Dr Adrian Grocott

Senior Lecturer

Research Interests

Coupling of the solar wind with the Earth's magnetosphere, and the impact of this interaction on the upper atmosphere, through processes collectively referred to as 'Space Weather'.

Magnetospheric substorms: a phenomenon involving the storage and explosive release of solar wind energy in the magnetosphere, resulting in the visible aurora and enhanced atmospheric electrical current systems.

Electrodynamics of the mid-latitude ionosphere, that is typically magnetically conjugate to the inner magnetosphere and radiation belts.

Geomagnetic storms, where the auroral zone expands equatorwards to more inhabited latitudes where the effects of Space Weather are more readily apparent.

AuroraWatch UK: an automated aurora alert service
Case, N.A., Marple, S.R., Honary, F., Wild, J.A., Billett, D., Grocott, A. 8/12/2017 In: Earth and Space Science. 9 p.
Journal article

Nightside ionospheric convection asymmetries during the early substorm expansion phase: relationship to onset local time
Grocott, A., Laurens, H., Wild, J.A. 5/12/2017 In: Geophysical Research Letters. 10 p.
Letter

Time-dependence of dawn-dusk asymmetries in the terrestrial ionospheric convection pattern
Grocott, A. 6/10/2017 In: Dawn-Dusk Asymmetry in Planetary Plasma Environments. American Geophysical Union
Chapter (peer-reviewed)

Comparative study of large-scale auroral signatures of substorms, steady magnetospheric convection events, and sawtooth events
Walach, M., Milan, S.E., Murphy, K.R., Carter, J.A., Hubert, B.A., Grocott, A. 27/06/2017 In: Journal of Geophysical Research: Space Physics. 122, 6, p. 6357-6373. 17 p.
Journal article

Neutral wind contributions to ionospheric Joule heating at high latitudes
Billett, D., Wild, J.A., Grocott, A. 6/06/2017
Abstract

An isolated, bright cusp aurora at Saturn
Kinrade, J., Badman, S.V., Bunce, E.J., Tao, C., Provan, G., Cowley, S.W.H., Grocott, A., Gray, R., Grodent, D.C., Kimura, T., Nichols, J.D., Arridge, C.S., Radioti, A., Clarke, J.T., Crary, F.J., Pryor, W.R., Melin, H., Baines, K.H., Dougherty, M.K. 06/2017 In: Journal of Geophysical Research: Space Physics. 122, 6, p. 6121-6138. 18 p.
Journal article

An analysis of magnetic reconnection events and their associated auroral enhancements
Case, N.A., Grocott, A., Milan, S., Nagai, T., Reistad, J.P. 3/03/2017 In: Journal of Geophysical Research: Space Physics. 122, 3, p. 2922-2935. 14 p.
Journal article

Timescales for the penetration of IMF By into the Earth’s magnetotail
Browett, S., Fear, R., Grocott, A., Milan, S.E. 01/2017 In: Journal of Geophysical Research: Space Physics. 122, 1, p. 579-593. 15 p.
Journal article

Dynamic effects of restoring footpoint symmetry on closed magnetic field lines
Reistad, J.P., Østgaard, N., Tenfjord, P., Laundal, K.M., Snekvik, K., Haaland, S., Milan, S.E., Oksavik, K., Frey, H.U., Grocott, A. 1/05/2016 In: Journal of Geophysical Research: Space Physics. 121, 5, p. 3963-3977. 15 p.
Journal article

An interpretation of spacecraft and ground based observations of multiple omega band events
Weygand, J.M., Kivelson, M.G., Frey, H.U., Rodriguez, J.V., Angelopoulos, V., Redmon, R., Barker-Ream, J., Grocott, A., Amm, O. 10/2015 In: Journal of Atmospheric and Solar-Terrestrial Physics. 133, p. 185-204. 20 p.
Journal article

The influence of IMF clock angle timescales on the morphology of ionospheric convection
Grocott, A., Milan, S.E. 21/07/2014 In: Journal of Geophysical Research: Space Physics. 119, 7, p. 5861-5876. 16 p.
Journal article

