Premium
Influence of the intensification of the major oceanic moisture sources on continental precipitation
Author(s) -
Gimeno Luis,
Nieto Raquel,
Drumond Anita,
Castillo Rodrigo,
Trigo Ricardo
Publication year - 2013
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/grl.50338
Subject(s) - precipitation , climatology , boreal , climate change , moisture , environmental science , climate model , oceanography , geology , geography , meteorology , paleontology
In this study, we address two key issues in the hydrological cycle that have remained elusive: 1) to what extent can we expect climate change to affect the transport of moisture? and, in particular, 2) how will the changes in the sources’ intensity (that is, more evaporation) affect the distribution of continental precipitation? This was achieved using a multimodel ensemble that allowed delimiting those oceanic areas where climate change will likely lead to an increase in evaporation ( E ) minus precipitation ( P ). Finally, a sophisticated Lagrangian model was used to identify which continental regions will be affected by changes in precipitation ( E − P < 0) originating in each oceanic moisture source. We find that in boreal winter, wide sectors of Europe, Asia, Middle East, South America, and southern Africa are affected, but North America emerges as the most affected continental region. In austral winter, the largest changes are confined to northern and Central America.