Show simple item record

dc.contributor.authorBehrangi, Ali
dc.contributor.authorGardner, Alex S
dc.contributor.authorWiese, David N
dc.date.accessioned2021-01-09T03:10:19Z
dc.date.available2021-01-09T03:10:19Z
dc.date.issued2020-09-18
dc.identifier.citationBehrangi, A., Gardner, A. S., & Wiese, D. N. (2020). Comparative analysis of snowfall accumulation over Antarctica in light of ice discharge and gravity observations from space. Environmental Research Letters, 15(10), 104010.en_US
dc.identifier.issn1748-9326
dc.identifier.doi10.1088/1748-9326/ab9926
dc.identifier.urihttp://hdl.handle.net/10150/650699
dc.description.abstractThe remote and cold Antarctic continent presents unique challenges to quantify precipitation rates from space andin situobservations. This has resulted in large uncertainties in current estimates. In this study, we quantify annual precipitation rates over seven Antarctic basins using a novel mass budget (MB) approach, by building on the recent Landsat based estimate of ice discharge and changes in total water storage from GRACE. The MB precipitation rates are compared with those from CloudSat, GPCP, the Arthern precipitation climatology, the GPM constellation sensors, a few popular reanalysis products, and a regional climate model for two periods: 2007-2010 and 2013-2015. The new estimates are bounded by CloudSat precipitation rates with and without adjustment for the unmeasured near surface precipitation. GPM products significantly underestimate Antarctic precipitation rate, but capture spatial variability that is valuable for bias-adjustment. We find variable performance between products at basin scale, suggesting that an in-depth regional study of precipitation rates is necessary.en_US
dc.description.sponsorshipDistrict of Columbia Space Grant Consortiumen_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.rights© 2020 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subjectprecipitationen_US
dc.subjectremote sensingen_US
dc.subjectGRACEen_US
dc.subjectantarcticaen_US
dc.subjectGPMen_US
dc.subjectCloudSaten_US
dc.titleComparative analysis of snowfall accumulation over Antarctica in light of Ice discharge and gravity observations from spaceen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Hydrol & Atmospher Scien_US
dc.contributor.departmentUniv Arizona, Dept Geoscien_US
dc.identifier.journalENVIRONMENTAL RESEARCH LETTERSen_US
dc.description.noteOpen access articleen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleEnvironmental Research Letters
dc.source.volume15
dc.source.issue10
dc.source.beginpage104010
refterms.dateFOA2021-01-09T03:10:31Z


Files in this item

Thumbnail
Name:
Behrangi_2020_Environ._Res._Le ...
Size:
1.444Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

© 2020 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
Except where otherwise noted, this item's license is described as © 2020 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.