Intense decadal variations of Venus' UV albedo, and its impact on solar heating rate and atmospheric dynamics

Yeon Joo Lee (1, 2) , Kandis-Lea Jessup (3) , Santiago Pérez-Hoyos (4) , Dmitrij V. Titov (5) , Sébastien Lebonnois (6) , Javier Peralta (7) , Takeshi Horinouchi (8) , Takeshi Imamura (1) , Sanjay Limaye (9) , Emmanuel Marcq (10) , Masahiro Takagi (11) , Atsushi Yamazaki (7) , Manabu Yamada (12) , Shigeto Watanabe (13) , Shin-Ya Murakami (7) , Kazunori Ogohara (14) , William Mcclintock (15) , Gregory Holsclaw (15) , Anthony Roman (16)

1 University of Tokyo [Kashiwa Campus]
2 TU - Technical University of Berlin / Technische Universität Berlin
3 SwRI - Southwest Research Institute [Boulder]
4 Departamento de Fisica Aplicada [Bilbao]
5 ESTEC - European Space Research and Technology Centre
6 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)
7 ISAS - Institute of Space and Astronautical Science
8 Hokkaido University [Sapporo, Japan]
9 Department of Atmospheric and Oceanic Sciences [Madison]
10 PLANETO - LATMOS
11 Kyoto Sangyo University
12 PERC - Planetary Exploration Research Center [Chiba]
13 Hokkaido Information University
14 University of Shiga Prefecture
15 LASP - Laboratory for Atmospheric and Space Physics [Boulder]
16 STSci - Space Telescope Science Institute

We report the first quantitative study on the variabil-ity of Venus’ cloud albedo at 365 nm using data ac-quired by four independent space-based instruments.We show a factor of 2 albedo variation had been oc-curred in the past decade. This is sufficient amount toalter solar heating rate at the cloud top level, whichconsequently can affect atmospheric dynamics, i.e.,zonal winds near the cloud top level

Domaines: Planète et Univers [physics]

Yeon Joo Lee, Kandis-Lea Jessup, Santiago Pérez-Hoyos, Dmitrij V. Titov, Sébastien Lebonnois, et al.. Intense decadal variations of Venus' UV albedo, and its impact on solar heating rate and atmospheric dynamics. EPSC-DPS Joint Meeting 2019, Sep 2019, Geneva, Switzerland. pp.EPSC-DPS2019-66-1. ⟨insu-02263277⟩