Skip to content

Torleif Weydahl

Senior Scientist

+47 63 89 80 72

+47 920 45 222

Urban Environment and Industry

Kjeller

tow@nilu.no

Torleif_Weydahl

Torleif Weydahl has 35 publications at NILU:

Nonexhaust emissions in road tunnels

Markelj, Miha; Weydahl, Torleif; Grythe, Henrik; Lopez-Aparicio, Susana

2024

Utslipp og spredning av støv fra LKAB i Narvik

Weydahl, Torleif; Grythe, Henrik; Vallejo, Islen; Markelj, Miha

2023

Vurdering av miljøgifter i kanaliserte utslipp til luft ved Metallco NMF

Weydahl, Torleif; Halvorsen, Helene Lunder; Heimstad, Eldbjørg Sofie

2023

Støv – hva er det og hvordan måler vi det?

Weydahl, Torleif; Hak, Claudia

2023

Revidert tiltaksutredning for lokal luftkvalitet i Drammen

Weydahl, Torleif; Markelj, Miha; Høyem, Harald

2023

Revidert tiltaksutredning for lokal luftkvalitet i Drammen kommune

Weydahl, Torleif; Markelj, Miha; Walker, Sam-Erik; Høyem, Harald

2023

Tiltaksutredning for lokal luftkvalitet i Lørenskog kommune

Høiskar, Britt Ann Kåstad; Walker, Sam-Erik; Weydahl, Torleif; Markelj, Miha; Andersen, André; Lopez-Aparicio, Susana; Grythe, Henrik

2023

Finnfjord AS. Oppdaterte spredningsberegninger av utslipp til luft.

Berglen, Tore Flatlandsmo; Markelj, Miha; Weydahl, Torleif; Svendby, Tove Marit; Grythe, Henrik; Tønnesen, Dag

2023

Revidert tiltaksutredning for lokal luftkvalitet i Bergen

Weydahl, Torleif; Høiskar, Britt Ann Kåstad

2022

Tiltaksutredning for lokal luftkvalitet i Levanger kommune

Weydahl, Torleif; Teigland, Even Kristian; Hak, Claudia; Lopez-Aparicio, Susana; Sousa Santos, Gabriela; Grythe, Henrik; Hamer, Paul David; Vo, Dam Thanh; Vallejo, Islen; Høiskar, Britt Ann Kåstad

2022

Sentinel-5P based NOx emissions from large combustion plants for comparison with and possibly QA/QC of E-PRTR emissions

Stebel, Kerstin; Schneider, Philipp; Hamer, Paul David; Tarrasón, Leonor; Weydahl, Torleif; Antognazza, Frederico

2022

Utslippsberegninger med NERVE – Norwegian Emissions from Road Vehicle Exhaust-Modellen

Grythe, Henrik; Weydahl, Torleif; Lopez-Aparicio, Susana

2022

Air Quality Plans and Measures. Analysis of data submitted from 2014 to 2020.

Sousa Santos, Gabriela; Clemetsen, Tore; Weydahl, Torleif; Guerreiro, Cristina

2021

Diffuse utslipp ved lossing ved Boliden. Metodeutvikling og resultat.

Grythe, Henrik; Uggerud, Hilde Thelle; Andresen, Erik; Bäcklund, Are; Weydahl, Torleif

2021

Beregning av luftkvalitet ved Bjørnheimveien 26

Tønnesen, Dag Arild; Weydahl, Torleif

2021

Revidert tiltaksutredning for lokal luftkvalitet i Stavanger kommune

Weydahl, Torleif; Johnsrud, Mona; Vo, Dam Thanh; Walker, Sam-Erik; Høiskar, Britt Ann Kåstad; Ranheim, Patrick

2020

Revidert tiltaksutredning for lokal luftkvalitet i Stavanger

Weydahl, Torleif; Høiskar, Britt Ann Kåstad; Johnsrud, Mona; Ranheim, Patrick

2020

Hvem er det egentlig som forurenser i byene våre?

