CAREER: Assessing the Role of Land Surface Processes on the Climatic Changes in the Heavy Rain and Convection over the Indian Monsoon Region

职业：评估陆地表面过程对印度季风区暴雨和对流气候变化的作用

• 批准号: 0847472
• 负责人: Dev Niyogi
• 金额: $ 64.1万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-02-01 至 2018-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0847472&HistoricalAwards=false
• 关键词: CAREER; Assessing; Role; Land; Surface

The study seeks to test the hypothesis that the land surface feedback is an important modulator of the heavy rains and convection climatology over the Indian monsoon region; and that the land use change has significantly contributed to the changes in the heavy rainfall climatology over the Indian monsoon region in recent decades. The project will address the following outstanding questions: (i) What is the impact of land surface processes on convection and heavy rainfall over the Indian monsoon region? (ii) Is there a causal control of local land surface feedback on the Indian monsoon heavy rainfall climatology?, and, What aspects of this land use feedback can be detected from current observations, models, and reanalysis products? These questions seek to investigate if the impact of land surface processes can be statistically detected from multidecadal analysis and observations; and what are the mechanisms by which land surface affects regional convection and heavy rains over the Indian monsoon region. Using multidecadal in situ and remote sensed observations, and results from land data assimilation system and coupled land atmosphere models, this project will yield an improved definition, attribution and prediction of the Indian Monsoon rainfall changes. It will also improve the understanding of the mechanisms of monsoonal convective processes and its predictability, including the impacts of land use land cover change and land surface variability. This will enable knowledge that is transformative to weather and climate models and helps develop a more complete understanding of the climate change processes over the Indian monsoon region. As a broader impact, using the research findings, educational material will be developed for general public, undergraduates, and advanced graduate students. The research will directly contribute towards the training of graduate students and postdoctoral researchers. Working with middle school teachers, project findings will be used to develop middle school classroom monsoon activities. These activities will be transformed to a media content website, as well as in 4H handbooks, state fair activities, and for visualization and student activities digital libraries. Results of this work will be actively disseminated through participation at professional annual meetings and conferences, and in peer-reviewed journals, and popular media.

该研究试图检验以下假设：土地表面反馈是印度季风地区大雨和对流气候的重要调节剂。而且，近几十年来，土地利用变化显着促进了印度季风地区大降雨气候的变化。该项目将解决以下未来的问题：（i）印度季风地区的土地表面过程对对流和大降雨的影响是什么？ （ii）在印度季风大雨气候中，当地土地表面反馈是否有因果控制？这些问题旨在研究是否可以从多年分析和观察结果统计地检测到土地表面过程的影响；土地表面影响着印度季风地区的区域对流和大雨的机制是什么。使用多年代原位和遥感观察结果，以及土地数据同化系统和耦合土地大气模型的结果，该项目将产生改进的定义，归因和预测印度季风降雨的变化。它还将提高人们对季风对流过程机制及其可预测性的理解，包括土地利用的影响，土地覆盖率变化和土地表面变异性。这将使知识能够转变为天气和气候模型，并有助于对印度季风地区的气候变化过程有更完整的了解。作为更广泛的影响，使用研究结果，将为公众，本科生和高级研究生开发教育材料。这项研究将直接有助于研究研究生和博士后研究人员的培训。与中学老师合作，​​项目发现将用于开发中学课堂季风活动。这些活动将转变为媒体内容网站，以及4H手册，州公平活动以及可视化和学生活动数字图书馆。这项工作的结果将通过参加专业的年度会议和会议，在同行评审的期刊和流行媒体中积极传播。