Water vapor effect in the upper atmosphere

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As part of the Super Soaker sounding rocket experiment, scientist released water from a rocket at 85 km to study the effects of water vapor exhaust from space traffic on the upper mesosphere. According to the published study, “The rapid formation of the cloud indicates that space traffic water exhaust may not only provide water for production of clouds but also cool the mesosphere to induce the formation of these clouds.” Polar mesospheric clouds (PMCs) occur in the summer near 82 ‐85km altitude due to seasonal changes of temperature and humidity.
Credit:
Cloud Formation From a Localized Water Release in the Upper Mesosphere: Indication of Rapid Cooling
Richard L. Collins, Michael H. Stevens, Irfan Azeem, Michael J. Taylor, Miguel F. Larsen, Bifford P. Williams, Jintai Li, Jennifer H. Alspach, Pierre‐Dominique Pautet, Yucheng Zhao, Xun Zhu
Space Physics, DOI: 10.1029/2019JA027285