Weydahl, Torleif; Høiskar, Britt Ann Kåstad

2020

EEA-33 Industrial Emissions Country Profiles. Methodology report. Updated July 2020.

Weydahl, Torleif; Young, Katrina; Hampshire, Kathryn; Goodwin, Justin; Granger, Marthe; Zeiger, Bastian

2020

Tiltaksutredning for lokal luftkvalitet i Tromsø

Weydahl, Torleif; Walker, Sam-Erik; Johnsrud, Mona; Vo, Dam Thanh; Ranheim, Patrick

2019

Amine based CO2 capture at Melkøya. Modelling of nitrosamines and nitramines.

Tønnesen, Dag; Svendby, Tove Marit; Weydahl, Torleif

2019

Tiltaksutredning og handlingsplan for lokal luftkvalitet i Sarpsborg og Fredrikstad

Weydahl, Torleif; Grythe, Henrik; Høiskar, Britt Ann Kåstad; Svorstøl, Eli-Trine; Haug, Tormod Wergeland

2018

Reduserte klimagassutslipp som følge av revidert Oslopakke 3

Mehammer, Bernt Sverre; Halseth, Arve; Raanaa, Anne Grete; Weydahl, Torleif; Høiskar, Britt Ann Kåstad; Andersen, André

2018

Tiltaksutredning for lokal luftkvalitet i Sarpsborg og Fredrikstad

Weydahl, Torleif; Grythe, Henrik; Høiskar, Britt Ann Kåstad; Svorstøl, Eli-Trine; Haug, Tormod Wergeland

2018

2018

Diffuse emissions of dust from LKAB Narvik

NILU has, on behalf of LKAB Norge AS, carried out emission and dispersion calculations for combined emissions from point sources and diffuse sources from the facility in Narvik. The purpose […]

Project period: 2023 – 2023

Concluded

Revision of air quality assessment for Drammen

NILU, in collaboration with Asplan Viak AS, has prepared a local air quality assessment for Drammen municipality. The project includes an assessment of air quality in Drammen through traffic calculations […]

Project period: 2022 – 2023

Concluded

Air quality assessment for Lørenskog municipality

The air quality assessment for Lørenskog municipality covers mapping of the air quality through traffic, emission and dispersion calculations of PM10, PM2,5 and NO2 for the present situation (2019) and […]

Project period: 2022 – 2022

Concluded

Revised local air quality assessment for Bergen

NILU has prepared a revised air quality assessment for Bergen. The assessment with an action plan for improved local air quality aims to ensure that pollution levels remain within the […]

Project period: 2021 – 2022

Concluded

Air quality assessment for Levanger municipality

NILU har utarbeidet en tiltaksutredning del I (kartlegging) for lokal luftkvalitet i Levanger. Utredningen er gjennomført på oppdrag for Levanger kommune etter anbefaling fra Miljødirektoratet. Tiltaksutredningen gjør rede for forurensningssituasjonen og […]

Project period: 2020 – 2022

Concluded

Model Advancements for high Spatial and TEmporal Resolution simulations of environmental toxics (SIS MASTER)

The main goal of the project is to modify and enhance NILUs existing atmospheric models to allow for improved simulation of traditional air pollutants (e.g., NO2, PM2.5, PM10) at very […]

Project period: 2018 – 2021

Concluded

Dispersion modeling of air pollution from Årdal Metallverk

NILU has studied the effect of aluminum production on the environment around Norwegian aluminum smelters by doing calculations and measurements since the early 1970s. In this project, surface concentrations have […]

Project period: 2021 – 2021

Concluded

Boliden – Diffuse emissions from unloading of zinc concentrate (Boliden)

Diffuse emissions from the unloading of zinc (Zn) concentrate in Odda, Western Norway have been quantified using an inverse modelling approach. Eleven deposition samplers were strategically placed around the plant […]

Project period: 2021 – 2021

Concluded

Air quality assessment for Tromsø

NILU and Urbanet analyse have prepared a revised air quality assessment for Tromsø. The action plan, including strategies and measures, aims to reduce air pollution to a level that meets […]

