The Record of ENSO in the Warm Pool of the Western Pacific: Multi-century Reconstructions from the Geochemistry of Long-lived Corals

ATM-9311858 Cole，J.E.标题：西太平洋暖池中的ENSO记录：从长寿命珊瑚的地球化学重建数世纪西太平洋暖池为全球大气提供了主要的水汽和能量来源，也是厄尔尼诺/南方涛动系统的“活动中心”，其信号渗透到全球气候年际变化的记录中。ENSO暖极值起源于该地区，与ENSO相关的西太平洋对流异常将气候变率传播到整个热带地区和世界各地。该奖项支持一个项目，该项目将利用来自长寿珊瑚骨骼的地球化学记录，重建赤道西太平洋海洋/大气中几个世纪以来的变异性记录。这项研究将把有限的记录延伸到ENSO，跨越过去几个世纪，沿着赤道横断面从日期线区域进入西太平洋暖池的中心。由此产生的记录将对ENSO的长期时空变化及其与西太平洋暖池变化和外部强迫的关系，包括对小冰期的区域响应提供新的理解。拟议的古气候研究将把TOGA/COARE的观测放在一个长期的角度，并描绘出模型必须以模拟为目标的自然变化范围。

Abstract ATM-9311858 Cole, J.E. Title: The Record of ENSO in the Warm Pool of the Western Pacific: Multi-century Reconstruction from the Geochemistry of Long-lived Corals The western Pacific warm pool provides a major source of water vapor and energy to the global atmosphere and is a "center of action" for the El Nino/Southern Oscillation (ENSO) system, whose signal permeates the global record of interannual climate variability. ENSO warm extremes originate from the region, and the western Pacific convection anomalies associated with ENSO propagate climate variability throughout the tropics and the world. This award supports a project that will reconstruct multi-century records of variability in the ocean/atmosphere of the western equatorial Pacific, using geochemical records from the skeletons of long-lived corals. The study will extend the limited record to ENSO to span the past few centuries along an equatorial transect from the region of the date line into the heart of the western Pacific warm pool. The resulting records will provide a new understanding of long-term temporal and spatial variability of ENSO and its relation to variations in the western Pacific warm pool and to external forcings, including the regional response to the Little Ice Age. The proposed paleoclimatic study will place the TOGA/COARE observations in a long-term perspective and delineating the range of natural variability that models must aim to simulate.