Mervyn Freeman
Science Leader
Biography
I am Leader of the Space Weather and Atmosphere Team at the British Antarctic Survey.
In 2017, I was awarded the Chapman medal of the Royal Astronomical Society for investigations of outstanding merit in solar-terrestrial physics. My main research theme has been an holistic view of the coupled solar wind-magnetosphere-ionosphere system by the synthesis of experiment, data analysis and theory, including the development of new simple mathematical models to explain observations and resolve controversies, e.g., in ionospheric convection and substorms. I have published over 100 papers in peer-reviewed journals.
Since 2013, I have been the UK Research and Innovation (UKRI) Delegate to the European Incoherent Scatter (EISCAT) Council, responsible for the activities of the EISCAT Scientific Association. The Association is an international organisation that operates radars in Norway, Sweden, and Finland to investigate the upper atmosphere and ionosphere. Together with UK colleagues, Ian McCrea, Yulia Bogdanova, Steve Crothers (RAL Space), and Andrew Kavanagh (BAS), I oversee and support the UK’s scientific exploitation of EISCAT, including a £6M UK capital investment in the new EISCAT-3D radar, which is due to begin operations in 2022.
Career history
- Leader, Space Weather and Atmosphere Team, British Antarctic Survey, 2022-
- Promotion to UKRI Band G, 2024
- Honorary Professor, Mullard Space Science Laboratory, University College London, 2019-2024
- Chapman medal, Royal Astronomical Society, 2017
- Deputy Leader, Space Weather and Atmosphere Team, British Antarctic Survey, 2015-2022
- UK Research and Innovation (UKRI) Delegate to the European Incoherent Scatter (EISCAT) Council, 2013-
- Senior Space Weather Researcher, Radiation Belts and Atmospheric Chemistry Workpackage, British Antarctic Survey, 2013-2015
- Manager, Natural Complexity Workpackage, British Antarctic Survey, 2009-2013
- Principal Investigator, Halley SuperDARN radar, 2005-2016, and Falkland Islands SuperDARN radar, 2009-2011
- Principal Investigator, Natural Complexity Programme, British Antarctic Survey, 2005-2009
- Principal Investigator, BAS Low Power Magnetometer Network, 2000-
- Project leader, Magnetic Reconnection Project, British Antarctic Survey, 2000-2005
- Promotion to Band 4, British Antarctic Survey, 2000-
- Senior Scientific Officer, British Antarctic Survey, 1991-2000
- Research Assistant, Imperial College, London, UK, 1991
- Visiting Postdoctoral Fellow, Johns Hopkins University Applied Physics Laboratory, Maryland, USA, 1990-1991
- Research Assistant, Imperial College, London, UK, 1989
- PhD Space Physics, Imperial College, London, UK, 1986-1989
- BSc (Hons) Physics, Imperial College, London, UK, 1983-1986
Research interests
- Universal properties and theory of substorms at Earth and other planets.
- Multi-scale structure and turbulence of plasma convection and currents in Earth’s ionosphere.
- Modes of variability of the geomagnetic field.
- Space weather and its applications.
- Geoelectric circuit influences on climate.
- Cross-disciplinary applications of natural complexity.
