Collaborative Research: P2C2--Dust Interactions with Climate in the African Humid Period

合作研究：P2C2——非洲湿润时期尘埃与气候的相互作用

• 批准号: 1003505
• 负责人: Gisela Winckler
• 金额: $ 9.78万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-01 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1003505&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Dust; Interactions

This project explores dust deposition during the African Humid Period (~8,000-5,000 years before present) in North Africa. This region is a significant source region for desert dust today and data suggest that the area was much wetter during the Humid Period and, as a consequence, less of a source of dust. The research team aims to examine the role of dust during this time period as follows: i) compile available desert dust deposition records for this time period; ii) simulate desert dust in the Community Climate System Model (CCSM) and match the available data; and iii) evaluate the impact of dust radiative forcing on climate during this time period. The primary broader impacts involve supporting undergraduate and graduate students as well as helping improve the characterization of aerosols in the CCSM. Improving aerosols for the CCSM has a wide appeal to a broad spectrum of atmospheric scientists.

该项目探索非洲湿润时期（距今约 8,000-5,000 年前）北非的尘埃沉积。该地区是当今沙漠沙尘的重要来源地区，数据表明该地区在湿润时期更加湿润，因此沙尘来源较少。研究小组的目标是研究这段时期沙尘的作用，如下：i）编制这段时期可用的沙漠沙尘沉降记录； ii) 在社区气候系统模型（CCSM）中模拟沙漠沙尘并匹配现有数据； iii) 评估这段时间内尘埃辐射强迫对气候的影响。主要更广泛的影响包括支持本科生和研究生以及帮助改善 CCSM 中气溶胶的表征。 改善 CCSM 的气溶胶对广大大气科学家具有广泛的吸引力。