干旱区生态环境知识资源中心(Arid): Sensitivity of Modeled Soil NOx Emissions to Soil Moisture

Arid

DOI	10.1029/2022JD037611
	Sensitivity of Modeled Soil NOx Emissions to Soil Moisture
	Huber, Daniel E.; Steiner, Allison L.; Kort, Eric A.
通讯作者	Huber, DE
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2023
卷号	128 期号:7
英文摘要	As emissions of nitrogen oxides (NOx) from fossil fuel combustion decrease, the relative contribution of NOx emissions from managed and unmanaged soils (S-NOx) is increasing. Modeling S-NOx presents a challenge as it requires proper characterization of emission dynamics in response to environmental conditions. S-NOx is often represented using the Berkeley Dalhousie Soil NOx Parameterization (BDSNP), which relies upon static relationships between soil moisture and S-NOx for arid and non-arid lands. However, soil chamber and atmospheric studies have shown that emission characteristics are more dynamic, with peak emissions often occurring at higher soil moisture content. Here, to better capture observational studies, we update BDSNP by creating a dynamic S-NOx response to soil moisture based on a normalized soil moisture index. We compare the standard and updated parameterizations over the contiguous United States (U.S.) for 2011-2020 using input soil moisture data from ERA5-Land, MERRA-2 and NLDAS2-Mosaic and evaluate S-NOx across these different input drivers as well as between the standard and updated parameterizations. The standard parametrization exhibits strong sensitivity to different input soil moisture products, with annual U.S. S-NOx differences of up to 0.28 Tg N yr(-1). In contrast, the updated parameterization provides a robust representation of S-NOx with reduced sensitivity to input soil moisture product with differences of at most 0.03 Tg N yr(-1). The updated parameterization simulates a broad increase in S-NOx in non-arid regions, including much of the Eastern U.S., indicating that this region may be more sensitive to climatically-driven S-NOx as anthropogenic NOx emissions continue to decline.
英文关键词	soil NOx nitrogen oxides biogenic emissions soil moisture agricultural emissions soil
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000959896600001
WOS关键词	NITRIC-OXIDE EMISSIONS ; NITROUS-OXIDE ; AIR-QUALITY ; CLIMATE ; SATELLITE ; SURFACE ; TEMPERATURE ; REANALYSIS ; FLUXES
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397351
推荐引用方式 GB/T 7714	Huber, Daniel E.,Steiner, Allison L.,Kort, Eric A.. Sensitivity of Modeled Soil NOx Emissions to Soil Moisture[J],2023,128(7).
APA	Huber, Daniel E.,Steiner, Allison L.,&Kort, Eric A..(2023).Sensitivity of Modeled Soil NOx Emissions to Soil Moisture.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128(7).
MLA	Huber, Daniel E.,et al."Sensitivity of Modeled Soil NOx Emissions to Soil Moisture".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128.7(2023).