Journal
ADVANCES IN ATMOSPHERIC SCIENCES
Volume 39, Issue 2, Pages 249-259Publisher
SCIENCE PRESS
DOI: 10.1007/s00376-021-1171-2
Keywords
tropical cyclone; East Asia-Pacific pattern; teleconnection; western North Pacific; summer
Categories
Funding
- National Natural Science Foundation of China [41721004]
Ask authors/readers for more resources
The study revealed that tropical cyclones in the western North Pacific contribute significantly to the East Asia-Pacific teleconnection pattern during summer, enhancing various atmospheric anomalies in the region.
The contribution of tropical cyclones (TCs) to the East Asia-Pacific (EAP) teleconnection pattern during summer was investigated using the best track data of the Joint Typhoon Warning Center and NCEP-2 reanalysis datasets from 1979 to 2018. The results showed that the TCs over the western North Pacific (WNP) correspond to a strengthened EAP pattern: During the summers of strong convection over the tropical WNP, TC days correspond to a stronger cyclonic circulation anomaly over the WNP in the lower troposphere, an enhanced seesaw pattern of negative and positive geopotential height anomalies over the subtropical WNP and midlatitude East Asia in the middle troposphere, and a more northward shift of the East Asian westerly jet in the upper troposphere. Further analyses indicated that two types of TCs with distinctly different tracks, i.e., westward-moving TCs and northward-moving TCs, both favor the EAP pattern. The present results imply that TCs over the WNP, as extreme weather, can contribute significantly to summer-mean climate anomalies over the WNP and East Asia.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available