Collaborations
European Incoherent Scatter (EISCAT) Scientific Association
NERC Space Weather Impact on Ground-based Systems (SWIGS) Highlight Topic grant 2017-2021 (including 10 UK institutes and universities)
STFC Rutherford Appleton Laboratory RAL Space group
Super Dual Auroral Radar Network (SuperDARN)
University College London Mullard Space Science Laboratory
Publications from NERC Open Research Archive
2024
Lao, C.J., Forsyth, C., Freeman, Mervyn ORCID record for Mervyn Freeman, Smith, A.W., Mooney, M.K.. (2024) On the Association of Substorm Identification Methods. JGR Space Physics, 129 (). 16 pp. 10.1029/2024JA032762
Parker, William E., Freeman, Mervyn ORCID record for Mervyn Freeman, Chisham, Gareth ORCID record for Gareth Chisham, Kavanagh, Andrew John ORCID record for Andrew John Kavanagh, Siew, Peng Mun, Rodriguez-Fernandez, Victor, Linares, Richard. (2024) Influences of Space Weather Forecasting Uncertainty on Satellite Conjunction Assessment. Space Weather, 22 (). 19 pp. 10.1029/2023SW003818
Chisham, G. ORCID record for G. Chisham, Freeman, M. P. ORCID record for M. P. Freeman. (2024) The spatial variation of large- and meso-scale plasma vorticity statistics in the high-latitude ionosphere and implications for ionospheric plasma flow models. Journal of Geophysical Research: Space Physics, 129 (). 21 pp. 10.1029/2024JA032887
Carter, J.A., Dunlop, M., Forsyth, C., Oksavik, K., Donovon, E., Kavanagh, A. ORCID record for A. Kavanagh, Milan, S.E., Sergienko, T., Fear, R.C., Sibeck, D.G., Connors, M., Yeoman, T., Tan, X., Taylor, M.G.G.T., McWilliams, K., Gjerloev, J., Barnes, R., Billet, D.D., Chisham, G. ORCID record for G. Chisham, Dimmock, A., Freeman, M.P. ORCID record for M.P. Freeman, Han, D.-S., Hartinger, M.D., Hsieh, S.-Y.W., Hu, Z.-J., James, M.K., Juusola, L., Kauristie, K., Kronberg, E.A., Lester, M., Manuel, J., Matzka, J., McCrea, I., Miyoshi, Y., Rae, J., Ren, L., Sigernes, F., Spanswick, E., Sterne, K., Steuwer, A., Sun, T., Walach, M.-T., Walsh, B., Wang, C., Weygand, J., Wild, J., Yan, J., Zhang, J., Zhang, Q.-H.. (2024) Ground-based and additional science support for SMILE. Earth and Planetary Physics, 8 (). 24 pp. 10.26464/epp2023055
2023
Coyle, S.E., Baker, J.B.H., Chakraborty, S., Hartinger, M. D., Freeman, M.P. ORCID record for M.P. Freeman, Clauer, C.R., Xu, Z., Weimer, D.R.. (2023) Substorms and Solar Eclipses: A Mutual Information Based Study. Geophysical Research Letters, 50 (). 7 pp. 10.1029/2023GL106432
Coxon, J.C., Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman, Forsyth, C., Walach, M-T., Murphy, K.R., Vines, S.K., Anderson, B.J., Smith, A.W., Fogg, A.R.. (2023) Extreme Birkeland Currents Are More Likely During Geomagnetic Storms on the Dayside of the Earth. Journal of Geophysical Research: Space Physics, 128 (). 16 pp. 10.1029/2023JA031946
Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman. (2023) Separating contributions to plasma vorticity in the high-latitude ionosphere from large-scale convection and meso-scale turbulence. Journal of Geophysical Research: Space Physics, 128 (). 13 pp. 10.1029/2023JA031885
Lam, M.M. ORCID record for M.M. Lam, Shore, R.M. ORCID record for R.M. Shore, Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman, Grocott, A., Walach, M.-T., Orr, L.. (2023) A Model of High Latitude Ionospheric Convection Derived From SuperDARN EOF Model Data. Space Weather, 21 (). 17 pp. 10.1029/2023SW003428
