID: https://orcid.org/0000-0001-9477-3677
(2021)
Detectability of COVID-19 global emissions reductions in local CO2 concentration measurements.
Environmental Research Letters, 16 (9).
094043.
ISSN 1748-9326
doi: https://doi.org/10.1088/1748-9326/ac1eda
2020
Dacre, Helen and Pinto, Joaquim (2020) Serial clustering of extratropical cyclones: a review of where, when and why it occurs. npj Climate and Atmospheric Science, 3 (1). 48. ISSN 2397-3722 doi: https://doi.org/10.1038/s41612-020-00152-9
Dacre, Helen F, Mortimer, A Hugh and Neal, Lucy S (2020) How have surface NO2 concentrations changed as a result of the UK's COVID-19 travel restrictions? Environmental Research Letters, 15 (10). 104089. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/abb6a2
Harvey, Natalie J., Dacre, Helen F., Webster, Helen N., Taylor, Isabelle A., Khanal, Sujan, Grainger, Roy G. and Cooke, Michael C. (2020) The impact of ensemble meteorology on inverse modeling estimates of volcano emissions and ash dispersion forecasts: Grímsvötn 2011. Atmosphere, 11 (10). 1022. ISSN 2073-4433 doi: https://doi.org/10.3390/atmos11101022
Dacre, Helen, Bedwell, Peter, Hertwig, Denise, Leadbetter, Susan, loizou, Pinelopi and Webster, Helen (2020) Improved representation of particle size and solubility in model simulations of atmospheric dispersion and wet-deposition from Fukushima. Journal of Environmental Radioactivity, 217. 106193. ISSN 0265-931X doi: https://doi.org/10.1016/j.jenvrad.2020.106193
Priestley, Matthew D. K., Dacre, Helen F., Shaffrey, Len C. and Pinto, Joaquim G. (2020) The role of secondary cyclones and cyclone families for the North Atlantic storm track and clustering over western Europe. Quarterly Journal of the Royal Meteorological Society, 146 (728). pp. 1184-1205. ISSN 1477-870X doi: https://doi.org/10.1002/qj.3733
Dacre, Helen F., Josey, Simon A. and Grant, Alan L. M. (2020) Extratropical cyclone induced sea surface temperature anomalies in the 2013/14 winter. Weather and Climate Dynamics Discussions, 1 (1). pp. 27-44. ISSN 2698-4024 doi: https://doi.org/10.5194/wcd-1-27-2020
Dacre, H. F. (2020) A review of extratropical cyclones: observations and conceptual models over the past 100 years. Weather, 75 (1). pp. 4-7. ISSN 0043-1656 doi: https://doi.org/10.1002/wea.3653
Yano, J.-I., Ambaum, Maarten ORCID: https://orcid.org/0000-0002-6824-8083, Dacre, Helen and Manzato, A
(2020)
A dynamical–system description of precipitation over the tropics and the midlatitudes.
Tellus Series A: Dynamic Meteorology and Oceanography, 72 (1).
pp. 1-17.
