Search Results - "Valks, Pieter"

Estimation of Surface NO2 Concentrations over Germany from TROPOMI Satellite Observations Using a Machine Learning Method by Chan, Ka Lok, Khorsandi, Ehsan, Liu, Song, Baier, Frank, Valks, Pieter

“…In this paper, we present the estimation of surface NO2 concentrations over Germany using a machine learning approach. TROPOMI satellite observations of…”
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Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic by Liu, Song, Valks, Pieter, Beirle, Steffen, Loyola, Diego G.

“…Since its first confirmed case in December 2019, coronavirus disease 2019 (COVID-19) has become a worldwide pandemic with more than 90 million confirmed cases…”
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Lightning‐Produced Nitrogen Oxides Per Flash Length Obtained by Using TROPOMI Observations and the Ebro Lightning Mapping Array by Pérez‐Invernón, Francisco J., Gordillo‐Vázquez, Francisco J., Velde, Oscar, Montanyá, Joan, López Trujillo, Jesús Alberto, Pineda, Nicolau, Huntrieser, Heidi, Valks, Pieter, Loyola, Diego, Seo, Sora, Erbertseder, Thilo

“…Lightning is one of the main sources of NOx in the Earth's atmosphere. However, there is a large variability in NOx production during the lifetime of…”
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Trends of tropical tropospheric ozone from 20 years of European satellite measurements and perspectives for the Sentinel-5 Precursor by Heue, Klaus-Peter, Coldewey-Egbers, Melanie, Delcloo, Andy, Lerot, Christophe, Loyola, Diego, Valks, Pieter, van Roozendael, Michel

“…In preparation of the TROPOMI/S5P launch in early 2017, a tropospheric ozone retrieval based on the convective cloud differential method was developed. For…”
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An improved air mass factor calculation for nitrogen dioxide measurements from the Global Ozone Monitoring Experiment-2 (GOME-2) by Liu, Song, Valks, Pieter, Pinardi, Gaia, Xu, Jian, Argyrouli, Athina, Lutz, Ronny, Tilstra, L. Gijsbert, Huijnen, Vincent, Hendrick, François, Van Roozendael, Michel

“…An improved tropospheric nitrogen dioxide (NO2) retrieval algorithm from the Global Ozone Monitoring Experiment-2 (GOME-2) instrument based on air mass factor…”
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Glyoxal tropospheric column retrievals from TROPOMI – multi-satellite intercomparison and ground-based validation by Lerot, Christophe, Hendrick, François, Van Roozendael, Michel, Alvarado, Leonardo M. A, Richter, Andreas, De Smedt, Isabelle, Theys, Nicolas, Vlietinck, Jonas, Yu, Huan, Van Gent, Jeroen, Stavrakou, Trissevgeni, Müller, Jean-François, Valks, Pieter, Loyola, Diego, Irie, Hitoshi, Kumar, Vinod, Wagner, Thomas, Schreier, Stefan F, Sinha, Vinayak, Wang, Ting, Wang, Pucai, Retscher, Christian

“…We present the first global glyoxal (CHOCHO) tropospheric column product derived from the TROPOspheric Monitoring Instrument (TROPOMI) on board the Sentinel-5…”
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Volcanic SO2 by UV-TIR satellite retrievals: validation by using ground-based network at Mt. Etna by Claudia Spinetti, Giuseppe Giovanni Salerno, Tommaso Catalbiano, Elisa Carboni, Lieven Clarisse, Stefano Corradini, Roy Gordon Grainger, Pascal Andre Hedelt, Maria Elissavet Koukouli, Luca Merucci, Richard Siddans, Lucia Tampellini, Nicolas Theys, Pieter Valks, Claus Zehner

“…Mt. Etna volcano in Italy is one of the most active degassing volcanoes worldwide, emitting a mean of 1.7 Mt/year of Sulphur Dioxide (SO2) in quiescent…”
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Spatio-temporal variations in NO2 and SO2 over Shanghai and Chongming Eco-Island measured by Ozone Monitoring Instrument (OMI) during 2008–2017 by Xue, Ruibin, Wang, Shanshan, Li, Danran, Zou, Zhong, Chan, Ka Lok, Valks, Pieter, Saiz-Lopez, Alfonso, Zhou, Bin

“…High resolution satellite maps are useful for the identification of pollution hotspots. In this work, nitrogen dioxide (NO2) and sulfur dioxide (SO2)…”
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TROPOspheric Monitoring Instrument observations of total column water vapour: Algorithm and validation by Chan, Ka Lok, Xu, Jian, Slijkhuis, Sander, Valks, Pieter, Loyola, Diego

“…In this paper, we present the total column water vapour (TCWV) retrieval for the TROPOspheric Monitoring Instrument (TROPOMI) observations in the visible blue…”
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Tropospheric NO.sub.2 retrieval algorithm for geostationary satellite instruments: applications to GEMS by Seo, Sora, Valks, Pieter, Lutz, Ronny, Heue, Klaus-Peter, Hedelt, Pascal, Molina García, Víctor, Loyola, Diego, Lee, Hanlim, Kim, Jhoon

“…In this study, we develop an advanced retrieval algorithm for tropospheric nitrogen dioxide (NO.sub.2) from the geostationary satellite instruments and apply…”
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Tropospheric NO 2 retrieval algorithm for geostationary satellite instruments: applications to GEMS by Seo, Sora, Valks, Pieter, Lutz, Ronny, Heue, Klaus-Peter, Hedelt, Pascal, Molina García, Víctor, Loyola, Diego, Lee, Hanlim, Kim, Jhoon