Coyle, S.E., Hartinger, M.D., Clauer, C.R., Baker, J.B.H., Cnossen, I. ORCID record for I. Cnossen, Freeman, M.P. ORCID record for M.P. Freeman, Weygand, J.M.. (2023) The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian. Journal of Geophysical Research: Space Physics, 128 (). 12 pp. 10.1029/2022JA031142
Maffei, Stefano, Eggington, Joseph W. B., Livermore, Philip W., Mound, Jonathan E., Sanchez, Sabrina, Eastwood, Jonathan P., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2023) Climatological predictions of the auroral zone locations driven by moderate and severe space weather events. Scientific Reports, 13 (). pp. 10.1038/s41598-022-25704-2
Orr, L., Grocott, A., Walach, M.‐T., Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman, Lam, M.M. ORCID record for M.M. Lam, Shore, R.M. ORCID record for R.M. Shore. (2023) A quantitative comparison of high latitude electric field models during a large geomagnetic storm. Space Weather, 21 (). 24 pp. 10.1029/2022SW003301
2022
Engebretson, Mark J., Simms, Laura E., Pilipenko, Viacheslav A., Bouayed, Lilia, Moldwin, Mark B., Weygand, James M., Hartinger, Michael D., Xu, Zhonghua, Clauer, C. Robert, Coyle, Shane, Willer, Anna N., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Gerrard, Andy J.. (2022) Geomagnetic disturbances that cause GICs: investigating their interhemispheric conjugacy and control by IMF orientation.. Journal of Geophysical Research: Space Physics, 127 (). 23 pp. 10.1029/2022JA030580
Smith, A.W., Rodger, C.J., Manus, D.H. Mac, Forsyth, C., Rae, I.J., Freeman, M.P. ORCID record for M.P. Freeman, Clilverd, M.A. ORCID record for M.A. Clilverd, Petersen, T., Dalzell, M.. (2022) The correspondence between sudden commencements and geomagnetically induced currents: Insights from New Zealand. Space Weather, 20 (). 18 pp. 10.1029/2021SW002983
Daggitt, Thomas A. ORCID record for Thomas A. Daggitt, Horne, Richard B. ORCID record for Richard B. Horne, Glauert, Sarah A. ORCID record for Sarah A. Glauert, Del Zanna, Giulio, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2022) Variations in Observations of Geosynchronous Magnetopause and Last Closed Drift Shell Crossings with Magnetic Local Time. Space Weather, 20 (). 13 pp. 10.1029/2022SW003105
Coxon, John C., Chisham, Gareth ORCID record for Gareth Chisham, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Anderson, Brian J., Fear, Robert C.. (2022) Distributions of Birkeland current density observed by AMPERE are heavy‐tailed or long‐tailed. Journal of Geophysical Research: Space Physics, 127 (). 20 pp. 10.1029/2021JA029801
2021
Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman. (2021) A statistical model of vorticity in the polar ionosphere and implications for extreme values. Journal of Geophysical Research: Space Physics, 126 (). 16 pp. 10.1029/2021JA029307
Bentley, Mike, Siegert, Martin, Jones, Anna ORCID record for Anna Jones, Meredith, Michael ORCID record for Michael Meredith, Hendry, Katharine, Arthur, Jennifer, Brooks, Ian, Convey, Peter ORCID record for Peter Convey, Dodds, Klaus, Freeman, Mervyn ORCID record for Mervyn Freeman, Hughes, Kevin A. ORCID record for Kevin A. Hughes, Johnston, Nadine M. ORCID record for Nadine M. Johnston, Marschalek, Jim, Nichols, Keir, Plaschkes, Charlotte, Rhodes, Rachael, Taylor, Michelle L.. (2021) The future of UK Antarctic science: Strategic priorities, essential needs and opportunities for international leadership. Imperial College London, The Grantham Institute, 10 pp. (Grantham Institute Discussion Paper 9.) 10.25561/92181
