Collaborative Research: Carbon-Climate Interactions with Increasing Water Demand

合作研究：碳-气候与需水量增加的相互作用

• 批准号: 0628582
• 负责人: Scott Doney
• 金额: $ 86.11万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-10-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0628582&HistoricalAwards=false
• 关键词: Collaborative; Research; Carbon; Climate; Interactions

This project plans to investigate a series of hypotheses via numerical modeling experiments linking carbon and hydrologic cycles across the globe, linking land and ocean, low and high latitudes. The hypotheses are: 1) Summertime droughts on interannual time-scales arise from changes in circulation and the delivery of moisture. 2) The resilience of ecosystems to droughts varies with ecosystem type and structure, so that the magnitude of the decadal-mean carbon sink and carbon-climate feedback is related to the frequency and duration of droughts. 3) Regional, climate warming driven changes in terrestrial runoff and precipitation will increase upper ocean stratification in subpolar and Arctic environments resulting in decreased ocean carbon dioxide (CO2) uptake. 4) Land surface modifications and increasing water demands of the 21st century will amplify drought conditions, increase carbon-climate feedbacks and accelerate global warming.The project will use a series of fully coupled carbon-climate model simulations in the framework of the National Center for Atmospheric Research (NCAR) Community Climate System Model. The project will host a multi-disciplinary graduate student summer school on Coupled Biogeochemistry-Climate Modeling and will develop and test teaching modules in environmental science for high school students.

该项目计划通过连接全球碳和水文循环的数值建模实验，将土地和海洋，低纬度和高纬度联系起来，调查一系列假设。 假设是：1）夏季夏季干旱是由循环和水分传递的变化引起的。 2）生态系统对干旱的弹性随生态系统的类型和结构而异，因此衰老均值的碳汇和碳气候反馈的幅度与干旱的频率和持续时间有关。 3）区域性，气候变暖驱动的陆地径流和降水的变化将增加亚极和北极环境中的上海分层，从而导致海洋二氧化碳（CO2）的摄取减少。 4）土地表面修饰和21世纪的水需求增加将扩大干旱条件，增加碳气候反馈并加速全球变暖。该项目将在国家大气研究中心（NCAR）社区气候系统模型的框架内使用一系列完全耦合的碳气候模型模拟。 该项目将在耦合生物地球化学气候建模上举办一所多学科研究生暑期学校，并将为高中生环境科学开发和测试教学模块。