Stereo Plume Height and Motion Retrievals for the Record-Setting Hunga Tonga-Hunga Ha'apai Eruption of 15 January 2022

被引：126
作者：
Carr, James L. [1 ]
Horvath, Akos [2 ]
Wu, Dong L. [3 ]
Friberg, Mariel D. [3 ,4 ]
机构：
[1] Carr Astronaut, Greenbelt, MD 20770 USA
[2] Univ Hamburg, Meteorol Inst, Hamburg, Germany
[3] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
[4] Univ Maryland, College Pk, MD 20742 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2022年 / 49卷 / 09期
关键词：
stereo; volcanic plume; Hunga Tonga; stratosphere; GNSS-RO; NEAR-LIMB IMAGERY; GEOMETRIC ESTIMATION; COLUMN HEIGHT; CLOUDS;
D O I：
10.1029/2022GL098131
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Stereo methods using GOES-17 and Himawari-8 applied to the Hunga Tonga-Hunga Ha'apai volcanic plume on 15 January 2022 show overshooting tops reaching 50-55 km altitude, a record in the satellite era. Plume height is important to understand dispersal and transport in the stratosphere and climate impacts. Stereo methods, using geostationary satellite pairs, offer the ability to accurately capture the evolution of plume top morphology quasi-continuously over long periods. Manual photogrammetry estimates plume height during the most dynamic early phase of the eruption and a fully automated algorithm retrieves both plume height and advection every 10 min during a more frequently sampled and stable phase beginning 3 hr after the eruption. Stereo heights are confirmed with Global Navigation Satellite System Radio Occultation bending angles, showing that much of the plume was lofted 30-40 km into the atmosphere. Cold bubbles are observed in the stratosphere with brightness temperature of similar to 173 K.
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页数：7
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