Project period: 2019 – 2019

Concluded

Torleif Weydahl has 35 publications at NILU:

Nonexhaust emissions in road tunnels

Markelj, Miha; Weydahl, Torleif; Grythe, Henrik; Lopez-Aparicio, Susana

2024

Utslipp og spredning av støv fra LKAB i Narvik

Weydahl, Torleif; Grythe, Henrik; Vallejo, Islen; Markelj, Miha

2023

Vurdering av miljøgifter i kanaliserte utslipp til luft ved Metallco NMF

Weydahl, Torleif; Halvorsen, Helene Lunder; Heimstad, Eldbjørg Sofie

2023

Støv – hva er det og hvordan måler vi det?

Weydahl, Torleif; Hak, Claudia

2023

Revidert tiltaksutredning for lokal luftkvalitet i Drammen

Weydahl, Torleif; Markelj, Miha; Høyem, Harald

2023

Revidert tiltaksutredning for lokal luftkvalitet i Drammen kommune

Weydahl, Torleif; Markelj, Miha; Walker, Sam-Erik; Høyem, Harald

2023

Tiltaksutredning for lokal luftkvalitet i Lørenskog kommune

Høiskar, Britt Ann Kåstad; Walker, Sam-Erik; Weydahl, Torleif; Markelj, Miha; Andersen, André; Lopez-Aparicio, Susana; Grythe, Henrik

2023

Finnfjord AS. Oppdaterte spredningsberegninger av utslipp til luft.

Berglen, Tore Flatlandsmo; Markelj, Miha; Weydahl, Torleif; Svendby, Tove Marit; Grythe, Henrik; Tønnesen, Dag

2023

Revidert tiltaksutredning for lokal luftkvalitet i Bergen

Weydahl, Torleif; Høiskar, Britt Ann Kåstad

2022

Tiltaksutredning for lokal luftkvalitet i Levanger kommune

Weydahl, Torleif; Teigland, Even Kristian; Hak, Claudia; Lopez-Aparicio, Susana; Sousa Santos, Gabriela; Grythe, Henrik; Hamer, Paul David; Vo, Dam Thanh; Vallejo, Islen; Høiskar, Britt Ann Kåstad

2022

Sentinel-5P based NOx emissions from large combustion plants for comparison with and possibly QA/QC of E-PRTR emissions

Stebel, Kerstin; Schneider, Philipp; Hamer, Paul David; Tarrasón, Leonor; Weydahl, Torleif; Antognazza, Frederico

2022

Utslippsberegninger med NERVE – Norwegian Emissions from Road Vehicle Exhaust-Modellen

Grythe, Henrik; Weydahl, Torleif; Lopez-Aparicio, Susana

2022

Air Quality Plans and Measures. Analysis of data submitted from 2014 to 2020.

Sousa Santos, Gabriela; Clemetsen, Tore; Weydahl, Torleif; Guerreiro, Cristina

2021

Diffuse utslipp ved lossing ved Boliden. Metodeutvikling og resultat.

Grythe, Henrik; Uggerud, Hilde Thelle; Andresen, Erik; Bäcklund, Are; Weydahl, Torleif

2021

Beregning av luftkvalitet ved Bjørnheimveien 26

Tønnesen, Dag Arild; Weydahl, Torleif

2021

Revidert tiltaksutredning for lokal luftkvalitet i Stavanger kommune

Weydahl, Torleif; Johnsrud, Mona; Vo, Dam Thanh; Walker, Sam-Erik; Høiskar, Britt Ann Kåstad; Ranheim, Patrick

2020

Revidert tiltaksutredning for lokal luftkvalitet i Stavanger

Weydahl, Torleif; Høiskar, Britt Ann Kåstad; Johnsrud, Mona; Ranheim, Patrick

2020

Hvem er det egentlig som forurenser i byene våre?

Weydahl, Torleif; Høiskar, Britt Ann Kåstad

2020

EEA-33 Industrial Emissions Country Profiles. Methodology report. Updated July 2020.

