气候变化领域集成服务门户(CCPortal): Global Wet-Reduced Nitrogen Deposition Derived From Combining Satellite Measurements With Output From a Chemistry Transport Model

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DOI	10.1029/2020JD033977
	Global Wet-Reduced Nitrogen Deposition Derived From Combining Satellite Measurements With Output From a Chemistry Transport Model
	Liu L.; Yang Y.; Xi R.; Zhang X.; Xu W.; Liu X.; Li Y.; Liu P.; Wang Z.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	Wet-reduced nitrogen (NH4+) is the main component of atmospheric nitrogen (N) deposition. Due to the poor coverage of ground-based measurements, it is still challenging to characterize the global wet-reduced NH4+ deposition. Here we utilize NH3 measurements from satellite retrievals (Infrared Atmospheric Sounding Interferometer) to estimate global wet NH4+ deposition at 0.1° grids for nine years (2008–2016). We achieve this by developing a novel approach by calculating the feedback ratio between wet NH4+ concentration in precipitation and atmospheric NH3 columns using a global chemistry transport model (GEOS-Chem). Satellite-based wet NH4+ concentration and deposition is relatively highly correlated with the ground-based measurements (r = 0.88 and bias = 12% for wet deposition). The largest increase in the satellite-derived wet NH4+ deposition occurs in southern China (>0.5 kg N ha−1 yr−1), followed by northeastern India, North America, and Western Europe. The proposed method is simple, fast, and effective in estimating wet NH4+ deposition using the satellite observations without depending on the ground-based measurements for constructing the models. It is particularly helpful in estimating wet NH4+ deposition over regions with few monitoring sites. Our unique satellite-derived wet NH4+ deposition can be applied for evaluating its impacts on ecosystems in the future. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	ammonia; Infrared Atmospheric Sounding Interferometer; reduced nitrogen; satellite observation; wet deposition
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185487
作者单位	College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China; International Institute for Earth System Science, Nanjing University, Nanjing, China; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, China; SailBri Cooper Inc., Beaverton, OR, United States
推荐引用方式 GB/T 7714	Liu L.,Yang Y.,Xi R.,et al. Global Wet-Reduced Nitrogen Deposition Derived From Combining Satellite Measurements With Output From a Chemistry Transport Model[J],2021,126(4).
APA	Liu L..,Yang Y..,Xi R..,Zhang X..,Xu W..,...&Wang Z..(2021).Global Wet-Reduced Nitrogen Deposition Derived From Combining Satellite Measurements With Output From a Chemistry Transport Model.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Liu L.,et al."Global Wet-Reduced Nitrogen Deposition Derived From Combining Satellite Measurements With Output From a Chemistry Transport Model".Journal of Geophysical Research: Atmospheres 126.4(2021).