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Title: A high-resolution and observationally constrained OMI NO2 satellite retrieval

Journal Article · · Atmospheric Chemistry and Physics (Online)
 [1];  [2];  [3]; ORCiD logo [4];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  2. Univ. Space Research Assoc., Columbia, MD (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. NOAA Air Resources Lab., College Park, MD (United States); Univ. of Maryland, College Park, MD (United States)
  4. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Johns Hopkins Univ. Applied Physics Lab., Laurel, MD (United States)

Here, this work presents a new high-resolution NO2 dataset derived from the NASA Ozone Monitoring Instrument (OMI) NO2 version 3.0 retrieval that can be used to estimate surface-level concentrations. The standard NASA product uses NO2 vertical profile shape factors from a 1.25° × 1° (~110 km × 110 km) resolution Global Model Initiative (GMI) model simulation to calculate air mass factors, a critical value used to determine observed tropospheric NO2 vertical columns. To better estimate vertical profile shape factors, we use a high-resolution (1.33 km × 1.33 km) Community Multi-scale Air Quality (CMAQ) model simulation constrained by in situ aircraft observations to recalculate tropospheric air mass factors and tropospheric NO2 vertical columns during summertime in the eastern US. In this new product, OMI NO2 tropospheric columns increase by up to 160% in city centers and decrease by 20–50 % in the rural areas outside of urban areas when compared to the operational NASA product. Our new product shows much better agreement with the Pandora NO2 and Airborne Compact Atmospheric Mapper (ACAM) NO2 spectrometer measurements acquired during the DISCOVER-AQ Maryland field campaign. Furthermore, the correlation between our satellite product and EPA NO2 monitors in urban areas has improved dramatically: r2 = 0.60 in the new product vs. r2 = 0.39 in the operational product, signifying that this new product is a better indicator of surface concentrations than the operational product. Our work emphasizes the need to use both high-resolution and high-fidelity models in order to recalculate satellite data in areas with large spatial heterogeneities in NOx emissions. Although the current work is focused on the eastern US, the methodology developed in this work can be applied to other world regions to produce high-quality region-specific NO2 satellite retrievals.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USEPA
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1411029
Journal Information:
Atmospheric Chemistry and Physics (Online), Vol. 17, Issue 18; ISSN 1680-7324
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (12)

Meteorological modeling relevant to mesoscale and regional air quality applications: a review journal December 2019
Quantification of the effect of modeled lightning NO 2 on UV–visible air mass factors journal January 2017
Evaluation of version 3.0B of the BEHR OMI NO 2 product journal January 2019
Evaluating the impact of spatial resolution on tropospheric NO2 column comparisons within urban areas using high-resolution airborne data journal January 2019
A top-down assessment using OMI NO 2 suggests an underestimate in the NO x emissions inventory in Seoul, South Korea, during KORUS-AQ journal January 2019
An Observation‐Based Correction for Aerosol Effects on Nitrogen Dioxide Column Retrievals Using the Absorbing Aerosol Index journal July 2019
Detection of Strong NOX Emissions from Fine-scale Reconstruction of the OMI Tropospheric NO2 Product journal August 2019
Assessment of NO2 observations during DISCOVER-AQ and KORUS-AQ field campaigns journal January 2020
Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States journal October 2019
Retrieval of total column and surface NO2 from Pandora zenith-sky measurements journal January 2019
Mapping and Statistical Analysis of NO2 Concentration for Local Government Air Quality Regulation journal July 2019
NO 2 and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign journal January 2018


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