Thermospheric density perturbations in response to substorms
Clausen, L.B.N., Milan, S.E., Grocott, A. 11/06/2014 In: Journal of Geophysical Research: Space Physics. 119, 6, p. 4441-4455. 15 p.
Journal article

Dynamic auroral storms on Saturn as observed by the Hubble Space Telescope
Nichols, J.D., Badman, S.V., Baines, K.H., Brown, R.H., Bunce, E.J., Clarke, J.T., Cowley, S.W.H., Crary, F.J., Dougherty, M.K., Gerard, J., Grocott, A., Grodent, D., Kurth, W., Melin, H., Mitchell, D., Pryor, W.R., Stallard, T.S. 28/05/2014 In: Geophysical Research Letters. 41, 10, 8 p.
Letter

Interplanetary magnetic field control of the ionospheric field-aligned current and convection distributions
Juusola, L., Milan, S.E., Lester, M., Grocott, A., Imber, S.M. 16/04/2014 In: Journal of Geophysical Research: Space Physics. 119, 4, p. 3130–3149. 20 p.
Journal article

Traveling ionospheric disturbances in the Weddell Sea Anomaly associated with geomagnetic activity
Milan, S.E., Grocott, A., De Larquier, S., Lester, M., Yeoman, T.K., Freeman, M.P., Chisham, G. 10/2013 In: Journal of Geophysical Research: Space Physics. 118, 10, p. 6608-6617. 10 p.
Journal article

Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar
Grocott, A., Hosokawa, K., Ishida, T., Lester, M., Milan, S.E., Freeman, M.P., Sato, N., Yukimatu, A.S. 09/2013 In: Journal of Geophysical Research. 118, 9, p. 5830–5841. 12 p.
Journal article

On the performance of global magnetohydrodynamic models in the Earth's magnetosphere
Honkonen, I., Rastätter, L., Grocott, A., Pulkkinen, A., Palmroth, M., Raeder, J., Ridley, A.J., Wiltberger, M. 05/2013 In: Space Weather. 11, 5, p. 313-326. 14 p.
Journal article

An examination of inter-hemispheric conjugacy in a subauroral polarization stream
Kunduri, B.S.R., Baker, J.B.H., Ruohoniemi, J.M., Clausen, L.B.N., Grocott, A., Thomas, E.G., Freeman, M.P., Talaat, E.R. 28/08/2012 In: Journal of Geophysical Research. 117, A8, 17 p.
Journal article

Comparison between SuperDARN flow vectors and equivalent ionospheric currents from ground magnetometer arrays
Weygand, J.M., Amm, O., Angelopoulos, V., Milan, S.E., Grocott, A., Gleisner, H., Stolle, C. 25/05/2012 In: Journal of Geophysical Research. 117, A5, 9 p.
Journal article

A quantitative deconstruction of the morphology of high-latitude ionospheric convection
Grocott, A., Milan, S.E., Imber, S.M., Lester, M., Yeoman, T.K. 17/05/2012 In: Journal of Geophysical Research. 117, A5, 16 p.
Journal article

Cassini VIMS observations of latitudinal and hemispheric variations in Saturn’s infrared auroral intensity
Badman, S.V., Tao, C., Grocott, A., Kasahara, S., Melin, H., Brown, R.H., Baines, K.H., Fujimoto, M., Stallard, T. 1/12/2011 In: Icarus. 216, 2, p. 367-375. 9 p.
Journal article

Dynamic subauroral ionospheric electric fields observed by the Falkland Islands radar during the course of a geomagnetic storm
Grocott, A., Milan, S.E., Baker, J.B.H., Freeman, M.P., Lester, M., Yeoman, T.K. 11/2011 In: Journal of Geophysical Research. 116, A11, 16 p.
Journal article

A new way to study geomagnetic storms
Hutchinson, J.A., Wright, D.M., Milan, S.E., Grocott, A., Boakes, P.D. 1/08/2011 In: Astronomy and Geophysics. 52, 4, p. 4.20-4.23. 4 p.
Journal article

