Ansatt bilde
Kai Sørensen
BSc
Position: Research Manager
Phone: +47 907 32 129
Section: Ledelse, forskningsfaglig
Specialist in optical remote sensing and development of automatic sensor system for water quality measurements. Specialization in sensor technology and use of sensor platforms as ships of opportunity. Long experience in development of analytical laboratory methods and optical in situ techniques. Member Scientific Advisory Group (SAG) for satellite sensors. Principal investigator for international projects for ESA (VAMP) and EU-project REVAMP, FerryBox, DISMAR, NorSEN the national satellite project SATOCEAN, CoastColor, and the national activity on ships of opportunity (SOOP). Experience from optical measurements and remote sensing from lakes and has participated in the project “Light and Life in African Environment” (Lake Victoria). Work on water quality and sensor measurements on aquaculture including live fish transport harmful algal monitoring, lake monitoring using satellite technology.

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Scientific articles and Bookchapters

  1. Johnsen, Geir; Norli, Marit; Moline, Mark A.; Robbins, Ian; Quillfeldt, Cecilie von; Sørensen, Kai; Cottier, Finlo Robert; Berge, Jørgen; (2018) The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms. Polar Biology ISSN 0722-4060. Vol 41 No6 s1197-1216 doi: 10.1007/s00300-018-2278-5
  2. Amaro, T; Bertocci, I; Queiros, A M; Rastelli, E; Borgersen, G; Brkljacic, M; Nunes, J; Sorensen, K; Danovaro, R; Widdicombe, S; (2018) Effects of sub-seabed CO2 leakage: Short- and medium-term responses of benthic macrofaunal assemblages. Marine Pollution Bulletin ISSN 0025-326X. Vol 128 s519-526 doi: 10.1016/j.marpolbul.2018.01.068
  3. Nima, Ciren; Frette, Øyvind; Hamre, Børge; Erga, Svein Rune; Chen, Yi-Chun; Zhao, Lu; Sørensen, Kai; Norli, Marit; Stamnes, Knut; Muyimbwa, Dennis; Ssenyonga, Taddeo; Ssebiyonga, Nicolausi; Stamnes, Jakob J.; (2017) Analysis and parameterization of absorption properties of northern Norwegian coastal water. AIP Conference Proceedings ISSN 0094-243X. Vol 1810:120007 No1 doi: 10.1063/1.4975581
  4. Nima, Ciren; Hamre, Børge; Frette, Øyvind; Erga, Svein Rune; Chen, Yi-Chun; Zhao, Lu; Sørensen, Kai; Norli, Marit; Stamnes, Jakob J.; (2017) Impact of Chromophoric dissolved organic matter on light absorption in lake water on the Tibetan Plateau, China. AIP Conference Proceedings ISSN 0094-243X. Vol 1810:120005 doi: 10.1063/1.4975579
  5. Ruddick, Kevin; Brockmann, Carsten; Créach, Véronique; De Keukelaere, Liesbeth; Doxaran, David; Forster, Rodney; Jaccard, Pierre; Knaeps, Els; Lebreton, Carole; Ledang, Anna Birgitta; Nechad, Bouchra; Norli, Marit; Novoa, Stéfani; Ody, Anouck; Pringle, Nicholas; Sørensen, Kai; Stelzer, Kerstin; Van Der Zande, Dimitry; Vanhellemont, Quinten; (2016) Processing and exploitation of multisensor optical data for coastal water applications - The HIGHROC project. ESA SP ISSN 0379-6566. Vol SP-740
  6. Brumovsky, Miroslav; Bečanová, Jitka; Kohoutek, Jiri; Thomas, Henrike; Petersen, Wilhelm; Sørensen, Kai; Sanka, Ondrej; Nizzetto, Luca; (2016) Exploring the occurrence and distribution of contaminants of emerging concern through unmanned sampling from ships of opportunity in the North Sea. Journal of Marine Systems ISSN 0924-7963. Vol 162 s47-56 doi: 10.1016/j.jmarsys.2016.03.004
  7. Nima, Ciren; Frette, Øyvind; Hamre, Børge; Erga, Svein Rune; Chen, Yi-Chun; Zhao, Lu; Sørensen, Kai; Norli, Marit; Stamnes, Knut; Stamnes, Jakob J.; (2016) Absorption properties of high-latitude Norwegian coastal water: The impact of CDOM and particulate matter. Estuarine, Coastal and Shelf Science ISSN 0272-7714. Vol 178 s158-167 doi: 10.1016/j.ecss.2016.05.012
  8. Reggiani, Emanuele R; King, Andrew L; Norli, Marit; Jaccard, Pierre; Sørensen, Kai; Bellerby, Richard G J; (2016) FerryBox-assisted monitoring of mixed layer pH in the Norwegian Coastal Current. Journal of Marine Systems ISSN 0924-7963. Vol 162 s29-36 doi: 10.1016/j.jmarsys.2016.03.017
