气候变化领域集成服务门户(CCPortal): Anthropogenic CO2emissions assessment of Nile Delta using XCO2and SIF data from OCO-2 satellite

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DOI	10.1088/1748-9326/ab9cfe
	Anthropogenic CO2emissions assessment of Nile Delta using XCO2and SIF data from OCO-2 satellite
	Shekhar A.; Chen J.; Paetzold J.C.; Dietrich F.; Zhao X.; Bhattacharjee S.; Ruisinger V.; Wofsy S.C.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	We estimate CO2 emissions from the Nile Delta region of Egypt, using over five years of column-averaged CO2 dry air mole fraction (XCO2) data from the NASA's OCO-2 satellite. The Nile Delta has significant anthropogenic emissions of CO2 from urban areas and irrigated farming. It is surrounded by the Sahara desert and the Mediterranean Sea, minimizing the confounding influence of CO2 sources in surrounding areas. We compiled the observed spatial and temporal variations of XCO2 in the Nile Delta region (XCO2,del), and found that values for XCO2,del were on average 1.1 ppm higher than XCO2,des (mean XCO2 in desert area). We modelled the expected enhancements of XCO2 over the Nile Delta based on two global CO2 emission inventories, EDGAR and ODIAC. Modelled XCO2 enhancements were much lower, indicating underestimation of CO2 emissions in the Nile Delta region by mean factors of 4.5 and 3.4 for EDGAR and ODIAC, respectively. Furthermore, we captured a seasonal pattern of XCO2 enhancement (ΔXCO2), with significantly lower ΔXCO2 during the summer agriculture season in comparison to other seasons. Additionally, we used solar-induced fluorescence (SIF) measurement from OCO-2 to understand how the CO2 emissions are related to agricultural activities. Finally, we estimated an average emission of CO2 from the Nile Delta from 2014-2019 of 470 Mt CO2/year, about 1% of global anthropogenic emissions, which is significantly more than estimated hitherto. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	agriculture; EDGAR; ODIAC; STILT; urban; XCO2
语种	英语
scopus关键词	Agricultural robots; Agriculture; NASA; Agricultural activities; Anthropogenic emissions; Mediterranean sea; Mole fraction; Sahara desert; Seasonal patterns; Solar-induced fluorescences; Spatial and temporal variation; Carbon dioxide; carbon dioxide; carbon emission; human activity; OCO; satellite data; Egypt; Nile Delta
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153754
作者单位	Professorship of Environmental Sensing and Modeling, Technical University of Munich, Germany; Chair of Computer Aided Medical Procedures and Augmented Reality, Technical University of Munich, Germany; Department of Earth and Planetary Sciences, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Department of Environmental Systems Science, Eth Zurich, Switzerland
推荐引用方式 GB/T 7714	Shekhar A.,Chen J.,Paetzold J.C.,et al. Anthropogenic CO2emissions assessment of Nile Delta using XCO2and SIF data from OCO-2 satellite[J],2020,15(9).
APA	Shekhar A..,Chen J..,Paetzold J.C..,Dietrich F..,Zhao X..,...&Wofsy S.C..(2020).Anthropogenic CO2emissions assessment of Nile Delta using XCO2and SIF data from OCO-2 satellite.Environmental Research Letters,15(9).
MLA	Shekhar A.,et al."Anthropogenic CO2emissions assessment of Nile Delta using XCO2and SIF data from OCO-2 satellite".Environmental Research Letters 15.9(2020).