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

西太平洋暖池为全球大气提供了主要的水汽和能量来源，是厄尔尼诺/南方涛动（ENSO）系统的“活动中心”，其信号渗透到全球年际气候变率记录中。ENSO极端温暖起源于该地区，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。该奖项支持一个项目，该项目将利用长寿珊瑚骨骼的地球化学记录，重建赤道西太平洋海洋/大气的多世纪变化记录。这项研究将把有限的记录扩展到ENSO，以跨越过去几个世纪，沿着赤道样带从日期变更线区域到西太平洋暖池的中心。由此产生的记录将对ENSO的长期时空变异性及其与西太平洋暖池变化和外部强迫（包括对小冰期的区域响应）的关系提供新的认识。拟议的古气候研究将把TOGA/COARE观测结果放在一个长期的角度，并描绘出模式必须力求模拟的自然变率的范围。

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.