Desai, R.T., Freeman, M.P. ORCID record for M.P. Freeman, Eastwood, J.P., Eggington, J.W.B., Archer, M.O., Shprits, Y.Y., Meredith, N.P. ORCID record for N.P. Meredith, Staples, F.A., Rae, I.J., Hietala, H., Mejnertsen, L., Chittenden, J.P., Horne, R.B. ORCID record for R.B. Horne. (2021) Interplanetary shock‐induced magnetopause motion: Comparison between theory and global magnetohydrodynamic simulations. Geophysical Research Letters, 48 (). 11 pp. 10.1029/2021GL092554
Shore, R.M. ORCID record for R.M. Shore, Freeman, M.P. ORCID record for M.P. Freeman, Chisham, G. ORCID record for G. Chisham. (2021) Data‐driven basis functions for SuperDARN ionospheric plasma flow characterisation and prediction. Journal of Geophysical Research: Space Physics, 126 (). 18 pp. 10.1029/2021JA029272
Smith, A.W., Forsyth, C., Rae, I.J., Rodger, C.J., Freeman, M.P. ORCID record for M.P. Freeman. (2021) The impact of sudden commencements on ground magnetic field variability: Immediate and delayed consequences. Space Weather, 19 (). 17 pp. 10.1029/2021SW002764
Dimmock, A.P., Welling, D.T., Rosenqvist, L., Forsyth, C., Freeman, M.P. ORCID record for M.P. Freeman, Rae, I.J., Viljanen, A., Vandegriff, E., Boynton, R.J., Balikhin, M.A., Yordanova, E.. (2021) Modeling the geomagnetic response to the September 2017 space weather event over Fennoscandia using the Space Weather Modeling Framework: Studying the impacts of spatial resolution. Space Weather, 19 (). 25 pp. 10.1029/2020SW002683
Clilverd, Mark ORCID record for Mark Clilverd, Rodger, Craig J., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Brundell, James B., Mac Manus, Daniel H., Dalzell, Michael, Clarke, Ellen, Thomson, Alan W.P., Richardson, Gemma S., MacLeod, Finlay, Frame, Ian. (2021) Geomagnetically induced currents during the 07-08 September 2017 disturbed period: a global perspective. Journal of Space Weather and Space Climate, 11 (). 15 pp. 10.1051/swsc/2021014
2020
Smith, A.W., Rae, I.J., Forsyth, C., Oliveira, D.M., Freeman, M.P. ORCID record for M.P. Freeman, Jackson, D.R.. (2020) Probabilistic forecasts of storm sudden commencements from interplanetary shocks using machine learning. Space Weather, 18 (). 24 pp. 10.1029/2020SW002603
Engebretson, Mark J., Kirkevold, Kathryn R., Steinmetz, Erik S., Pilipenko, Viacheslav A., Moldwin, Mark B., McCuen, Brett A., Clauer, C. R., Hartinger, Michael D., Coyle, Shane, Opgenoorth, Hermann, Schillings, Audrey, Willer, Anna N., Edwards, Thom R., Boteler, David H., Gerrard, Andy J., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Rose, Michael C.. (2020) Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs. Journal of Geophysical Research: Space Physics, 125 (). 24 pp. 10.1029/2020JA028128
2019
Smith, A.W., Freeman, M.P. ORCID record for M.P. Freeman, Rae, I.J., Forsyth, C.. (2019) The influence of sudden commencements on the rate of change of the surface horizontal magnetic field in the United Kingdom. Space Weather, 17 (). pp. 10.1029/2019SW002281
Freeman, Mervyn ORCID record for Mervyn Freeman, Lam, Mai Mai. (2019) Regional, seasonal, and inter-annual variations of Antarctic and sub-Antarctic temperature anomalies related to the Mansurov effect. Environmental Research Communications, 11 (). pp. 10.1088/2515-7620/ab4a84
