Eyvind Aas

Associate Professor Emeritus
Image of Eyvind Aas
Norwegian version of this page
Phone +47-22855808
Room 58.12.36
Username
Visiting address MetOs Dept. of Geosciences Forskningsparken Gaustadalléen 21 0349 OSLO
Postal address 0315 OSLO Department of Geosciences Postboks 1022 Blindern

Academic Interests

  • Marine optics/remote sensing related to monitoring of water quality
  • Oceanographic processes of fjords and estuaries

Higher education and employment history

  • 1980-2011: Associate Professor (phys. oceanogr.), Dept. Geophys./Geosciences, University of Oslo
  • 1979: Fellowship / Nordic Collegium for Physical Oceanography
  • 1978-79: Deputy Associate Professor, Dept. Geophys., Univ. Oslo
  • 1971-77: Research Assistant, Department of Geophysics, Univ. Oslo
  • 1969-71: Research Assistant, Int. Biological Program, Univ. Oslo

Education

  • 1985 Dr.philos. in phys. oceanogr./marine optics, Univ. Oslo
  • 1969 Cand.real. in geophysics/phys. oceanogr., Univ. Oslo
Tags: Oceanography, Marine optics, Estuaries

Publications

  • 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.  11(5), s 779- 788 . doi: 10.5194/os-11-779-2015 Full text in Research Archive. Show summary
  • Kristiansen, Trond & Aas, Eyvind (2015). Water type quantification in the Skagerrak, the Kattegat and off the Jutland west coast. Oceanologia.  ISSN 0078-3234.  57(2), s 177- 195 . doi: 10.1016/j.oceano.2014.11.002 Full text in Research Archive.
  • 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.  10, s 177- 199 . doi: 10.5194/os-10-177-2014 Full text in Research Archive. Show summary
  • Aas, Eyvind; Højerslev, Niels Kristian; Høkedal, Jo & Sørensen, Kai (2013). Optical water types of the Nordic Seas and adjacent areas. Oceanologia.  ISSN 0078-3234.  55(2), s 471- 482 . doi: 10.5697/oc.55-2.471 Full text in Research Archive. Show summary
  • Staalstrøm, André; Aas, Eyvind & Liljebladh, B. (2012). Propagation and dissipation of internal tides in the Oslofjord. Ocean Science.  ISSN 1812-0784.  8(4), s 525- 543 . doi: 10.5194/os-8-525-2012
  • Aas, Eyvind (2010). Estimates of radiance reflected towards the zenith at the surface of the sea. Ocean Science.  ISSN 1812-0784.  6(4), s 861- 876 . doi: 10.5194/os-6-861-2010
  • Wåhlin, Anna Kristine; Johansson, A. M.; Aas, Eyvind; Brostrøm, G.; Weber, Jan Erik H. & Grue, John (2010). Horizontal convection in water heated by infrared radiation and cooled by evaporation: scaling analysis and experimental results. Tellus. Series A, Dynamic meteorology and oceanography.  ISSN 0280-6495.  62A(2), s 154- 169 . doi: 10.1111/j.1600-0870.2009.00427.x
  • Aas, Eyvind; Højerslev, Niels Kristian & Høkedal, Jo (2009). Conversion of sub-surface reflectances to above-surface MERIS reflectance. International Journal of Remote Sensing.  ISSN 0143-1161.  30(21), s 5767- 5791 . doi: 10.1080/01431160902744803
  • Sørensen, Kai; Aas, Eyvind & Høkedal, Jo (2007). Validation of MERIS water products and bio-optical relationships in the Skagerrak. International Journal of Remote Sensing.  ISSN 0143-1161.  28(3-4), s 555- 568 . doi: 10.1080/01431160600815566 Show summary
  • Aas, Eyvind; Høkedal, Jo & Sørensen, Kai (2005). Spectral backscattering coefficient in coastal waters. International Journal of Remote Sensing.  ISSN 0143-1161.  26(2), s 331- 343
  • Høkedal, Jo; Aas, Eyvind & Sørensen, Kai (2005). Spectral optical and bio-optical relationships in the Oslo Fjord compared with similar results from the Baltic Sea. International Journal of Remote Sensing.  ISSN 0143-1161.  26(2), s 371- 386
  • Aas, Eyvind; Høkedal, Jo; Højerslev, Niels K.; Sandvik, R. & Sakshaug, Egil (2002). Spectral properties and UV-attenuation in Arctic marine waters, In Dag Olav Hessen (ed.),  UV-radiation and Arctic ecosystems.  Springer-Verlag, Heidelberg.  s 23 - 56
