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: 1003509
• 负责人: Natalie Mahowald
• 金额: $ 32.6万
• 依托单位: Cornell 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=1003509&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.

该项目探讨了北非在非洲潮湿时期（在现场之前约8,000 - 5,000年）的灰尘沉积。该区域是当今沙漠灰尘的重要来源区域，数据表明该区域在潮湿时期湿润得多，因此，灰尘的来源较少。研究小组的目的是在此期间检查灰尘的作用，如下所示：i）编译此时期的可用沙漠尘埃沉积记录； ii）模拟社区气候系统模型（CCSM）中的沙漠灰尘并匹配可用数据； iii）评估在这段时间内尘埃辐射强迫对气候的影响。最广泛的影响涉及支持本科生和研究生，并有助于改善CCSM中气溶胶的特征。 改善CCSM的气溶胶对大气科学家的广泛吸引力。