Assessing the climate‐scale variability of atmospheric rivers affecting western North America

Gershunov, Alexander; Shulgina, Tamara; Ralph, F. Martin; Lavers, David A.; Rutz, Jonathan J.

doi:10.1002/2017gl074175

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Assessing the climate‐scale variability of atmospheric rivers affecting western North America

2017
By Gershunov, Alexander ; Shulgina, Tamara ; Ralph, F. Martin ; ...
Source: Geophysical Research Letters, 44(15), 7900-7908

[PDF-1.13 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Gershunov, Alexander ; Shulgina, Tamara ; Ralph, F. Martin ; Lavers, David A. ; Rutz, Jonathan J.

Gershunov, Alexander ; Shulgina, Tamara ; Ralph, F. Martin ; Lavers, David A. ; Rutz, Jonathan J. Less -
NOAA Program & Office:

NWS (National Weather Service) ; WR (Western Region)

NWS (National Weather Service) ; WR (Western Region) Less -
Description:

A new method for automatic detection of atmospheric rivers (ARs) is developed and applied to an atmospheric reanalysis, yielding an extensive catalog of ARs land-falling along the west coast of NorthAmerica during 1948 –2017. This catalog provides a large array of variables that can be used to examine AR cases and their climate-scale variability in exceptional detail. The new record of AR activity, as presented, validated and examined here, provides a perspective on the seasonal cycle and the interannual-interdecadalvariability of AR activity affecting the hydroclimate of western North America. Importantly, AR intensity does not exactly follow the climatological pattern of AR frequency. Strong links to hydroclimate are demonstrated using a high-resolution precipitation data set. We describe the seasonal progression of ARactivity and diagnose linkages with climate variability expressed in Paci ﬁc sea surface temperatures, revealing links to Paci ﬁc decadal variability, recent regional anomalies, as well as a generally rising trend in
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 44(15), 7900-7908
DOI:

https://doi.org/10.1002/2017gl074175
ISSN:

0094-8276;1944-8007;
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PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
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Library
Main Document Checksum:

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urn:sha256:04970915c623b7e5b0dec969c6d48214502c641ec95b305c0e4f95bffcba47b6
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https://repository.library.noaa.gov/view/noaa/53233/noaa_53233_DS1.pdf
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