  • Adams, James T.; Aas, Eyvind; Højerslev, Niels K. & Lundgren, Bo (2002). Comparison of radiance and polarization values observed in the Mediterranean Sea and simulated in a Monte Carlo model. Applied Optics.  ISSN 0003-6935.  41(15), s 2724- 2733 Show summary
  • Aas, Eyvind & Højerslev, Niels K. (2001). Attenuation of ultraviolet irradiance in North European coastal waters. Oceanologia.  ISSN 0078-3234.  43(2), s 1- 30 Show summary
  • Højerslev, Niels K. & Aas, Eyvind (2001). Spectral light absorption by yellow substance in the Kattegat-Skagerrak area. Oceanologia.  ISSN 0078-3234.  43(1), s 39- 60 Show summary
  • Aas, Eyvind & Endresen, Øyvind (1999). Accuracy of simplified transport estimations in narrow sea straits. Deutsche Hydrographische Zeitschrift.  ISSN 0946-2015.  51(4), s 441- 451 Show summary
  • Aas, Eyvind & Højerslev, Niels K. (1999). Analysis of underwater radiance observations: apparent optical properties and analytic functions describing the angular radiance distribution. Journal of Geophysical Research.  ISSN 0148-0227.  104, s 8015- 8024 Show summary
  • Aas, Eyvind & Høkedal, Jo (1999). Reflection of spectral sky radiance on the surface of the sea and related properties. Remote Sensing of Environment.  ISSN 0034-4257.  70, s 181- 190 Show summary
  • Ødegaard, Svein; Sjøtun, Kjersti; Lein, Tor Eiliv & Aas, Eyvind (1998). Sporophyte formation of Laminaria hyperborea (Laminariales, Phaeophyceae) related to photon doses of blue light in the sea. Sarsia.  ISSN 0036-4827.  83, s 301- 308 Show summary
  • Aas, Eyvind & Korsbø, B. (1997). Self-shading effect by radiance meters on upward radiance observed in coastal waters. Limnology and Oceanography.  ISSN 0024-3590.  42, s 968- 974
  • Aas, Eyvind (1996). Refractive index of phytoplankton derived from its metabolite composition. Journal of Plankton Research.  ISSN 0142-7873.  18, s 2223- 2249
  • Aas, Eyvind & Høkedal, Jo (1996). Penetration of ultraviolet B, blue and quanta irradiance into Svalbard waters. Polar Research.  ISSN 0800-0395.  15, s 127- 138
  • Aas, Eyvind & Sørensen, K. (1995). Field observations of the relation between satellite and sea radiances in coastal waters. Applied Optics.  ISSN 1559-128X.  34, s 5422- 5432
  • Højerslev, N. K. & Aas, Eyvind (1991). A relationship for the penetration of ultraviolet B radiation into the Norwegian Sea. Journal of Geophysical Research.  ISSN 0148-0227.  96, s 17003- 17005
  • Sørgård, E; Martinsen, T & Aas, Eyvind (1990). Drag coefficient at a stationary salt wedge. Journal of Geophysical Research.  ISSN 0148-0227.  95, s 7337- 7345
  • Aas, Eyvind & Bogen, J (1988). Colors of glacier waters. Water Resources Research.  ISSN 0043-1397.  24, s 561- 565
  • Aas, Eyvind (1987). Two-stream irradiance model for deep waters. Applied Optics.  ISSN 1559-128X.  26, s 2095- 2101
  • Aas, Eyvind (1980). Relations between total quanta blue irradiance and secchi disc observations in the Norwegian and Barents Seas, In Ingen Ingen (ed.),  Studies in physical oceanography. Papers dedicated to Professor Nils G. Jerlov in commemoration of his seventieth birthday..  Københavns universitet.  Artikkel.  s 11 - 27 Full text in Research Archive.
  • Aas, Eyvind (1976). The influence of fresh water on light conditions in fjords, In Stig Skreslet; Reidar Leinebø; John B. L. Matthews & Egil Sakshaug (ed.),  Fresh water on the sea. Proceedings from a symposium on the influence of fresh-water outflow on biological processes in fjords and coastal waters, 22-25 April 1974, Geilo, Norway.  The Association of Norwegian Oceanographers.  artikkel.  s 129 - 138
  • Aas, Eyvind (1971). The natural history of the Hardangerfjord. 9. Irradiance in Hardangerfjorden 1967. Sarsia.  ISSN 0036-4827.  46, s 59- 78 Full text in Research Archive.

