Two Air Quality Regimes in Total Column NO2 over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Thompson, A. M.; Kollonige, Debra E.; Stauffer, Ryan M.; Kotsakis, Alexander; Abuhassan, Nader; Lamsal, L. N.; Swap, R. J.; Blake, Donald R.; Townsend‐Small, Amy; WECHT, HOLLI D

doi:10.1002/essoar.10511687.1

Cited by 2 publications

(5 citation statements)

References 41 publications

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“…The satellite footprint size at nadir is ∼13 × 24 km for OMI and 3.5 × 7.2 km for TROPOMI during field campaigns in 2018 through July 2019. In general, agreement of Pandora TC NO 2 is closer to TROPOMI than for OMI, especially if the larger satellite pixel includes considerable spatial heterogeneity (Thompson, 2020;Thompson et al, 2020). • At very polluted locations, as TC NO 2 measured from the surface increases, there tends to be greater disagreement with the corresponding satellite TC NO 2 (Herman et al, 2019).…”

Section: Remote Sensing Studies Of Coastal Air Quality/overview Of Re...mentioning

confidence: 99%

“…Overpasses for both satellites occur early afternoon approximately between 1300 and 1400 LT. OMI operates with FOVs varying in size from ∼13 km × 24 km near nadir to ∼24 km × 160 km at the outermost edges of the swath, observing direct and back scattered solar radiation between 264 and 504 nm needed for retrieving NO 2 column (total, tropospheric, and stratospheric) densities (Boersma et al, 2011;Levelt et al, 2006Levelt et al, , 2018. NASA OMI NO 2 Standard Product, V3.1 (OMNO2 product; Krotkov et al, 2017), validated in Choi et al (2020), was available for preliminary reports on SCOAPE (Thompson, 2020;Thompson et al, 2020).…”

Section: Omi and Tropomimentioning

confidence: 99%

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Two Air Quality Regimes in Total Column NO₂ Over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Thompson

Kollonige

Stauffer

et al. 2023

Earth and Space Science

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The Satellite Coastal and Oceanic Atmospheric Pollution Experiment (SCOAPE) cruise in the Gulf of Mexico was conducted in May 2019 by NASA and the Bureau of Ocean Energy Management to determine the feasibility of using satellite data to measure air quality in a region of concentrated oil and natural gas (ONG) operations. SCOAPE addressed both technological and scientific issues related to measuring NO2 columns over the outer continental shelf. Featured were nitrogen dioxide (NO2) instruments (Pandora, Teledyne API analyzer) at Cocodrie, LA (29.26°, −90.66°), and on the Research Vessel Point Sur operating off the Louisiana coast with measurements of ozone, carbon monoxide, and volatile organic compounds (VOCs). The findings: (a) all NO2 observations revealed two atmospheric regimes over the Gulf, the first influenced by tropical air in 10–14 May, the second influenced by flow from urban areas on 15–17 May; (b) comparisons of OMI v4 and TROPOMI v1.3 TC (total column) NO2 data with shipboard Pandora NO2 column observations averaged 13% agreement with the largest difference during 15–17 May (∼20%). At Cocodrie, the satellite–Pandora agreement was ∼5%. (c) Three new‐model Pandora instruments displayed a TC NO2 precision of 0.01 Dobson Units (∼5%); (d) regions of smaller, older natural gas operations showed high methane readings from leakage; elevated VOCs were also detected. Neither satellite nor spectrometer captured the magnitude of ambient NO2 variability near ONG platforms. Given an absence of regular air quality monitoring over the Gulf of Mexico, SCOAPE data constitute a baseline against which future observations can be compared.

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Section: Remote Sensing Studies Of Coastal Air Quality/overview Of Re...mentioning

confidence: 99%

Section: Omi and Tropomimentioning

confidence: 99%

Two Air Quality Regimes in Total Column NO₂ Over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Thompson

Kollonige

Stauffer

et al. 2023

Earth and Space Science

View full text Add to dashboard Cite

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“…NASA and BOEM carried out a feasibility study from 2017 to 2020 to determine whether satellite data could be used to monitor NO 2 over the GOM and discriminate regional sources and/or resolve pollution from individual platforms. Preliminary results were summarized in two documents by Duncan (2020) and Thompson et al (2020). These were followed by detailed reports on a 2019 field campaign (Satellite Coastal and Oceanic Atmospheric Pollution Experiment), SCOAPE-I (Thompson et al, 2020(Thompson et al, , 2023, along the Louisiana coast.…”

Section: Introductionmentioning

confidence: 99%

“…Preliminary results were summarized in two documents by Duncan (2020) and Thompson et al (2020). These were followed by detailed reports on a 2019 field campaign (Satellite Coastal and Oceanic Atmospheric Pollution Experiment), SCOAPE-I (Thompson et al, 2020(Thompson et al, , 2023, along the Louisiana coast.…”

Section: Introductionmentioning

confidence: 99%

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Satellite NO₂ Trends and Hotspots Over Offshore Oil and Gas Operations in the Gulf of Mexico

Fedkin,

Stauffer,

Thompson

et al. 2024

Earth and Space Science

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The Outer Continental Shelf of the Gulf of Mexico (GOM) is populated with numerous oil and natural gas (ONG) platforms which produce NOx (NOx = NO + NO2), a major component of air pollution. The Bureau of Ocean Energy Management (BOEM) is mandated to ensure that the air quality of coastal states is not degraded by these emissions. As part of a NASA‐BOEM collaboration, we conducted a satellite data‐based analysis of nitrogen dioxide (NO2) patterns and trends in the GOM. Data from the OMI and TROPOMI sensors were used to obtain 18+ year records of tropospheric column (TrC) NO2 in three GOM regions: (a) Houston urban area, (b) near shore area off the Louisiana coast, and a (c) deepwater area off the Louisiana coast. The 2004–2022 time series show a decreasing trend for the urban (−0.027 DU/decade) and near shore (−0.0022 DU/decade) areas, and an increasing trend (0.0019 DU/decade) for the deepwater area. MERRA‐2 wind and TROPOMI NO2 data were used to reveal several NO2 hotspots (up to 25% above background values) under calm wind conditions near individual platforms. The NO2 signals from these deepwater platforms and the high density of shallow water platforms closer to shore were confirmed by TrC NO2 anomalies of up to 10%, taking into account the monthly TrC NO2 climatology over the GOM. The results presented in this study establish a baseline for future estimates of emissions from the ONG hotspots and provide a methodology for analyzing NO2 measurements from the new geostationary TEMPO instrument.

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Two Air Quality Regimes in Total Column NO2 over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Cited by 2 publications

References 41 publications

Two Air Quality Regimes in Total Column NO₂ Over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Two Air Quality Regimes in Total Column NO₂ Over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Satellite NO₂ Trends and Hotspots Over Offshore Oil and Gas Operations in the Gulf of Mexico

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Two Air Quality Regimes in Total Column NO2 over the Gulf of Mexico in May 2019: Shipboard and Satellite Views

Cited by 2 publications

References 41 publications