The formation and composition of the  Mount Everest plume in winter

Hindman, Edward E.; Lindstrom, Scott

doi:10.5194/acp-22-7995-2022

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The formation and composition of the Mount Everest plume in winter

2022
By Hindman, Edward E. ; Lindstrom, Scott
Source: Atmospheric Chemistry and Physics, 22(12), 7995-8008

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Details:

Journal Title:

Atmospheric Chemistry and Physics
Personal Author:

Hindman, Edward E. ; Lindstrom, Scott

Hindman, Edward E. ; Lindstrom, Scott Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service)
Description:

Mount Everest's summit pyramid is the highest obstacle on earth to the wintertime jet-stream winds. Downwind, in its wake, a visible plume can form. The meteorology and composition of the plume are unknown. Accordingly, daily from 1 November 2020 through 31 March 2021 (151 d), we observed real-time images from a geosynchronous meteorological satellite to identify the days plumes formed. The corresponding surface and upper-air meteorological data were collected. The massif was visible on 143 d (95 %), plumes formed on 63 d (44 %) and lasted an average of 12 h. We used the upper-air data with a basic meteorological model to show the plumes formed when sufficiently moist air was drawn into the wake. We conclude the plumes were composed initially of either cloud droplets or ice particles depending on the temperature. The plumes were not composed of resuspended snow. One plume was observed to glaciate downwind. We estimated snowfall from the plumes may be significant.
Keywords:

[+]

Atmospheric Science
Source:

Atmospheric Chemistry and Physics, 22(12), 7995-8008
DOI:

https://doi.org/10.5194/acp-22-7995-2022
ISSN:

1680-7324
Format:

PDF
Publisher:

Copernicus GmbH
Document Type:

Journal Article
Funding:

Grant no. NA20NES4320003
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

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urn:sha256:f94cc67c8d499459a328f035f999ea8692e9ca80f0b50bd4e17f9b346b2d86d4
Download URL:

https://repository.library.noaa.gov/view/noaa/58160/noaa_58160_DS1.pdf
File Type:

Machine readable version (XML)

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