document

Sensitivity of air pollution simulations with LOTOS-EUROS to the temporal distribution of anthropogenic emissions

Mues, A. (author), Kuenen, J. (author), Hendriks, C. (author), Manders, A. (author), Segers, A. (author), Scholz, Y. (author), Hueglin, C. (author), Builtjes, P. (author), Schaap, M. (author)

In this study the sensitivity of the model performance of the chemistry transport model (CTM) LOTOS-EUROS to the description of the temporal variability of emissions was investigated. Currently the temporal release of anthropogenic emissions is described by European average diurnal, weekly and seasonal time profiles per sector. These default...

article 2014

document

Regional air quality modeling: North American and European perspectives

Steyn, D. (author), Builtjes, P. (author), Schaap, M. (author), Yarwood, G. (author)

An overview of regional-scale quality modeling practices and perspectives in North America and Europe, highlighting the differences and commonalities in how regional-scale air quality modeling systems are being used and evaluated across both continents

article 2013

document

Bias Correction Techniques to Improve Air Quality Ensemble Predictions: Focus on O3 and PM Over Portugal

Monteiro, A. (author), Ribeiro, I. (author), Tchepel, O. (author), Sá, E. (author), Ferreira, J. (author), Carvalho, A. (author), Martins, V. (author), Strunk, A. (author), Galmarini, S. (author), Elbern, H. (author), Schaap, M. (author), Builtjes, P. (author), Miranda, A.I. (author), Borrego, C. (author)

Five air quality models were applied over Portugal for July 2006 and used as ensemble members. Each model was used, with its original set up in terms of meteorology, parameterizations, boundary conditions and chemical mechanisms, but with the same emission data. The validation of the individual models and the ensemble of ozone (O3) and...

article 2013

document

Einrichtung einer umweltzone und ihre wirksamkeit auf die PM10-feinstaubkonzentration - Eine pilotanalyse am beispiel München (Introduction of a low-emission zone and the effect on air pollutant concentration of particulate matter (PM10) - A pilot study in Munich)

Morfeld, P. (author), Stern, R. (author), Builtjes, P. (author), Groneberg, D.A. (author), Spallek, M. (author)

Since the introduction of low emission zones in Germany in 2008 the question of their efficiency has been debated. In this pilot study, measurement data collected before and after the introduction of the low emission zone in Munich (October 2007 until January 2008 vs. October 2008 until Januar 2009) were analysed on the basis of matched...

article 2013

document

Differences in particulate matter concentrations between urban and rural regions under current and changing climate conditions

Mues, A. (author), Manders, A. (author), Schaap, M. (author), van Ulft, L.H. (author), van Meijgaard, E. (author), Builtjes, P. (author)

Pollution levels in urban areas and their surrounding rural regions differ due to different sources and density of emissions, different composition of pollutants as well as specific meteorological effects. These concentration differences for PM10 are investigated and compared in this study for three different north-west European urban...

article 2013

document

Regional air quality modeling: North American and European perspectives

Steyn, D. (author), Builtjes, P. (author), Schaap, M. (author), Yarwood, G. (author)

article 2012

document

Implementation and evaluation of pH-dependent cloud chemistry and wetdeposition in the chemical transport model REM-Calgrid

Banzhaf, S. (author), Schaap, M. (author), Kerschbaumer, A. (author), Reimer, E. (author), Stern, R. (author), van der Swaluw, E. (author), Builtjes, P. (author)

The Chemistry Transport Model REM-Calgrid (RCG) has been improved by implementing an enhanced description of aqueous-phase chemistry and wet deposition processes including droplet pH. A sensitivity study on cloud and rain droplet pH has been performed to investigate its impact on model sulphate production and gas wet scavenging. Air...

article 2012

document

The ACCENT-protocol: A framework for benchmarking and model evaluation

Grewe, V. (author), Moussiopoulos, N. (author), Builtjes, P. (author), Borrego, C. (author), Isaksen, I.S.A. (author), Volz-Thomas, A. (author)

We summarise results from a workshop on"Model Benchmarking and Quality Assurance" of the EU-Network of Excellence ACCENT,including results from other activities (e.g. COST Action 732) and publications.A formalised evaluation protocol is presented, i.e. a generic formalism describing the procedure of howto perform a model evaluation. This...

article 2012

document

Investigating differences in air quality between urban and rurual regions under current and future climate conditions

Mues, A. (author), Manders-Groot, A.M.M. (author), van Ulft, B. (author), van Meijgaard, E. (author), Schaap, M. (author), Builtjes, P. (author)

The differences between air quality in urban and rural regions has been investigated for the current situation using both observations and modeling and also for future climate conditions.

conference paper 2012

document

Recommendations for the spatial assessment of air quality resulting from the FP6 EU project Air4EU

Denby, B. (author), Larssen, S. (author), Builtjes, P. (author), Keuken, M. (author), Sokhi, R. (author), Moussiopoulos, N. (author), Douros, J. (author), Borrego, C. (author), Costa, A.M. (author), Pregger, T. (author)

Air4EU is an FP6 European project with the major aim of providing recommendations on methodologies for the spatial assessment of air quality on local, urban and regional scales. The emphasis is on methodologies that combine monitoring and modelling and on spatial assessment for regulatory purposes, i.e., the EU daughter directives. The...

