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Abstract

This dataset comprises numerical outputs from the thermosphere-ionosphere-electrodynamics general circulation model (TIE-GCM) 
simulations described in the article "Modeling of planetary wave influences on the pre-reversal enhancement of the equatorial F 
region vertical plasma drift" (Yamazaki & Diéval, 2021).

The TIE-GCM is a numerical model of the coupled thermosphere-ionosphere system (Richmond et al., 1992; Qian et al., 2014). 
In Yamazaki & Diéval (2021), the model was run under geomagnetically quiet (Kp=1) and high solar-flux (F10.7=200) conditions. 
The lower boundary of the model at ~97 km was specified with the the thermosphere-ionosphere-mesosphere electrodynamics general 
circulation model (TIME-GCM) (Roble & Ridley, 1994), which itself was constrained by the data from the Modern Era Retrospective-analysis 
for Research and Applications (MERRA) (Reinecker et al. 2011) for the year 2009. In this way, the TIE-GCM is able to reproduce effects 
of atmospheric forcing from the lower and middle atmosphere.

In addition to the simulation described above, which are referred to as "reference", Yamazaki & Diéval (2021) performed two other 
simulations with modified lower-boundary forcing. They are referred to as "no_PW" and "tides_only". See Yamazaki & Diéval (2021) for 
descriptions of different cases. The simulation results from these three cases are saved in separate files in a MATLAB format 
with a .mat extension. The model outputs from "reference", "no_PW", and "tides_only" cases can be found in "reference.mat", "no_PW.mat", 
and "tides_only.mat", respectively.

Each file contains the following variables:
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doy 		[365 x 1  ]	: day of year
longitude 	[1   x 144]	: longitude (degrees)
PRE_Vz		[365 x 144]	: intensity of pre-reversal enhancement (m/s)
PRE_LT		[365 x 144]	: local time of pre-reversal enhancement (hours)
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Descriptions of how PRE_Vz and PRE_LT are determined can be found in Yamazaki & Diéval (2021).


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Contact

Yosuke Yamazaki; GFZ German Research Centre for Geosciences, Potsdam, Germany
https://www.gfz-potsdam.de/en/staff/yosuke-yamazaki/sec23/

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Keywords

TIE-GCM, ionosphere, thermosphere
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Related Work

References:

Qian, L., Burns, A.G., Emery, B.A., Foster, B., Lu, G., Maute, A., Richmond, A.D., Roble, R.G., Solomon, S.C. & Wang (2014). 
The NCAR TIE-GCM: A community model of the coupled thermosphere/ionosphere system. Modeling the ionosphere-thermosphere system, 201, 73-83, https://dx.doi.org/10.1007%2Fs11214-017-0330-3

Rienecker, M.M., Suarez, M.J., Gelaro, R., Todling, R., Bacmeister, J., Liu, E., Bosilovich, M.G., Schubert, S.D., Takacs, L., Kim, G.K. and Bloom, S. (2011). 
MERRA: NASA’s modern-era retrospective analysis for research and applications. Journal of climate, 24(14), 3624-3648.(2011), https://doi.org/10.1175/JCLI-D-11-00015.1 

Richmond, A. D., Ridley, E. C., & Roble, R. G. (1992). A thermosphere/ionosphere general circulation model with coupled electrodynamics. 
Geophysical Research Letters, 19(6), 601-604, https://doi.org/10.1029/92GL00401

Roble, R. G., & Ridley, E. C. (1994). A thermosphere‐ionosphere‐mesosphere‐electrodynamics general circulation model (TIME‐GCM): 
Equinox solar cycle minimum simulations (30–500 km). Geophysical Research Letters, 21(6), 417-420, https://doi.org/10.1029/93GL03391

Supplement to:
Yamazaki, Y., & Diéval, C. (2021). Modeling of planetary wave influences on the pre‐reversal enhancement of the equatorial F region vertical plasma drift. Space Weather. https://doi.org/10.1029/2020sw002685