Collaborative Research: P2C2: Reconstructing Northeast Mexico Hydroclimate since the Last Interglacial Period

合作研究：P2C2：重建末次间冰期以来墨西哥东北部的水文气候

• 批准号: 1804512
• 负责人: William McGee
• 金额: $ 10.34万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-02-01 至 2022-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1804512&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Reconstructing; Northeast

The majority of climate models show enhanced aridity throughout Mexico as a result of climatic warming. However, instrumental data, existing paleoclimate proxy records, and climate model simulations demonstrate that precipitation in the region exhibits substantial interannual to decadal scale variability in response to naturally recurring internal climate modes. A more complete understanding of the impacts of natural variability and forced anthropogenic climate change on water resources in Mexico and the southwestern U.S. is important given the potentially serious impacts of increased drought frequency and magnitude on economic, agricultural, and public water supply issues.Development of hydroclimate records from low latitude regions is of critical importance for assessing the response of regional climate to external forcing and internal modes of climate variability, for investigating teleconnections between the tropics and high-latitude regions, and for evaluating climate models. This work will address several key questions about the climate system, including: (1) Does NE Mexican hydroclimate vary in phase with Northern Hemisphere Summer Insolation? (2) Did abrupt decreases in Atlantic Meridional Overturning Circulation (AMOC) strength during Heinrich Events lead to dry conditions in NE Mexico? (3) Do patterns of decadal to multidecadal scale rainfall variability track Atlantic and/or Pacific sea surface temperatures?This project includes a potential for greater understanding of hydroclimate using cave deposits. The project will also contribute to the scientific training and professional development of graduate students, including one Mexican-American female, and multiple undergraduate students. The lead investigator is a Native American female and for the past six years has directed the American Indian Summer Institute in Earth System Science, a two-week residential program for Indigenous high school students. The researchers and students will incorporate aspects of this research into existing outreach efforts, including graduate school outreach at the annual Society for Advancement of Chicanos/Hispanics and Native Americans in Science (SACNAS) and American Indian Science and Engineering Society (AISES) conferences, climate science lessons at local classrooms, and presentations at the Cambridge Science Festival.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

由于气候变暖，大多数气候模型在整个墨西哥都表现出增强的干旱。 然而，工具数据，现有的古气候代理记录和气候模型模拟表明，该地区的降水表现出对自然重复发生的内部气候模式的响应，在年际与衰老量表变异性方面表现出很大的年际变化。 鉴于干旱频率增加对经济，农业和公共供水问题的潜在严重影响，对墨西哥和美国西南部的水资源的影响更加完整地理解对墨西哥和美国西南部水资源的影响很重要。在低纬度区域的内部调节和调节的重要性重要性上，对地方的重要性和调整的重要性是为了评估供应型号的重要性的重要性，该响应是为了评估更重要的响应，以评估供应范围的供应，以评估供应范围的供应，以评估供应质量的重要性。热带地区和高纬度区域之间的遥相关以及用于评估气候模型。这项工作将解决有关气候系统的几个关键问题，包括：（1）NE墨西哥氢化气候是否与北半球的夏季日光相比会发生不同吗？ （2）在海因里希事件期间，大西洋子午倾覆（AMOC）强度的突然降低会导致墨西哥新墨西哥的干燥条件吗？ （3）际降低降雨量变化的模式是否轨道大西洋和/或太平洋海面温度？该项目包括使用洞穴沉积物对氢化气候的了解的潜力。该项目还将为研究生的科学培训和专业发展做出贡献，其中包括一名墨西哥裔女性和多名本科生。首席调查员是美国原住民女性，在过去的六年中，负责美国印第安人夏季科学学院，这是一项为期两周的土著高中学生的住宅计划。研究人员和学生将将这项研究的各个方面纳入现有的宣传工作，包括在芝加哥/西班牙裔美国人和美国原住民学会的年度研究生宣传（SACNAS）和美洲印度印度与工程学会（AISES）会议（AISS）会议（AISS）会议（AISS）会议，在当地科学上的气候科学和剑桥科学的介绍。利用基金会的知识分子和更广泛的影响审查标准。

项目成果

Precipitation in Northeast Mexico Primarily Controlled by the Relative Warming of Atlantic SSTs

• DOI: 10.1029/2022gl098186
• 发表时间: 2022-02
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: K. Wright;K. Johnson;Tripti Bhattacharya;Gabriela Serrato Marks;D. McGee;D. Elsbury;Y. Peings;Jean-Louis Lacaille-Múzquiz;Gianna Lum;L. Beramendi-Orosco;G. Magnusdottir