首页 | 本学科首页   官方微博 | 高级检索  
     


A land use database and examples of biogenic isoprene emission estimates for the state of Texas, USA
Authors:Christine Wiedinmyer   Alex Guenther   Mark Estes   I. Wade Strange   Greg Yarwood  David T. Allen  
Affiliation:1. Department of Natural Resources and Environmental Science, University of Nevada-Reno, Reno, NV, USA;2. Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
Abstract:Using data from a variety of sources, land use and vegetation in Texas were mapped with a spatial resolution of approximately 1 km. Over 600 classifications were used to characterize the land use and land cover throughout the state and field surveys were performed to assign leaf biomass densities, by species, to the land cover classifications. The total leaf biomass densities associated with these land use classifications ranged from 0 to 556 g/m2, with the highest assigned total and oak leaf biomass densities located in central and eastern Texas. The land cover data were used as input to a biogenic emissions model, GLOBEIS2. Estimates of biogenic emissions of isoprene based on GLOBEIS2 and the new land cover data showed significant differences when compared to biogenic isoprene emissions estimated using previous land cover data and emission estimation procedures. For example, for one typical domain in eastern Texas, total daily isoprene emissions increased by 38% with the new modeling tools. These results may ultimately affect the way in which ozone and other photochemical pollutants are modeled and evaluated in the state of Texas.
Keywords:Biogenic emissions   Texas   Land cover   Isoprene
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号