Searched for: author%3A%22Veefkind%2C+j.+Pepijn%22
(1 - 20 of 42)

Pages

document
Anderson, Lindsey D. (author), Dix, Barbara (author), Schnell, Jordan (author), Yokelson, Robert (author), Veefkind, j. Pepijn (author), Ahmadov, Ravan (author), de Gouw, Joost (author)
Wildfires have become larger and more frequent because of climate change, increasing their impact on air pollution. Air quality forecasts and climate models do not currently account for changes in the composition of wildfire emissions during the commonly observed progression from more flaming to smoldering combustion. Laboratory measurements...
journal article 2023
document
Serrano Calvo, R. (author), Veefkind, j. Pepijn (author), Dix, Barbara (author), de Gouw, Joost (author), Levelt, Pieternel Felicitas (author)
COVID-19 caused a historic collapse in fossil fuel demand, a general decline in economic activity, and hydrocarbon price volatility. This resulted in an unprecedented scenario to evaluate the contribution of the O&amp;G (Oil and Gas) industry NO<sub>2</sub> (nitrogen dioxide) emissions in the Permian basin (United States), currently the...
journal article 2023
document
Martínez-Alonso, S. (author), Veefkind, j. Pepijn (author), Dix, B. (author), Gaubert, B. (author), Theys, N. (author), Granier, C. (author), Soulié, A. (author), Darras, S. (author), Levelt, Pieternel Felicitas (author)
We have analyzed Sentinel-5 Precursor TROPOspheric Monitoring Instrument (TROPOMI) data over the Copperbelt mining region (Democratic Republic of Congo and Zambia). Despite high background values, annual 2019–2022 means of TROPOMI NO<sub>2</sub> (nitrogen dioxide) show local enhancements consistent with six point sources (four copper/cobalt...
journal article 2023
document
Veefkind, j. Pepijn (author), Serrano Calvo, R. (author), de Gouw, J. (author), Dix, B. (author), Schneising, O. (author), Buchwitz, M. (author), Barré, J. (author), van der A, R. J. (author), Liu, M. (author), Levelt, Pieternel Felicitas (author)
Emissions of methane (CH<sub>4</sub>) in the Permian basin (USA) have been derived for 2019 and 2020 from satellite observations of the Tropospheric Monitoring Instrument (TROPOMI) using the divergence method, in combination with a data driven method to estimate the background column densities. The resulting CH<sub>4</sub> emission data,...
journal article 2023
document
Michailidis, Konstantinos (author), Veefkind, j. Pepijn (author), Mona, Lucia (author), Tsikoudi, Ioanna (author), Mamouri, Rodanthi Elisavet (author), Bortoli, Daniele (author), Papayannis, Alexandros (author), Alados-Arboledas, Lucas (author), Romano, Salvatore (author)
The purpose of this study is to investigate the ability of the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) to derive accurate geometrical features of lofted aerosol layers, selecting the Mediterranean Basin as the study area. Comparisons with ground-based correlative measurements constitute a key component in the validation of...
journal article 2023
document
Dix, Barbara (author), Li, Meng (author), Roosenbrand, E.J. (author), Francoeur, Colby (author), Brown, Steven S. (author), Gilman, Jessica B. (author), Hanisco, Thomas F. (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author)
We analyzed observational and model data to study the sources of formaldehyde over oil and gas production regions and to investigate how these observations may be used to constrain oil and gas volatile organic compound (VOC) emissions. The analysis of aircraft and satellite data consistently found that formaldehyde over oil and gas production...
journal article 2023
document
Dix, Barbara (author), Francoeur, Colby (author), Li, Meng (author), Serrano Calvo, R. (author), Levelt, Pieternel Felicitas (author), Veefkind, j. Pepijn (author), McDonald, Brian C. (author), De Gouw, Joost (author)
The production of crude oil and natural gas is associated with emissions of air pollutants, such as nitrogen oxides (NOx = NO + NO2) and volatile organic compounds, which are precursors for the formation of ground-level ozone. Knowledge of these emissions is critical to the understanding and mitigation of local air quality. NOx emissions from...
