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Tang, A.C.I. (author), Flechard, C.R. (author), Arriga, N. (author), Papale, D. (author), Stoy, P.C. (author), Buchmann, N. (author), Cuntz, M. (author), Douros, J. (author), Fares, S. (author), Knohl, A. (author), Šigut, L. (author), Simioni, G. (author), Timmermans, R.M.A. (author), Grünwald, T. (author), Ibrom, A. (author), Loubet, B. (author), Mammarella, I. (author), Belelli Marchesini, L. (author), Nilsson, M. (author), Peichl, M. (author), Rebmann, C. (author), Schmidt, M. (author), Bernhofer, C. (author), Berveiller, D. (author), Cremonese, E. (author), El-Madany, T.S. (author), Gharun, M. (author), Gianelle, D. (author), Hörtnagl, L. (author), Roland, M. (author), Varlagin, A. (author), Fu, Z. (author), Heinesch, B. (author), Janssens, I. (author), Kowalska, N. (author), Dušek, J. (author), Gerosa, G. (author), Mölder, M. (author), Tuittila, E.S. (author), Loustau, D. (author)Carbon dioxide (CO2) uptake by plant photosynthesis, referred to as gross primary production (GPP) at the ecosystem level, is sensitive to environmental factors, including pollutant exposure, pollutant uptake, and changes in the scattering of solar shortwave irradiance (SWin) - the energy source for photosynthesis. The 2020 spring lockdown due...article 2023
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Jin, J. (author), Pang, M. (author), Segers, A. (author), Han, W. (author), Fang, L. (author), Li, B. (author), Feng, H. (author), Lin, H.X. (author), Liao, H. (author)Last spring, super dust storms reappeared in East Asia after being absent for one and a half decades. The event caused enormous losses in both Mongolia and China. Accurate simulation of such super sandstorms is valuable for the quantification of health damage, aviation risks, and profound impacts on the Earth system, but also to reveal the...article 2022
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Chen, Y. (author), Cheng, Y. (author), Ma, N. (author), Wei, C. (author), Ran, L. (author), Wolke, R. (author), Gross, J. (author), Wang, Q. (author), Pozzer, A. (author), van der Gon, H.A.C.D. (author), Spindler, G. (author), Lelieveld, J. (author), Tegen, I. (author), Su, H. (author), Wiedensohler, A. (author)Natural sea-salt aerosols, when interacting with anthropogenic emissions, can enhance the formation of particulate nitrate. This enhancement has been suggested to increase the direct radiative forcing of nitrate, called the "massenhancement effect". Through a size-resolved dynamic mass transfer modeling approach, we show that interactions with...article 2020
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Peters, E. (author), Ostendorf, M. (author), Bösch, T. (author), Seyler, A. (author), Schönhardt, A. (author), Schreier, S.F. (author), Henzing, J.S. (author), Wittrock, F. (author), Richter, A. (author), Vrekoussis, M. (author), Burrows, J.P. (author)A novel imaging-DOAS (differential optical absorption spectroscopy) instrument IMPACT (Imaging MaPper for AtmospheriC observaTions) is presented combining full-azimuthal pointing (360◦) with a large vertical coverage (∼41◦). Complete panoramic scans are acquired at a temporal resolution of ∼15min, enabling the retrieval of NO2 vertical profiles...article 2019
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Jin, J. (author), Segers, A.J. (author), Heemink, A. (author), Yoshida, M. (author), Han, W. (author), Lin, H.X. (author)Aerosol optical depths (AODs) from the new Himawari-8 satellite instrument have been assimilated in a dust simulation model over East Asia. This advanced geostationary instrument is capable of monitoring the East Asian dust storms which usually have great spatial and temporal variability. The quality of the data has been verified through a...article 2019
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Li, H. (author), Meier, F. (author), Lee, X. (author), Chakraborty, T. (author), Liu, J. (author), Schaap, M. (author), Sodoudi, S. (author)Urban Heat Island (UHI) and Urban Pollution Island (UPI) are two major problems of the urban environment and have become more serious with rapid urbanization. Since UHI and UPI can interact with each other, these two issues should be studied concurrently for a better urban environment. This study investigated the interaction between the UHI and...article 2018
