US COVID-19 shutdown demonstrates importance of background NO2 in inferring NOx emissions from satellite NO2 observations

Qu, Zhen; Jacob, Daniel J.; Silvern, Rachel F.; Shah, Viral; Campbell, Patrick C.; Valin, Lukas C.; Murray, Lee T.

doi:10.1029/2021GL092783

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

US COVID-19 shutdown demonstrates importance of background NO2 in inferring NOx emissions from satellite NO2 observations

2021
By Qu, Zhen ; Jacob, Daniel J. ; Silvern, Rachel F. ; ...
Source: Geophysical Research Letters 48(10): e2021GL092783

[PDF-986.84 KB]

Details Supporting Files You May Also Like

Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Qu, Zhen ; Jacob, Daniel J. ; Silvern, Rachel F. ; Shah, Viral ; Campbell, Patrick C. ; ... More +

Qu, Zhen ; Jacob, Daniel J. ; Silvern, Rachel F. ; Shah, Viral ; Campbell, Patrick C. ; Valin, Lukas C. ; Murray, Lee T. Less -
NOAA Program & Office:

CISESS (Cooperative Institute for Satellite Earth System Studies) ; OAR (Oceanic and Atmospheric Research) ; ARL (Air Resources Laboratory) ; NESDIS (National Environmental Satellite, Data, and Information Service)

CISESS (Cooperative Institute for Satellite Earth System Studies) ; OAR (Oceanic and Atmospheric Research) ; ARL (Air Resources Laboratory) ; NESDIS (National Environmental Satellite, Data, and Information Service) Less -
Description:

Satellite nitrogen dioxide (NO2) measurements are used extensively to infer nitrogen oxide emissions and their trends, but interpretation can be complicated by background contributions to the NO2 column sensed from space. We use the step decrease of US anthropogenic emissions from the COVID-19 shutdown to compare the responses of NO2 concentrations observed at surface network sites and from satellites (Ozone Monitoring Instrument [OMI], Tropospheric Ozone Monitoring Instrument [TROPOMI]). After correcting for differences in meteorology, surface NO2 measurements for 2020 show decreases of 20% in March–April and 10% in May–August compared to 2019. The satellites show much weaker responses in March–June and no decrease in July–August, consistent with a large background contribution to the NO2 column. Inspection of the long-term OMI trend over remote US regions shows a rising summertime NO2 background from 2010 to 2019 potentially attributable to wildfires.
Keywords:

[+]

COVID-19 (Disease) Nitrogen Dioxide Remote Sensing
Source:

Geophysical Research Letters 48(10): e2021GL092783
DOI:

https://doi.org/10.1029/2021GL092783
Document Type:

Journal Article
Funding:

Grant no. NA19NES4320002
Place as Subject:

United States
License:

https://creativecommons.org/licenses/by-nc/4.0/
Rights Information:

CC BY-NC
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:a6199652702f721cb2b1dd7ce6cc8397e30de607c076bf754c6bc344178a05a6
Download URL:

https://repository.library.noaa.gov/view/noaa/48109/noaa_48109_DS1.pdf
File Type:

Qu_GeophysResLett_2021_Supp.pdf

pdf

More +