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中国南方降水δ18O年际变化响应ENSO机理的再分析

王权 袁莎悦 翟秀敏 夏程尉 李毅 蓝江湖

王 权,袁莎悦,翟秀敏,等.中国南方降水δ18O年际变化响应ENSO机理的再分析[J].中国岩溶,2021,40(6):914-919. doi: 10.11932/karst20210602
引用本文: 王 权,袁莎悦,翟秀敏,等.中国南方降水δ18O年际变化响应ENSO机理的再分析[J].中国岩溶,2021,40(6):914-919. doi: 10.11932/karst20210602
WANG Quan,YUAN Shayue,ZHAI Xiumin,et al.Reanalysis of interannual variability of precipitation δ18O in southern China in response to ENSO[J].Carsologica Sinica,2021,40(06):914-919. doi: 10.11932/karst20210602
Citation: WANG Quan,YUAN Shayue,ZHAI Xiumin,et al.Reanalysis of interannual variability of precipitation δ18O in southern China in response to ENSO[J].Carsologica Sinica,2021,40(06):914-919. doi: 10.11932/karst20210602

中国南方降水δ18O年际变化响应ENSO机理的再分析

doi: 10.11932/karst20210602
基金项目: 

黄土与第四纪地质国家重点实验室开放基金 SKLLQG1922

重庆市教委科学技术研究项目 KJQN201900536

重庆市自然科学基金面上项目 cstc2020jcyj-msxmX0598

国家自然科学基金青年项目 42002200

中国地质科学院岩溶地质研究所所长基金 2014005, 2014034, 2016011

中国地质调查项目-西南岩溶区碳酸盐岩地质遗迹调查与评价 DD20190672

详细信息
    作者简介:

    王权(1991-),男,讲师,主要从事自然地理学研究。E-mail:wangpowerful@163.com

    通讯作者:

    翟秀敏(1985-),女,助理研究员,主要从事岩溶地貌与石笋古气候研究。E-mail:karstmin@126.com

  • 中图分类号: P732

Reanalysis of interannual variability of precipitation δ18O in southern China in response to ENSO

Funds: 

 SKLLQG1922

 KJQN201900536

 cstc2020jcyj-msxmX0598

 42002200

 2014005, 2014034, 2016011

 DD20190672

  • 摘要: 中国南方石笋δ18O记录已成为重建过去季风变化历史的重要载体,然而对石笋δ18O记录的气候解译目前仍存在争议。本文基于模拟数据和气象观测数据建立了1979-2016年中国南方16个主要城市的降水δ18O年际变化序列,并利用主成分分析方法提取了这些δ18O序列的第一主成分。该主成分序列与海洋尼诺指数总体上呈现出显著正相关,表明厄尔尼诺-南方涛动(ENSO)对中国南方降水δ18O年际变化具有显著影响。进一步分析表明,ENSO主要通过控制孟加拉湾和南海等水汽上游地区对流强度和西太平洋副热带高压强度来对中国南方降水δ18O施加影响,但水汽上游地区对流强度的作用可能更强。此外,降水δ18O与ENSO在不同时段的相关性并非稳定,这可能影响石笋δ18O对ENSO历史重建的准确性。

     

  • 图  1  中国南方16个城市气象站点分布及具有ENSO信号的石笋记录所在洞穴位置

    Figure  1.  Distribution of meteorological stations of 16 cities and cave sites with stalagmite records showing ENSO signals

    图  2  图1中各城市1979-2016年降水δ18O序列

    Figure  2.  Precipitation δ18O variability of cities shown in Fig.1 from 1979 to 2016

    图  3  海洋尼诺指数与中国南方降水δ18O第一主成分对比

    Figure  3.  Comparison of the Ocean Niño Index and the first principal component of precipitation δ18O in southern China

    图  4  中国南方降水δ18O第一主成分(虚线)与西太副高各相关指数以及水汽上游地区射出长波辐射对比

    Figure  4.  Comparison of the first principal component of precipitation δ18O in southern China (dashed lines), indices of west Pacific subtropical high and Outgoing Longwave Radiation over the primary moisture regions

    图  5  海洋尼诺指数与降水δ18O第一主成分(a)、水汽上游地区向外长波辐射(b)和西太副高面积指数(c)11年滑动相关系数对比

    Figure  5.  Comparison of running correlations between ONI and the first principal component of precipitation δ18O (a), running correlations between ONI and the Outgoing Longwave Radiation over the primary moisture regions (b) and running correlations between ONI and the Area Index of the west Pacific subtropical high (c) for 11-year. ONI = Ocean Niño Index

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出版历程
  • 收稿日期:  2021-04-30
  • 刊出日期:  2021-12-25

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