DOI: 10.1016/j.atmosenv.2014.04.016
Scopus记录号: 2-s2.0-84899558319
论文题名: Annual variability in leaf area index and isoprene and monoterpene emissions during drought years in Texas
作者: Huang L ; , McDonald-Buller E ; C ; , McGaughey G ; , Kimura Y ; , Allen D ; T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 240
结束页码: 249
语种: 英语
英文关键词: Biogenic emissions
; Drought
; Leaf area index
; MODIS
Scopus关键词: Atmospheric composition
; Climate models
; Estimation
; Isoprene
; Radiometers
; Satellite imagery
; Soil moisture
; Biogenic emission
; Biogenic volatile organic compounds
; Interannual variability
; Leaf Area Index
; Moderate resolution imaging spectroradiometer
; MODIS
; Monoterpene emissions
; Spatial and temporal variation
; Drought
; isoprene
; terpene
; biogenic emission
; drought
; isoprene
; land cover
; leaf area index
; MODIS
; monoterpene
; soil moisture
; spatial variation
; temporal variation
; volatile organic compound
; article
; climate
; drought
; land use
; leaf area
; precipitation
; prediction
; priority journal
; seashore
; seasonal variation
; surface property
; temperature
; United States
; Texas
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A pathway through which drought may affect estimates of emissions of isoprene and other biogenic volatile organic compounds is through changes in leaf area index (LAI), a key input parameter for biogenic emissions models. Spatial and temporal variations of an LAI product derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the relative impact of LAI versus meteorological fields and soil moisture on emissions of isoprene and monoterpenes were examined using the Model of Emissions of Gases and Aerosols from Nature (MEGAN) for four climate regions in eastern Texas. The four regions had diverse land cover and climatology during 2006-2011, years with recurring extreme to exceptional drought. Maximum monthly interannual LAI variations exceeded 20% in the North and South Central regions, but were less than 20% in East Texas and Upper Coast. Estimates of isoprene and monoterpene emissions in the two central regions were lower by as much as-24% due to significant reductions of LAI during droughts in 2006 and 2011. Maximum interannual variability in estimated monthly isoprene emissions exceeded 30%. Reductions in LAI during drought may be accompanied by increases in temperature and surface insolation that exert competing effects on biogenic emissions estimates. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81006
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Energy and Environmental Resources, The University of Texas at Austin, Austin, TX, United States
Recommended Citation:
Huang L,, McDonald-Buller E,C,et al. Annual variability in leaf area index and isoprene and monoterpene emissions during drought years in Texas[J]. Atmospheric Environment,2014-01-01,92