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Fu, G. (author), Xiang Lin, H. (author), Heemink, A. (author), Lu, S. (author), Segers, A. (author), van Velzen, N. (author), Lu, T. (author), Xu, S. (author)
In this study, we investigate a strategy to accelerate the data assimilation (DA) algorithm. Based on evaluations of the computational time, the analysis step of the assimilation turns out to be the most expensive part. After a study of the characteristics of the ensemble ash state, we propose a mask-state algorithm which records the sparsity...
article 2017
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Manders, A.M.M. (author), Builtjes, P.J.H. (author), Curier, L. (author), Denier van der Gon, H.A.C. (author), Hendriks, C. (author), Jonkers, S. (author), Kranenburg, R. (author), Kuenen, J.J.P. (author), Segers, A.J. (author), Timmermans, R.M.A. (author), Visschedijk, A.J.H. (author), Wichink Kruit, R.J. (author), van Pul, W.A.J. (author), Sauter, F.J. (author), van der Swaluw, E. (author), Swart, D.P.J. (author), Douros, J. (author), Eskes, H. (author), van Meijgaard, E. (author), van Ulft, B. (author), van Velthoven, P. (author), Banzhaf, S. (author), Mues, A.C. (author), Stern, R. (author), Fu, G. (author), Lu, S. (author), Heemink, A. (author), van Velzen, N. (author), Schaap, M. (author)
The development and application of chemistry transpor tmodels has a long tradition. Within the Netherlands the LOTOS–EUROS model has been developed by a consortium of institutes, after combining its independently developed predecessors in 2005. Recently, version 2.0 of the model was released as an open-source version. This paper presents the...
article 2017
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Lu, S. (author), Heemink, A. (author), Lin, H.X. (author), Segers, A. (author), Fu, G. (author)
Remote sensing, as a powerful tool for monitoring atmospheric phenomena, has been playing an increasingly important role in inverse modeling. Remote sensing instruments measure quantities that often combine several state variables as one. This creates very strong correlations between the state variables that share the same observation variable....
article 2017
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Abida, R. (author), Attié, J.L. (author), El Amraoui, L. (author), Ricaud, P. (author), Lahoz, W. (author), Eskes, H. (author), Segers, A. (author), Curier, L. (author), De Haan, J. (author), Kujanpaä, J. (author), Oude Nijhuis, A. (author), Tamminen, J. (author), Timmermans, R. (author), Veefkind, P. (author)
We use the technique of Observing System Simulation Experiments (OSSEs) to quantify the impact of spaceborne carbon monoxide (CO) total column observations from the Sentinel-5 Precursor (S-5P) platform on tropospheric analyses and forecasts. We focus on Europe for the period of northern summer 2003, when there was a severe heat wave episode...
article 2017
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Fu, G. (author), Prata, F. (author), Xiang Lin, H. (author), Heemink, A. (author), Segers, A. (author), Lu, S. (author)
Using data assimilation (DA) to improve model forecast accuracy is a powerful approach that requires available observations. Infrared satellite measurements of volcanic ash mass loadings are often used as input observations for the assimilation scheme. However, because these primary satellite-retrieved data are often two-dimensional (2-D) and...
article 2017
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Sofiev, M. (author), Ritenberga, O. (author), Albertini, R. (author), Arteta, J. (author), Belmonte, J. (author), Bernstein, C.G. (author), Bonini, M. (author), Celenk, S. (author), Damialis, A. (author), Douros, J. (author), Elbern, H. (author), Friese, E. (author), Galan, C. (author), Oliver, G. (author), Hrga, I. (author), Kouznetsov, R. (author), Krajsek, K. (author), Magyar, D. (author), Parmentier, J. (author), Plu, M. (author), Prank, M. (author), Robertson, L. (author), Marie Steensen, B. (author), Thibaudon, M. (author), Segers, A. (author), Stepanovich, B. (author), Valdebenito, A.M. (author), Vira, J. (author), Vokou, D. (author)
The paper presents the first modelling experiment of the European-scale olive pollen dispersion, analyses the quality of the predictions, and outlines the research needs. A 6-model strong ensemble of Copernicus Atmospheric Monitoring Service (CAMS) was run throughout the olive season of 2014, computing the olive pollen distribution. The...
article 2017
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Timmermans, R. (author), Kranenburg, R. (author), Manders, A. (author), Hendriks, C. (author), Segers, A. (author), Dammers, E. (author), Denier van der Gon, H. (author), Schaap, M. (author), Dammers, E. (author), Zhang, Q. (author), Wang, L. (author), Liu, Z. (author)
China's population is exposed to high levels of particulate matter (PM) due to its strong economic growth and associated urbanization and industrialization. To support policy makers to develop cost effective mitigation strategies it is of crucial importance to understand the emission sources as well as formation routes responsible for high...
article 2017
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Koffi, E.N. (author), Bergamaschi, P. (author), Karstens, U. (author), Krol, M. (author), Segers, A. (author), Schmidt, M. (author), Levin, I. (author), Vermeulen, A.T. (author), Fisher, R.E. (author), Kazan, V. (author), Klein Baltink, H. (author), Lowry, D. (author), Manca, G. (author), Meijer, H.A.J. (author), Moncrieff, J. (author), Pal, S. (author), Ramonet, M. (author), Scheeren, H.A. (author), Williams, A.G. (author)
We evaluate the capability of the global atmospheric transport model TM5 to simulate the boundary layer dynamics and associated variability of trace gases close to the surface, using radon (222Rn). Focusing on the European scale, we compare the boundary layer height (BLH) in the TM5 model with observations from the National Oceanic and...
