Transpacific Transport of Asian Peroxyacetyl Nitrate (PAN) Observed from Satellite: Implications for Ozone

Zhai, Shixian; Jacob, Daniel J.; Franco, Bruno; Clarisse, Lieven; Coheur, Pierre; Shah, Viral; Bates, Kelvin H.; Lin, Haipeng; Dang, Ruijun; Sulprizio, Melissa P.; Huey, L. Gregory; Moore, Fred L.; Jaffe, Daniel A.; Liao, Hong

doi:10.1021/acs.est.4c01980

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Transpacific Transport of Asian Peroxyacetyl Nitrate (PAN) Observed from Satellite: Implications for Ozone

2024
By Zhai, Shixian ; Jacob, Daniel J. ; Franco, Bruno ; ...
Source: Environmental Science & Technology, 58(22), 9760-9769

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Journal Title:

Environmental Science & Technology
Personal Author:

Zhai, Shixian ; Jacob, Daniel J. ; Franco, Bruno ; Clarisse, Lieven ; Coheur, Pierre ; ... More +

Zhai, Shixian ; Jacob, Daniel J. ; Franco, Bruno ; Clarisse, Lieven ; Coheur, Pierre ; Shah, Viral ; Bates, Kelvin H. ; Lin, Haipeng ; Dang, Ruijun ; Sulprizio, Melissa P. ; Huey, L. Gregory ; Moore, Fred L. ; Jaffe, Daniel A. ; Liao, Hong Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; GML (Global Monitoring Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; GML (Global Monitoring Laboratory) Less -
Description:

Peroxyacetyl nitrate (PAN) is produced in the atmosphere by photochemical oxidation of non-methane volatile organic compounds in the presence of nitrogen oxides (NOx), and it can be transported over long distances at cold temperatures before decomposing thermally to release NOx in the remote troposphere. It is both a tracer and a precursor for transpacific ozone pollution transported from East Asia to North America. Here, we directly demonstrate this transport with PAN satellite observations from the infrared atmospheric sounding interferometer (IASI). We reprocess the IASI PAN retrievals by replacing the constant prior vertical profile with vertical shape factors from the GEOS-Chem model that capture the contrasting shapes observed from aircraft over South Korea (KORUS-AQ) and the North Pacific (ATom). The reprocessed IASI PAN observations show maximum transpacific transport of East Asian pollution in spring, with events over the Northeast Pacific offshore from the Western US associated in GEOS-Chem with elevated ozone in the lower free troposphere. However, these events increase surface ozone in the US by less than 1 ppbv because the East Asian pollution mainly remains offshore as it circulates the Pacific High.
Source:

Environmental Science & Technology, 58(22), 9760-9769
DOI:

https://doi.org/10.1021/acs.est.4c01980
ISSN:

0013-936X;1520-5851;
Format:

pdf
Publisher:

American Chemical Society (ACS)
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha-512:7b5d25fecc02ff5faec8358c554c9a5a3540dc39ca49583bfb06eca2d5fe55b99dd34e8d2baa69abc4816d533e230b95a7ba5bea2c3bbb56d82b0e2ebc9d176d
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https://repository.library.noaa.gov/view/noaa/68506/noaa_68506_DS1.pdf
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Transpacific Transport of Asian Peroxyacetyl Nitrate (PAN) Observed from Satellite: Implications for Ozone

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