Blar i Vitenskapelige publikasjoner på forfatter "Walker, Sam-Erik"
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The AirGAM 2022r1 air quality trend and prediction model
Walker, Sam-Erik; Solberg, Sverre; Schneider, Philipp; Guerreiro, Cristina (Peer reviewed; Journal article, 2023)This paper presents the AirGAM 2022r1 model – an air quality trend and prediction model developed at the Norwegian Institute for Air Research (NILU) in cooperation with the European Environment Agency (EEA) over 2017–2021. ... -
Evaluation and inter-comparison of open road line source models currently in use in the Nordic countries
Berger, Janne; Walker, Sam-Erik; Denby, Bruce; Berkowicz, Ruwim; Løfstrøm, Per; Ketzel, Matthias; Härkönen, Jari; Nikmo, Juha; Karppinen, Ari (Journal article; Peer reviewed, 2010) -
Modelling atmospheric oxidation of 2-aminoethanol (MEA) emitted from post-combustion capture using WRF-Chem
Karl, Matthias; Svendby, Tove Marit; Walker, Sam-Erik; Velken, Anna von Streng; Castell, Nuria (Journal article; Peer reviewed, 2015) -
Quantifying the Impact of the Covid-19 Lockdown Measures on Nitrogen Dioxide Levels throughout Europe
Solberg, Sverre; Walker, Sam-Erik; Schneider, Philipp; Guerreiro, Cristina (Peer reviewed; Journal article, 2021)In this paper, the effect of the lockdown measures on nitrogen dioxide (NO2) in Europe is analysed by a statistical model approach based on a generalised additive model (GAM). The GAM is designed to find relationships ... -
The Eulerian urban dispersion model EPISODE – Part 2: Extensions to the source dispersion and photochemistry for EPISODE–CityChem v1.2 and its application to the city of Hamburg
Karl, Matthias; Walker, Sam-Erik; Solberg, Sverre; Ramacher, Martin O. P. (Journal article; Peer reviewed, 2019)This paper describes the CityChem extension of the Eulerian urban dispersion model EPISODE. The development of the CityChem extension was driven by the need to apply the model in largely populated urban areas with highly ... -
Uncertainties in assessing the environmental impact of amine emissions from a CO2 capture plant
Karl, Matthias; Castell, Nuria; Simpson, David; Solberg, Sverre; Starrfelt, Jostein; Svendby, Tove Marit; Walker, Sam-Erik; Wright, Richard Frederic (Journal article; Peer reviewed, 2014)In this study, a new model framework that couples the atmospheric chemistry transport model system WRF-EMEP and the multimedia fugacity level III model was used to assess the environmental impact of amine emissions to air ... -
The urban dispersion model EPISODE v10.0 – Part 1: An Eulerian and sub-grid-scale air quality model and its application in Nordic winter conditions
Hamer, Paul David; Walker, Sam-Erik; Sousa Santos, Gabriela; Vogt, Matthias; Vo, Dam Thanh; Lopez-Aparicio, Susana; Schneider, Philipp; Ramacher, Martin O. P.; Karl, Matthias (Peer reviewed; Journal article, 2020)This paper describes the Eulerian urban dispersion model EPISODE. EPISODE was developed to address a need for an urban air quality model in support of policy, planning, and air quality management in the Nordic, specifically ...