气象学报（英文版）2021，Vol.35Issue(3)：428-443,中插1-中插5,21.
热带强火山喷发对全球极端温度和极端降水影响的数值模拟研究
Influence of Strong Tropical Volcanic Eruptions on Daily Temperature and Precipitation Extremes Across the Globe
摘要
Abstract
This study investigates the influences of strong tropical volcanic eruptions (SVEs) on daily temperature and precip-itation extreme events using long-term simulations from the Hadley Centre Coupled Model version 3 (HadCM3) and the Community Earth System Model version 1.1 (CESM1). The results indicate that the occurrences of daily hot ex-tremes and daily heavy precipitation extremes decrease over most parts of the world in the peak forcing years of SVEs. Due to the volcanic cooling effect, the average probability of daily hot extremes decreases by approximately 50％ across the globe. The decrease in intensity is stronger for midlatitude land regions and tropical South America. In contrast, daily cold extremes occur more frequently over most parts of continental regions. Globally, a cold ex-treme event expected once every 3 years under non-volcanic conditions can be expected every 1.5 years on average in the peak forcing years. Overall, the SVE-induced cooling effect plays a dominant role in regulating daily cold and hot extremes. Over high-latitude Eurasian regions, in contrast to other continental regions, the probability and intens-ity of daily cold extremes decrease due to an SVE-strengthened polar vortex and the associated temperature advec-tion anomalies. With regard to daily heavy precipitation extremes, the probability and intensity both decrease over most monsoon areas. Further analysis suggests that the reduced probability and intensity of daily heavy precipitation extremes are mainly due to the SVE-induced global decrease in the water-holding capacity.关键词
strong tropical volcanic eruption (SVE)/daily extremes/temperature/precipitationKey words
strong tropical volcanic eruption (SVE)/daily extremes/temperature/precipitation引用本文复制引用
王涛,缪家鹏,王会军,孙建奇..热带强火山喷发对全球极端温度和极端降水影响的数值模拟研究[J].气象学报（英文版）,2021,35(3):428-443,中插1-中插5,21.基金项目
Supported by the National Key Research and Development Program of China(2016YFA0600701),National Natural Science Founda-tion of China(41822502 and 41661144005),and Joint Programming Initiative Climate—Belmont Forum Project InterDec. （2016YFA0600701）
