Sangam: A Confluence of Knowledge Streams

Uncertainty in modeled and observed climate change impacts on American Midwest hydrology

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dc.contributor Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
dc.contributor Fu, Xiaojing
dc.contributor Eltahir, Elfatih A. B.
dc.creator Winter, Jonathan M.
dc.creator Yeh, Pat J.-F.
dc.creator Fu, Xiaojing
dc.creator Eltahir, Elfatih A. B.
dc.date 2017-06-27T14:11:33Z
dc.date 2017-06-27T14:11:33Z
dc.date 2015-04
dc.date 2014-06
dc.date.accessioned 2023-03-01T18:08:13Z
dc.date.available 2023-03-01T18:08:13Z
dc.identifier 0043-1397
dc.identifier http://hdl.handle.net/1721.1/110300
dc.identifier Winter, Jonathan M. et al. “Uncertainty in Modeled and Observed Climate Change Impacts on American Midwest Hydrology: Climate Change Impacts on American Midwest Hydrology.” Water Resources Research 51.5 (2015): 3635–3646. © 2015 American Geophysical Union
dc.identifier https://orcid.org/0000-0001-7120-704X
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278887
dc.description An important potential consequence of climate change is the modification of the water cycle in agricultural areas, such as the American Midwest. Soil moisture is the integrand of the water cycle, reflecting dynamics of precipitation, evapotranspiration, and runoff in space and time, and a key determinant of yield. Here we present projected changes in the hydrologic cycle over a representative area of the American Midwest from regional climate model experiments that sample a range of model configurations. While significant summer soil moisture drying is predicted in some ensemble members, others predict soil moisture wetting, with the sign of soil moisture response strongly influenced by choice of boundary conditions. To resolve the contradictory predictions of soil moisture across ensemble members, we assess an extensive and unique observational data set of the water budget in Illinois. No statistically significant monotonic trends are found in observed soil moisture, precipitation, streamflow, groundwater level, or 2 m air temperature over a recent 26 year period (soil moisture 25 years). Based on this analysis of model simulations and observations, we conclude that the sign of climate change impacts on the regional hydrology of the American Midwest remains uncertain.
dc.description National Science Foundation (U.S.)
dc.format application/pdf
dc.language en_US
dc.publisher American Geophysical Union
dc.relation http://dx.doi.org/10.1002/2014wr016056
dc.relation Water Resources Research
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.source MIT Web Domain
dc.title Uncertainty in modeled and observed climate change impacts on American Midwest hydrology
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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