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Basin mode of Indian Ocean sea surface temperature and Northern Hemisphere circumglobal teleconnection
Author(s) -
Yang Jianling,
Liu Qinyu,
Liu Zhengyu,
Wu Lixin,
Huang Fei
Publication year - 2009
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 - 10.1029/2009gl039559
Subject(s) - teleconnection , sea surface temperature , climatology , geology , northern hemisphere , monsoon , anomaly (physics) , atmospheric circulation , atmosphere (unit) , middle latitudes , southern hemisphere , precipitation , mode (computer interface) , atmospheric wave , structural basin , atmospheric sciences , oceanography , environmental science , gravity wave , el niño southern oscillation , meteorology , geography , wave propagation , paleontology , computer science , operating system , physics , quantum mechanics , condensed matter physics
Observational analysis and model experiments show that the sea surface temperature anomaly associated with the Indian Ocean Basin mode (IOBM), which persists from spring to summer, can generate significant circumglobal teleconnection (CGT) in the Northern Hemisphere summer midlatitude atmosphere. A warm IOBM can induce a new atmospheric heating source in the south Asia through a positive feedback. An enhanced Indian summer monsoon through the increased precipitation in the south Asia induces an atmospheric heating source there. This new atmospheric heating source generates an anomalous high to its northwest over the western‐central Asia, which in turn generates an eastward downstream atmospheric wave train, forming the CGT.