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de Leeuw, G. (author), Holzer-Popp, T. (author), Bevan, S. (author), Davies, W.H. (author), Descloitres, J. (author), Grainger, R.G. (author), Griesfeller, J. (author), Heckel, A. (author), Kinne, S. (author), Klüser, L. (author), Kolmonen, P. (author), Litvinov, P. (author), Martynenko, D. (author), North, P. (author), Ovigneur, B. (author), Pascal, N. (author), Poulsen, C. (author), Ramon, D. (author), Schulz, M. (author), Siddans, R. (author), Sogacheva, L. (author), Tanré, D. (author), Thomas, G.E. (author), Virtanen, T.H. (author), von Hoyningen Huene, W. (author), Vountas, M. (author), Pinnock, S. (author)Satellite data are increasingly used to provide observation-based estimates of the effects of aerosols on climate. The Aerosol-cci project, part of the European Space Agency's Climate Change Initiative (CCI), was designed to provide essential climate variables for aerosols from satellite data. Eight algorithms, developed for the retrieval of...article 2015
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van Noije, T.P.C. (author), le Sager, P. (author), Segers, A.J. (author), van Velthoven, P.F.J. (author), Krol, M.C. (author), Hazeleger, W. (author), Williams, A.G. (author), Chambers, S.D. (author)We have integrated the atmospheric chemistry and transport model TM5 into the global climate model EC-Earth version 2.4. We present an overview of the TM5 model and the two-way data exchange between TM5 and the IFS model from the European Centre for Medium-Range Weather Forecasts (ECMWF), the atmospheric general circulation model of EC-Earth. In...article 2014
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Li, Y. (author), Xue, Y. (author), de Leeuw, G. (author), Li, C. (author), Yang, L. (author), Hou, T. (author), Marir, F. (author)An algorithm for the land aerosol and bidirectional reflectance inversion by times series technique (LABITS) is proposed and applied to data from the National Oceanic and Atmospheric Administration (NOAA) advanced very high resolution radiometer (AVHRR). The surface reflectance and aerosol optical depth are inverted from AVHRR Channel 1 data...article 2013
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Mei, L. (author), Xue, Y. (author), de Leeuw, G. (author), von Hoyningen-Huene, W. (author), Kokhanovsky, A.A. (author), Istomina, L. (author), Guang, J. (author), Burrows, J.P. (author)The Arctic is vulnerable to the long-term transport of aerosols because they affect the surface albedo when particles are deposited on snow and ice. However, aerosol observations for this area are sparse and hence there is considerable uncertainty in the knowledge on the properties of the Arctic aerosol. Atmospheric remote sensing using...article 2013
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Mei, L. (author), Xue, Y. (author), de Leeuw, G. (author), Holzer-Popp, T. (author), Guang, J. (author), Li, Y. (author), Yang, L. (author), Xu, H. (author), Xu, X. (author), Li, C. (author), Wang, Y. (author), Wu, C. (author), Hou, T. (author), He, X. (author), Liu, J. (author), Dong, J. (author), Chen, Z. (author)A novel approach for the joint retrieval of aerosol optical depth (AOD) and aerosol type, using Meteosat Second Generation-Spinning Enhanced Visible and Infrared Imagers (MSG/SEVIRI) observations in two solar channels, is presented. The retrieval is based on a Time Series (TS) technique, which makes use of the two visible bands at 0.6 μm and 0.8...article 2012
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Rodríguez, E. (author), Toledano, C. (author), Cachorro, V. (author), de Leeuw, G. (author), de Frutos, A. (author), Gausa, M. (author), Holben, B. (author)Aerosol concentration and aerosol type, retrieved from observations with CIMEL sun-photometers at three sub-arctic locations at the Scandinavian Peninsula are presented. The observations were made at ALOMAR-Andenes in Norway, Abisko in Sweden and Sodankylä in Finland. This field campaign took place in late spring and summer 2007 as part of the...article 2012
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Mielonen, T. (author), Levy, R.C. (author), Aaltonen, V. (author), Komppula, M. (author), de Leeuw, G. (author), Huttunen, J. (author), Lihavainen, H. (author), Kolmonen, P. (author), Lehtinen, K.E.J. (author), Arola, A. (author)Aerosol Optical Depth (AOD) and Ångström exponent (AE) values derived with the MODIS retrieval algorithm over land (Collection 5) are compared with ground based sun photometer measurements at eleven sites spanning the globe. Although, in general, total AOD compares well at these sites (R 2 values generally over 0.8), there are cases (from 2 to...article 2011
