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ENSO and West Pacific Warm Pool Climate Variability over the Last Three Centuries

过去三个世纪的 ENSO 和西太平洋暖池气候变化

基本信息

批准号：
1103430
负责人：
Terrence Quinn
金额：
$ 28.81万
依托单位：
University of Texas at Austin
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-06-01 至 2013-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1103430&HistoricalAwards=false
关键词：
ENSO West Pacific Warm Pool

项目摘要

The Western Pacific Warm Pool (WPWP) is a component of the largest mode of inter-annual climate variability on the planet, El-Niño Southern-Oscillation (ENSO). Despite the importance of climate variability in the WPWP, the climatology of the region over the last three centuries is largely unknown. This project, involving researchers from the University of Texas at Austin, aims to produce the first sub-annually resolved, multi-century record of ENSO and WPWP climate variability utilizing corals from the Western Province, Solomon Islands. By measuring &#948;18O in three cores of the slow-growing coral species Diploastrea heliopora, the researchers seek to generate a record of sea surface temperature and hydrologic variability spanning the last three centuries in the WPWP. These records will enable assessment of changes in WPWP and ENSO variability from pre-industrial through modern times. In terms of broader impact, funding supports education and training of a graduate student and an undergraduate student. The research will also develop a potentially important, high-resolution data series that would provide an observational basis for relating WPWP changes to global climate conditions and may find changes in the mean state of the WPWP and ENSO as a result of anthropogenic climate forcing in the modern era.

西太平洋暖池（WPWP）是地球上最大的年际气候变率模式厄尔尼诺南方涛动（ENSO）的一个组成部分。尽管气候变率在WPWP中很重要，但该地区过去三个世纪的气候学在很大程度上是未知的。该项目涉及得克萨斯大学奥斯汀分校的研究人员，目的是利用所罗门群岛西部省的珊瑚制作第一个亚年度分辨率的ENSO和WPWP气候变异性的多世纪记录。通过测量&#948;在生长缓慢的珊瑚物种Diploastrea heliopora的三个核心中，研究人员试图在WPWP中生成过去三个世纪的海面温度和水文变化记录。这些记录将使人们能够评估从工业化前到现代的西太平洋水压力和厄尔尼诺/南方涛动变化的变化。在更广泛的影响方面，资金支持一名研究生和一名本科生的教育和培训。这项研究还将开发一个潜在的重要的高分辨率数据系列，为将WPWP的变化与全球气候条件联系起来提供观测基础，并可能发现现代人为气候强迫造成的WPWP和ENSO平均状态的变化。