Open AccessDiurnal cycle of precipitation over the eastern Indian Ocean off Sumatra Island during different phases of Indian Ocean Dipole
Author(s) -
Fujita Mikiko,
Takahashi Hiroshi G.,
Hara Masayuki
Publication year - 2013
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl2.432
Subject(s) - precipitation , climatology , indian ocean dipole , evening , morning , diurnal cycle , subtropical indian ocean dipole , environmental science , indian ocean , atmospheric sciences , sea surface temperature , oceanography , geology , geography , meteorology , physics , astronomy
Observed difference in diurnal cycle of precipitation over the eastern Indian Ocean between positive and negative Indian Ocean Dipole ( IOD ) phases was investigated using a regional model. During the negative IOD phase, prominent precipitation peak was over the land during evening in both observation and model, while precipitation often appeared over the ocean during early morning. In the positive IOD phase, precipitation peak was shifted to the northern area where sea surface temperature was warm. The amount of precipitation in the southern area during the negative phase was more than three times larger than that in the positive phase.