Chronology of Multiple Time-Scale Climate Events in the Americas; Yucatan, Mexico; March 10-12, 2005

该奖项有助于支持在尤卡坦州霍博尼尔的尤卡坦大学野外站举行的会议，题为“美洲多个时间尺度气候事件的年表”。讲习班的目的是召集一个跨学科的学者小组，讨论与了解过去1500年来该地区干旱直接相关的信息的范围和质量。研讨会将从文化、历史和科学证据及其影响的角度审视干旱。组织者的目标是：-以尽可能高的准确度和精度确定美洲极端年度、十年一次和几十年一次的干旱的历史。评估这些干旱事件在多个历史和古气候档案中的记录。-根据来自美洲的仪器前和定性（历史）文献信息，完善厄尔尼诺/南方涛动（ENSO）事件的年表。在高分辨率区域古气候记录（如来自树木年轮和冰芯的记录）的背景下评估ENSO事件的仪器前记录。-检查ENSO强度和频率的记录，以评估ENSO系统的年代际变化，并了解ENSO低频变化如何影响美洲社会。-探索使用高分辨率古气候记录的方法，以更好地定义可能与ENSO变率相关的持续干旱和洪水时期。-强调并讨论自欧洲人到达美洲以来，可能与ENSO变异性有合理联系的美洲历史时期可能产生的重大社会影响。

This award helps support a conference at the University of Yucatan Field Station in Hobonil, Yucatan entitled, "Chronology of Multiple Time-Scale Climate Events in the Americas." The purpose of the workshop is to convene an interdisciplinary group of scholars to discuss the extent and quality of information directly relevant to the understanding of drought in the region over the past 1,500 years. The workshop will examine drought from the perspective of cultural, historical, and scientific evidence and impacts.The organizer's objectives are to: - Define the history of extreme annual, decadal, and multi-decadal droughts in the Americas with the greatest accuracy and precision in dating possible. Evaluate the record of these drought events in multiple historical and paleoclimate archives. - Refine the chronology of El Nino/Southern Oscillation (ENSO) events based on pre-instrumental and qualitative (historical) documentary information from the Americas. Evaluate the pre-instrumental record of ENSO events in the context of high-resolution regional paleoclimate records, such as those from tree rings and ice cores. - Examine the record of ENSO intensity and frequency to evaluate decadal changes in the ENSO system and to learn how low-frequency changes in ENSO may have impacted societies in the Americas. - Explore the means to use high-resolution paleoclimate records to better define periods of persistent drought and floods that could be related to ENSO variability. - Highlight and discuss possible significant societal impacts during the historical period of the Americas since European arrival that may have a plausible connection to ENSO variability.