Ola Engelsen

Low impact of dry conditions on the CO2 exchange of a Northern-Norwegian blanket bog.

Lund, M.; Bjerke, J.W.; Drake, B.G.; Engelsen, O.; Hansen, G.H.; Parmentier, F.J.W.; Powell, T.L.; Silvennoinen, H.; Sottocornola, M.; Tømmervik, H.; Weldon, S.; Rasse, D.P.

Hyper-spectral sensor measurements at an Arctic Atlantic raised bog in northern Norway.

Engelsen, O.; Tømmervik, H.; Rossini, M.; Vescovo, L.; Bjerke, J.W.; Hansen, G.

Fluctuations of MS births and UV-light exposure.

Verheul, F.; Smolders, J.; Trojano, M.; Lepore, V.; Zwanikken, C.; Amato, M.P.; Grand'maison, F.; Butzkueven, H.; Marrosu, M.; Duquette, P.; Comi, G.; Izquierdo, G.; Grammond, P.; Lus, G.; Petersen, T.; Bergamaschi, R.; Giuliani, G.; Boz, C.; Coniglio, G.; Van Pesch, V.; Lechner-Scott, J.; Cavalla, P.; Granella, F.; Avolio, C.; Fiol, M.; Poehlau, D.; Saladino, M.L.; Gallo, P.; Deri, N.; Oleschko Arruda, W.; Paine, M.; Ferro, M.; Barnett, M.; Cabrera-Gomez, J.A.; Slee, M.; Moore, F.; Shaw, C.; Petkovska-Boskova, T.; Rutherford, M.; Engelsen, O.; Damoiseaux, J.; Hupperts, R.

Low-ozone events in the southern polar summer as indicated by Met Office ozone analyses.

Jackson, D.R.; Orsolini, Y.J.; Engelsen, O.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2009.

Myhre, C.L.; Edvardsen, K.; Stebel, K.; Svendby, T.M.; Engelsen, O.; Johnsrud, M.; Dahlback, A.

An introduction to the SCOUT-AMMA stratospheric aircraft, balloons and sondes campaign in West Africa, August 2006: rationale and roadmap.

Cairo, F.; Pommereau, J. P.; Law, K. S.; Schlager, H.; Garnier, A.; Fierli, F.; Ern, M.; Streibel, M.; Arabas, S.; Borrmann, S.; Berthelier, J. J.; Blom, C.; Christensen, T.; D'Amato, F.; Di Donfrancesco, G.; Deshler, T.; Diedhiou, A.; Durry, G.; Engelsen, O.; Goutail, F.; Harris, N. R. P.; Kerstel, E. R. T.; Khaykin, S.; Konopka, P.; Kylling, A.; et al.

Antineutrophil cytoplasmic antibody-associated vasculitides: Could geographic patterns be explained by ambient ultraviolet radiation?

Gatenby, P.A.; Lucas, R.M.; Engelsen, O.; Ponsonby, A.-L.; Clements, M.

ANCA-associated vasculitides: could geographical patterns be explained by ambient UVR or vitamin D.

Gatenby, P.; Lucas, R.; Engelsen, O.; Ponsonby, A.L.; Clements, M.

D-vitamin i nord – sola, mølja og miljø.

Brustad, M.; Engelsen, O.; Sandanger, T.

Influence of clouds on the spectral actinic flux density in the lower troposphere (INSPECTRO): overview of the field campaigns.

Thiel, S.; Ammannato, L.; Bais, A.; Bandy, B.; Blumthaler, M.; Bohn, B.; Engelsen, O.; Gobbi, G.P.; Gröbner, J.; Jäkel, E.; Junkermann, W.; Kazadzis, S.; Kift, R.; Kjeldstad, B.; Kouremeti, N.; Kylling, A.; Mayer, B.; Monks, P.S.; Reeves, C.E.; Schallhart, B.; Scheirer, R.; Schmidt, S.; Schmitt, R.; Schreder, J.; Silbernagl, R.; Topaloglou, C.; Thorseth, T.M.; Webb, A.R.; Wendisch, M.; Werle, P.

Aerosol measurements and atmospheric correction at high northern latitudes: a comparison of MERIS data.

Engelsen, O.; Sorensen, K.; Hokedal, J.

Review: The relationship between UV exposure and vitamin D status.

Engelsen, O.; Webb, A.R.

The relationship between exposure of ultraviolet radiation and vitamin D status.

Engelsen, O.

The high prevalence of vitamin D insufficiency across Australian populations is only partly explained by season and latitude.

van der Mei, I.A.F.; Ponsonby, A.-L.; Engelsen, O.; Pasco, J.A.; McGrath, J.J.; Eyles, D.W.; Blizzard, L.; Dwyer, T.; Lucas, R.; Jones, G.

UV/visible radiation climate variability on a decadal scale at Svalbard. Poster presentation.

Engelsen, O.; Hansen, G.H.

Calculated ultraviolet exposure levels for a healthy vitamin D status.

Webb, A.R.; Engelsen, O.

Daily duration of vitamin D synthesis in human skin with relation to latitude, total ozone, altitude, ground cover, aerosols and cloud thickness.

Engelsen, O.; Brustad, M.; Aksnes, L.; Lund, E.

Vitamin D winter: new considerations on its duration.

Engelsen, O.; Brustad, M.; Lund, E.

Long-term UV and PAR doses in Nortern-Norway in spring on the basis of total ozone and cloud cover.

Engelsen, O.; Hansen, G. H.; Svenøe, T.

Establishment of Decadal-scale UV climatologies for high-latitude ecosystems studies.

Hansen, G.; Engelsen, O.; Edvardsen, K.; Verdebout, J.; Meerkoetter, R.; Bugliaro, L.; Borja, A.

Variability and feedbacks of UV-radiation and surface radiation budget in the Arctic.

Ørbæk, J.B.; Engelsen, O.

Vitamin D status of middle-aged women at 65-71 degrees north in relation to dietary intake and exposure to ultraviolet radiation.

Brustad, M.; Alsaker, E.; Engelsen, O.; Aksne, L.,, Lund, E.

Reconstruction of the long-term UV climate at a North-Norwegian location in spring. Poster presentation.

Engelsen, O.; Hansen, G.

The Nordkalotten Satellite Validation Network (NorSatVal). Poster presentation.

Hansen, G.; Engelsen, O.; Kyrö, E. Sukovaara, T.; Johansson, M.; Callaghan, T.; Bergholm, F.; Gausa, M.; Manninen, T.; Metsämäki, S.; Peltoniemi, J.; Pulliainen, J.; Smolander, H.; Stenberg, P.; Sørensen, K.; Tømmervik, H.

EDUCE – European database for ultraviolet radiation climatology and evaluation. Abstract.

Seckmeyer, G.; Kjeldstad, B.; Putz, E.; Taalas, P.; Gardiner, B.; Bais, A.; Slaper, H.; Kylling, A.; Webb, A.; Weihs, P.; Engelsen, O.; Blumthaler, M.; Lenoble, J.; Janouch, M.; Krzyscin, J.; Eerme, K.; Litynska, Z.; Gillotay, D.; di Sarra, A.G.; Feister, U.; Steinmetz, M.; Gröbner, J.; Siani, A.-M.; Henriques, D.; van Weele, M.; Brogniez, C.; Koskel, T.

The European Database for Ultraviolet Climatology and Evaluation (EDUCE).

Seckmeyer, G.; Edvardsen, K.; Engelsen, O.; Kylling, A. et al.

Fast simulations of downward UV doses, indices and irradiances at the Earth’s surface.

Engelsen, O.; Kylling, A.