Searched for: author:"Veefkind, j. Pepijn"
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de Gouw, Joost A. (author), Veefkind, j. Pepijn (author), Roosenbrand, Esther (author), Dix, Barbara (author), Lin, John C. (author), Landgraf, Jochen (author), Levelt, Pieternel Felicitas (author)
Production of oil and natural gas in North America is at an all-time high due to the development and use of horizontal drilling and hydraulic fracturing. Methane emissions associated with this industrial activity are a concern because of the contribution to climate radiative forcing. We present new measurements from the space-based...
journal article 2020
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Dix, Barbara (author), de Bruin, Joep (author), Roosenbrand, Esther (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
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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
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Liu, Fei (author), Page, Aaron (author), Strode, Sarah A. (author), Yoshida, Yasuko (author), Choi, Sungyeon (author), Zheng, Bo (author), Lamsal, Lok N. (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author)
China's policy interventions to reduce the spread of the coronavirus disease 2019 have environmental and economic impacts. Tropospheric nitrogen dioxide indicates economic activities, as nitrogen dioxide is primarily emitted from fossil fuel consumption. Satellite measurements show a 48% drop in tropospheric nitrogen dioxide vertical column...
journal article 2020
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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
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Ding, J. (author), van der A, R.J. (author), Eskes, H.J. (author), Mijling, B. (author), Stavrakou, T. (author), van Geffen, J. H.G.M. (author), Veefkind, j. Pepijn (author)
During the COVID-19 lockdown (24 January–20 March) in China low air pollution levels were reported in the media as a consequence of reduced economic and social activities. Quantification of the pollution reduction is not straightforward due to effects of transport, meteorology, and chemistry. We have analyzed the NO<sub>x</sub> emission...
journal article 2020
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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
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Van Geffen, Jos (author), Folkert Boersma, K. (author), Eskes, Henk (author), Sneep, Maarten (author), Ter Linden, Mark (author), Zara, Marina (author), Veefkind, j. Pepijn (author)
The Tropospheric Monitoring Instrument (TROPOMI), aboard the Sentinel-5 Precursor (S5P) satellite, launched on 13 October 2017, provides measurements of atmospheric trace gases and of cloud and aerosol properties at an unprecedented spatial resolution of approximately 7 × 3:5 km<sup>2</sup> (approx. 5:5 × 3:5 km<sup>2</sup> as of 6 August...
journal article 2020
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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
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Lorente, A. (author), Boersma, K. F. (author), Eskes, H. J. (author), Veefkind, j. Pepijn (author), van Geffen, J. H.G.M. (author), de Zeeuw, M. B. (author), Denier van der Gon, H. A.C. (author), Beirle, S. (author), Krol, M. C. (author)
Nitrogen dioxide (NO<sub>2</sub>) is a regulated air pollutant that is of particular concern in many cities, where concentrations are high. Emissions of nitrogen oxides to the atmosphere lead to the formation of ozone and particulate matter, with adverse impacts on human health and ecosystems. The effects of emissions are often assessed...
journal article 2019
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Sun, J. (author), Veefkind, j. Pepijn (author), Nanda, S. (author), Van Velthoven, Peter (author), Levelt, Pieternel Felicitas (author)
The purpose of this study is to demonstrate the role of aerosol layer height (ALH) in quantifying the single scattering albedo (SSA) from ultraviolet satellite observations for biomass burning aerosols. In the first experiment, we retrieve SSA by minimizing the near-ultraviolet (near-UV) absorbing aerosol index (UVAI) difference between...
journal article 2019
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Chimot, J.J. (author), Veefkind, j. Pepijn (author), De Haan, Johan F. (author), Stammes, Piet (author), Levelt, Pieternel Felicitas (author)
Global mapping of satellite tropospheric NO<sub>2</sub> vertical column density (VCD), a key gas in air quality monitoring, requires accurate retrievals over complex urban and industrialized areas and under any atmospheric conditions. The high abundance of aerosol particles in regions dominated by anthropogenic fossil fuel combustion, e.g....
journal article 2019
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Nanda, Swadhin (author), De Graaf, Martin (author), Veefkind, j. Pepijn (author), Ter Linden, Mark (author), Sneep, Maarten (author), De Haan, Johan (author), Levelt, Pieternel Felicitas (author)
To retrieve aerosol properties from satellite measurements of the oxygen A-band in the near-infrared, a line-by-line radiative transfer model implementation requires a large number of calculations. These calculations severely restrict a retrieval algorithm's operational capability as it can take several minutes to retrieve the aerosol layer...
journal article 2019
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Griffin, Debora (author), Zhao, Xiaoyi (author), McLinden, Chris A. (author), Boersma, Folkert (author), Bourassa, Adam (author), Dammers, Enrico (author), Degenstein, Doug (author), Eskes, Henk (author), Veefkind, j. Pepijn (author)
TROPOspheric Monitoring Instrument (TROPOMI), on-board the Sentinel-5 Precurser satellite, is a nadir-viewing spectrometer measuring reflected sunlight in the ultraviolet, visible, near-infrared, and shortwave infrared. From these spectra several important air quality and climate-related atmospheric constituents are retrieved, including nitrogen...