ISSN 0280-6495
doi: https://doi.org/10.1080/16000870.2020.1847939
2019
Dacre, Helen F., Martinez-Alvarado, Oscar and Mbengue, Cheikh O. (2019) Linking atmospheric rivers and warm conveyor belt airflows. Journal of Hydrometeorology, 20 (6). pp. 1183-1196. ISSN 1525-7541 doi: https://doi.org/10.1175/JHM-D-18-0175.1
Mbengue, Cheikh Oumar, Woollings, Tim, Dacre, Helen F. and Hodges, Kevin I. (2019) The roles of static stability and tropical – extratropical interactions in the summer interannual variability of the North Atlantic sector. Climate Dynamics, 52 (3-4). pp. 1299-1315. ISSN 0930-7575 doi: https://doi.org/10.1007/s00382-018-4192-5
Prata, Andrew T., Dacre, Helen F., Irvine, Emma A., Mathieu, Eric, Shine, Keith P. and Clarkson, Rory J. (2019) Calculating and communicating ensemble-based volcanic ash dosage and concentration risk for aviation. Meteorological Applications, 26 (2). pp. 253-266. ISSN 1469-8080 doi: https://doi.org/10.1002/met.1759
Sinclair, V. A. and Dacre, H. F. (2019) Which extratropical cyclones contribute most to the transport of moisture in the southern hemisphere? JGR Atmospheres, 124 (5). pp. 2525-2545. ISSN 2169-8996 doi: https://doi.org/10.1029/2018JD028766
2018
Charlton-Perez, Andrew, Wolkowski, Sally, Brooke, Nina, Dacre, Helen, Davies, Paul, Harrison, Giles, Inness, Peter, Johnson, Doug, McCrum, Elizabeth and Milton, Sean, (2018) Meteorological training for the digital age: A Blueprint for a new curriculum. Report. University of Reading doi: https://doi.org/10.17864/1926.78851 (Unpublished)
Dacre, Helen F. and Harvey, Natalie J. (2018) Characterising the atmospheric conditions leading to large error growth in volcanic ash cloud forecasts. Journal of Applied Meteorology and Climatology, 57 (4). pp. 1011-1019. ISSN 1558-8432 doi: https://doi.org/10.1175/jamc-d-17-0298.1
Dacre, H. F., Crawford, B. R., Charlton-Perez, A. J., Lopez-Saldana, G., Griffiths, G. H. and Vicencio Veloso, J. (2018) Chilean wildfires: probabilistic prediction, emergency response and public communication. Bulletin of the American Meteorological Society. pp. 2259-2274. ISSN 1520-0477 doi: https://doi.org/10.1175/BAMS-D-17-0111.1
Harvey, Natalie J., Huntley, Nathan, Dacre, Helen F., Goldstein, Michael, Thomson, David and Webster, Helen (2018) Multi-level emulation of a volcanic ash transport and dispersion model to quantify sensitivity to uncertain parameters. Natural Hazards and Earth System Science, 18 (1). pp. 41-63. ISSN 1684-9981 doi: https://doi.org/10.5194/nhess-18-41-2018
Priestley, M. D. K., Dacre, Helen F., Shaffrey, Len C., Hodges, Kevin I. and Pinto, Joaquim G. (2018) The role of serial European windstorm clustering for extreme seasonal losses as determined from multi-centennial simulations of high resolution global climate model data. Natural Hazards and Earth System Science, 18. pp. 2991-3006. ISSN 1684-9981 doi: https://doi.org/10.5194/nhess-18-2991-2018
2017
Mulder, Kelsey J., Lickiss, Matthew, Harvey, Natalie, Black, Alison, Charlton-Perez, Andrew, Dacre, Helen and McCloy, Rachel (2017) Visualizing volcanic ash forecasts: scientist and stakeholder decisions using different graphical representations and conflicting forecasts. Weather, Climate and Society, 9 (3). pp. 333-348. ISSN 1948-8327 doi: https://doi.org/10.1175/WCAS-D-16-0062.1
Priestley, Matthew D. K., Pinto, Joaquim G., Dacre, Helen F. and Shaffrey, Len C. (2017) The role of cyclone clustering during the stormy winter of 2013/2014. Weather, 72 (7). pp. 187-192. ISSN 0043-1656 doi: https://doi.org/10.1002/wea.3025
Vanniere, Benoit, Czaja, Arnaud and Dacre, Helen (2017) Contribution of the cold sector of extratropical cyclones to mean state features in winter. Quarterly Journal of the Royal Meteorological Society, 143 (705). pp. 1990-2000. ISSN 1477-870X doi: https://doi.org/10.1002/qj.3058
