TY - JOUR
T1 - Contribution of the lower atmosphere to the day-to-day variation of thermospheric density
AU - Yue, Jia
AU - Yu, Wandi
AU - Pedatella, Nick
AU - Bruinsma, Sean
AU - Wang, Ningchao
AU - Liu, Huixin
N1 - Funding Information:
JY is supported by NSF 2140031 and NASA CCMC grant. H. L. acknowledges supports by JSPS KAKENHI Grants 18H01270, 17KK0095, and JRPs-LEAD with DFG program JPJSJRP 20181602. SB is supported by CNES APR grant METEOESP. NP acknowledges support from NASA Grant 80NSSC20K0628. This material is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the U.S. National Science Foundation under Cooperative Agreement 1852977. We would like to acknowledge high-performance computing support from Cheyenne (doi: 10.5065/D6RX99HX ) provided by NCAR's Computational and Information Systems Laboratory, sponsored by the National Science Foundation. We thank the organizers of the ISWAT 2020 meeting in Florida where the initial discussions took place. We thank the constructive comments made by the two anonymous reviewers.
Publisher Copyright:
© 2022 COSPAR
PY - 2022
Y1 - 2022
N2 - In this paper we carried out a numerical experiment using the Specified Dynamics mode of the Whole Atmosphere Community Climate Model with thermosphere and ionosphere eXtension (SD-WACCM-X). One SD-WACCM-X run was with realistic Kp and F10.7 and the other with constant Kp and F10.7. By comparing the day-to-day variability of thermosphere mass density at 300 km (low earth orbit, LEO) and 120 km (reentry level) in these two runs, we find that the density variation at 300 km is mainly driven by geomagnetic and solar forcing while at 120 km it is exclusively controlled by the lower atmosphere. At LEO altitudes, during solar minimum and geomagnetic quiet days, the impact from the lower atmosphere is much smaller than the effect of solar and geomagnetic variations but is not negligible (5–10% vs 20%).
AB - In this paper we carried out a numerical experiment using the Specified Dynamics mode of the Whole Atmosphere Community Climate Model with thermosphere and ionosphere eXtension (SD-WACCM-X). One SD-WACCM-X run was with realistic Kp and F10.7 and the other with constant Kp and F10.7. By comparing the day-to-day variability of thermosphere mass density at 300 km (low earth orbit, LEO) and 120 km (reentry level) in these two runs, we find that the density variation at 300 km is mainly driven by geomagnetic and solar forcing while at 120 km it is exclusively controlled by the lower atmosphere. At LEO altitudes, during solar minimum and geomagnetic quiet days, the impact from the lower atmosphere is much smaller than the effect of solar and geomagnetic variations but is not negligible (5–10% vs 20%).
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U2 - 10.1016/j.asr.2022.06.011
DO - 10.1016/j.asr.2022.06.011
M3 - Article
AN - SCOPUS:85132911673
SN - 0273-1177
JO - Advances in Space Research
JF - Advances in Space Research
ER -
