灾害学2024，Vol.39Issue(2)：12-20,9.DOI:10.3969/j.issn.1000-811X.2024.02.003
厄尔尼诺事件对中国沿海地区水汽变化周期的影响
The Impact of El Niño Events on the Cycle of Precipitable Water Vapor Changes in China's Coastal Areas
摘要
Abstract
Frequent occurrence of extreme weather could be led by El Niño event.There are many coastal cit-ies in China,and the cities are with different climate types distributed.An analysis on the impact of EI Nino events on precipitable water vapor(PWV)changes in coastal areas of China and whether there are spatial differences is done.Based on GNSS PWV time series of CMONOC in Chinas coastal areas,and based on the El Niño event(IEP,ICP)index,and by using Fast Fourier Transform(FFT)and Wavelet Transform(WT)methods,the GNSS PWV time series change analysis is carried out from the frequency domain and time domain to analyze the impact of eastern and central type El Nino events on the PWV change in China's coastal areas.It is found that the occurrence of GNSS PWV Outlier corresponds to the El Niño event in the corresponding period.The correlation between eastern type El Niño(IEP)and PWV at most GNSS stations is positive;the correlation between the central type index(ICP)and GNSS PWV is negative.The impact of El Niño events on the cycle of PWV changes are relatively small on a daily period.In the 5d and 10d cycles,the PWV cycle under the influence of eastern and central El Niño e-vents are smaller than the PWV cycle during normal periods.关键词
水汽/厄尔尼诺/GNSS/中国沿海地区Key words
precipitable water vapor/El Niño/GNSS/coastal areas of China分类
资源环境引用本文复制引用
王勇,张经纬,刘严萍,尚军..厄尔尼诺事件对中国沿海地区水汽变化周期的影响[J].灾害学,2024,39(2):12-20,9.基金项目
天津市科技计划项目"面向青少年群体的北斗卫星导航系统专题科普宣传(c)"(21KPHDRC00070) （c）
天津市教委科研计划项目"天津北部山区地表形变时空变化与机理分析"(2021ZD001) （2021ZD001）
