Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091266 |
Quantifying nitrous oxide emissions in the U.S. Midwest ‐ A top‐down study using high resolution airborne in situ observations | |
Maximilian Eckl; Anke Roiger; Julian Kostinek; Alina Fiehn; Heidi Huntrieser; Christoph Knote; Zachary R. Barkley; Stephen M. Ogle; Bianca C. Baier; Colm Sweeney; Kenneth J. Davis | |
2021-01-14 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The densely farmed U.S. Midwest is a prominent source of nitrous oxide (N2O) but top‐down and bottom‐up N2O emission estimates differ significantly. We quantify Midwest N2O emissions by combining observations from the Atmospheric Carbon and Transport‐America campaign with model simulations to scale the Emissions Database for Global Atmospheric Research (EDGAR). In October 2017 we scaled agricultural EDGAR v4.3.2 and v5.0 emissions by factors of 6.3 and 3.5, respectively, resulting in 0.42 nmol m−2 s−1 Midwest N2O emissions. In June/July 2019, a period when extreme flooding was occurring in the Midwest, agricultural scaling factors were 11.4 (v4.3.2) and 9.9 (v5.0), resulting in 1.06 nmol m−2 s−1 Midwest emissions. Uncertainties are on the order of 50 %. Agricultural emissions estimated with the process‐based model DayCent (Daily version of the CENTURY ecosystem model) were larger than in EDGAR but still substantially smaller than our estimates. The complexity of N2O emissions demands further studies to fully characterize Midwest emissions. |
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/311312 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Maximilian Eckl,Anke Roiger,Julian Kostinek,等. Quantifying nitrous oxide emissions in the U.S. Midwest ‐ A top‐down study using high resolution airborne in situ observations[J]. Geophysical Research Letters,2021. |
APA | Maximilian Eckl.,Anke Roiger.,Julian Kostinek.,Alina Fiehn.,Heidi Huntrieser.,...&Kenneth J. Davis.(2021).Quantifying nitrous oxide emissions in the U.S. Midwest ‐ A top‐down study using high resolution airborne in situ observations.Geophysical Research Letters. |
MLA | Maximilian Eckl,et al."Quantifying nitrous oxide emissions in the U.S. Midwest ‐ A top‐down study using high resolution airborne in situ observations".Geophysical Research Letters (2021). |
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