View all works in Cristin

  • Peters, Steef; Eleveld, Marieke; Pasterkamp, Reinold; van der Woerd, Hans; Devolder, Mia; Jans, Siegrid; Park, Youngje; Ruddick, Kevin; Block, Thomas; Brockmann, Carsten; Doerffer, Roland; Kraseman, Hansjörg; Röttgers, Rudiger; Schönfeld, Wolfgang; Jørgensen, Peter Viskum; Tilstone, Gavin; Martinez-Vincente, Victor; Moore, Gerald; Sørensen, Kai; Høkedal, Jo; Johnsen, Torbjørn Martin; Lømsland, Evy Rigmor & Aas, Eyvind (2005). Atlas of Chlorophyll-a concentration for the North Sea based on MERIS imagery of 2003. Vrije Universiteit.  ISBN 90-5192-026-1.  121 s.

View all works in Cristin

  • Aas, Eyvind (2009). Corrections of reflectance recordings by ship-mounted radiometers.
  • Wåhlin, Anna Kristine; Ericsson, A.M.; Aas, Eyvind; Brostrøm, G.; Weber, Jan Erik H. & Grue, John (2008). Horizontal convection in water heated by infrared radiation and cooled by evaporation.
  • Aas, Eyvind (2006). Vertical transfer of infrared radiation in water. Show summary
  • Aas, Eyvind (2005). Some atmospheric scattering functions and optical thicknesses from the Oslo area.
  • Aas, Eyvind; Sørensen, Kai & Høkedal, Jo (2005). Regional variations of IOPs and their relationships to other bio-optical quantities in the North Sea - Skagerrak - Kattegat area.
  • Høkedal, Jo; Aas, Eyvind & Sørensen, Kai (2005). Contribution to absorption from pigments, bleached particles and Gelbstoff compared to the total coefficient obtained with other methods.
  • Sørensen, Kai; Høkedal, Jo & Aas, Eyvind (2005). Use of ships of opportunity data for satellite data validation.
  • Wåhlin, Anna Kristine; Ericsson, A. M.; Aas, Eyvind & Weber, Jan Erik (2005). Horizontal convection in water heated by infra-red radiation and cooled by evaporation.
  • Aas, Eyvind; Christensen, Kai Håkon; Ferbar, Michaela; Fossum, Ingerid; Hanken, Helene; Høkedal, Jo; Korsbø, Brith; Kristiansen, Trond; Moreno Sanz, Paula; Staalstrøm, André; Thill, Karina; Wettre, Cecilie Drabløs & Åman, Anders (2005). Secchi disk observations in the Nordic Seas 1991-2004. Full text in Research Archive. Show summary
  • Aas, Eyvind (2004). Hvordan er det mulig å måle vannparametere fra rommet?.
  • Sørensen, Kai; Aas, Eyvind; Severinsen, Gunnar; Doerffer, Roland & Dahl, Einar (2003). Validation of MERIS water products in the Skagerrak.
  • Sørensen, Kai; Høkedal, Jo; Aas, Eyvind; Doerffer, Roland & Dahl, Einar (2003). Early results for validation of MERIS products in the Skagerrak.
  • Magnusson, J; Dahl, E; Karud, J.; Sørensen, K.; Willbergh, M. & Aas, Eyvind (2003). Validation of methods for monitoring of coastal and open sea areas with satellites and sensors on ships of opportunity. NIVA-rapport. SNO 4710.
  • Aas, Eyvind; Høkedal, Jo & Sørensen, Kai (2001). Measurements on filtered water samples: The influence of filter type, pore size and residue particles. Show summary
  • Høkedal, Jo; Aas, Eyvind & Sørensen, Kai (2001). Relations between optical quantities and chlorophyll in the Oslofjord. Show summary
  • Aas, Eyvind (2000). Spectral slope of yellow substance: Problems caused by small particles. Show summary
