Middle Atmosphere Vertical Coupling Analyst
I have been at the British Antarctic Survey since 2012 working on projects involving the dynamics of the middle and upper atmosphere, using both ground and satellite data. Being a Space Weather scientist means that I have been lucky enough to spend time in both the Arctic and Antarctic during my career; the polar regions are the primary gateways by which space weather interacts with the Earth’s atmosphere. I am the PI on two middle atmosphere radars at our Antarctic bases and spend part of my time providing science support for the EISCAT ionospheric radars in Norway
In my career to date I have worked on a number of projects related to understanding the Sun-Earth system, these have includes studies of the aurora, HF radio absorption, particle dynamics, geomagnetic pulsations, plasma heating and mesospheric dust. I was very lucky to take part in experiments that generated artificial aurora and be the project scientist for a VLF receiver mounted on a Yorkshire school roof that formed part of the AARDDVARK network.
I study how the layers of the atmosphere and the near-Earth space environment couple together – known as vertical coupling.
My main interests are:
Each of these is important for our understanding of space weather events and how they impact our lives.
There is growing evidence that changes in the solar wind can lead to temperature changes in the polar regions. Waves the transfer energy and momentum into the upper atmosphere can modify conditions that affect satellite signal fade-out & scintillation, and the behaviour of electric current systems. Space weather events lead to heating of the upper atmosphere which in turn affects the lifetime of satellites and space debris in Low Earth Orbit (LEO). This is important to understand since LEO is becoming very crowded and collisions with debris can seriously damage satellites.
Part of the EISCAT Science Support Group working with colleagues at RAL Space
I co-supervise two PhD students at Southampton University; one with Dr. Robert Fear working on trans-polar arcs and one with Dr Hugh Lewis working on climate effects on space debris
Middle & Upper Atmosphere
Ionosphere and Aurora
Fritts, David C., Iimura, Hiroyuki, Janches, Diego, Lieberman, Ruth S., Riggin, Dennis M., Mitchell, Nicholas J., Vincent, Robert A., Reid, Iain M., Murphy, Damian J., Tsutsumi, Masaki, Kavanagh, Andrew J., Batista, Paulo P., Hocking, Wayne K.. (2019) Structure, variability, and mean-flow interactions of the January 2015 quasi-two-day wave at middle and high southern latitudes. Journal of Geophysical Research: Atmospheres, 124. 5981-6008. 10.1029/2018JD029728
Denton, M.H., Kivi, R., Ulich, T., Rodger, C.J., Clilverd, M.A., Horne, R.B., Kavanagh, A.J.. (2018) Solar proton events and stratospheric ozone depletion over northern Finland. Journal of Atmospheric and Solar-Terrestrial Physics, 177. 218-227. 10.1016/j.jastp.2017.07.003
Kavanagh, Andrew J., Cobbett, Neil, Kirsch, Peter. (2018) Radiation belt slot-region filling events: sustained energetic precipitation into the mesosphere. Journal of Geophysical Research: Space Physics, 123. 7999-8020. 10.1029/2018JA025890
Reidy, Jade A., Fear, R.C., Whiter, D.K., Lanchester, B., Kavanagh, Andrew J., Milan, S.E., Carter, J.A., Paxton, L.J., Zhang, Y.. (2018) Interhemispheric survey of polar cap aurora. Journal of Geophysical Research: Space Physics, 123. 7283-7306. 10.1029/2017JA025153
Newnham, David A., Clilverd, Mark A., Rodger, C.J., Hendrickx, K., Megner, L., Kavanagh, Andrew J., Seppälä, A., Verronen, P.T., Andersson, M.E., Marsh, D.R., Kovács, T., Feng, W., Plane, J.M.C.. (2018) Observations and modelling of increased nitric oxide in the Antarctic polar middle atmosphere associated with geomagnetic storm driven energetic electron precipitation. Journal of Geophysical Research: Space Physics, 123. 6009-6025. 10.1029/2018JA025507
Reidy, J.A., Fear, R.C., Whiter, D.K., Lanchester, B.S., Kavanagh, A.J., Paxton, L.J., Zhang, Y., Lester, M.. (2017) Multi-instrument observation of simultaneous polar cap auroras on open and closed magnetic field lines. Journal of Geophysical Research, 122. 4367-4386. 10.1002/2016JA023718
Moffat-Griffin, Tracy, Taylor, Mike J., Nakamura, Takuji, Kavanagh, Andrew J., Hosking, J. Scott, Orr, Andrew. (2017) 3rd ANtarctic Gravity Wave Instrument Network (ANGWIN) science workshop. Advances in Atmospheric Sciences, 34. 1-3. doi:10.1007/s00376-016-6197-5
Rao, N. Venkateswara, Espy, P.J., Hibbins, R.E., Fritts, D.C., Kavanagh, A.J.. (2015) Observational evidence of the influence of Antarctic stratospheric ozone variability on middle atmosphere dynamics. Geophysical Research Letters, 42. 7853-7859. 10.1002/2015GL065432
Rodger, Craig J., Kavanagh, Andrew J., Clilverd, Mark A., Marple, Steve R.. (2013) Comparison between POES energetic electron precipitation observations and riometer absorptions; implications for determining true precipitation fluxes. Journal of Geophysical Research: Space Physics, 118. 7810-7821. 10.1002/2013JA019439
Moffat-Griffin, T., Jarvis, M.J., Colwell, S.R., Kavanagh, A.J., Manney, G.L., Daffer, W.H.. (2013) Seasonal variations in lower stratospheric gravity wave energy above the Falkland Islands. Journal of Geophysical Research: Atmospheres, 118. 10861-10869. 10.1002/jgrd.50859
Most advanced space weather radar to be built in Arctic
News 23 August, 2017
EXHIBITION: New Scientist Live
Event 22 September, 2016