Atmospheric Dynamics Footprint on the January 2016 Ice Sheet Melting in West Antarctica

In January of 2016, the Ross Sea sector of the West Antarctica ice sheet experienced a 3-week-long melting episode. Here we quantify the association of the large-extent and long-lasting melting event with the enhancement of the downward longwave (LW) radiative fluxes at surface due to water vapor, c...

Full description

Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Hu, Xiaoming, Sejas, Sergio A., Cai, Ming, Li, Zhenning, Yang, Song
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Ross Sea
West Antarctica
Antarc*
Antarctica
Ice Sheet
Online Access:http://repository.ust.hk/ir/Record/1783.1-109982
https://doi.org/10.1029/2018GL081374
http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0094-8276&rft.volume=v. 46&rft.issue=(5)&rft.date=2019&rft.spage=2829&rft.aulast=Hu&rft.aufirst=X.&rft.atitle=Atmospheric+Dynamics+Footprint+on+the+January+2016+Ice+Sheet+Melting+in+West+Antarctica&rft.title=Geophysical+Research+Letters
http://www.scopus.com/record/display.url?eid=2-s2.0-85062975509&origin=inward
http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000462612900055
Description
Summary:In January of 2016, the Ross Sea sector of the West Antarctica ice sheet experienced a 3-week-long melting episode. Here we quantify the association of the large-extent and long-lasting melting event with the enhancement of the downward longwave (LW) radiative fluxes at surface due to water vapor, cloud, and atmospheric dynamic feedbacks using the ERA-Interim data set. The abnormally long-lasting temporal surges of atmospheric moisture, warm air, and low-level clouds increase the downward LW radiative energy flux at the surface during the massive ice-melting period. The concurrent timing and spatial overlap between poleward wind anomalies and positive downward LW radiative surface energy flux anomalies over West Antarctica due to warmer air temperature and increases in atmospheric water vapor and cloud coverage provide direct evidence that warm and moist air advection from lower latitudes to West Antarctica causes the rapid long-lasting warming and vast ice mass loss in January of 2016. ©2019. The Authors.

Similar Items