Midnight sector observations of auroral omega bands
Wild, J., Woodfield, E., Donovan, E., Fear, R., Grocott, A., Lester, M., Fazakerley, A., Lucek, E., Khotyaintsev, Y., Andre, M., Kadokura, A., Hosokawa, K., Carlson, C., McFadden, J., Glassmeier, K., Angelopoulos, V., Björnsson, G. 18/03/2011 In: Journal of Geophysical Research. 116, A00I30, 20 p.
Journal article

A superposed epoch analysis of auroral evolution during substorms: local time of onset region
Milan, S.E., Grocott, A., Hubert, B. 14/10/2010 In: Journal of Geophysical Research. 115, A5, 9 p.
Journal article

Merging of magnetic islands as an efficient accelerator of electrons
Tanaka, K.G., Yumura, T., Fujimoto, M., Shinohara, I., Badman, S.V., Grocott, A. 7/10/2010 In: Physics of Plasmas. 17, 10, 11 p.
Journal article

Variation of Saturn's UV aurora with SKR phase
Nichols, J.D., Cecconi, B., Clarke, J.T., Cowley, S.W.H., Gérard, J., Grocott, A., Grodent, D., Lamy, L., Zarka, P. 6/08/2010 In: Geophysical Research Letters. 37, 15, 5 p.
Journal article

South-north asymmetry of field-aligned currents in the magnetotail observed by Cluster
Shi, J.K., Cheng, Z.W., Zhang, T.L., Dunlop, M., Liu, Z.X., Torkar, K., Fazakerley, A., Lucek, E., Rème, H., Dandouras, I., Lui, A.T.Y., Pu, Z.Y., Walsh, A.P., Volwerk, M., Lahiff, A.D., Taylor, M.G.G.T., Grocott, A., Kistler, L.M., Lester, M., Mouikis, C., Shen, C. 29/07/2010 In: Journal of Geophysical Research. 115, A7, 10 p.
Journal article

Superposed epoch analysis of the ionospheric convection evolution during substorms: IMF BY dependence
Grocott, A., Milan, S., Yeoman, T., Sato, N., Yukimatu, A., Wild, J. 05/2010 In: Journal of Geophysical Research. 115, A5, 13 p.
Journal article

Local determination of ionospheric plasma convection from coherent scatter radar data using the SECS technique
Amm, O., Grocott, A., Lester, M., Yeoman, T.K. 12/03/2010 In: Journal of Geophysical Research. 115, A3, 7 p.
Journal article

Magnetosonic Mach number dependence of the efficiency of reconnection between planetary and interplanetary magnetic fields
Grocott, A., Badman, S.V., Cowley, S., Milan, S., Nichols, J., Yeoman, T. 18/07/2009 In: Journal of Geophysical Research. 114, A7, 9 p.
Journal article

Cluster and Double Star multipoint observations of a plasma bubble
Walsh, A.P., Fazakerley, A.N., Lahiff, A.D., Volwerk, M., Grocott, A., Dunlop, M.W., Lui, A.T.Y., Kistler, L.M., Lester, M., Mouikis, C., Pu, Z., Shen, C., Shi, J., Taylor, M.G.G.T., Lucek, E., Zhang, T.L., Dandouras, I. 16/02/2009 In: Annales Geophysicae. 27, 2, p. 725-743. 19 p.
Journal article

A superposed epoch analysis of auroral evolution during substorm growth, onset and recovery: open magnetic flux control of substorm intensity
Milan, S.E., Grocott, A., Forsyth, C., Imber, S.M., Boakes, P.D., Hubert, B. 11/02/2009 In: Annales Geophysicae. 27, 2, p. 659-668. 10 p.
Journal article

Superposed epoch analysis of the ionospheric convection evolution during substorms: onset latitude dependence
Grocott, A., Wild, J., Milan, S., Yeoman, T. 5/02/2009 In: Annales Geophysicae. 27, 2, p. 591-600. 10 p.
Journal article

Open magnetic flux and magnetic flux closure during sawtooth events
Hubert, B., Milan, S.E., Grocott, A., Cowley, S.W.H., Gérard, J.C. 3/12/2008 In: Geophysical Research Letters. 35, 23, 6 p.
Journal article

