气候变化领域集成服务门户(CCPortal): Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP

CCPortal

DOI	10.1029/2020GL089949
	Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP
	Huber D.E.; Steiner A.L.; Kort E.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	We use TROPOMI (TROPOspheric Monitoring Instrument) tropospheric nitrogen dioxide (NO2) measurements to identify cropland soil nitrogen oxide (NOx = NO + NO2) emissions at daily to seasonal scales in the U.S. Southern Mississippi River Valley. Evaluating 1.5 years of TROPOMI observations with a box model, we observe seasonality in local NOx enhancements and estimate maximum cropland soil NOx emissions (15–34 ng N m−2 s−1) early in growing season (May–June). We observe soil NOx pulsing in response to daily decreases in volumetric soil moisture (VSM) as measured by the Soil Moisture Active Passive (SMAP) satellite. Daily NO2 enhancements reach up to 0.8 × 1015 molecules cm−2 4–8 days after precipitation when VSM decreases to ~30%, reflecting emissions behavior distinct from previously defined soil NOx pulse events. This demonstrates that TROPOMI NO2 observations, combined with observations of underlying process controls (e.g., soil moisture), can constrain soil NOx processes from space. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Soil moisture; Troposphere; Growing season; Mississippi river; Monitoring instruments; NOx emissions; Seasonal scale; Soil moisture active passive (SMAP); Tropospheric nitrogen dioxide; Volumetric soil moistures; Nitrogen oxides; agricultural land; agricultural soil; emission; growing season; nitrogen dioxide; nitrous oxide; seasonality; soil moisture; soil nitrogen; troposphere; Mississippi River; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169415
作者单位	Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Huber D.E.,Steiner A.L.,Kort E.A.. Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP[J],2020,47(22).
APA	Huber D.E.,Steiner A.L.,&Kort E.A..(2020).Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP.Geophysical Research Letters,47(22).
MLA	Huber D.E.,et al."Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP".Geophysical Research Letters 47.22(2020).