The synergetic effect of Indian Ocean Dipole (IOD) and El Niño‐Southern Oscillation on the particulate matter (PM2.5) concentration in Guangdong for October–November–December 1980–2016 has been investigated. Results indicate that, during a ty...
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https://www.riss.kr/link?id=O106504978
2021년
-
0899-8418
1097-0088
SCI;SCIE;SCOPUS
학술저널
3615-3627 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
The synergetic effect of Indian Ocean Dipole (IOD) and El Niño‐Southern Oscillation on the particulate matter (PM2.5) concentration in Guangdong for October–November–December 1980–2016 has been investigated. Results indicate that, during a ty...
The synergetic effect of Indian Ocean Dipole (IOD) and El Niño‐Southern Oscillation on the particulate matter (PM2.5) concentration in Guangdong for October–November–December 1980–2016 has been investigated. Results indicate that, during a typical polluted episode, Guangdong is usually under the influence of a high‐pressure system behind the cold front, which is characterized by weakened southwesterly, subsidence/divergence, and stable atmospheric conditions. Persistent low values of PM2.5 are found to prevail during the years when concurrent IOD positive phase and El Niño occur. However, separate occurrence of El Niño and the positive phase of IOD had only marginal effect on PM2.5. The remarkable synergetic effect of El Niño and the positive phase of IOD is caused by a significantly strengthened ascending motion associated with anomalous southwesterly, which facilitates the transport of abundant moisture, increasing rainfall and thus suppressing PM2.5 pollution in Guangdong.
The synergetic effect of the positive phase of IOD and El Niño occur suppresses PM2.5 pollution in Guangdong by sufficient rainfall associated with strengthened ascending motion.