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Genesis, Pathways, and Terminations of Intense Global Water Vapor Transport in Association with Large‐Scale Climate Patterns
Author(s) -
Sellars S. L.,
Kawzenuk B.,
Nguyen P.,
Ralph F. M.,
Sorooshian S.
Publication year - 2017
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2017gl075495
Subject(s) - climatology , northern hemisphere , southern hemisphere , middle latitudes , pacific decadal oscillation , water vapor , arctic , el niño southern oscillation , annual cycle , geography , environmental science , geology , meteorology , oceanography
The CONNected objECT (CONNECT) algorithm is applied to global Integrated Water Vapor Transport data from the NASA's Modern‐Era Retrospective Analysis for Research and Applications – Version 2 reanalysis product for the period of 1980 to 2016. The algorithm generates life‐cycle records in time and space evolving strong vapor transport events. We show five regions, located in the midlatitudes, where events typically exist (off the coast of the southeast United States, eastern China, eastern South America, off the southern tip of South Africa, and in the southeastern Pacific Ocean). Global statistics show distinct genesis and termination regions and global seasonal peak frequency during Northern Hemisphere late fall/winter and Southern Hemisphere winter. In addition, the event frequency and geographical location are shown to be modulated by the Arctic Oscillation, Pacific North American Pattern, and the quasi‐biennial oscillation. Moreover, a positive linear trend in the annual number of objects is reported, increasing by 3.58 objects year‐over‐year.