Sandhu, J.K., Rae, I.J., Freeman, M.P. ORCID record for M.P. Freeman, Gkioulidou, M., Forsyth, C., Reeves, G.D., Murphy, K.R., Walach, M.-T.. (2019) Substorm ‐ Ring Current Coupling: A comparison of isolated and compound substorms. Journal of Geophysical Research: Space Physics, 124 (). pp. 10.1029/2019JA026766
Coxon, John C., Shore, Robert M. ORCID record for Robert M. Shore, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Fear, Robert C., Browett, Stephen D., Smith, Andrew W., Whiter, Daniel K., Anderson, Brian J.. (2019) Timescales of Birkeland Currents driven by the IMF. Geophysical Research Letters, 46 (). pp. 10.1029/2018GL081658
Shore, R.M. ORCID record for R.M. Shore, Freeman, M.P. ORCID record for M.P. Freeman, Coxon, J.C., Thomas, E.G., Gjerloev, J.W., Olsen, N.. (2019) Spatial variation in the responses of the surface external and induced magnetic field to the solar wind. Journal of Geophysical Research: Space Physics, 124 (). pp. 10.1029/2019JA026543
Shore, Robert ORCID record for Robert Shore, Freeman, Mervyn ORCID record for Mervyn Freeman, Gjerloev, Jesper. (2019) Interplanetary magnetic field control of polar ionospheric equivalent current system modes. Space Weather, 17 (). pp. 10.1029/2019SW002161
Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Forsyth, Colin, Rae, I. Jonathan. (2019) The influence of substorms on extreme rates of change of the surface horizontal magnetic field in the United Kingdom. Space Weather, 17 (). pp. 10.1029/2018SW002148
Lam, Mai Mai ORCID record for Mai Mai Lam, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Jackman, C.M., Rae, I.J., Kalmoni, N.M.E., Sandhu, J.K., Forsyth, C.. (2019) How well can we estimate Pedersen conductance from the THEMIS white-light all-sky cameras?. Journal of Geophysical Research: Space Physics, 124 (). pp. 10.1029/2018JA026067
Lockwood, Mike, Bentley, Sarah N., Owens, Mathew J., Barnard, Luke A., Scott, Chris J., Watt, Clare E., Allanson, Oliver, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2019) The development of a space climatology: 2. The distribution of power input into the magnetosphere on a 3‐hourly timescale. Space Weather, 17 (). pp. 10.1029/2018SW002016
Lockwood, Mike, Bentley, Sarah N., Owens, Mathew J., Barnard, Luke A., Scott, Chris J., Watt, Clare E., Allanson, Oliver, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2019) The development of a space climatology: 3. Models of the evolution of distributions of space weather variables with timescale. Space Weather, 17 (). pp. 10.1029/2018SW002017
2018
Lam, Mai Mai ORCID record for Mai Mai Lam, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Chisham, Gareth ORCID record for Gareth Chisham. (2018) IMF-driven change to the Antarctic tropospheric temperature due to the global atmospheric electric circuit. Journal of Atmospheric and Solar-Terrestrial Research, 180 (). pp. 10.1016/j.jastp.2017.08.027
Sandhu, J.K., Rae, I.J., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Forsyth, C., Gkioulidou, M., Reeves, G.D., Spence, H.E., Jackman, C.M., Lam, M.M.. (2018) Energization of the ring current by substorms. Journal of Geophysical Research: Space Physics, 123 (). pp. 10.1029/2018JA025766
Coxon, John C., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Jackman, Caitriona M., Forsyth, Colin, Rae, I. Jonathan, Fear, Robert C.. (2018) Tailward propagation of magnetic energy density variations With respect to substorm onset times. Journal of Geophysical Research: Space Physics, 123 (). pp. 10.1029/2017JA025147