  • Aas, Eyvind & Højerslev, Niels K. (2000). Problems related to modelling of UV penetration into Norwegian and Danish coastal waters. Show summary
  • Stamnes, Jakob J.; Erga, Svein Rune; Frette, Øyvind; Stamnes, Knut; Chen, Binquan; Pettersson, Lasse; Svenøe, Trond; Sakshaug, Egil & Aas, Eyvind (1999). Light and life in coastal waters.
  • Aas, Eyvind (1999). Fra vannhenter til klynge. Fysisk oseanografi i Oslo 1866-1999, I: Ingen Ingen (red.),  Fra jordas indre til atmosfærens ytre : utviklingen i geofysikken i de senere år : Oslo geofysikeres forening 50 år : 1949 - 1999 : festskrift.  Oslo geofysikeres forening.  ISBN 8299530709.  Kapittel.  s 45 - 53
  • Aas, Eyvind & Højerslev, Niels K. (1999). Penetration of UVB irradiance into the Nordic Seas and adjacent coastal waters. Show summary
  • Højerslev, Niels K. & Aas, Eyvind (1999). Optical properties of yellow substance in the Kattegat-Skagerrak area.
  • Stamnes, Jakob J.; Erga, Svein Rune; Frette, Øyvind; Stamnes, Knut; Chen, Bingquan; Pettersson, Lasse; Svenøe, Trond; Sakshaug, Egil & Aas, Eyvind (1998). Light and Life in Coastal Waters. Show summary
  • Endresen, Øyvind & Aas, Eyvind (1998). Overflatestrømmer i Drøbaksundet. Seilas.  ISSN 0803-0553.  5, s 67
  • Højerslev, Niels K. & Aas, Eyvind (1998). Spectral light absorption by Gelbstoff in coastal waters displaying highly different concentrations. Show summary
  • Høkedal, Jo & Aas, Eyvind (1998). Høkedal, J. and Aas, E., 1998. Observations of spectral sky radiance and solar irradiance. Rep. Dept. Geophys., Univ. Oslo, 103, 73 pp..
  • Høkedal, Jo & Aas, Eyvind (1998). Observations of spectral sky radiance and solar irradiance. Full text in Research Archive. Show summary
  • Aas, Eyvind; Højerslev, Niels Kristian & Lundgren, Bo (1997). Aas, E., Højerslev, N. K. and Lundgren, B., 1997. Spectral irradiance, radiance and polarization data from the Nordic Cruise in the Mediterranean Sea during June-July 1971. Rep. Dept. Geophys., Univ. Oslo, 102, 97 pp..
  • Korsbø, Brith & Aas, Eyvind (1997). Korsbø, B. and Aas, E., 1997. Ship-shading effects on upward radiance and irradiance in coastal waters. Rep. Dept. Geophys., Univ. Oslo, 101, 13 pp..
  • Aas, Eyvind & Høkedal, Jo (1996). Properties of marine optical components in the ultraviolet part of the spectrum. Institute report series (Universitetet i Oslo. Institutt for geofysikk. 99. Full text in Research Archive.
  • Aas, Eyvind (1994). Estimates of contributions to the satellite radiance above the Oslofjord. Institute report series (Universitetet i Oslo. Institutt for geofysikk. 91. Full text in Research Archive.
  • Aas, Eyvind; Høkedal, Jo; Nyborg, Marit & Sørensen, Kai (1994). Observations of colour index, secchi disk depth and total suspended matter in the Skagerak.. Institute report series (Universitetet i Oslo. Institutt for geofysikk. 90. Full text in Research Archive.
  • Høkedal, Jo & Aas, Eyvind (1994). Calibration of two single-channel instruments for UV-B and blue irradiance. Department of Geophysics, University of Oslo, Reports. 88. Full text in Research Archive.
  • Aas, Eyvind (1993). Calibration of a marine radiance and colour index meter. Department of Geophysics, University of Oslo, Reports. 87. Full text in Research Archive.
