MMIA: Terrestrial Biospheric Responses to Atmospheric Deposition and Application to Integrated Assessment

MMIA：陆地生物圈对大气沉降的响应及其综合评估的应用

基本信息

批准号：
9711626
负责人：
Edward Rastetter
金额：
$ 40万
依托单位：
Marine Biological Laboratory
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1998
资助国家：
美国
起止时间：
1998-01-15 至 2002-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9711626&HistoricalAwards=false
关键词：
MMIA Terrestrial Biospheric Responses Atmospheric

项目摘要

ABSTRACT Rastetter 9711626 Most integrated assessments of climate change do not consider the effects of the deposition of atmospheric compounds on ecosystem biogeochemistry. This project will study these effects in conjunction with the responses of terrestrial ecosystems to changes in atmospheric chemistry and climate and to incorporate these responses into an integrated assessment framework. The work will emphasize the effects of nitrate deposition and of ozone and sulfur dioxide exposure on global ecosystems. The MBL Terrestrial Ecosystem Model (TEM) coupled to the MIT Coupled Chemistry-Climate Model(CCM). TEM will be improved to include the influence of nitrate inputs and pollutant exposure on ecosystem function. TEM and CCM will enable predictions relevant to future economic viability of forests and their uptake of CO2. Because it is expected that the future effects on ecosystems will be sensitive to the relative mix of CO2, NOx, SO2 and CO emissions, predictions of anthropogenic emissions from the MIT model for global and regional economic development (EPPA) will be used as input to the CCM and TEM. The integrated effects and feedbacks of human activity, atmospheric composition, climate, and ecosystem change will be studied using the MIT Global System Model for Integrated Assessment of which TEM, CCM and EPPA are coupled component submodels. Using sensitivity studies, it is expected that the results of this work will help set priorities for future research on the effects of atmospheric deposition on ecosystems.

摘要Rastetter 9711626气候变化的最综合评估不考虑大气化合物沉积对生态系统生物地球化学的影响。该项目将研究这些影响，结合陆地生态系统对大气化学和气候变化的反应，并将这些反应纳入综合评估框架中。这项工作将强调硝酸盐沉积以及臭氧和二氧化硫对全球生态系统的影响。与MIT耦合化学气候模型（CCM）耦合的MBL陆地生态系统模型（TEM）。 TEM将得到改进，包括硝酸盐输入和污染物暴露对生态系统功能的影响。 TEM和CCM将实现与森林未来经济可行性及其对CO2的吸收有关的预测。因为预计未来对生态系统的影响将对CO2，NOX，SO2和CO排放的相对组合敏感，因此将使用MIT模型的全球和区域经济发展模型（EPPA）的人为排放的预测来用作CCM和TEM的输入。将使用MIT全球系统模型来研究人类活动，大气组成，气候和生态系统变化的综合效果和反馈，用于综合评估哪些TEM，CCM和EPPA是耦合的组件supdels。使用敏感性研究，预计这项工作的结果将有助于为将来研究大气沉积对生态系统的影响而设定优先级。