Hawcroft, Matt, Dacre, Helen, Forbes, Richard, Hodges, Kevin, Shaffrey, Len and Stein, Thorwald (2017) Using satellite and reanalysis data to evaluate the representation of latent heating in extratropical cyclones in a climate model. Climate Dynamics, 48 (7). pp. 2255-2278. ISSN 0930-7575 doi: https://doi.org/10.1007/s00382-016-3204-6
Vannière, Benoît, Czaja, Arnaud, Dacre, Helen and Woollings, Tim (2017) A “cold path” for the Gulf Stream–troposphere connection. Journal of Climate, 30 (4). pp. 1363-1379. ISSN 1520-0442 doi: https://doi.org/10.1175/JCLI-D-15-0749.1
Priestley, Matthew D. K., Pinto, Joaquim G., Dacre, Helen F. and Shaffrey, Len C. (2017) Rossby wave breaking, the upper level jet, and serial clustering of extratropical cyclones in western Europe. Geophysical Research Letters, 44 (1). pp. 514-521. ISSN 0094-8276 doi: https://doi.org/10.1002/2016GL071277
Webber, Christopher P., Dacre, Helen F., Collins, William J. and Masato, Giacomo (2017) The dynamical impact of Rossby wave breaking upon UK PM10 concentration. Atmospheric Chemistry and Physics, 17 (2). pp. 867-881. ISSN 1680-7316 doi: https://doi.org/10.5194/acp-17-867-2017
2016
Hawcroft, Matthew K., Shaffrey, Len C., Hodges, Kevin I. and Dacre, Helen F. (2016) Can climate models represent the precipitation associated with extratropical cyclones? Climate Dynamics, 47 (3-4). pp. 679-695. ISSN 1432-0894 doi: https://doi.org/10.1007/s00382-015-2863-z
Dacre, Helen F., Harvey, Natalie J., Webley, Peter W. and Morton, Don (2016) How accurate are volcanic ash simulations of the 2010 Eyjafjallajökull eruption? Journal of Geophysical Research: Atmospheres, 121 (7). pp. 3534-3547. ISSN 2169-8996 doi: https://doi.org/10.1002/2015JD024265
Wilkins, K. L., Mackie, S., Watson, M., Webster, H. N., Thomson, D. J. and Dacre, Helen F. (2016) Data insertion in volcanic ash cloud forecasting. Annals of Geophysics, 57. ISSN 2037-416X doi: https://doi.org/10.4401/ag-6624 (Fast Track 2)
Harvey, Natalie and Dacre, Helen (2016) Spatial evaluation of volcanic ash forecasts using satellite observations. Atmospheric Chemistry and Physics, 16 (2). pp. 861-872. ISSN 1680-7316 doi: https://doi.org/10.5194/acp-16-861-2016
Wilkins, K. L., Watson, I. M., Kristiansen, N. I., Webster, H. N., Thomson, D. J., Dacre, Helen F. and Prata, A. J. (2016) Using data insertion with the NAME model to simulate the 8 May 2010 Eyjafjallajökull volcanic ash cloud. Journal of Geophysical Research: Atmospheres, 121 (1). pp. 306-323. ISSN 2169-8996 doi: https://doi.org/10.1002/2015JD023895
Vanniere, Benoit, Czaja, A., Dacre, Helen, Woollings, Tim and Parfitt, R. (2016) A potential vorticity signature for the cold sector of winter extratropical cyclones. Quarterly Journal of the Royal Meteorological Society, 142 (694). pp. 432-442. ISSN 1477-870X doi: https://doi.org/10.1002/qj.2662
2015
Masato, Giacomo, Bone, Angie, Charlton-Perez, Andrew, Cavany, Sean, Neal, Robert, Dankers, Rutger, Dacre, Helen, Carmichael, Katie and Murray, Virginia (2015) Improving the health forecasting alert system for cold weather and heat-waves in England: a proof-of-concept using temperature-mortality relationships. PLoS ONE, 10 (10). e0137804. ISSN 1932-6203 doi: https://doi.org/10.1371/journal.pone.0137804
Harvey, N.J., Hogan, R.J. and Dacre, H.F. (2015) Evaluation of boundary-layer type in a weather forecast model utilising long-term Doppler lidar observations. Quarterly Journal of the Royal Meteorological Society, 141 (689). pp. 1345-1353. ISSN 1477-870X doi: https://doi.org/10.1002/qj.2444 (Part B)
