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CAREER: The Size of the Global Dust Cycle and its Radiative Impact on Climate

职业：全球灰尘循环的规模及其对气候的辐射影响

基本信息

批准号：
1552519
负责人：
Jasper Kok
金额：
$ 60.17万
依托单位：
University of California-Los Angeles
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-01 至 2021-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1552519&HistoricalAwards=false
关键词：
CAREER Size Global Dust Cycle

项目摘要

At any given time, the Earth's atmosphere contains tens of millions of metric tons of desert dust. Surprisingly, many basic questions regarding the effects of these vast quantities of dust on climate remain poorly known. How much dust is actually in the atmosphere? Does desert dust warm or cool our planet? Will future climate-induced changes in dust storms oppose or enhance man-made climate changes? This project will address these fundamental questions by leveraging satellite observations, experimental measurements of atmospheric dust and its properties, and climate model simulations of desert dust climate impacts. In addition, this project will integrate educational and research activities at UCLA's department of Atmospheric and Oceanic Sciences through the establishment of a Research-Enhanced Learning Assistant program.The research will lead to improved understanding of desert dust's prevalence and its climate impacts as well as enhance forecasts of regional and global climate changes, thereby helping to inform policies to adapt to or mitigate future climate changes. Furthermore, the project results will facilitate improved understanding of dust impacts on weather, the biosphere, air quality, and human health. Finally, the Research-Enhanced Learning Assistant program will improve learning, recruitment, and retention of geosciences students, and especially of under-represented minorities.

在任何时候，地球的大气层都含有数千万公吨的沙漠尘埃。令人惊讶的是，关于这些大量灰尘对气候影响的许多基本问题仍然知之甚少。大气中究竟有多少尘埃？沙漠尘埃会使我们的星球变暖还是变冷？未来由气候引起的沙尘暴变化是否会对抗或加强人为的气候变化？该项目将通过利用卫星观测、大气尘埃及其特性的实验测量以及沙漠尘埃气候影响的气候模型模拟来解决这些基本问题。此外，该项目还将通过建立一个研究增强型学习助理项目，整合加州大学洛杉矶分校大气和海洋科学系的教育和研究活动。该研究将提高对沙漠沙尘的流行及其气候影响的认识，并加强对区域和全球气候变化的预测，从而帮助制定适应或缓解未来气候变化的政策。此外，项目成果将有助于更好地了解灰尘对天气、生物圈、空气质量和人类健康的影响。最后，研究增强学习助理计划将改善学习，招聘和保留地球科学学生，特别是代表性不足的少数民族。