Identification of the roles of urban plume and local chemical production in ozone episodes observed in Long Island Sound during LISTOS 2018: Implications for ozone control strategies

Kaihui Zhao; Yonghua Wu; Jianping Huang; Guillaume Gronoff; Timothy A Berkoff; Mark Arend; Fred Moshary

doi:10.1016/j.envint.2023.107887

Identification of the roles of urban plume and local chemical production in ozone episodes observed in Long Island Sound during LISTOS 2018: Implications for ozone control strategies

Environ Int. 2023 Apr:174:107887. doi: 10.1016/j.envint.2023.107887. Epub 2023 Mar 21.

Authors

Kaihui Zhao¹, Yonghua Wu², Jianping Huang³, Guillaume Gronoff⁴, Timothy A Berkoff⁵, Mark Arend², Fred Moshary²

Affiliations

¹ Yunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Greater Mekong Subregion, Yunnan University, Kunming 650091, China.
² Optical Remote Sensing Lab, the City College of New York (CCNY), New York, NY 10031, USA.
³ NOAA-NCEP Environmental Modeling Center and Lynker, College Park, MD 720740, USA. Electronic address: jianping.huang@noaa.gov.
⁴ NASA Langley Research Center, Hampton, VA 23681, USA; Science Systems Applications, Inc. (SSAI), Hampton, VA 23681, USA.
⁵ NASA Langley Research Center, Hampton, VA 23681, USA.

PMID: 37001216
DOI: 10.1016/j.envint.2023.107887

Abstract

Long Island Sound (LIS) frequently experiences ozone (O₃) exceedance events that surpass national ambient air quality standards (NAAQS) due to complex driving factors. The underlying mechanisms governing summertime O₃ pollution are investigated through collaborative observations from lidar remote sensing and ground samplers during the 2018 LIS Tropospheric O₃ Study (LISTOS). Regional transport and local chemical reactions are identified as the two key driving factors behind the observed O₃ episodes in LIS. An enhanced laminar structure is observed in the O₃ vertical structure in the atmospheric boundary layer (i.e., 0-2 km layer) for the case dominated by regional transport. An O₃ formation regime shift is found in ozone-precursor sensitivity (OPS) for the O₃ exceedance event dominated by regional transport with NO_x-enriched air mass transport from the New York City (NYC) urban area to LIS. Furthermore, the Integrated Process Rate (IPR) analysis demonstrates that transport from the NYC urban area contributed 40% and 27.1% of surface O₃ enhancement to the cases dominated by regional transport and local production, respectively. This study provides scientific evidence to uncovers two key processes that govern summertime O₃ pollution over LIS and can help to improve emission control strategies to meet the attainment standards for ambient O₃ levels over LIS and other similar coastal areas.

Keywords: Chemical reaction; Long Island Sound; O(3) pollution; O(3) precursor sensitivity; Regional transport.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't

MeSH terms

Air Pollutants* / analysis
Air Pollution* / analysis
China
Environmental Monitoring
New York City
Ozone* / analysis

Substances

Ozone
Air Pollutants