  9. Cirennima, X; Hamre, Børge; Frette, Øyvind; Erga, Svein Rune; Chen, Yi-Chun; Zhao, Lu; Sørensen, Kai; Norli, Marit; Lu, Da-Ren; Xing, Qian-Guo; Ma, Yao-Ming; Gelsor, Norsang; Stamnes, Jakob J.; (2015) Impact of particulate and dissolved material on light absorption properties in a High-Altitude Lake in Tibet, China. Hydrobiologia ISSN 0018-8158. Vol Published ahead of print doi: 10.1007/s10750-015-2528-2
  10. Reggiani, Emanuele Roberto; Bellerby, Richard; Sørensen, Kai; (2015) Underwater spectrophotometric detection: Scaling down ocean acidification monitoring. IEEE, . IEEE conference proceedings Kapittel Kapittel. ISBN 9781479959495.
  11. Kleiv, Øyvind; Folkestad, Are; Høkedal, Jo; Sørensen, Kai; Aas, Eyvind; (2015) Estimation of upward radiances and reflectances at the surface of the sea from above-surface measurements. Ocean Science ISSN 1812-0784. Vol 11 No5 s779-788 doi: 10.5194/os-11-779-2015
  12. Poste, Amanda; Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Sørensen, Kai; Larssen, Thorjørn; (2015) Effects of photodemethylation on the methylmercury budget of boreal Norwegian lakes. Environmental Toxicology and Chemistry ISSN 0730-7268. Vol 34 No6 s1213-1223 doi: 10.1002/etc.2923
  13. Aas, Eyvind; Høkedal, Jo; Sørensen, Kai; (2014) Secchi depth in the Oslofjord-Skagerrak area: theory, experiments and relationships to other quantities. Ocean Science ISSN 1812-0784. Vol 10 s177-199 doi: 10.5194/os-10-177-2014
  14. Dromph, Karsten Mikael; Agusti, Susana; Basset, Alberto; Franco, Javier; Henriksen, Peter; Icely, John; Lehtinen, Sirpa; Moncheva, Snejana; Revilla, Marta; Roselli, Leonde; Sørensen, Kai; (2013) Sources of uncertainty in assessment of marine phytoplankton communities. Hydrobiologia ISSN 0018-8158. Vol 704 No1 s253-264 doi: 10.1007/s10750-012-1353-0
  15. Aas, Eyvind; Højerslev, Niels Kristian; Høkedal, Jo; Sørensen, Kai; (2013) Optical water types of the Nordic Seas and adjacent areas. Oceanologia ISSN 0078-3234. Vol 55 No2 s471-482 doi: 10.5697/oc.55-2.471
  16. Yakushev, Evgeny; Sørensen, Kai; (2013) On seasonal changes of the carbonate system in the Barents Sea: observations and modeling. Marine Biology Research ISSN 1745-1000. Vol 9 No9 s822-830 doi: 10.1080/17451000.2013.775454
  17. Stamnes, Knut; Li, Wei; Fan, Y.; Hamre, Børge; Frette, Øyvind; Folkestad, Are; Sørensen, Kai; Stamnes, Jakob J.; (2013) A new algorithm for simultaneous retrieval of aerosol and marine parameters in coastal environments. AIP Conference Proceedings ISSN 0094-243X. Vol 1531 s919-922 doi: 10.1063/1.4804921
  18. Tilstone, Gavin H.; Peters, Sheef W.M.; van der Woerd, Hendrik Jan; Eleveld, Marieke A.; Ruddick, Kevin; Schönfeld, Wolfgang; Krasemann, Hajo; Martinez-Vicente, Victor; Blondeau-Patissier, David; Röttgers, Rüdiger; Sørensen, Kai; Jørgensen, Peter Viskum; Shutler, Jamie D.; (2012) Variability in specific-absorption properties and their use in a semi-analytical ocean colour algorithm for MERIS in North Sea and Western English Channel Coastal Waters. Remote Sensing of Environment ISSN 0034-4257. Vol 118 s320-338 doi: 10.1016/j.rse.2011.11.019
  19. Haande, Sigrid; Rohrlack, Thomas; Semyalo, Ronald Paul; Brettum, Pål; Edvardsen, Bente; Solheim, Anne Lyche; Sørensen, Kai; Larsson, Petter; (2011) Phytoplankton dynamics and cyanobacterial dominance in Murchison Bay of Lake Victoria (Uganda) in relation to environmental conditions. Limnologica ISSN 0075-9511. Vol 41 No1 s20-29 doi: 10.1016/j.limno.2010.04.001
  20. Volent, Zsolt; Johnsen, Geir; Hovland, Erlend Kjeldsberg; Folkestad, Are; Olsen, Lasse Mork; Tangen, Karl; Sørensen, Kai; (2011) Improved monitoring of phytoplankton bloom dynamics in a Norwegian fjord by integrating satellite data, pigment analysis, and Ferrybox data with a coastal observation network. Journal of Applied Remote Sensing ISSN 1931-3195. Vol 5 doi: 10.1117/1.3658032
NIVA began to register scientific articles in CRIStin in 2010, reports from 2014.

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