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Roelofs, G.-J. (author), ten Brink, H. (author), Kiendler-Scharr, A. (author), de Leeuw, G. (author), Mensah, A. (author), Minikin, A. (author), Otjes, R. (author), TNO Bouw en Ondergrond (author)In May 2008, the measurement campaign IMPACT for observation of atmospheric aerosol and cloud properties was conducted in Cabauw, The Netherlands. With a nudged version of the coupled aerosol-climate model ECHAM5-HAM we simulate the size distribution and chemical composition of the aerosol and the associated aerosol optical thickness (AOT) for...article 2010
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Morgan, W.T. (author), Allan, J.D. (author), Bower, K.N. (author), Esselborn, M. (author), Harris, B. (author), Henzing, J.S. (author), Highwood, E.J. (author), Kiendler-Scharr, A. (author), McMeeking, G.R. (author), Mensah, A.A. (author), Northway, M.J. (author), Osborne, S. (author), Williams, P.I. (author), Krejci, R. (author), Coe, H. (author), TNO Bouw en Ondergrond (author)A case study of atmospheric aerosol measurements exploring the impact of the vertical distribution of aerosol chemical composition upon the radiative budget in North-Western Europe is presented. Sub-micron aerosol chemical composition was measured by an Aerodyne Aerosol Mass Spectrometer (AMS) on both an airborne platform and a ground-based site...article 2010
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Timmermans, R.M.A. (author), Segers, A.J. (author), Builtjes, P.J.H. (author), Vautard, R. (author), Siddans, R. (author), Elbern, H. (author), Tjemkes, S.A.T. (author), Schaap, M. (author), TNO Bouw en Ondergrond (author)Monitoring aerosols over wide areas is important for the assessment of the population's exposure to health relevant particulate matter (PM). Satellite observations of aerosol optical depth (AOD) can contribute to the improvement of highly needed analyzed and forecasted distributions of PM when combined with a model and ground-based observations....article 2009
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TNO Defensie en Veiligheid (author), Curier, R.L. (author), Veefkind, J.P. (author), Braak, R. (author), Veihelmann, B. (author), Torres, O. (author), de Leeuw, G. (author)The Ozone Monitoring Instrument (OMI) multiwavelength algorithm has been developed to retrieve aerosol optical depth using OMI-measured reflectance at the top of the atmosphere. This algorithm was further developed by using surface reflectance data from a field campaign in Cabauw (The Netherlands), a new cloud-screening method, and a global...article 2008
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Bennouna, Y.S. (author), de Leeuw, G. (author), TNO Bouw en Ondergrond (author)In order to investigate the high temporal variability of aerosols properties over large areas, we are proposing to use geostationary observations from the Spinning Enhanced Visible Infrared Radiometer (SEVIRI) aboard the Meteosat Second Generation satellite (MSG). The algorithm described in this contribution is used to derive daytime Aerosol...conference paper 2007
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TNO Defensie en Veiligheid (author), Robles-Gonzalez, C. (author), Leeuw, G.de (author), Decae, R. (author), Kusmierczyk-Michulec, J.T. (author), Stammes, P. (author)Aerosol retrieved algorithms for ATSR-2 have been applied over land and water using data from the Indian Ocean Experiment (INDOEX) Intensive Field Phase (IFP) in February and March 1999. The goal was the extension of the ATSR-2 algorithms, developed for application over the U.S. east coast and Europe, to other areas with different types of...article 2006
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Schoemaker, R.M. (author), de Leeuw, G. (author), TNO Defensie en Veiligheid (author)Aerosol properties are retrieved from ATSR-2 data (ERS-2 satellite) by utilizing the dual view for application over land and the single view for application over water. These two algorithms have been merged into a fast and efficient algorithm that allows for near real-time processing and which is suitable for operational use. It includes...conference paper 2005
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