Dacre, Helen, Grant, Alan, Harvey, Natalie, Thomson, David, Webster, Helen and Marenco, Franco (2015) Volcanic ash layer depth: processes and mechanisms. Geophysical Research Letters, 42 (2). pp. 637-645. ISSN 0094-8276 doi: https://doi.org/10.1002/2014GL062454
2014
Pinto, Joaquim G., Gómara, Iñigo, Masato, Giacomo, Dacre, Helen F., Woollings, Tim and Caballero, Rodrigo (2014) Large-scale dynamics associated with clustering of extratropical cyclones affecting Western Europe. Journal of Geophysical Research: Atmospheres, 119 (24). 13,704-13,719. ISSN 2169-8996 doi: https://doi.org/10.1002/2014JD022305
Dacre, Helen F., Clark, Peter A., Martinez-Alvarado, Oscar, Stringer, Marc A. and Lavers, David A. (2014) How do atmospheric rivers form? Bulletin of the American Meteorological Society, 96 (8). pp. 1243-1255. ISSN 1520-0477 doi: https://doi.org/10.1175/BAMS-D-14-00031.1
Peake, D.L., Dacre, H.F., Methven, J. and Coceal, O. (2014) Meteorological factors controlling low-level continental pollutant outflow across a coast. Atmospheric Chemistry and Physics, 14 (7). pp. 10853-10890. ISSN 1680-7316 doi: https://doi.org/10.5194/acpd-14-10853-2014
2013
Dacre, Helen F. and Gray, Suzanne L. (2013) Quantifying the climatological relationship between extratropical cyclone intensity and atmospheric precursors. Geophysical Research Letters, 40 (10). pp. 2322-2327. ISSN 0094-8276 doi: https://doi.org/10.1002/grl.50105
Neu, Urs, Akperov, Mirseid G., Bellenbaum, Nina, Benestad, Rasmus, Blender, Richard, Caballero, Rodrigo, Cocozza, Angela, Dacre, Helen, Feng, Yang, Fraedrich, Klaus, Grieger, Jens, Gulev, Sergey, Hanley, John, Hewson, Tim, Inatsu, Masaru, Keay, Kevin, Kew, Sarah F., Kindem, Ina, Leckebusch, Gregor C., Liberato, Margarida L. R., Lionello, Piero, Mokhov, Igor I., Pinto, Joaquim G, Raible, Christoph C., Reale, Marco, Rudeva, Irina, Schuster, Mareike, Simmonds, Ian, Sinclair, Mark, Sprenger, Michael, Tilinina, Natalia D., Trigo, Isabel F., Ulbrich, Sven, Ulbrich, Uwe, Wang, Xiaolan L. and Wernli, Heini (2013) IMILAST: a community effort to intercompare extratropical cyclone detection and tracking algorithms. Bulletin of the American Meteorological Society, 94 (4). pp. 529-547. ISSN 0003-0007 doi: https://doi.org/10.1175/BAMS-D-11-00154.1
Dacre, Helen F, Grant, Alan L M and Johnson, B. T. (2013) Aircraft observations and model simulations of concentration and particle size distribution in the Eyjafjallajökull volcanic ash cloud. Atmospheric Chemistry and Physics, 13 (3). pp. 1277-1291. ISSN 1680-7316 doi: https://doi.org/10.5194/acp-13-1277-2013
Harvey, Natalie J., Hogan, Robin J. and Dacre, Helen F. (2013) A method to diagnose boundary-layer type using Doppler lidar. Quarterly Journal of the Royal Meteorological Society, 139 (676). pp. 1681-1693. ISSN 1477-870X doi: https://doi.org/10.1002/qj.2068
2012
Hawcroft, Matthew, Shaffrey, Len, Hodges, Kevin and Dacre, Helen (2012) How much Northern Hemisphere precipitation is associated with extratropical cyclones? Geophysical Research Letters, 39. ISSN 0094-8276
Dacre, H.F., Hawcroft, M.K., Stringer, M.A. and Hodges, K.I. (2012) An extratropical cyclone database: A tool for illustrating cyclone structure and evolution characteristics. Bulletin of the American Meteorological Society, 93. pp. 1497-1502. ISSN 1520-0477 doi: https://doi.org/10.1175/BAMS-D-11-00164.1
Devenish, B.J., Thomson, D.J., Marenco, F., Leadbetter, S.J., Ricketts, H. and Dacre, Helen (2012) A study of the arrival over the United Kingdom in April 2010 of the Eyjafjallajökull ash cloud using ground-based lidar and numerical simulations. Atmospheric Environment, 48. pp. 152-164. ISSN 1352-2310 doi: https://doi.org/10.1016/j.atmosenv.2011.06.033