journal article 2022
document
Cooper, Matthew J. (author), Martin, Randall V. (author), Hammer, Melanie S. (author), Levelt, Pieternel Felicitas (author), Veefkind, j. Pepijn (author), Lamsal, Lok N. (author), Krotkov, Nickolay A. (author), Brook, Jeffrey R. (author), McLinden, Chris A. (author)
Nitrogen dioxide (NO<sub>2</sub>) is an important contributor to air pollution and can adversely affect human health<sup>1–9</sup>. A decrease in NO<sub>2</sub> concentrations has been reported as a result of lockdown measures to reduce the spread of COVID-19<sup>10–20</sup>. Questions remain, however, regarding the relationship of satellite...
journal article 2022
document
Van Geffen, Jos (author), Eskes, Henk (author), Compernolle, Steven (author), Pinardi, Gaia (author), Verhoelst, Tijl (author), Lambert, Jean Christopher (author), Sneep, Maarten (author), Linden, Mark Ter (author), Veefkind, j. Pepijn (author)
Nitrogen dioxide (NO2) is one of the main data products measured by the Tropospheric Monitoring Instrument (TROPOMI) on the Sentinel-5 Precursor (S5P) satellite, which combines a high signal-to-noise ratio with daily global coverage and high spatial resolution. TROPOMI provides a valuable source of information to monitor emissions from local...
journal article 2022
document
Levelt, Pieternel Felicitas (author), Stein Zweers, Deborah C. (author), Aben, Ilse (author), Bauwens, Maite (author), Borsdorff, Tobias (author), De Smedt, Isabelle (author), Eskes, Henk J. (author), Lerot, Christophe (author), Veefkind, j. Pepijn (author)
The aim of this paper is to highlight how TROPOspheric Monitoring Instrument (TROPOMI) trace gas data can best be used and interpreted to understand event-based impacts on air quality from regional to city scales around the globe. For this study, we present the observed changes in the atmospheric column amounts of five trace gases (NO2, SO2,...
journal article 2022
document
Sun, J. (author), Veefkind, j. Pepijn (author), Van Velthoven, Peter (author), Levelt, Pieternel Felicitas (author)
Quantitative measurements of aerosol absorptive properties, e.g., the absorbing aerosol optical depth (AAOD) and the single scattering albedo (SSA), are important to reduce uncertainties of aerosol climate radiative forcing assessments. Currently, global retrievals of AAOD and SSA are mainly provided by the ground-based aerosol robotic...
journal article 2021
document
Liu, Mengyao (author), van der A, Ronald (author), van Weele, Michiel (author), Eskes, Henk (author), Lu, Xiao (author), Veefkind, j. Pepijn (author), de Laat, Jos (author), Kong, Hao (author), Wang, Jingxu (author)
We present a new divergence method to estimated methane (CH<sub>4</sub>) emissions from satellite observed mean mixing ratio of methane (XCH<sub>4</sub>) by deriving the regional enhancement of XCH<sub>4</sub> in the Planetary Boundary Layer (PBL). The applicability is proven by comparing the estimated emissions with its known emission...
journal article 2021
document
Verhoelst, Tijl (author), Compernolle, Steven (author), Pinardi, Gaia (author), Lambert, Jean Christopher (author), Eskes, Henk J. (author), Eichmann, Kai Uwe (author), Levelt, Pieternel Felicitas (author), Liu, Cheng (author), Veefkind, j. Pepijn (author)
This paper reports on consolidated ground-based validation results of the atmospheric NO2 data produced operationally since April 2018 by the TROPOspheric Monitoring Instrument (TROPOMI) on board of the ESA/EU Copernicus Sentinel-5 Precursor (S5P) satellite. Tropospheric, stratospheric, and total NO2 column data from S5P are compared to...
