• Air quality in Ny-Ålesund. Monitoring of local air quality 2014-2015. 

      Johnsrud, Mona; Hermansen, Ove; Tørnkvist, Kjersti Karlsen (NILU report;35/2016, Research report, 2016)
      The concentrations of the measured components are generally low and below national limit values for the protection of human health and critical levels for the protection of vegetation. Wind from northern sectors gave the ...
    • Air quality in Ny-Ålesund. Monitoring of local air quality 2016-2017. 

      Johnsrud, Mona; Hermansen, Ove; Tørnkvist, Kjersti Karlsen (NILU report;30/2018, Research report, 2018)
      The concentrations of the measured components are generally low and below national limit values for the protection of human health and critical levels for the protection of vegetation. Wind from northern sectors gave the ...
    • Air Quality in Ny-Ålesund. Monitoring of Local Air Quality 2018. 

      Johnsrud, Mona; Hermansen, Ove; Krejci, Radovan; Tørnkvist, Kjersti Karlsen (NILU report;21/2019, Research report, 2019)
      The concentrations of the measured components are generally low and below national limit values for the protection of human health and critical levels for the protection of vegetation. Wind from northern sectors gave the ...
    • Description of a measurement campaign for the development and validation of a non-exhaust PM traffic emisson model. 

      Denby, Bruce; Yttri, Karl Espen; Larssen, Steinar; Fiebig, Markus; Hak, Claudia; Berger, Janne; Tørnkvist, Kjersti Karlsen (NILU OR;71/2010, Research report, 2010)
      This document describes a measurement campaign intended to provide data for the further development and assessment of non-exhaust emissions and the models used to describe them.
    • Effects of rocket launches in Ny-Ålesund, 2018 - 2019. Observations of snow and air samples. 

      Aas, Wenche; Gallet, Jean-Charles; Halse, Anne Karine; Hermansen, Ove; Mikkelsen, Øyvind; Pedersen, Christina Alsvik; Spolaor, Andrea; Tørnkvist, Kjersti Karlsen; Uggerud, Hilde Thelle (NILU report;7/2021, Research report, 2021)
      The report summarizes the results from additional snow sampling and regular monitoring activities in connection to the rocket launch in Ny-Ålesund 7 Dec 2018, 26 Nov 2019 and 10 Dec 2019 to document possible impacts on ...
    • Implementation of extraction routine for ECMWF data through the Calval web-pages. Final development report. 

      Vik, Aasmund Fahre; Krognes, Terje; Walker, Sam-Erik; Bårde, Trygve; Paltiel, Roland; Tørnkvist, Kjersti Karlsen; Gloslie, Bjørn; Larsen, Rita; Thanh, The Nguyen (NILU OR; 56/2002, Research report, 2002)
      The extraction tool consists of mainly two parts. The first is a UNIX shell-script, hdf-mars, that extracts ECMWF analysed data, performs calculations and prints out an hdf-file according to the ESA CalVal metadata guidelines. ...
    • Kartlegging av lokal luftkvalitet i Hønefoss. Målinger 2018-2019. 

      Tønnesen, Dag Arild; Tørnkvist, Kjersti Karlsen; Skaar, Jøran Solnes (NILU rapport;24/2019, Research report, 2019)
      NILU - Norsk institutt for luftforskning har på oppdrag fra Ringerike kommune gjennomført kartlegging av lokal luftkvalitet i Hønefoss. Måleprogrammet startet juni 2018 og ble avsluttet i mai 2019. Målingene ble gjennomført ...
    • Luftkvalitet i norske byer. Håndbok for luftkvalitet.info - administrasjon. 

      Johnsrud, Mona; Tørnkvist, Kjersti Karlsen; Marsteen, Leif (NILU TR;01/2013, Research report, 2013)
      Denne manualen gir en innføring i webløsningen utviklet av NILU for Vegdirektoratet og Klif på admin.luftkvalitet.info. Modulene i luftkvalitet.info - administrasjon inneholder verktøy for kvalitetssikring og behandling ...
    • Operation of an Envisat Validation Data Centre. Estec Contract No 14419/00/NL/SF. Final report. 

      Krognes, Terje; Vik, Aasmund Fahre; Tørnkvist, Kjersti Karlsen; Walker, Sam-Erik; Paltiel, Roland; Bårde, Trygve; Gloslie, Bjørn; Larsen, Rita; Braathen, Geir Ole; Thanh, The Nguyen (NILU OR; 54/2002, Research report, 2002)
      NILU has designed and implemented a system for organizing and presentation of ground based measurement data, and for retrieval of the same data by scientists that perform comparisons with measurements from the ENVISATsatellite. ...
    • The development of the SYMOCS instruments and the spectral analysis. 

      Tørnkvist, Kjersti Karlsen (NILU TR;01/2000, Research report, 2000)
      Since 1995, Norwegian Institute for Air Research (NILU) has measured the stratospheric compounds O3, NO2, BrO and OClO with a ground-based spectrometer that measures the scattered light from the zenith sky. The instrument ...
    • The validation of vertical columns of ozone and NO2 from the SYMOCS instrument. 

      Tørnkvist, Kjersti Karlsen (NILU TR;02/2000, Research report, 2000)
      UV-visible Differential Optical Absorption Spectroscopy (DOAS) has proved to be a useful method for measuring slant and vertical column amounts of several atmospheric trace gases. Two ground-based UV-visible spectrometers ...