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DOI	10.5194/acp-22-13303-2022
	Interactive biogenic emissions and drought stress effects on atmospheric composition in NASA GISS ModelE
	Klovenski, Elizabeth; Wang, Yuxuan; Bauer, Susanne E.; Tsigaridis, Kostas; Faluvegi, Greg; Aleinov, Igor; Kiang, Nancy Y.; Guenther, Alex; Jiang, Xiaoyan; Li, Wei; Lin, Nan
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13303
结束页码	13323
卷号	22 期号:20 页码:21
英文摘要	Drought is a hydroclimatic extreme that causes perturbations to the terrestrial biosphere and acts as a stressor on vegetation, affecting emissions patterns. During severe drought, isoprene emissions are reduced. In this paper, we focus on capturing this reduction signal by implementing a new percentile isoprene drought stress (y(d)) algorithm in NASA GISS ModelE based on the MEGAN3 (Model of Emissions of Gases and Aerosols from Nature Version 3) approach as a function of a photosynthetic parameter (V-c,V-max) and water stress (beta). Four global transient simulations from 2003-2013 are used to demonstrate the effect without y(d) (Default_ModelE) and with online y(d) (DroughtStress_ModelE). DroughtStress_ModelE is evaluated against the observed isoprene measurements at the Missouri Ozarks AmeriFlux (MOFLUX) site during the 2012 severe drought where improvements in the correlation coefficient indicate it is a suitable drought stress parameterization to capture the reduction signal during severe drought. The application of y(d) globally leads to a decadal average reduction of similar to 2.7 %, which is equivalent to similar to 14.6 Tg yr(-1) of isoprene. The changes have larger impacts in regions such as the southeastern US. DroughtStress_ModelE is validated using the satellite Omega HCHO column from the Ozone Monitoring Instrument (OMI) and surface O-3 observations across regions of the US to examine the effect of drought on atmospheric composition. It was found that the inclusion of isoprene drought stress reduced the overestimation of Omega HCHO in Default_ModelE during the 2007 and 2011 southeastern US droughts and led to improvements in simulated O-3 during drought periods. We conclude that isoprene drought stress should be tuned on a model-by-model basis because the variables used in the parameterization responses are relative to the land surface model hydrology scheme (LSM) and the effects of y(d) application could be larger than seen here due to ModelE not having large biases of isoprene during severe drought.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000868740100001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273103
作者单位	University of Houston System; University of Houston; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Columbia University; University of California System; University of California Irvine; Tsinghua University
推荐引用方式 GB/T 7714	Klovenski, Elizabeth,Wang, Yuxuan,Bauer, Susanne E.,et al. Interactive biogenic emissions and drought stress effects on atmospheric composition in NASA GISS ModelE[J],2022,22(20):21.
APA	Klovenski, Elizabeth.,Wang, Yuxuan.,Bauer, Susanne E..,Tsigaridis, Kostas.,Faluvegi, Greg.,...&Lin, Nan.(2022).Interactive biogenic emissions and drought stress effects on atmospheric composition in NASA GISS ModelE.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),21.
MLA	Klovenski, Elizabeth,et al."Interactive biogenic emissions and drought stress effects on atmospheric composition in NASA GISS ModelE".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):21.