Forsyth, C., Shortt, M., Coxon, J.C., Rae, I.J., Freeman, M.. ORCID record for M.. Freeman, Kalmoni, N.M.E., Jackman, C.M., Anderson, B.J., Milan, S.E., Burrell, A.G.. (2018) Seasonal and temporal variations of field-aligned currents and ground magnetic deflections during substorms. Journal of Geophysical Research: Space Physics, 123 (). pp. 10.1002/2017JA025136
Shore, R.M. ORCID record for R.M. Shore, Freeman, M.P. ORCID record for M.P. Freeman, Gjerloev, J.W.. (2018) An empirical orthogonal function reanalysis of the northern polar external and induced magnetic field during solar cycle 23. Journal of Geophysical Research, 123 (). pp. 10.1002/2017JA024420
2017
Shore, R.M. ORCID record for R.M. Shore, Freeman, M.P. ORCID record for M.P. Freeman, Wild, J.A., Gjerloev, J.W.. (2017) A high-resolution model of the external and induced magnetic field at the Earth’s surface in the northern hemisphere. Journal of Geophysical Research: Space Physics, 122 (). pp. 10.1002/2016JA023682
2016
Forsyth, C., Rae, I. J., Murphy, K. R., Freeman, M. P. ORCID record for M. P. Freeman, Huang, C.-L., Spence, H. E., Boyd, A. J., Coxon, J. C., Jackman, C. M., Kalmoni, N. M. E., Watt, C. E. J.. (2016) What effect do substorms have on the content of the radiation belts?. Journal of Geophysical Research: Space Physics, 121 (). pp. doi:10.1002/2016JA022620
Coxon, J. C., Jackman, C. M., Freeman, M. P. ORCID record for M. P. Freeman, Forsyth, C., Rae, I. J.. (2016) Identifying the magnetotail lobes with Cluster magnetometer data. Journal of Geophysical Research: Space Physics, 121 (). pp. doi:10.1002/2015JA022020
2015
Forsyth, C., Rae, I. J., Coxon, J. C., Freeman, M. P. ORCID record for M. P. Freeman, Jackman, C. M., Gjerloev, J., Fazakerley, A. N.. (2015) A new technique for determining Substorm Onsets and Phases from Indices of the Electrojet (SOPHIE). Journal of Geophysical Research: Space Physics, 120 (). pp. doi:10.1002/2015JA021343
2014
Forsyth, C., Watt, C.E.J., Rae, I.J., Fazakerley, A.N., Kalmoni, N.M.E., Freeman, M.P. ORCID record for M.P. Freeman, Boakes, P.D., Nakamura, R., Dandouras, I., Kistler, L.M., Jackman, C.M., Coxon, J.C., Carr, C.. (2014) Increases in plasma sheet temperature with solar wind driving during substorm growth phases. Geophysical Research Letters, 41 (). pp. doi:10.1002/2014GL062400
Longden, N., Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman. (2014) Magnetic local time variation and scaling of poleward auroral boundary dynamics. Journal of Geophysical Research: Space Physics, 119 (). pp. 10.1002/2014JA020430
Lam, Mai Mai ORCID record for Mai Mai Lam, Chisham, Gareth ORCID record for Gareth Chisham, Freeman, Mervyn ORCID record for Mervyn Freeman. (2014) Solar-wind-driven geopotential height anomalies originate in the Antarctic lower troposphere. Geophysical Research Letters, 41 (). pp. 10.1002/2014GL061421
Jackman, C. M., Arridge, C. S., André, N., Bagenal, F., Birn, J., Freeman, M. P. ORCID record for M. P. Freeman, Jia, X., Kidder, A., Milan, S. E., Radioti, A., Slavin, J. A., Vogt, M. F., Volwerk, M., Walsh, A. P.. (2014) Large-scale structure and dynamics of the magnetotails of Mercury, Earth, Jupiter and Saturn. Space Science Reviews, 182 (). pp. doi:10.1007/s11214-014-0060-8
Jackman, C.M., Slavin, J. A, Kivelson, M.G., Southwood, D. J., Achilleos, N., Thomsen, M.F., DiBraccio, G. A., Eastwood, J.P., Freeman, M.P. ORCID record for M.P. Freeman, Dougherty, M.K., Vogt, M.F.. (2014) Saturn’s dynamic magnetotail: A comprehensive magnetic field and plasma survey of plasmoids and travelling compression regions, and their role in global magnetospheric dynamics. Journal of Geophysical Research: Space Physics, 119 (). pp. doi:10.1002/2013JA019388
