The Impacts of Tropical Deforestation on Regional and Global Hydroclimate

热带森林砍伐对区域和全球水文气候的影响

• 批准号: 0634745
• 负责人: Roni Avissar
• 金额: --
• 依托单位: Duke University
• 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: 2006-12-01 至 2009-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0634745&HistoricalAwards=false
• 关键词: Impacts; Tropical; Deforestation; Regional; Global

This renewal is based upon the PI's previous work in examining global teleconnections driven by land cover perturbations in the tropics (much in the same vein as El Nino drives teleconnections into mid-latitudes from the tropical oceans). Previous work was based on examination of signals in three existing global climate models. The PI will extend the work into more of an earth system framework (the PI uses the term "EcoHydroClimatological"), including CO2 forcing, vegetation dynamics (specified and interactive land cover change), and the effects of model resolution/mesoscale processes. This will be done in a more focused modeling framework using the newly-developed Ocean Land Atmosphere Model (OLAM) - a telescoping climate model coupled to the Ecosystem Demography Version 2 Model (ED2) land surface model (hydrology, land-surface biophysics, vegetation dynamics and soil chemistry). Validation of the new coupled model is the primary task of this rescoped project. The broader impacts include enhanced knowledge about land surface processes and their influence on hydrology and climate. A post-doctoral researcher will be supported.

此次更新是基于 PI 之前研究由热带地区土地覆盖扰动驱动的全球遥相关的工作（与厄尔尼诺现象将遥相关从热带海洋驱动到中纬度的情况非常相似）。 之前的工作基于对三个现有全球气候模型中信号的检查。 PI 将把工作扩展到更多的地球系统框架（PI 使用术语“EcoHydroClimatological”），包括二氧化碳强迫、植被动态（指定的和交互式的土地覆盖变化）以及模型分辨率/中尺度过程的影响。 这将在一个更有针对性的建模框架中完成，使用新开发的海洋陆地大气模型（OLAM）——一种与生态系统人口学第二版模型（ED2）陆地表面模型（水文学、陆地表面生物物理学、植被动力学和土壤化学）相结合的伸缩气候模型。 新耦合模型的验证是这个重新确定范围的项目的首要任务。 更广泛的影响包括增强对地表过程及其对水文和气候影响的了解。 支持一名博士后研究员。