Magnetotail dipolarization and associated current systems observed by Cluster and Double Star
Volwerk, M., Lui, A.T.Y., Lester, M., Walsh, A.P., Alexeev, I., Cao, X., Dunlop, M.W., Fazakerley, A.N., Grocott, A., Kistler, L., Lun, X., Mouikis, C., Pu, Z., Shen, C., Shi, J.K., Taylor, M.G.G.T., Baumjohann, W., Nakamura, R., Runov, A., Vörös, Z., Zhang, T.L., Takada, T., Rème, H., Klecker, B., Carr, C.M. 8/08/2008 In: Journal of Geophysical Research. 113, A8, 13 p.
Journal article

Looking through the oval window
Milan, S.E., Grocott, A., Forsyth, C., Imber, S.M., Boakes, P.D., Hubert, B. 1/08/2008 In: Astronomy and Geophysics. 49, 4, p. 4.16-4.18. 3 p.
Journal article

Near-Earth substorm features from multiple satellite observations
Lui, A.T.Y., Volwerk, M., Dunlop, M.W., Alexeev, I.V., Fazakerley, A.N., Walsh, A.P., Lester, M., Grocott, A., Mouikis, C., Henderson, M.G., Kistler, L.M., Shen, C., Shi, J.K., Zhang, T.L., Rème, H. 07/2008 In: Journal of Geophysical Research. 113, A7, 17 p.
Journal article

Interplanetary magnetic field control of fast azimuthal flows in the nightside high-latitude ionosphere
Grocott, A., Milan, S.E., Yeoman, T.K. 24/04/2008 In: Geophysical Research Letters. 35, 8, 5 p.
Journal article

The influence of magnetospheric substorms on SuperDARN radar backscatter
Wild, J.A., Grocott, A. 04/2008 In: Journal of Geophysical Research. 113, 6 p.
Journal article

Observed tail current systems associated with bursty bulk flows and auroral streamers during a period of multiple substorms
Forsyth, C., Lester, M., Cowley, S.W.H., Dandouras, I., Fazakerley, A.N., Fear, R.C., Frey, H.U., Grocott, A., Kadokura, A., Lucek, E., Rème, H., Milan, S.E., Watermann, J. 4/02/2008 In: Annales Geophysicae. 26, 1, p. 167-184. 8 p.
Journal article

Auroral streamers and magnetic flux closure
Hubert, B., Kauristie, K., Amm, O., Milan, S.E., Grocott, A., Cowley, S.W.H., Pulkkinen, T.I. 9/08/2007 In: Geophysical Research Letters. 34, 15, 6 p.
Journal article

Multi-scale observations of magnetotail flux transport during IMF-northward non-substorm intervals
Grocott, A., Yeoman, T.K., Milan, S.E., Amm, O., Frey, H.U., Juusola, L., Nakamura, R., Owen, C.J., Rème, H., Takada, T. 30/07/2007 In: Annales Geophysicae. 25, 7, p. 1709-1720. 12 p.
Journal article

The magnetosphere under weak solar wind forcing
Farrugia, C.J., Grocott, A., Sandholt, P.E., Cowley, S.W.H., Miyoshi, Y., Rich, F.J., Jordanova, V.K., Torbert, R.B., Sharma, A. 1/02/2007 In: Annales Geophysicae. 25, 1, p. 191-205. 15 p.
Journal article

A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions
Chisham, G., Lester, M., Milan, S.E., Freeman, M.P., Bristow, W.A., Grocott, A., Mcwilliams, K.A., Ruohoniemi, J.M., Yeoman, T.K., Dyson, P.L., Greenwald, R.A., Kikuchi, T., Pinnock, M., Rash, J.P.S., Sato, N., Sofko, G.J., Villain, J., Walker, A.D.M. 01/2007 In: Surveys in Geophysics. 28, 1, p. 33-109. 77 p.
Journal article

Towards a synthesis of substorm electrodynamics: HF radar and auroral observations
Grocott, A., Lester, M., Parkinson, M.L., Yeoman, T.K., Dyson, P.L., Devlin, J.C., Frey, H.U. 21/12/2006 In: Annales Geophysicae. 24, 12, p. 3365-3381. 17 p.
Journal article

