Hydroclimatology of the Mississippi River Basin

McCabe, Gregory J.; Wolock, David M.

doi:10.1111/1752-1688.12749

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Hydroclimatology of the Mississippi River Basin

2019
By McCabe, Gregory J. ; Wolock, David M.
Source: JAWRA Journal of the American Water Resources Association, 55(4), 1053-1064

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Journal Title:

JAWRA Journal of the American Water Resources Association
Personal Author:

McCabe, Gregory J. ; Wolock, David M.

McCabe, Gregory J. ; Wolock, David M. Less -
NOAA Program & Office:

NOAA General Documents
Description:

Model estimated monthly water balance (WB) components (i.e., potential evapotranspiration, actual evapotranspiration, and runoff [R]) for 848 United States (U.S.) Geological Survey 8‐digit hydrologic units located in the Mississippi River Basin (MRB) are used to examine the temporal and spatial variability of the MRB WB for water years 1901 through 2014. Results indicate the MRB can be divided into nine subregions with similar temporal variability in R. The WB analyses indicated ~79% of total water‐year MRB runoff is generated by four of the nine subregions and most of the R in the basin is derived from surplus (S) water during the months of December through May. Furthermore, the analyses showed temporal variability in S is largely controlled by the occurrence of negative atmospheric pressure anomalies over the western U.S. and positive atmospheric pressure anomalies over the eastern U.S. coast. This combination of atmospheric pressure anomalies results in an anomalous flow of moist air from the Gulf of Mexico into the MRB. In the context of paleo‐climate reconstructions of the Palmer Drought Severity Index, since about 1900 the MRB has experienced wetter conditions than were experienced during the previous 500 years.
Keywords:

[+]

Earth-Surface Processes Ecology Water Science And Technology
Source:

JAWRA Journal of the American Water Resources Association, 55(4), 1053-1064
DOI:

https://doi.org/10.1111/1752-1688.12749
ISSN:

1093-474X;1752-1688;
Format:

PDF
Publisher:

Wiley
Document Type:

Journal Article
Rights Information:

Accepted Manuscript
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Library
Main Document Checksum:

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urn:sha256:9bfecb5858732ad3ef27815d8f0952f142965b17811e458de8e46a4566fbc3a2
Download URL:

https://repository.library.noaa.gov/view/noaa/57041/noaa_57041_DS1.pdf
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[PDF-474.52 KB]