The first assimilation of Akatsuki single-layer winds and its validation with Venusian atmospheric waves excited by solar heating.

ABSTRACT: The planetary missions including the Venus Climate Orbiter 'Akatsuki' provide new information on various atmospheric phenomena. Nevertheless, it is difficult to elucidate their three-dimensional structures globally and continuously only from observations because satellite observations are considerably limited in time and space. We constructed the first 'objective analysis' of Venus' atmosphere by assimilating cloud-top horizontal winds on the dayside from the equator to mid-latitudes, which is frequently obtained from Akatsuki's Ultraviolet Imager (UVI). The three-dimensional structures of thermal tides, found recently to play a crucial role in maintaining the super rotation, are greatly improved by the data assimilation. This result is confirmed by comparison with Akatsuki's temperature o

SUBMITTER: Fujisawa Y 

PROVIDER: S-EPMC9418169 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature