Space Sciences

Direct detection of atomic oxygen on the dayside and nightside of Venus

H. Hübers, H. Richter, et al.

Exciting advancements in Venusian atmospheric research have been achieved by Heinz-Wilhelm Hübers, Heiko Richter, Urs U. Graf, Rolf Güsten, Bernd Klein, Jürgen Stutzki, and Helmut Wiesemeyer. Their direct detection of atomic oxygen in both the dayside and nightside atmospheres at 4.74 THz opens new doors for understanding this enigmatic planet, concentrating around the 100 km altitude and influenced by CO2 and CO photolysis.

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Abstract

Atomic oxygen, a key species in Venus's mesosphere and thermosphere, is directly detected on both the dayside and nightside using its ground-state transition at 4.74 THz (63.2 µm). Concentrated around 100 km altitude, it peaks on the dayside due to CO2 and CO photolysis and is transported to the nightside. This direct detection method, unlike previous indirect methods, allows for detailed investigations of the Venusian atmosphere, supporting future space missions.

Publisher

Nature Communications

Published On

Nov 07, 2023

Authors

Heinz-Wilhelm Hübers, Heiko Richter, Urs U. Graf, Rolf Güsten, Bernd Klein, Jürgen Stutzki, Helmut Wiesemeyer

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