Dayside flow bursts and high-latitude reconnection when the IMF is strongly northward
Hu, H., Yeoman, T.K., Lester, M., Liu, R., Yang, H., Grocott, A. 13/09/2006 In: Annales Geophysicae. 24, 8, p. 2227-2242. 16 p.
Journal article

Compression of the Earth's magnetotail by interplanetary shocks directly drives transient magnetic flux closure
Hubert, B., Palmroth, M., Laitinen, T.V., Janhunen, P., Milan, S.E., Grocott, A., Cowley, S.W.H., Pulkkinen, T., Gérard, J. 31/05/2006 In: Geophysical Research Letters. 33, 10, 4 p.
Journal article

Dayside and nightside reconnection rates inferred from IMAGE FUV and Super Dual Auroral Radar Network data
Hubert, B., Milan, S.E., Grocott, A., Blockx, C., Cowley, S.W.H., Gérard, J. 28/03/2006 In: Journal of Geophysical Research. 111, A3, 16 p.
Journal article

Cluster observations of a magnetic field cavity in the plasma sheet
Draper, N.C., Lester, M., Cowley, S.W.H., Bosqued, J.M., Grocott, A., Wild, J.A., Bogdanova, Y.V., Fazakerley, A.N. 2006 In: Advances in Space Research. 38, 8, p. 1738-1743. 6 p.
Journal article

Monitoring the dayside and nightside reconnection rates during various auroral events using IMAGE-FUV and SuperDARN data
Hubert, B., Palmroth, M., Milan, S.E., Grocott, A., Janhunen, P., Kauristie, K., Cowley, S.W.H., Pulkkinen, T.I., Gerard, J. 2006 In: Eighth International Conference on Substorms. Institute for Space Research, University of Calgary p. 117-121. 5 p.
Paper

Observations of tail dynamics using ground and space based instruments during a period of multiple substorm events
Forsyth, C., Lester, M., Milan, S.E., Grocott, A., Frey, H.U., Lucek, E., Reme, H., Watermann, J. 2006 In: Eighth International Conference on Substorms. Institute for Space Research, University of Calgary p. 65-70.
Paper

Space- and ground-based investigations of solar wind-magnetosphere-ionosphere coupling
Milan, S.E., Wild, J.A., Grocott, A., Draper, N.C. 2006 In: Advances in Space Research. 38, 8, p. 1671-1677. 7 p.
Journal article

SuperDARN observations of ionospheric convection during magnetospheric substorms
Grocott, A., Yeoman, T.K. 2006 In: Eighth International Conference on Substorms. Institute for Space Research, University of Calgary p. 81-86.
Paper

Cluster magnetotail observations of a tailward-travelling plasmoid at substorm expansion phase onset and field aligned currents in the plasma sheet boundary layer
Draper, N.C., Lester, M., Cowley, S.W.H., Wild, J.A., Milan, S.E., Provan, G., Grocott, A., Fazakerley, A.N., Lahiff, A., Davies, J.A., Bosqued, J.M., Dewhurst, J.P., Nakamura, R., Owen, C.J., Watermann, J.F., Henderson, M.G., Singer, H.J., Donovan, E. 12/2005 In: Annales Geophysicae. 23, 12, p. 3667-3683. 17 p.
Journal article

Modulation of dayside reconnection during northward interplanetary magnetic field
Provan, G., Lester, M., Cowley, S.W.H., Grocott, A., Milan, S.E., Hubert, B., Khan, H. 20/10/2005 In: Journal of Geophysical Research. 110, A10, 13 p.
Journal article

Interhemispheric observations of the ionospheric signature of tail reconnection during IMF-northward non-substorm intervals
Grocott, A., Yeoman, T.K., Milan, S.E., Cowley, S.W.H. 28/07/2005 In: Annales Geophysicae. 23, 5, p. 1763-1770. 8 p.
Journal article

Pulsed flows observed during an interval of prolonged northward IMF
Provan, G., Lester, M., Grocott, A., Cowley, S.W.H. 3/06/2005 In: Annales Geophysicae. 23, 4, p. 1207-1225. 19 p.
Journal article