journal article 2021
document
Van Der Velde, Ivar R. (author), Van Der Werf, Guido R. (author), Houweling, Sander (author), Eskes, Henk J. (author), Veefkind, j. Pepijn (author), Borsdorff, Tobias (author), Aben, Ilse (author)
The global fire emission inventories depend on ground and airborne measurements of species-specific emission factors (EFs), which translate dry matter losses due to fires to actual trace gas and aerosol emissions. The EFs of nitrogen oxides (NOx) and carbon monoxide (CO) can function as a proxy for combustion efficiency to distinguish flaming...
journal article 2021
document
Bauwens, M. (author), Compernolle, S. (author), Stavrakou, T. (author), Müller, J. F. (author), van Gent, J. (author), Eskes, H. (author), Levelt, Pieternel Felicitas (author), van der A, R. (author), Veefkind, j. Pepijn (author)
Spaceborne NO<sub>2</sub> column observations from two high-resolution instruments, Tropospheric Monitoring Instrument (TROPOMI) on board Sentinel-5 Precursor and Ozone Monitoring Instrument (OMI) on Aura, reveal unprecedented NO<sub>2</sub> decreases over China, South Korea, western Europe, and the United States as a result of public health...
journal article 2020
document
Judd, Laura M. (author), Al-Saadi, Jassim A. (author), Szykman, James J. (author), Valin, Lukas C. (author), Janz, Scott J. (author), Kowalewski, Matthew G. (author), Eskes, Henk J. (author), Veefkind, j. Pepijn (author), Cede, Alexander (author)
Airborne and ground-based Pandora spectrometer NOspan classCombining double low line"inline-formula"2/span column measurements were collected during the 2018 Long Island Sound Tropospheric Ozone Study (LISTOS) in the New York City/Long Island Sound region, which coincided with early observations from the Sentinel-5P TROPOspheric Monitoring...
journal article 2020
document
Dix, Barbara (author), de Bruin, Joep (author), Roosenbrand, E.J. (author), Vlemmix, T. (author), Francoeur, Colby (author), Gorchov-Negron, Alan (author), McDonald, Brian (author), Zhizhin, Mikhail (author), Elvidge, Christopher (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author), de Gouw, Joost (author)
U.S. oil and natural gas production volumes have grown by up to 100% in key production areas between January 2017 and August 2019. Here we show that recent trends are visible from space and can be attributed to drilling, production, and gas flaring activities. By using oil and gas activity data as predictors in a multivariate regression to...
journal article 2020
document
Nanda, S. (author), de Graaf, M. (author), Veefkind, j. Pepijn (author), Sneep, Maarten (author), Sun, J. (author), Levelt, Pieternel Felicitas (author)
The TROPOspheric Monitoring Instrument (TROPOMI) level-2 aerosol layer height (ALH) product has now been released to the general public. This product is retrieved using TROPOMI's measurements of the oxygen A-band, radiative transfer model (RTM) calculations augmented by neural networks and an iterative optimal estimation technique. The...
journal article 2020
document
Sterckx, Sindy (author), Brown, Ian (author), Kääb, Andreas (author), Krol, Maarten (author), Morrow, Rosemary (author), Veefkind, j. Pepijn (author), Boersma, K. Folkert (author), De Mazière, Martine (author), Fox, Nigel (author), Thorne, Peter (author)
Societal dependence on, and commercial and scientific exploitation of Earth-Oriented remote sensing from satellites is growing at an exponential rate. The comprehensive EU Copernicus programme provides a major contribution to the global effort, but even so, to achieve the necessary global and temporal coverage requires synergistic cooperation...
review 2020
document
Griffin, Debora (author), Sioris, Christopher (author), Chen, Jack (author), Dickson, Nolan (author), Kovachik, Andrew (author), De Graaf, Martin (author), Nanda, Swadhin (author), Veefkind, j. Pepijn (author), Dammers, Enrico (author)
Before the launch of the TROPOspheric Monitoring Instrument (TROPOMI), only two other satellite instruments were able to observe aerosol plume heights globally, the Multi-angle Imaging SpectroRadiometer (MISR) and Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP). The TROPOMI aerosol layer height is a potential game changer, since it...
journal article 2020
Searched for: author%3A%22Veefkind%2C+j.+Pepijn%22
(1 - 20 of 42)

Pages