Search Results - "ROWELL, T. J"

Modeling Equatorial F‐Region Ionospheric Instability Using a Regional Ionospheric Irregularity Model and WAM‐IPE by Hysell, D. L., Fang, T. W., Fuller‐Rowell, T. J.

“…This paper uses a regional simulation of plasma convective instability in the postsunset equatorial ionosphere together with a global…”
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Interaction between direct penetration and disturbance dynamo electric fields in the storm-time equatorial ionosphere by Maruyama, N., Richmond, A. D., Fuller-Rowell, T. J., Codrescu, M. V., Sazykin, S., Toffoletto, F. R., Spiro, R. W., Millward, G. H.

“…The direct penetration of the high‐latitude electric field to lower latitudes, and the disturbance dynamo, both play a significant role in restructuring the…”
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Midnight density and temperature maxima, and thermospheric dynamics in Whole Atmosphere Model simulations by Akmaev, R. A., Wu, F., Fuller-Rowell, T. J., Wang, H., Iredell, M. D.

“…Hydrostatic expansion in a gravity field of an atmospheric layer with elevated temperatures, such as the long known thermospheric midnight temperature maximum…”
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First forecast of a sudden stratospheric warming with a coupled whole-atmosphere/ionosphere model IDEA by Wang, H., Akmaev, R. A., Fang, T.-W., Fuller-Rowell, T. J., Wu, F., Maruyama, N., Iredell, M. D.

“…We present the first “weather forecast” with a coupled whole‐atmosphere/ionosphere model of Integrated Dynamics in Earth's Atmosphere (IDEA) for the January…”
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First simulations with a whole atmosphere data assimilation and forecast system: The January 2009 major sudden stratospheric warming by Wang, H., Fuller-Rowell, T. J., Akmaev, R. A., Hu, M., Kleist, D. T., Iredell, M. D.

“…A Whole atmosphere Data Assimilation System (WDAS) is used to simulate the January 2009 sudden stratospheric warming (SSW). WDAS consists of the Whole…”
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Tidal variability in the lower thermosphere: Comparison of Whole Atmosphere Model (WAM) simulations with observations from TIMED by Akmaev, R. A., Fuller-Rowell, T. J., Wu, F., Forbes, J. M., Zhang, X., Anghel, A. F., Iredell, M. D., Moorthi, S., Juang, H.-M.

“…The upper atmosphere and ionosphere exhibit variability on spatial and temporal scales characteristic of tides and planetary waves originating in the lower…”
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Midnight temperature maximum (MTM) in Whole Atmosphere Model (WAM) simulations by Akmaev, R. A., Wu, F., Fuller-Rowell, T. J., Wang, H.

“…Discovered almost four decades ago, the midnight temperature maximum (MTM) with typical magnitudes of 50–100 K has been regularly observed by satellite and…”
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Impact of terrestrial weather on the upper atmosphere by Fuller-Rowell, T. J., Akmaev, R. A., Wu, F., Anghel, A., Maruyama, N., Anderson, D. N., Codrescu, M. V., Iredell, M., Moorthi, S., Juang, H.-M., Hou, Y.-T., Millward, G.

“…A whole atmosphere model has been developed to demonstrate the impact of terrestrial weather on the upper atmosphere. The dynamical core is based on the NWS…”
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Effect of Magnetic Storm Related Thermospheric Changes on the Evolution of Equatorial Plasma Bubbles by Bhattacharyya, A., Fedrizzi, M., Fuller‐Rowell, T. J., Gurram, P., Kakad, B., Sripathi, S., Sunda, S.

“…Past efforts to predict scintillations on VHF and L‐band radio signals recorded at equatorial and low‐latitude stations have been mostly based on a theoretical…”
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Thermospheric zonal mean winds and tides revealed by CHAMP by Lieberman, R. S., Akmaev, R. A., Fuller‒Rowell, T. J., Doornbos, E.

“…We present direct, global observations of longitudinally averaged CHAMP zonal winds gathered between 2003 and 2007. A diurnal variation dominates the global…”
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The "thermospheric spoon": A mechanism for the semiannual density variation by Fuller‐Rowell, T. J.

“…A mechanism is proposed to explain the cause of the global, semiannual thermospheric density variation. It is suggested that the global‐scale, interhemispheric…”
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An investigation into the influence of tidal forcing on F region equatorial vertical ion drift using a global ionosphere-thermosphere model with coupled electrodynamics by Millward, G. H., Müller‐Wodarg, I. C. F., Aylward, A. D., Fuller‐Rowell, T. J., Richmond, A. D., Moffett, R. J.

“…A recent development of the coupled thermosphere‐ionosphere‐plasmasphere model (CTIP) has been the inclusion of the electrodynamic coupling between the…”
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Annual and semiannual variations in the ionospheric F2-layer : II. Physical discussion by RISHBETH, H, MÜLLER-WODARG, I. C. F, ZOU, L, FULLER-ROWELL, T. J, MILLWARD, G. H, MOFFETT, R. J, IDENDEN, D. W, AYLWARD, A. D

“…The companion paper by Zou et al. shows that the annual and semiannual variations in the peak F2-layer electron density (NmF2) at midlatitudes can be…”
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Validation of the STORM response in IRI2000 by Araujo‐Pradere, E. A., Fuller‐Rowell, T. J., Bilitza, D.

“…The latest version of the International reference ionosphere, IRI2000 [Bilitza, 2001], contains a dependence on geomagnetic activity based on an empirical…”
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Dynamic and energetic coupling in the equatorial ionosphere and thermosphere by Maruyama, N., Watanabe, S., Fuller-Rowell, T. J.

“…A three‐dimensional coupled model of the global ionosphere and thermosphere has been used to examine the importance of ion drag parallel to the geomagnetic…”
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STORM: An empirical storm-time ionospheric correction model 1. Model description by Araujo-Pradere, E. A., Fuller-Rowell, T. J., Codrescu, M. V.

“…Using data from 75 ionosonde stations and 43 storms, and based on the knowledge gained from simulations from a physically based model, we have developed an…”
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Characteristics of the ionospheric variability as a function of season, latitude, local time, and geomagnetic activity by Araujo-Pradere, E. A., Fuller-Rowell, T. J., Codrescu, M. V., Bilitza, D.

“…An ionospheric F2 critical frequency database has been assembled to determine the variability of the F region as a function of local time, latitude, season,…”
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STORM: An empirical storm-time ionospheric correction model 2. Validation by E. A. Araujo-Pradere, T. J. Fuller-Rowell

“…STORM is an empirical ionospheric correction model designed to capture the changes in F region electron density during geomagnetic storms. The model is driven…”
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Electric field variability associated with the Millstone Hill electric field model by Codrescu, M. V., Fuller‐Rowell, T. J., Foster, J. C., Holt, J. M., Cariglia, S. J.

“…Joule heating that is generated at high latitudes in the thermosphere because of the magnetospherically imposed electric potential is proportional to the…”
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Annual and semiannual variations in the ionospheric F2-layer. I. Modelling by ZOU, L, RISHBETH, H, MÜLLER-WODARG, I. C. F, AYLWARD, A. D, MILLWARD, G. H, FULLER-ROWELL, T. J, IDENDEN, D. W, MOFFETT, R. J

“…Annual, seasonal and semiannual variations of F2-layer electron density (NmF2) and height (hmF2) have been compared with the coupled…”
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