Localized fast flow disturbance observed in the plasma sheet and in the ionosphere
Nakamura, R., Amm, O., Laakso, H., Draper, N.C., Lester, M., Grocott, A., Klecker, B., Mccrea, I.W., Balogh, A., Rème, H., André, M. 28/02/2005 In: Annales Geophysicae. 23, 2, p. 553-566. 14 p.
Journal article

Formation and motion of a transpolar arc in response to dayside and nightside reconnection
Milan, S.E., Hubert, B., Grocott, A. 19/01/2005 In: Journal of Geophysical Research. 110, A1, 11 p.
Journal article

A joint cluster and ground-based instrument study of two magnetospheric substorm events on 1st september 2002
Draper, N.C., Lester, M., Wild, J.A., Milan, S.E., Provan, G., Grocott, A., Cowley, S.W.H., Bogdanova, Y.V., Dewhirst, J.P., Fazakerley, A.N., Davies, J.A., Bosqued, J.M. 12/2004 In: Annales Geophysicae. 22, 12, p. 4217-4228. 12 p.
Journal article

The influence of IMF By on the nature of the nightside high-latitude ionospheric flow during intervals of positive IMF Bz
Grocott, A., Badman, S.V., Cowley, S.W.H., Yeoman, T.K., Cripps, P.J. 8/04/2004 In: Annales Geophysicae. 22, 5, p. 1755-1764. 10 p.
Journal article

Multi-instrument observations of the ionospheric counterpart of a bursty bulk flow in the near-Earth plasma sheet
Grocott, A., Yeoman, T., Nakamura, R., Cowley, S., Frey, H., Rème, H., Klecker, B. 21/03/2004 In: Annales Geophysicae. 22, 4, p. 1061-1075. 15 p.
Journal article

Multi-instrument observations of bursty bulk flows and their ionospheric counterparts
Grocott, A., Yeoman, T.K., Cowley, S.W.H., Reme, H. 2004 In: Seventh International Conference on Substorms. Helsinki, Finland : Finnish Meteorological Institute p. 107–110. 4 p.
Paper

Simultaneous SuperDARN and Cluster observations of the growth and expansion phases of substorms
Draper, N.C., Lester, M., Wild, J., Milan, S.E., Provan, G., Grocott, A., Cowley, S.W.H., Fazakerley, A.N., Lahiff, A., Davies, J.A., Bosqued, J., Dewhurst, J.P., Nakamura, R., Owen, C.J. 2004 In: Seventh International Conference on Substorms. Helsinki, Finland : Finnish Meteorological Institute p. 103–106. 4 p.
Paper

Ionospheric flow during extended intervals of northward but BY-dominated IMF
Grocott, A., Cowley, S., Sigwarth, J. 02/2003 In: Annales Geophysicae. 21, 2, p. 509-538. 30 p.
Journal article

Solar wind-magnetosphere-ionosphere interactions in the earth's plasma environment
Cowley, S.W.H., Davies, J.A., Grocott, A., Khan, H., Lester, M., McWilliams, K.A., Milan, S.E., Provan, G., Sandholt, P.E., Wild, J.A., Yeoman, T.K. 01/2003 In: Philosophical Transactions of the Royal Society of London A. 361, 1802, p. 113-126. 14 p.
Journal article

Polar, Cluster and SuperDARN evidence for high latitude merging during southward IMF: temporal/spatial evolution
Maynard, N.C., Ober, D.M., Burke, W.J., Scudder, J.D., Lester, M., Dunlop, M.W., Wild, J.A., Grocott, A., Farrugia, C.J., Lund, E., Russell, C.T., Weimer, D.R., Siebert, K.D., Balogh, A., André, M., Rème, H. 2003 In: Annales Geophysicae. 21, 12, p. 2233-2258. 26 p.
Journal article

Excitation of twin-vortex flow in the nightside high-latitude ionosphere during an isolated substorm
Grocott, A., Cowley, S., Sigwarth, J., Watermann, J., Yeoman, T. 10/2002 In: Annales Geophysicae. 20, 10, p. 1577-1601. 25 p.
Journal article

Comparison of ionospheric electric currents and plasma convection patterns observed during substorms
Grocott, A., Cowley, S.W.H., Davies, J.A. 16/05/2000 In: Proc. 5th International Conference on Substorms. European Space Agency p. 295-298.
Paper