Irrigation and warming drive the decreases in surface albedo over High Mountain Asia

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dc.contributor.authorMaina, Fadji
dc.contributor.authorKumar, Sujay V.
dc.contributor.authorGangodagamage, Chandana
dc.date.accessioned2022-10-21T16:06:27Z
dc.date.available2022-10-21T16:06:27Z
dc.date.issued2022-09-28
dc.description.abstractHuman and climate induced land surface changes resulting from irrigation, snow cover decreases, and greening impact the surface albedo over High Mountain Asia (HMA). Here we use a partial information decomposition approach and remote sensing data to quantify the efects of the changes in leaf area index, soil moisture, and snow cover on the surface albedo in HMA, home to over a billion people, from 2003 to 2020. The study establishes strong evidence of anthropogenic agricultural water use over irrigated lands (e.g., Ganges–Brahmaputra) which causes the highest surface albedo decreases (≤ 1%/year). Greening and decreased snow cover from warming also drive changes in visible and nearinfrared surface albedo in diferent areas of HMA. The signifcant role of irrigation and greening in infuencing albedo suggests the potential of a positive feedback cycle where albedo decreases lead to increased evaporative demand and increased stress on water resources.en_US
dc.description.sponsorshipThis research was supported by the grant from the National Aeronautics and Space Administration High Mountain Asia program (19-HMA19-0012). Computing was supported by the resources at the NASA Center for Climate Simulation.en_US
dc.description.urihttps://www.nature.com/articles/s41598-022-20564-2en_US
dc.format.extent12 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2lk9g-a4zr
dc.identifier.citationMaina, F.Z., Kumar, S.V. & Gangodagamage, C. Irrigation and warming drive the decreases in surface albedo over High Mountain Asia. Sci Rep 12, 16163 (2022). https://doi.org/10.1038/s41598-022-20564-2en_US
dc.identifier.urihttps://doi.org/10.1038/s41598-022-20564-2
dc.identifier.urihttp://hdl.handle.net/11603/26218
dc.language.isoen_USen_US
dc.publisherNatureen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleIrrigation and warming drive the decreases in surface albedo over High Mountain Asiaen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-3126-4343en_US

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