journal article 2019
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Sun, J. (author), Veefkind, j. Pepijn (author), Van Velthoven, Peter (author), Levelt, Pieternel Felicitas (author)
The absorbing aerosol index (AAI) is a qualitative parameter directly calculated from satellite-measured reflectance. Its sensitivity to absorbing aerosols in combination with a long-term data record since 1978 makes it an important parameter for climate research. In this study, we attempt to quantify aerosol absorption by retrieving the...
journal article 2018
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Nanda, S. (author), Veefkind, j. Pepijn (author), De Graaf, Martin (author), Sneep, Maarten (author), Stammes, Piet (author), De Haan, Johan F. (author), Sanders, Abram F.J. (author), Apituley, Arnoud (author), Tuinder, Olaf (author), Levelt, Pieternel Felicitas (author)
This paper presents a weighted least squares approach to retrieve aerosol layer height from top-of-atmosphere reflectance measurements in the oxygen A band (758-770g nm) over bright surfaces. A property of the measurement error covariance matrix is discussed, due to which photons travelling from the surface are given a higher preference over...
journal article 2018
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Kylling, Arve (author), Vandenbussche, Sophie (author), Capelle, Virginie (author), Cuesta, Juan (author), Klüser, Lars (author), Lelli, Luca (author), Popp, Thomas (author), Stebel, Kerstin (author), Veefkind, j. Pepijn (author)
Aerosol-layer height is essential for understanding the impact of aerosols on the climate system. As part of the European Space Agency Aerosol-cci project, aerosol-layer height as derived from passive thermal and solar satellite sensors measurements have been compared with aerosol-layer heights estimated from CALIOP measurements. The Aerosol...
journal article 2018
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Levelt, Pieternel Felicitas (author), Joiner, Joanna (author), Tamminen, Johanna (author), Veefkind, j. Pepijn (author), Bhartia, Pawan K. (author), Zweers, Deborah C.Stein (author), Duncan, Bryan N. (author), Streets, David G. (author), Eskes, Henk (author), Van Der, Ronald A. (author), McLinden, Chris (author), Fioletov, Vitali (author), Carn, Simon (author), De Laat, Jos (author), Deland, Matthew (author), Marchenko, Sergey (author), McPeters, Richard (author), Ziemke, Jerald (author), Fu, Dejian (author), Liu, Xiong (author), Pickering, Kenneth (author), Apituley, Arnoud (author), Abad, Gonzalo González (author), Arola, Antti (author), Boersma, Folkert (author), Miller, Christopher Chan (author), Chance, Kelly (author), de Graaf, M. (author), Hakkarainen, Janne (author), Hassinen, Seppo (author), Ialongo, Iolanda (author), Kleipool, Quintus (author), Krotkov, Nickolay (author), Li, Can (author), Lamsal, Lok (author), Newman, Paul (author), Nowlan, Caroline (author), Suleiman, Raid (author), Tilstra, Lieuwe Gijsbert (author), Torres, Omar (author), Wang, Huiqun (author), Wargan, Krzysztof (author)
This overview paper highlights the successes of the Ozone Monitoring Instrument (OMI) on board the Aura satellite spanning a period of nearly 14 years. Data from OMI has been used in a wide range of applications and research resulting in many new findings. Due to its unprecedented spatial resolution, in combination with daily global coverage,...
review 2018
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Nanda, S. (author), De Graaf, Martin (author), Sneep, Maarten (author), De Haan, Johan F. (author), Stammes, Piet (author), Sanders, Abram F.J. (author), Tuinder, Olaf (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author)
Retrieving aerosol optical thickness and aerosol layer height over a bright surface from measured top-of-atmosphere reflectance spectrum in the oxygen A band is known to be challenging, often resulting in large errors. In certain atmospheric conditions and viewing geometries, a loss of sensitivity to aerosol optical thickness has been...
journal article 2018
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Schenkeveld, V. M.Erik (author), Jaross, Glen (author), Marchenko, Sergey (author), Haffner, David (author), Kleipool, Quintus L. (author), Rozemeijer, Nico C. (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author)
The Dutch-Finnish Ozone Monitoring Instrument (OMI) is an imaging spectrograph flying on NASA's EOS Aura satellite since 15 July 2004. OMI is primarily used to map trace-gas concentrations in the Earth's atmosphere, obtaining mid-resolution (0.4-0.6 nm) ultraviolet-visible (UV-VIS; 264-504 nm) spectra at multiple (30-60) simultaneous fields...
journal article 2017
Searched for: author:"Veefkind, j. Pepijn"
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