Employee

Employee

Dr. Pernilla Bohlin Nizzetto is Research Director and Head of NILU's Department of Environmental Chemistry and Health Effects.

She holds a MSc in Chemistry and a PhD in Occupational and Environmental Medicine from the University of Gothenburg in Sweden in collaboration with Lancaster University in the UK. She also has a 2-year post-doc from RECETOX at Masaryk University in the Czech Republic.

Since 2022, Nizzetto coordinates the Horizon Europe project INQUIRE (Identification of chemical and biological determinants, their sources, and strategies to promote healthier homes in Europe), which is part of the EU's IDEAL Cluster. In INQUIRE, the goal is to improve air quality and reduce the occurrence and exposure to harmful substances in indoor environments.

During her 15 years as a researcher in environmental chemistry, Nizzetto has focused on environmental chemistry issues indoors and outdoors with a desire to protect people, the environment and ecosystems.

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Employee

Employee

Dr Helene Lunder Halvorsen is a scientist at the Department of Environmental Chemistry and Health Effects and responsible for the Norwegian monitoring programme "Atmospheric contaminants" on behalf of the Norwegian Environment Agency. She is also involved in the reporting of organic contaminants under the European Monitoring and Evaluation Programme EMEP.

She has a master's degree in Organic Chemistry (MSc) and completed her PhD at the Department of Chemistry at the University of Oslo in 2023. In her PhD, she focused on regulated persistent organic pollutants (POPs) and used air samples from Norway and Europe to investigate the occurrence, distribution and sources of POPs.

During her 13 years at NILU, she has gained much experience with air sampling and analysis of organic contaminants, with a particular focus on method development and quality assurance of data.

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Employee

Employee

Monika Strasser Englund is the administration coordinator in the Department of Environmental Chemistry and Health Effects at NILU.

As administrative coordinator, Englund is responsible for all the administrative work and plays a key role in tying together the various disciplines and departments into one business. She is an active partner and facilitator, and is systematic, service-minded, responsible and proactive.

She is also an employee representative on NILU's board.

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Employee

Nina Dahl is a laboratory coordinator and purchasing manager at the Department of Environmental Chemistry and Health Effects, at the Inorganic Section. She has worked at Nilu since 1991 in the same department.

Nina Dahl is responsible for:

• Registration of incoming samples.
• Purchasing and accounting.
• Completion of passive samplers.
• Safety delegate tasks.

Dahl has been involved in many of the tasks at Inorganic, and now works mostly administratively.

She finds motivation in the great collegial environment and her inspiring tasks.

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Employee

Erik Andresen is head of the section at NILU dealing with inorganic analyses. He is educated in chemical engineering at Sofienberg Technical College. Erik started in NILU's inorganic laboratory in 1989 as a chemical technician.

Erik has knowledge and experience with all the analysis methods. In 2007, he was hired as operations manager for his department. He was then employed as an engineer. The job involved customer contact, ordering analyses and reporting the analysis results to the customers.

Erik has been involved in starting up laboratories in five different countries. The job involves quality control of the analysis results before they are sent out to customers. Erik has a lot of experience in the following fields: analyses of cations and anions using ion chromatography, pH measurements in precipitation, analyses of precipitation dust, gravimetrically determination of PM2.5 and PM10 on filters, as well as determination of NO2, SO2 and NH3 using passive samplers.

Employee

Dr. Karl Espen Yttri is a senior scientist at NILU with a Ph.D. in aerosol science. He has extensive expertise in atmospheric aerosols and their chemical composition across diverse environments, ranging from urban areas to the pristine Arctic and Antarctic.

His primary focus is on carbonaceous aerosols, using both on-line and off-line methodologies for the source apportionment of anthropogenic and natural aerosol sources. This includes developing analytical methods for carbonaceous aerosol, including source-specific organic tracers.

As a member of the Chemical Coordinating Centre of the European Monitoring and Evaluation Programme (EMEP) at NILU, he contributes to research on the long-range atmospheric transport of aerosol particles.

Employee

Torleif Weydahl is a senior scientist in the Department of Urban Environment and Industry and has worked at NILU since 2017. He holds a degree in mechanical engineering specializing in energy and process technology and has a doctorate from the University of Trondheim (NTNU) in modeling of turbulent mixing and reactions. 

At NILU, Torleif primarily works on air quality (AQ) assessments related to requirements within Norwegian regulation and in emission permits for Norwegian municipalities and industrial companies. He conducts emission and dispersion calculations for several source sectors, including analyses and the preparation of reports and documentation. He has developed AQ assessment and action plans for several Norwegian municipalities and has led the development of NERVE, an emission model for road traffic. 

Torleif contributes to the European Environment Agency's (EEA) topic centers, focusing on reporting emissions from the industrial sector in EU and EEA member countries. He is also an experienced project manager. 

Before starting at NILU, Torleif gained experience in carbon capture and storage research from SINTEF in Trondheim and in consultancy related to fire and safety at Lloyd's Register. 

Employee

Sam-Erik Walker holds an M.Sc. in Statistics and a B.Sc. in Computer Science from the University of Oslo.

He has over 30 years of experience developing and applying air pollution dispersion models for cities and urban areas and analysing air quality data using various numerical and statistical tools and methods. These include deterministic and probabilistic methods for model evaluation and validation, data assimilation, ensemble modelling, and data fusion to combine air quality observations with model results. He is one of the principal authors of several of the present models at NILU, including the urban air pollution dispersion model EPISODE.

He is also the leading developer behind the AirGAM trend and prediction model at NILU. This model enables the estimation of meteorology-adjusted long-term trends of air pollutants such as NO2, O3, PM, and VOCs at air quality stations in Norway and Europe. It has been used to quantify the effects of lockdowns during the recent COVID-19 pandemic and for estimating long-term trends for all EEA stations in Europe.

Recently, he developed the AirRisk model, a risk assessment model to quantify the risk or probability of exceeding limit values of NO2 and PM in connection with recent assessment studies in various Norwegian cities and urban areas, including Lørenskog, Drammen, and Oslo.

He actively disseminates scientific knowledge by writing reports and papers and regularly participates in scientific conferences. His primary motivation for working at NILU is to contribute to a cleaner world.

Employee

Employee

Dam Thanh Vo has worked as a scientist at NILU since 2007. He is focusing on Emission Inventory on regional and local scale; Spatial Data Analysis using ArcGIS Desktop, ArcGIS Pro, ModelBuilder; Visualization of air quality dispersion modelling results – ESRI WebAppBuilder.

He has a Master in Environmental Geology and Geosciences from the University of Oslo, Norway, and is educated as an Geology and Environmental Engineer at the University of Technology, Ho Chi Minh City, Vietnam.

Before 2007, Dam Thanh Vo held a position as Head of EQMA Division, Environmental Quality Monitoring and Assessment Division, Ho Chi Minh City Environmental Protection Agency (HEPA), the division manages the whole environmental quality monitoring system of Ho Chi Minh City include instrument maintenance and data management.