  • Sørensen, K.; Aas, Eyvind; Faafeng, Bjørn & Lindell, T. (1993). Fjernmåling av vannkvalitet - Videreutvikling av optisk satellittfjernmåling som metode for overvåking av vannkvalitet. NIVA-rapport. O-90236.
  • Mikaelsen, Britt Kristin & Aas, Eyvind (1990). Mikaelsen, B.K. and Aas, E., 1990. Secchi disk depths and related quantities in the Oslofjord 1986-87. Rep. Dept. Geophys., Univ. Oslo, 77, 55 pp..
  • Sørensen, K.; Aas, Eyvind & Lindell, T. (1990). Eutrofisituasjonen i Ytre Oslofjord 1989. Delprosjekt 4.6a: Optiske målinger.. SFT rapport. 405/90.
  • Aas, Eyvind; Andresen, T.; Løyning, T. & Sørgård, E (1989). Eutrofisituasjonen i Ytre Oslofjord. Delprosjekt 3.7: Optiske observasjoner - Overflatevannets kvalitet sett ut fra observasjo¬ner i overflatelaget. SFT rapport. 388/90.
  • Sørgård, Eirik; Martinsen, Thomas & Aas, Eyvind (1988). Calibration of an ultrasonic current meter. Institute report series (Universitetet i Oslo. Institutt for geofysikk. 72. Full text in Research Archive.
  • Aas, Eyvind (1987). Aas, E., 1988. The absorption coefficient of clear ocean water. Rep. Dept. Geophys., Univ. Oslo, 67, 17 pp..
  • Hansen, S.E & Aas, Eyvind (1986). Varsling av virvler fra Kyststrømmen. Været.  ISSN 0332-5040.  1, s 20- 26
  • Aas, Eyvind (1984). Influence of shape and structure on light scattering by marine particles. Department of Geophysics, University of Oslo, Reports. 53. Full text in Research Archive.
  • Aas, Eyvind (1984). The wavelength selectivity of light scattering in the Barents Sea. Department of Geophysics, University of Oslo, Reports. 54. Full text in Research Archive.
  • Aas, Eyvind (1981). The refractive index of phytoplankton. Department of Geophysics, University of Oslo, Reports. 46. Full text in Research Archive.
  • Aas, Eyvind (1979). Light scatterance and fluorescence observations in the Barents Sea. Department of Geophysics, University of Oslo, Reports. 39.
  • Aas, Eyvind (1979). The calibration of a scatterance and fluorescence meter. Department of Geophysics, University of Oslo, Reports. 40. Full text in Research Archive.
  • Aas, Eyvind (1977). The mean seasonal variation in the transport of Atlantic water through the Faroe-Shetland Channel. Department of Geophysics, University of Oslo, Reports. 28.
  • Nilsen, Jan Harald & Aas, Eyvind (1977). Relation between solar elevation and the vertical attenuation coefficient of irradiance in Oslofjorden. Department of Geophysics, University of Oslo, Reports. 31. Full text in Research Archive.
  • Aas, Eyvind (1976). The vertical attenuation coefficient of submarine irradiance. Department of Geophysics, University of Oslo, Reports. 19. Full text in Research Archive.
  • Aas, Eyvind & Berge, Grim (1976). Irradiance observations in the Norwegian and Barents Seas. Department of Geophysics, University of Oslo, Reports. 23. Full text in Research Archive.
  • Aas, Eyvind (1969). On submarine irradiance measurements. Department of Physical Oceanography, University of Copenhagen, Reports. 6. Full text in Research Archive.

View all works in Cristin

Published Dec. 10, 2013 7:55 PM - Last modified Mar. 24, 2017 3:52 PM

Research groups