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Observing Urban Aerosols Using Co-Located NO₂ Enhancement from TROPOMI

Jiang, Fang-Qing and Zeng, Zhao-Cheng (2020) Observing Urban Aerosols Using Co-Located NO₂ Enhancement from TROPOMI. In: 2020 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2020). IEEE , Piscataway, NJ, pp. 5509-5512. ISBN 9781728163741. https://resolver.caltech.edu/CaltechAUTHORS:20210225-143307017

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Abstract

This study uses observations of NO₂ and aerosol index (AI) from tropospheric monitoring instrument (TROPOMI) in China to study the feasibility of using NO₂ as a tracer to track the urban emission of air pollutants. Urban aerosol emissions are difficult to track due to its mixing with background. Nitrogen dioxide gas is an important urban emissions from human activities, and an effective indicator of emissions sources, because it is short-lived and chemically decayed rapidly away from its sources. In view of the fact that nitrogen dioxide and aerosol are mainly emitted simultaneously in cities, the spatial distribution map of nitrogen dioxide concentration can be used to monitor the urban aerosol emission trajectory caused by atmospheric transport. In this study, we selected two cities (Shijiazhuang, Baotou) in China, and used observation data from the high spatial resolution TROPOMI satellite to compare the spatial distribution of NO₂ concentration and AI. First, the enhancement of NO₂ concentration is used to identify urban plumes, and then these plumes are analyzed to indicate the optical characteristics of aerosols. The results show that the concentration of NO₂ as a tracer can be a good indicator of the spatial distribution of urban aerosol emissions.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/igarss39084.2020.9324151DOIArticle
https://s5phub.copernicus.eu/dhus/#/homeRelated ItemData
ORCID:
AuthorORCID
Zeng, Zhao-Cheng0000-0002-0008-6508
Alternate Title:Observing Urban Aerosols Using Co-Located NO2 Enhancement from TROPOMI
Additional Information:© 2020 IEEE. We would like to acknowledge the following datasets available for our study: TROPOMI aerosol index and NO2 data are available from the Sentinel-5P Pre-Operations Data Hub for TROPOMI at: https://s5phub.copernicus.eu/dhus/#/home.
Record Number:CaltechAUTHORS:20210225-143307017
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210225-143307017
Official Citation:F. -Q. Jiang and Z. -C. Zeng, "Observing Urban Aerosols Using Co-Located NO2 Enhancement from TROPOMI," IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, Waikoloa, HI, USA, 2020, pp. 5509-5512, doi: 10.1109/IGARSS39084.2020.9324151.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108216
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Feb 2021 00:26
Last Modified:26 Feb 2021 00:26

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