2013
Lam, Mai Mai ORCID record for Mai Mai Lam, Chisham, Gareth ORCID record for Gareth Chisham, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2013) The interplanetary magnetic field influences mid-latitude surface atmospheric pressure. Environmental Research Letters, 8 (). pp. 10.1088/1748-9326/8/4/045001
Milan, S. E., Grocott, A., de Larquier, S., Lester, M., Yeoman, T. K., Freeman, M. P. ORCID record for M. P. Freeman, Chisham, G. ORCID record for G. Chisham. (2013) Traveling ionospheric disturbances in the Weddell Sea Anomaly associated with geomagnetic activity. Journal of Geophysical Research: Space Physics, 118 (). pp. doi:10.1002/jgra.50566
Chisham, Gareth ORCID record for Gareth Chisham, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2013) A reassessment of SuperDARN meteor echoes from the upper mesosphere and lower thermosphere. Journal of Atmospheric and Solar-Terrestrial Physics, 102 (). pp. 10.1016/j.jastp.2013.05.018
Grocott, A., Hosokawa, K., Ishida, T., Lester, M., Milan, S. E., Freeman, M. P. ORCID record for M. P. Freeman, Sato, N., Yukimatu, A. S.. (2013) Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar. Journal of Geophysical Research: Space Physics, 118 (). pp. doi:10.1002/jgra.50515
Capparelli, V., Franzke, C., Vecchio, A., Freeman, M.P. ORCID record for M.P. Freeman, Watkins, N.W., Carbone, V.. (2013) A spatiotemporal analysis of U.S. station temperature trends over the last century. Journal of Geophysical Research: Atmospheres, 118 (). pp. 10.1002/jgrd.50551
Moffat-Griffin, Tracy ORCID record for Tracy Moffat-Griffin, Lester, Mark, Freeman, Mervyn ORCID record for Mervyn Freeman. (2013) From atmosphere to space: a new scientific frontier. Astronomy & Geophysics, 54 (). pp. doi:10.1093/astrogeo/att079
2012
Kunduri, B.S.R., Baker, J.B.H., Ruohoniemi, J. M., Clausen, L.B.N., Grocott, A., Thomas, E.G., Freeman, M.P. ORCID record for M.P. Freeman, Talaat, E.R.. (2012) An examination of inter-hemispheric conjugacy in a subauroral polarization stream. Journal of Geophysical Research, 117 (). 17 pp. 10.1029/2012JA017784
Edwards, Andrew M., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Breed, Greg A., Jonsen, Ian D.. (2012) Incorrect likelihood methods were used to infer scaling laws of marine predator search behaviour. Plos One, 7 (). 13 pp. 10.1371/journal.pone.0045174
2011
Grocott, A., Milan, S.E., Baker, J.B.H., Freeman, M.P. ORCID record for M.P. Freeman, Lester, M., Yeoman, T.K.. (2011) Dynamic subauroral ionospheric electric fields observed by the Falkland Islands radar during the course of a geomagnetic storm. Journal of Geophysical Research, 116 (). 16 pp. 10.1029/2011JA016763
Boakes, P.D., Milan, S.E., Abel, G.A., Freeman, M.P. ORCID record for M.P. Freeman, Chisham, G. ORCID record for G. Chisham, Hubert, B.. (2011) A superposed epoch investigation of the relation between magnetospheric solar wind driving and substorm dynamics with geosynchronous particle injection signatures. Journal of Geophysical Research, 116 (). 12 pp. 10.1029/2010JA016007
Hibbins, Robert ORCID record for Robert Hibbins, Freeman, Mervyn ORCID record for Mervyn Freeman, Milan, S.E., Ruohoiemi, J.M.. (2011) Winds and tides in the mid-latitude Southern Hemisphere upper mesosphere recorded with the Falkland Islands SuperDARN radar. Annales Geophysicae, 29 (). pp. 10.5194/angeo-29-1985-2011
