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Weakening relationship between East Asian winter monsoon and ENSO after mid-1970s.
- Source :
- Chinese Science Bulletin; Sep2012, Vol. 57 Issue 27, p3535-3540, 6p
- Publication Year :
- 2012
-
Abstract
- The East Asian winter monsoon (EAWM) is characterized by the frequent cold surges and associated closely with the Siberia High, East Asian Trough, and high-level westerly jet stream. The ENSO cycle can modulate the EAWM since it has co-variability with the sea surface temperature over the Indo-Western-Pacific which can tune the land-sea thermal contrast for the EAWM. This paper, by analyzing the EAWM, ENSO, and associated atmosphere-ocean variability, documents the weakening of the EAWM-ENSO relationship after the 1970s. The significant out-of-phase inter-relationship is found to be diminished after the 1970s. Further study in this work suggests that the weakened co-variability of the tropical Indo-Western-Pacific climate associated with ENSO after the 1970s is partly responsible for the weakened inter-relationship. Meanwhile, the reduced EAWM interannual variability and northward retreat of the EAWM-associated climate variability are favorable to the weakened ENSO-EAWM connection. [ABSTRACT FROM AUTHOR]
- Subjects :
- OCEAN temperature
WINTER
CLIMATE change
JET streams
SOUTHERN oscillation
EL Nino
Subjects
Details
- Language :
- English
- ISSN :
- 10016538
- Volume :
- 57
- Issue :
- 27
- Database :
- Complementary Index
- Journal :
- Chinese Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 79721938
- Full Text :
- https://doi.org/10.1007/s11434-012-5285-x