article 2011

document

SMOKE for Europe – adaptation, modification and evaluation of a comprehensive emission model for Europe

Bieser, J. (author), Aulinger, A. (author), Matthias, V. (author), Quante, M. (author), Builtjes, P. (author)

The US EPA regional emission model SMOKE was adopted and modified to create temporally and spatially distributed emission for Europe and surrounding countries based on official reports and public domain data only. The aim is to develop a flexible model capable of creating consistent high resolution emission data for long-term runs of Chemical...

article 2011

document

Lotos-Euros air quality forecasts by assimilation of OMI tropospheric NO2 columns

Timmermans, R.M.A. (author), Eskes, H. (author), Segers, A. (author), Curier, L. (author), Builtjes, P. (author), Swart, D. (author), Schaap, M. (author)

conference paper 2010

document

Lotos-Euros air quality forecasts by assimilation of OMI tropospheric NO2 columns

Timmermans, R.M.A. (author), Eskes, H. (author), Segers, A. (author), Curier, L. (author), Builtjes, P. (author), Swart, D. (author), Schaap, M. (author)

public lecture 2010

document

Abatement strategies to reduce air pollution from transport in Germany

Kugler, U. (author), Theloke, J. (author), Thiruchittampalam, B. (author), Geftler, T. (author), Uzbasich, M. (author), Köble, R. (author), Friedrich, R. (author), Builtjes, P. (author), van der Gon, H.D. (author), Stern, R. (author), Jörb, W. (author), Dämmgen, U. (author), Appelhans, J. (author), TNO Bouw en Ondergrond (author)

Large scale exceedances of PM₁₀ and N0₂ ambient air limit values will continue in Germany despite the implementation of national and international policies. An integrated approach has therefore been developed to assess different cost-effective mitigation strategies for all source groups on a national level. On-road and ofT...

conference paper 2010

document

An observing system simulation experiment (OSSE) for aerosol optical depth from satellites

Timmermans, R.M. (author), Schaap, M. (author), Builtjes, P. (author), Elbern, H. (author), Siddans, R. (author), Tjemkes, S. (author), Vautard, R. (author), TNO Bouw en Ondergrond (author)

Monitoring aerosols over wide areas is a scientific challenge with important applications for human health and the understanding of climate. Aerosol optical depth (AOD) measurements from satellites can improve the highly needed analyzed and forecasted distributions of ground-level aerosols in combination with models and ground-based measurements...

article 2009

document

Een samenhangend probleem voor Rotterdamse haven

Timmermans, R.M.A. (author), Builtjes, P. (author), TNO Bouw en Ondergrond (author)

article 2008

document

Comparison of two data assimilation methods for assessing PM10 exceedances on the European scale

Denby, B. (author), Schaap, M. (author), Segers, A. (author), Builtjes, P. (author), Horálek, J. (author), TNO Bouw en Ondergrond (author)

Two different data assimilation techniques have been applied to assess exceedances of the daily and annual mean limit values for PM10 on the regional scale in Europe. The two methods include a statistical interpolation method (SI), based on residual kriging after linear regression of the model, and Ensemble Kalman filtering (EnKF). Both methods...

article 2008

document

A model inter-comparison study focussing on episodes with elevated PM10 concentrations

Stern, R. (author), Builtjes, P. (author), Schaap, M. (author), Timmermans, R. (author), Vautard, R. (author), Hodzic, A. (author), Memmesheimer, M. (author), Feldmann, H. (author), Renner, E. (author), Wolke, R. (author), Kerschbaumer, A. (author), TNO Bouw en Ondergrond (author)

Five three-dimensional chemical transport models of different complexity were applied to Central Europe to assess the ability of models to reproduce PM10 concentrations under highly polluted conditions. The participating models were the French CHIMERE model, the Dutch LOTOS-EUROS model, as well as the REM-CALGRID, the EURAD and the LM-MUSCAT...

article 2008

document

Development of an integrated approach for the assessment of abatement strategies of Particulate Matter concentrations in Germany = Entwicklung Eines Integrierten Ansatzes für die Bewertung von Strategien zur Verminderung der Feinstaubbelastung in Deutschland

Theloke, J. (author), Builtjes, P. (author), Stern, R. (author), Appelhans, J. (author), Dämmgen, U. (author), Friedrich, R. (author), Geftler, T. (author), Haenel, D. (author), Handke, V. (author), Jörß, W. (author), van der Gon, H.D. (author), Kummer, U. (author), Köble, R. (author), Thiruchittampalam, B. (author), TNO Bouw en Ondergrond (author)

According to projected and modelled ambient air concentrations, large scale exceedances of PM10 limit values in Germany will continue despite implementation of current national and international legislation. Identification of the causes of these (current and projected) exceedances is crucial to develop successful mitigation options. Furthermore,...

article 2008

document

An OSSE for aerosols

Timmermans, R. (author), Schaap, M. (author), Tjemkes, S. (author), Builtjes, P. (author), TNO Bouw en Ondergrond (author)

An observing system simulation experiment using a chemical transport model in support of the instrument specification definition for an UVS candidate instrument on board METEOSAT Third Generation geostationary satellites. © 2007 Optical Society of America.

conference paper 2007