Search Results - "Clilverd, M.A"

Solar proton events and stratospheric ozone depletion over northern Finland by Denton, M.H., Kivi, R., Ulich, T., Rodger, C.J., Clilverd, M.A., Horne, R.B., Kavanagh, A.J.

“…We examine the variation of stratospheric ozone over northern Finland using ozonesonde observations from 1845 stratospheric balloon flights launched between…”
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Observed response of stratospheric and mesospheric composition to sudden stratospheric warmings by Denton, M.H., Kivi, R., Ulich, T., Rodger, C.J., Clilverd, M.A., Denton, J.S., Lester, M.

“…In this study we investigate and quantify the statistical changes that occur in the stratosphere and mesosphere during 37 sudden stratospheric warming (SSW)…”
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Comparison of Multiple and Logistic Regression Analyses of Relativistic Electron Flux Enhancement at Geosynchronous Orbit Following Storms by Capman, N.S.S., Simms, L.E., Engebretson, M.J., Clilverd, M.A., Rodger, C.J., Reeves, G.D., Lessard, M.R., Gjerloev, J.

“…Many factors influence relativistic outer radiation belt electron fluxes, such as waves in the ultralow frequency (ULF) Pc5, very low frequency (VLF), and…”
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Radiation belt electron precipitation by man-made VLF transmissions by Gamble, Rory J., Rodger, Craig J., Clilverd, Mark A., Sauvaud, Jean-André, Thomson, Neil R., Stewart, S. L., McCormick, Robert J., Parrot, Michel, Berthelier, Jean-Jacques

“…Enhancements of drift‐loss cone fluxes in the inner radiation belt have been observed to coincide with the geographic location of the powerful VLF transmitter…”
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Correction to “Radiation belt electron precipitation by man-made VLF transmissions” by Gamble, Rory J., Rodger, Craig J., Clilverd, Mark A., Sauvaud, Jean-André, Thomson, Neil R., Stewart, S. L., McCormick, Robert J., Parrot, Michel, Berthelier, Jean-Jacques

“…Received 27 March 2009; published 8 May 2009…”
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Methodological influences on F-region peak height trend analyses by Jarvis, M.J, Clilverd, M.A, Ulich, Th

“…Published estimates of the trend in hmF2 using data from ionosondes over the last 30–40 years range from +0.8 to −0.6 km yr −1 and are subject to the influence…”
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A quantitative estimate of the ducted whistler power within the outer plasmasphere by Smith, A.J, Grieve, M.B, Clilverd, M.A, Rodger, C.J

“…From a statistical study of ducted whistlers observed at Halley, Antarctica, in 1996, which had propagated on paths in the range L=2.5–4.5, we report mean…”
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Lightning atmospherics count rates observed at Halley, Antarctica by Watkins, N.W, Clilverd, M.A, Smith, A.J, Rodger, C.J, Bharmal, N.A, Yearby, K.H

“…Lightning is considered to be a sensitive indicator of global change in the troposphere. In this paper we report the first results from the lightning…”
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Increased magnetic storm activity from 1868 to 1995 by Clilverd a, M.A., Clark, T.D.G., Clarke, E., Rishbeth, H.

“…The aa index provides the longest continuous data set which can be used in the analysis of magnetospheric and ionospheric phenomenology. All phases of the…”
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Doppler shift pulsations on whistler mode signals from a VLF transmitter by Yearby, K.H., Clilverd, M.A.

“…Whistler mode signals from the NAA transmitter (24 kHz) received at Faraday, Antarctica are processed to obtain the Doppler shift at a much higher time…”
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The effect of the mid-latitude ionospheric trough on whistler mode ducting during magnetic storms by Clilverd, M.A., Thomson, N.R., Smith, A.J.

“…Whistler-mode signals observed at Faraday, Antarctica (65° S, 64° W, Λ=50.8°) show anomalous changes in group delay and Doppler shift with time during the main…”
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