Kristiansen, N.I., Stohl, A., Prata, F.J., Bukowiecki, N., Dacre, Helen, Eckhardt, S., Henne, S., Hort, B., Johnson, B.T., Marenco, F., Neininger, B., Reitebuch, O., Seibert, P., Thomson, D.J., Webster, H.N. and Weinzierl, B. (2012) Performance assessment of a volcanic ash transport model mini-ensemble used for inverse modeling of the 2010 Eyjafjallajökull eruption. Journal of Geophysical Research - Atmospheres, 117. D00U11. ISSN 0148-0227 doi: https://doi.org/10.1029/2011JD016844
Grant, Alan L M, Dacre, Helen F, Thomson, D. J. and Marenco, F. (2012) Horizontal and vertical structure of the Eyjafjallajökull ash cloud over the UK: a comparison of airborne lidar observations and simulations. Atmospheric Chemistry and Physics, 12. pp. 10145-10159. ISSN 1680-7316 doi: https://doi.org/10.5194/acp-12-10145-2012
2011
Dacre, H. F. (2011) A new method for evaluating regional air quality forecasts. Atmospheric Environment, 45 (4). pp. 993-1002. ISSN 1352-2310 doi: https://doi.org/10.1016/j.atmosenv.2010.10.048
Dacre, Helen F., Grant, Alan L. M., Hogan, Robin J., Belcher, Stephen E., Thomson, D. J., Devenish, B. J., Marenco, F., Hort, M. C., Haywood, J. M., Ansmann, A., Mattis, I. and Clarisse, L. (2011) Evaluating the structure and magnitude of the ash plume during the initial phase of the 2010 Eyjafjallajökull eruption using lidar observations and NAME simulations. Journal of Geophysical Research, 116. D00U03. ISSN 2156–2202 doi: https://doi.org/10.1029/2011JD015608
Charlton-Perez, Andrew and Dacre, Helen (2011) Lewis Fry Richardson's forecast factory - for real. Weather, 66 (2). pp. 52-54. ISSN 0043-1656 doi: https://doi.org/10.1002/wea.670
2010
Charlton-Perez, A., Dacre, H., Maskell, K., Reynolds, R., South, R. and Wood, C. (2010) Meteorology and climate inspire secondary school students. School Science Review, 92 (339). pp. 75-82. ISSN 0036-6811
Dacre, H. F. (2010) Evaluating the ability of a numerical weather prediction model to forecast tracer concentrations during ETEX 2. Atmospheric Environment, 44 (3). pp. 294-303. ISSN 1352-2310 doi: https://doi.org/10.1016/j.atmosenv.2009.10.039
2009
Davis, Lucy S. and Dacre, Helen F. (2009) Can dispersion model predictions be improved by increasing the temporal and spatial resolution of the meteorological input data? Weather, 64 (9). pp. 232-237. ISSN 0043-1656 doi: https://doi.org/10.1002/wea.421
Dacre, Helen Francis and Gray, Suzanne Louise (2009) The spatial distribution and evolution characteristics of North Atlantic cyclones. Monthly Weather Review, 137 (1). pp. 99-115. ISSN 0027-0644 doi: https://doi.org/10.1175/2008MWR2491.1
2008
Gray, Suzanne Louise and Dacre, Helen Francis (2008) The impact of deformation strain on the formation of banded clouds in idealized modeling experiments. Quarterly Journal of the Royal Meteorological Society, 134 (633). pp. 859-874. ISSN 1477-870X doi: https://doi.org/10.1002/qj.262
2007
Dacre, Helen Francis, Gray, Suzanne Louise and Belcher, Stephen Ernest (2007) A case study of boundary layer ventilation by convection and coastal processes. Journal of Geophysical Research, 112 (D17). D17106. ISSN 0148-0227 doi: https://doi.org/10.1029/2006JD007984
2006
Gray, Suzanne Louise and Dacre, Helen Francis (2006) Classifying dynamical forcing mechanisms using a climatology of extratropical cyclones. Quarterly Journal of the Royal Meteorological Society, 132 (617). pp. 1119-1137. ISSN 1477-870X doi: https://doi.org/10.1256/qj.05.69
Dacre, Helen Francis and Gray, Suzanne Louise (2006) Life-cycle simulations of shallow frontal waves and the impact of deformation strain. Quarterly Journal of the Royal Meteorological Society, 132 (620). pp. 2171-2190. ISSN 1477-870X doi: https://doi.org/10.1256/qj.05.238
Last update: 31st August 2023