DOAJ Open Access 2023

How the Hunga Tonga—Hunga Ha'apai Water Vapor Cloud Impacts Its Transport Through the Stratosphere: Dynamical and Radiative Effects

Ulrike Niemeier Sandra Wallis Claudia Timmreck Trang vanPham Christian vonSavigny

Abstrak

Abstract The eruption of the Hunga Tonga—Hunga Ha'apai (HTHH) volcano on 15 January 2022 injected about 150 Tg of water vapor (H2O), roughly 10% of the background stratospheric H2O content, to altitudes above 50 km. Simulations of the spatial evolution of the H2O cloud with the ICON‐Seamless model are very close to observations from the Aura Microwave Limb Sounder. The vertical transport of the H2O cloud had three phases: an initial subsidence phase, a stable phase, and a rising phase. Radiative cooling of H2O clearly affects the transport of the H2O cloud, as demonstrated with passive tracers, and is the main driver within the subsidence phase. It also counteracts the large‐scale rising motion in the tropics, leading to the stable phase, and modulates the large‐scale transport of the H2O cloud for about 9 months. This holds for different QBO phases, where the H2O cloud differs mainly in its vertical extent.

Topik & Kata Kunci

Geophysics. Cosmic physics

Penulis (5)

Ulrike Niemeier

Sandra Wallis

Claudia Timmreck

Trang vanPham

Christian vonSavigny

Format Sitasi

APA MLA BibTeX

Niemeier, U., Wallis, S., Timmreck, C., vanPham, T., vonSavigny, C. (2023). How the Hunga Tonga—Hunga Ha'apai Water Vapor Cloud Impacts Its Transport Through the Stratosphere: Dynamical and Radiative Effects. https://doi.org/10.1029/2023GL106482

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1029/2023GL106482
Akses: Open Access ✓