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The role of the ENSO cycle in the modulation of moisture transport from major oceanic moisture sources
Author(s) -
Castillo Rodrigo,
Nieto Raquel,
Drumond Anita,
Gimeno Luis
Publication year - 2014
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1002/2013wr013900
Subject(s) - climatology , moisture , environmental science , precipitation , monsoon , el niño southern oscillation , water cycle , annual cycle , subtropics , period (music) , oceanography , atmospheric sciences , geology , geography , meteorology , ecology , physics , fishery , acoustics , biology
The influence that the evolution of the ENSO cycle has on the moisture transport from the major oceanic moisture sources is investigated using a sophisticated Lagrangian approach informed by ERA‐interim data, together with composites of ENSO phases. When maintaining the sources of moisture defined for the climatological period 1980–2012, the variations in the moisture sinks associated with each of these evaporative sources throughout the ENSO cycle reproduce the known patterns of variations of the large‐scale atmospheric and precipitation systems over this cycle. Such variations include those observed in rainfall over the equatorial Pacific, in the major Summer monsoon systems, and in subtropical rainfall. When the areas of the sources were redefined according to the phase of ENSO, most of them remained stationary over the period of interest, nevertheless four of them showed notable differences in terms of their extents, namely the South Pacific and the Coral Sea (Pacific Ocean); the Mexican Caribbean (Atlantic), and the Arabian Sea (Indian).