2010
Longden, Nicola, Chisham, Gareth ORCID record for Gareth Chisham, Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Abel, Gary A., Sotirelis, Tom. (2010) Estimating the location of the open-closed magnetic field line boundary from auroral images. Annales Geophysicae, 28 (). pp. 10.5194/angeo-28-1659-2010
Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman. (2010) On the non-Gaussian nature of ionospheric vorticity. Geophysical Research Letters, 37 (). 5 pp. doi:10.1029/2010GL043714
Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Watkins, Nicholas W., Yoneki, Eiko, Crowcroft, Jon. (2010) Rhythm and randomness in human contact. 2010 International Conference on Advances in Social Networks Analysis and Mining, (). pp. 10.1109/ASONAM.2010.57
2009
Chisham, G. ORCID record for G. Chisham, Freeman, M.P. ORCID record for M.P. Freeman, Abel, G.A., Bristow, W.A., Marchaudon, A., Ruohoniemi, J.M., Sofko, G.J.. (2009) Spatial distribution of average vorticity in the high-latitude ionosphere and its variation with interplanetary magnetic field direction and season. Journal of Geophysical Research, 114 (). 14 pp. doi:10.1029/2009JA014263
Boakes, P.D., Milan, S.E., Abel, G.A., Freeman, M.P. ORCID record for M.P. Freeman, Chisham, G. ORCID record for G. Chisham, Hubert, B.. (2009) A statistical study of the open magnetic flux content of the magnetosphere at the time of substorm onset. Geophysical Research Letters, 36 (). 5 pp. doi:10.1029/2008GL037059
Jackman, C.M., Lamy, L., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Zarka, P., Cecconi, B., Kurth, W.S., Cowley, S.W.H., Dougherty, M.K.. (2009) On the character and distribution of lower-frequency radio emissions at Saturn and their relationship to substorm-like events. Journal of Geophysical Research, 114 (). 13 pp. 10.1029/2008JA013997
Abel, G.A., Freeman, M.P. ORCID record for M.P. Freeman, Chisham, G. ORCID record for G. Chisham. (2009) IMF clock angle control of multifractality in ionospheric velocity fluctuations. Geophysical Research Letters, 36 (). 5 pp. 10.1029/2009GL040336
Morley, S.K., Rouillard, A.P., Freeman, Mervyn P. ORCID record for Mervyn P. Freeman. (2009) Recurrent substorm activity during the passage of a corotating interaction region. Journal of Atmospheric and Solar-Terrestrial Physics, 71 (). pp. 10.1016/j.jastp.2008.11.009
Freeman, Mervyn P. ORCID record for Mervyn P. Freeman, Morley, S. K.. (2009) No evidence for externally triggered substorms based on superposed epoch analysis of IMF Bz. Geophysical Research Letters, 36 (). 4 pp. 10.1029/2009GL040621
- PRESCIENT
- SWIGS
- Joule Heating
- Space Weather Observatory
- THeMES
- SuperDARN
- The Global Electric Circuit
- LPM Network
- EISCAT Science Support
- A High-Order Model of the Earth’s External and Induced Magnetic Field
- SWIMMR-T
- No evidence for externally triggered substorms based on superposed epoch analysis of IMF Bz
2022
Climate change to increase lifetime of space pollution
News 18 October, 2022
2021
Antarctica experiences rare total solar eclipse
News 3 December, 2021
2020
Space weather monitoring receives funding boost
News 27 June, 2020
2017
Royal Astronomical Society honours BAS scientist
News 13 January, 2017
2015
Magnetometers
Facility
Halley radars
Facility
- UKRI Delegate, EISCAT Council
- Principal Investigator of BAS low power magnetometer network, SuperMAG Executive Committee
- Member, NERC Radar Advisory Group