Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089949 |
Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP | |
Daniel E. Huber; Allison L. Steiner; Eric A. Kort | |
2020-10-29 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
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 United States 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 x 1015 molecules cm‐2 4‐8 days after precipitation when VSM decreases to ~30%, reflecting a VSM that is wetter than previously defined 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. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/301840 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Daniel E. Huber,Allison L. Steiner,Eric A. Kort. Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP[J]. Geophysical Research Letters,2020. |
APA | Daniel E. Huber,Allison L. Steiner,&Eric A. Kort.(2020).Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP.Geophysical Research Letters. |
MLA | Daniel E. Huber,et al."Daily Cropland Soil NOx Emissions Identified by TROPOMI and SMAP".Geophysical Research Letters (2020). |
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