Weydahl, Torleif; Young, Katrina; Hampshire, Kathryn; Goodwin, Justin; Granger, Marthe; Zeiger, Bastian

2020

Tiltaksutredning for lokal luftkvalitet i Tromsø

Weydahl, Torleif; Walker, Sam-Erik; Johnsrud, Mona; Vo, Dam Thanh; Ranheim, Patrick

2019

Amine based CO2 capture at Melkøya. Modelling of nitrosamines and nitramines.

Tønnesen, Dag; Svendby, Tove Marit; Weydahl, Torleif

2019

Tiltaksutredning og handlingsplan for lokal luftkvalitet i Sarpsborg og Fredrikstad

Weydahl, Torleif; Grythe, Henrik; Høiskar, Britt Ann Kåstad; Svorstøl, Eli-Trine; Haug, Tormod Wergeland

2018

Reduserte klimagassutslipp som følge av revidert Oslopakke 3

Mehammer, Bernt Sverre; Halseth, Arve; Raanaa, Anne Grete; Weydahl, Torleif; Høiskar, Britt Ann Kåstad; Andersen, André

2018

Tiltaksutredning for lokal luftkvalitet i Sarpsborg og Fredrikstad

Weydahl, Torleif; Grythe, Henrik; Høiskar, Britt Ann Kåstad; Svorstøl, Eli-Trine; Haug, Tormod Wergeland

2018

2018

Diffuse emissions of dust from LKAB Narvik

NILU has, on behalf of LKAB Norge AS, carried out emission and dispersion calculations for combined emissions from point sources and diffuse sources from the facility in Narvik. The purpose […]

Project period: 2023 – 2023

Concluded

Revision of air quality assessment for Drammen

NILU, in collaboration with Asplan Viak AS, has prepared a local air quality assessment for Drammen municipality. The project includes an assessment of air quality in Drammen through traffic calculations […]

Project period: 2022 – 2023

Concluded

Air quality assessment for Lørenskog municipality

The air quality assessment for Lørenskog municipality covers mapping of the air quality through traffic, emission and dispersion calculations of PM10, PM2,5 and NO2 for the present situation (2019) and […]

Project period: 2022 – 2022

Concluded

Revised local air quality assessment for Bergen

NILU has prepared a revised air quality assessment for Bergen. The assessment with an action plan for improved local air quality aims to ensure that pollution levels remain within the […]

Project period: 2021 – 2022

Concluded

Air quality assessment for Levanger municipality

NILU har utarbeidet en tiltaksutredning del I (kartlegging) for lokal luftkvalitet i Levanger. Utredningen er gjennomført på oppdrag for Levanger kommune etter anbefaling fra Miljødirektoratet. Tiltaksutredningen gjør rede for forurensningssituasjonen og […]

Project period: 2020 – 2022

Concluded

Model Advancements for high Spatial and TEmporal Resolution simulations of environmental toxics (SIS MASTER)

The main goal of the project is to modify and enhance NILUs existing atmospheric models to allow for improved simulation of traditional air pollutants (e.g., NO2, PM2.5, PM10) at very […]

Project period: 2018 – 2021

Concluded

Dispersion modeling of air pollution from Årdal Metallverk

NILU has studied the effect of aluminum production on the environment around Norwegian aluminum smelters by doing calculations and measurements since the early 1970s. In this project, surface concentrations have […]

Project period: 2021 – 2021

Concluded

Boliden – Diffuse emissions from unloading of zinc concentrate (Boliden)

Diffuse emissions from the unloading of zinc (Zn) concentrate in Odda, Western Norway have been quantified using an inverse modelling approach. Eleven deposition samplers were strategically placed around the plant […]

Project period: 2021 – 2021

Concluded

Air quality assessment for Tromsø

NILU and Urbanet analyse have prepared a revised air quality assessment for Tromsø. The action plan, including strategies and measures, aims to reduce air pollution to a level that meets […]

Project period: 2019 – 2019

Concluded