摘要
基于福建省17个国家气象观测基准站1980—2019年的逐日降水数据和ENSO指数,分析了福建省1980—2019年期间的降水变化的时空格局及其对ENSO的响应特征。结果表明:1)1980—2019年期间,福建省年降水量呈不显著的增加趋势(2.78 mm·a^(-1),P>0.05),夏季降水量的增幅最大,达5.75 mm·a^(-1)(P<0.05),此外,夏季的多年平均降水量为615.31 mm,占年降水量的37%;2)福建省年降水量与ENSO指数的相关程度呈现“西强东弱”的格局;1990s中后期以来年降水量受ENSO事件的影响较明显,降水对ENSO指数的响应存在一定的滞后;3)夏、冬季降水与ENSO为正相关,均与强ENSO暖事件有密切联系。研究结果深化了对福建省降水变化特征的认识,为科学应对福建省洪旱灾害提供了理论依据。
Based on the daily precipitation data and ENSO indices from 17 national meteorological observation benchmark stations in Fujian Province during 1980—2019,the spatial and temporal patterns of precipitation variability and its response characteristics to ENSO in Fujian Province were analyzed.The results showed that,1)annual precipitation in Fujian Province showed a nonsignificant increasing trend(2.78 mm·a^(-1),P>0.05)during 1980—2019,with the largest increase of 5.75 mm·a^(-1) in summer(P<0.05),while the multi-year average precipitation in summer was 615.31 mm,accounting for 37%of the annual precipitation.2)The correlation between annual precipitation in Fujian Province and the correlation between annual precipitation and ENSO index in Fujian Province both show a pattern of“strong in the west and weak in the east”.The annual precipitation has been influenced by ENSO events since the mid-late 1990s,and there is a certain lag in the response of precipitation to ENSO index.3)There are more years with positive correlation between summer and winter precipitation and ENSO,and all of them are closely related to strong ENSO warm events.The results deepen the understanding of precipitation variability characteristics in Fujian Province and provide a theoretical basis for scientific responses to flood and drought disasters in Fujian Province.
作者
林靖
刘恭祥
邓海军
LIN Jing;LIU Gongxiang;DENG Haijun(Institute of Geography,Fujian Normal University,Fuzhou 350117,China;National Demonstration Center for Experimental Geography Education,Fujian Normal University,Fuzhou 350117,China;School of Geographical Sciences,School of Carbon Neutrality Future Technology,Fujian Normal University,Fuzhou 350117,China;Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters,Fujian Normal University,Fuzhou 350117,China;State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province,Fujian Normal University,Fuzhou 350117,China;Fujian Provincial Key Laboratory for Plant Eco-physiology,Fujian Normal University,Fuzhou 350117,China)
出处
《亚热带资源与环境学报》
2023年第3期71-78,126,共9页
Journal of Subtropical Resources and Environment
基金
国家自然科学基金项目(U22A20554)
福建省公益类科研院所专项(2022R1002005)。
关键词
降水量
时空格局
ENSO
相关分析
福建省
precipitation
spatiotemporal pattern
ENSO
correlation analysis
Fujian Province