“…In this study, we develop an advanced retrieval algorithm for tropospheric nitrogen dioxide (NO2) from the geostationary satellite instruments and apply it to…”
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NO2 Retrieval from the Environmental Trace Gases Monitoring Instrument (EMI): Preliminary Results and Intercomparison with OMI and TROPOMI by Cheng, Liangxiao, Tao, Jinhua, Valks, Pieter, Yu, Chao, Liu, Song, Wang, Yapeng, Xiong, Xiaozhen, Wang, Zifeng, Chen, Liangfu

“…Onboard the Chinese GaoFen-5 (GF5) satellite, the Environmental trace gases Monitoring Instrument (EMI) is a nadir-viewing wide-field spectrometer that was…”
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Satellite NO2 Retrieval Complicated by Aerosol Composition over Global Urban Agglomerations: Seasonal Variations and Long-Term Trends (2001–2018) by Liu, Song, Valks, Pieter, Curci, Gabriele, Chen, Yuyang, Shu, Lei, Jin, Jianbing, Sun, Shuai, Pu, Dongchuan, Li, Xicheng, Li, Juan, Zuo, Xiaoxing, Fu, Weitao, Li, Yali, Zhang, Peng, Yang, Xin, Fu, Tzung-May, Zhu, Lei

“…Tropospheric nitrogen dioxide (NO2) poses a serious threat to the environmental quality and public health. Satellite NO2 observations have been continuously…”
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Satellite NO 2 Retrieval Complicated by Aerosol Composition over Global Urban Agglomerations: Seasonal Variations and Long-Term Trends (2001-2018) by Liu, Song, Valks, Pieter, Curci, Gabriele, Chen, Yuyang, Shu, Lei, Jin, Jianbing, Sun, Shuai, Pu, Dongchuan, Li, Xicheng, Li, Juan, Zuo, Xiaoxing, Fu, Weitao, Li, Yali, Zhang, Peng, Yang, Xin, Fu, Tzung-May, Zhu, Lei

“…Tropospheric nitrogen dioxide (NO ) poses a serious threat to the environmental quality and public health. Satellite NO observations have been continuously…”
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Total column water vapor retrieval for Global Ozone Monitoring Experience-2 (GOME-2) visible blue observations by Chan, Ka Lok, Valks, Pieter, Slijkhuis, Sander, Köhler, Claas, Loyola, Diego

“…We present a new total column water vapor (TCWV) retrieval algorithm in the visible blue spectral band for the Global Ozone Monitoring Experience 2 (GOME-2)…”
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TROPOMI/S5P total ozone column data: global ground-based validation and consistency with other satellite missions by Garane, Katerina, Koukouli, Maria-Elissavet, Verhoelst, Tijl, Lerot, Christophe, Heue, Klaus-Peter, Fioletov, Vitali, Balis, Dimitrios, Bais, Alkiviadis, Bazureau, Ariane, Dehn, Angelika, Goutail, Florence, Granville, Jose, Griffin, Debora, Hubert, Daan, Keppens, Arno, Lambert, Jean-Christopher, Loyola, Diego, McLinden, Chris, Pazmino, Andrea, Pommereau, Jean-Pierre, Redondas, Alberto, Romahn, Fabian, Valks, Pieter, Van Roozendael, Michel, Xu, Jian, Zehner, Claus, Zerefos, Christos, Zimmer, Walter

“…In October 2017, the Sentinel-5 Precursor (S5P) mission was launched, carrying the TROPOspheric Monitoring Instrument (TROPOMI), which provides a daily global…”
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Monitoring and assimilation tests with TROPOMI data in the CAMS system: near-real-time total column ozone by Inness, Antje, Flemming, Johannes, Heue, Klaus-Peter, Lerot, Christophe, Loyola, Diego, Ribas, Roberto, Valks, Pieter, van Roozendael, Michel, Xu, Jian, Zimmer, Walter

“…The TROPOspheric Monitoring Instrument (TROPOMI) on board the Sentinel-5 Precursor (S5P) satellite launched in October 2017 yields a wealth of atmospheric…”
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Tropospheric NO2 retrieval algorithm for geostationary satellite instruments: applications to GEMS by Seo, Sora, Valks, Pieter, Lutz, Ronny, Klaus-Peter Heue, Hedelt, Pascal, Víctor Molina García, Loyola, Diego, Lee, Hanlim, Kim, Jhoon

“…In this study, we develop an advanced retrieval algorithm for tropospheric nitrogen dioxide (NO2) from the geostationary satellite instruments and apply it to…”
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An improved total and tropospheric NO 2 column retrieval for GOME-2 by Liu, Song, Valks, Pieter, Pinardi, Gaia, De Smedt, Isabelle, Yu, Huan, Beirle, Steffen, Richter, Andreas

“…An improved algorithm for the retrieval of total and tropospheric nitrogen dioxide (NO2) columns from the Global Ozone Monitoring Experiment-2 (GOME-2) is…”
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An improved total and tropospheric NO.sub.2 column retrieval for GOME-2 by Liu, Song, Valks, Pieter, Pinardi, Gaia, De Smedt, Isabelle, Yu, Huan, Beirle, Steffen, Richter, Andreas

“…An improved algorithm for the retrieval of total and tropospheric nitrogen dioxide (NO.sub.2) columns from the Global Ozone Monitoring Experiment-2 (GOME-2) is…”
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