Temporal Variability of Atomic Hydrogen From the Mesopause to the Upper Thermosphere
作者： Liying Qian , Alan G. Burns , Stan S. Solomon , Anne K. Smith , Joseph M. McInerney
DOI: 10.1002/2017JA024998
关键词: Solar cycle 、 Mesosphere 、 Thermosphere 、 Environmental science 、 Solar maximum 、 Ionosphere 、 Atmospheric sciences 、 Atmosphere 、 Solar minimum 、 Mesopause
摘要: We investigate atomic hydrogen (H) variability from the mesopause to upper thermosphere, on time scales of solar cycle, seasonal, and diurnal, using measurements made by Sounding Atmosphere Broadband Emission Radiometry (SABER) instrument Thermosphere Ionosphere Mesosphere Energetics Dynamics satellite, simulations National Center for Atmospheric Research Whole Community Climate Model‐eXtended (WACCM‐X). In region (85 95 km), seasonal cycle variations H simulated WACCM‐X are consistent with those SABER observations: density is higher in summer than winter, slightly at minimum maximum. However, Mass‐Spectrometer‐Incoherent‐Scatter (National Laboratory 00 (NRLMSISE‐00)) empirical model has reversed variation compared SABER. From switches its twice, dependence once, these changes occur lower thermosphere (~95 130 whereas NRLMSISE‐00 does not change through thermosphere. (above 150 maximum, winter summer, also during nighttime daytime. The amplitudes order factors ~10, ~2, respectively. This NRLMSISE‐00.
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