项目名称: 全球变化背景下北京BVOCs排放变化的数值模拟研究
项目编号: No.41305121
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 吴其重
作者单位: 北京师范大学
项目金额: 24万元
中文摘要: 由于生物源挥发性有机物(BVOCs)的排放过程受环境温湿度和辐射的影响,在全球变化背景下其排放正发生变化,并将对臭氧和二次有机气溶胶形成等对流层化学过程产生重要作用,因此开展BVOCs的研究对研究全球变化下区域空气质量及气候反馈效应具有重要意义。本项目拟采用耦合生物源排放模型(BEIS和MEGAN)的空气质量模式等数值模拟工具,结合卫星植被资料,在考虑温度、辐射等因素对BVOCs排放影响的条件下建立北京BVOCs排放源;并基于各方面的观测数据,验证评估耦合了生物源排放模型的空气质量模式对臭氧和气溶胶的模拟能力。采用IPCC第五次评估报告(AR5)2100年三种不同未来情景(RCP2.6、RCP4.5及RCP8.5)地球系统模式(BNU-ESM)结果,驱动上述已模拟验证的数值模拟工具研究不同气候变化情景下北京BVOCs排放变化,以及由于土地利用变化引起的BVOCs排放变化。
中文关键词: 生物源挥发性有机物;数值模拟;全球变化;臭氧;气溶胶
英文摘要: According to the emissions process of biogenic volatile organic compounds(BVOCs) is affected by the temperature and radiation, that its emissions would changes a lot under the global change, and will play an important role in tropospheric chemistry process of ozone and secondary organic aerosol formation. Thus, the study of BVOCs will be of great significance on the research of the regional air quality and climate feedback under the global change. This proposal based on the regional air quality model, coupled the biogenic emission model(BEIS & MEGAN) with the satellite vegetation data, and calculate on-line the effect of the temperature and radiation on the BVOCs emission, and establish the Beijing BVOCs emission inventory. In addition, the verification and evaluation on the model performance of ozone and aerosol in the regional air quality model coupled BVOCs models will be present. And then, based on the earth system model results in year 2100 for the furture scenarios (RCP2.6, RCP4.5 and RCP8.5), which have be published and would be used in IPCC 5th assessment report(AR5), this proposal will focus on the BVOCs emissions under the furture climate change, and the changes of the BVOCs emissions due to the changes of land use in the future.
英文关键词: biogenic VOCs;numerical study;global change;ozone;aerosol