article 2016
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Fu, G. (author), Heemink, A. (author), Lu, S. (author), Segers, A. (author), Weber, K. (author), Lin, H.X. (author)
The forecast accuracy of distal volcanic ash clouds is important for providing valid aviation advice during volcanic ash eruption. However, because the distal part of volcanic ash plume is far from the volcano, the influence of eruption information on this part becomes rather indirect and uncertain, resulting in inaccurate volcanic ash forecasts...
article 2016
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Marecal, V. (author), Peuch, V.H. (author), Andersson, C. (author), Arteta, J. (author), Beckmann, M. (author), Benedictow, A. (author), Bergstrom, R. (author), Bessagnet, B. (author), Cansado, A. (author), Cheroux, F. (author), Colette, A. (author), Coman, A. (author), Curier, R.L. (author), Denier van der Gon, H.A.C. (author), Drouin, A. (author), Elbern, H. (author), Emili, E. (author), Engelen, R.J. (author), Eskes, H.J. (author), Foret, G. (author), Friese, E. (author), Gauss, M. (author), Giannaros, C. (author), Guth, J. (author), Joly, M. (author), Jaumouille, E. (author), Josse, B. (author), Kadygrov, N. (author), Kaiser, J.W. (author), Kjajsek, K. (author), Kuenen, J.J.P. (author), Kumar, U. (author), Liora, N. (author), Lopez, E. (author), Malherbe, L. (author), Martinez, L. (author), Melas, D. (author), Meleux, F. (author), Menut, L. (author), Moinat, P. (author), Morales, T. (author), Parmentier, J. (author), Piacentini, A. (author), Plu, M. (author), Poupkou, A. (author), Queguiner, S. (author), Robertson, L. (author), Rouil, L. (author), Schaap, M. (author), Segers, A.J. (author), Sofiev, M. (author), Tarasson, L. (author), Thomas, M. (author), Timmermans, R.M.A. (author), Valdebenito, A. (author), van Velthoven, P. (author), van Versendaal, R. (author), Vira, J. (author), Ung, A. (author)
This paper describes the pre-operational analysis and forecasting system developed during MACC (Monitoring Atmospheric Composition and Climate) and continued in the MACC-II (Monitoring Atmospheric Composition and Climate: Interim Implementation) European projects to provide air quality services for the European continent. This system is based on...
article 2015
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Sofiev, M. (author), Berger, U. (author), Prank, M. (author), Vira, J. (author), Arteta, J. (author), Belmonte, J. (author), Bergmann, K.C. (author), Chéroux, F. (author), Elbern, H. (author), Friese, E. (author), Galan, C. (author), Gehrig, R. (author), Khvorostyanov, D. (author), Kranenburg, R. (author), Kumar, U. (author), Marécal, V. (author), Meleux, F. (author), Menut, L. (author), Pessi, A.M. (author), Robertson, L. (author), Ritenberga, O. (author), Rodinkova, V. (author), Saarto, A. (author), Segers, A. (author), Severova, E. (author), Sauliene, I. (author), Siljamo, P. (author), Steensen, B.M. (author), Teinemaa, E. (author), Thibaudon, M. (author), Peuch, V.H. (author)
This paper presents the first ensemble modelling experiment in relation to birch pollen in Europe. The seven-model European ensemble of MACC-ENS, tested in trial simulations over the flowering season of 2010, was run through the flowering season of 2013. The simulations have been compared with observations in 11 countries, all members of the...
article 2015
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Banzhaf, S. (author), Schaap, M. (author), Kranenburg, R. (author), Manders, A.M.M. (author), Segers, A.J. (author), Visschedijk, A.J.H. (author), van der Gon, H.A.C.D. (author), Kuenen, J.J.P. (author), van Meijgaard, E. (author), van Ulft, L.H. (author), Cofala, J. (author), Builtjes, P.J.H. (author)
In this study we present a dynamic model evaluation of chemistry transport model LOTOS-EUROS (LOng Term Ozone Simulation - EURopean Operational Smog) to analyse the ability of the model to reproduce observed non-linear responses to emission changes and interannual variability of secondary inorganic aerosol (SIA) and its precursors over Europe...
article 2015
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Fu, G. (author), Lin, H.X. (author), Heemink, A.W. (author), Segers, A.J. (author), Lu, S. (author), Palsson, T. (author)
The 2010 Eyjafjallajökull volcano eruption had serious consequences to civil aviation. This has initiated a lot of research on volcanic ash transport forecast in recent years. For forecasting the volcanic ash transport after eruption onset, a volcanic ash transport and diffusion model (VATDM) needs to be run with Eruption Source Parameters (ESP)...
article 2015
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Popa, M.E. (author), Segers, A.J. (author), Denier van der Gon, H.A.C. (author), Krol, M.C. (author), Visschedijk, A.J.H. (author), Schaap, M. (author), Röckmann, T. (author)
Hydrogen (H2) is being explored as a fuel for passenger vehicles; it can be used in fuel cells to power electric motors or burned in internal combustion engines. In order to evaluate the potential influence of a future H2-based road transportation on the regional air quality in Europe, we implemented H2 in the atmospheric transport and chemistry...
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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