Measured and modelled UV-radiation in Norway
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1 Measured and modelled UV-radiation in Norway Jan Asle Olseth, Iselin Medhaug, Joachim Reuder, Brynhild Berge Sjølingstad, Ottar Sætre, Deyang, Bjørn Johnsen Geophysical Institute University of Bergen COST Seminar, - May 9, Warsaw
2 Measured and modelled UV-radiation in Norway (and Tibet) - Master-theses I. Medhaug: Reconstruction of UV-radiation and its potential implications on development of skin cancer () O. Sætre: Observed and modelled UV-radiation in Bergen () B.B. Sjølingstad: Reconstruction of UV radiation: UV exposure of the Arcto-Norwegian cod egg population () Deyang: Measured and modelled solar radiation in Tibet (9) - New measurements: Measurements of solar and terrestrial radiation at an oil platform (EKOFISK)
3 I. Medhaug: UV-radiation and its effect on skin cancer in Norway Reconstruction of UV-radiation One station in each county 9. o N 9 sites Estimation of UV radiation STAR - model (two versions): STARsci for clear sky STARneuro under actual cloud cover Trained on data from Garmisch-Partenkirchen 8. o N
4 I. Medhaug: UV-radiation and its effect on skin cancer in Norway Reconstructed vs Measured erythemal UV Comparison modelled vs measured UV Tromsø Bergen Oslo Kjevik Clear sky: - Slight overestimation (- %) at all stations Overcast: - Overestimation of - % for all but Tromsø Overall: - % deviation for Tromsø -- % overestimation for the other Solar elevation > Distribution of Reconstructed Measured erythemal UV
5 I. Medhaug: UV-radiation and its effect on skin cancer in Norway Incidence rate of malignant melanoma vs Erythemal UV Southern Northern
6 Decadal trends (%) Bergen More clouds Less UVA Less ozone More UVB ERY Sihccajavri Much more clouds Less ozone Less UVA UVB ERY Lyngdal Less clouds More UVA Less ozone More UVB ERY
7 O. Sætre: Observed and modelled UV-radiation in Bergen STAR model ( Trained on data from Garmisch-Partenkirchen) Model results vs ground measurement for different cloud amounts N Measured b) N= målt/estimert til lineær regresjon Mod / Obs. Målt av GUV. N= Estimat frå STARneuro. målt/estimert til lineær regresjon Mod / Obs. d) N= Estimat frå STARneuro. Estimat frå STARneuro. c) N= Målt av GUV. målt/estimert til lineær regresjon N= målt/estimert til lineær regresjon Mod / Obs. Målt av GUV. N= målt/estimert til lineær regresjon Mod / Obs. Målt av GUV. N= N= målt/estimert til lineær regresjon Mod / Obs. Målt av GUV. målt/estimert til lineær regresjon Målt av GUV. j) N= N= målt/estimert til lineær regresjon N=8 Mod / Obs.9 Estimat frå STARneuro. N= Estimat frå STARneuro. Målt av GUV. i) N= h) Mod / Obs.9 g) N= Estimat frå STARneuro. Estimat frå STARneuro. Estimat frå STARneuro. N= N= Estimat frå STARneuro. Modelled f) e) N= Mod / Obs. Målt av GUV. N=8 målt/estimert til lineær regresjon Mod / Obs. Målt av GUV.
8 B. B. Sjølingstad: UV-radiation and its effect on Arcto Norwegian cod Model UV at spawning areas (March May) Spectrally weighted UV-radiation at sea surface + UV-transmission in ocean + Vertical distribution of cod-eggs (wind speed) Local Cod UV-index (Quantify potential UV effect on cod eggs passively drifting) + Southern Northern Relative weight of the spawning areas Shift towards north with time (caused by increasing sea temperature) Total Cod UV-index (for the total Norwegian cod stock)
9 B. B. Sjølingstad: UV-radiation and its effect on Arcto Norwegian cod Overall For the entire cod-egg population Weighted according to the relative weight of the spawning areas Annual Cod UV-index. ºN.9 ºN Northern area Southern area
10 Deyang: Measured and modelled solar radiation in Tibet (9) Measured vs modelled hourly UV-index in Lhasa, Tibet Clear sky Overall STAR (G,NN) STAR NN)
11 Deyang: Measured and modelled solar radiation in Tibet (9) Input to STAR Global radiation (G) & Cloud amount (NN) Measured vs modelled daily UV-index in Lhasa, Tibet Input to STAR Cloud amount (NN) (whole dataset)
12 Radiation measurements over ocean (pilotproject) GI-UiB / NRPA / Met Inst / ConocoPhilips EKOFISK Global Longwave UV UVI measured at Ekofisk UVI Short wave radiation at Ekofisk W/m Long wave radiation at Ekofisk W/m
13 Radiation measurements over ocean (pilotproject) Problems with shading / calibration Clear sky measurements - effects of shadowing objects Measured modelled Measured and modelled clear sky UVI Day and 8 in 8 UVI Year
14 Radiation measurements over ocean (pilotproject) Ratios UVI measured to UVI modelled, vs azimuthal direction E 9 9. N8 W. S 8 Day and 8 in 8 All UVI ratios
15 Outcome from University of Bergen Geophysical Institute Measurements: - Data from Bergen used for the test of models - Measurements of solar and terrestrial radiation at an oil platform (EKOFISK) Publications: - Papers - Lindfors, Anders; Kaurola, Jussi; Arola, Antti; Koskela, Tapani; Lakkala, Kaisa; Josefsson, Weine; Olseth, Jan Asle; Johnsen, Bjørn : A method for reconstruction of past UV radiation based on radiative transfer modeling: Applied to four stations in northern Europe, JOURNAL OF GEOPHYSICAL RESEARCH,, - Medhaug, I., J.A. Olseth and J. Reuder, 9, UV radiation and skin cancer in Norway. Submitted to JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY, 9
16 Outcome from University of Bergen Geophysical Institute - Presentations at Conferences/Meetings: - Sætre, O. and Olseth, J.A.,, Measured and modelled UV-radiation in Bergen. Nordic Ozone Group (NOG) meeting, Copenhagen April. - Olseth, Jan Asle; Medhaug, Iselin; Reuder, Joachim; Sjølingstad, Brynhild Berge; Sæter, Ottar,, UV-radiation in Norway: Measurements, reconstructions, and applications., Proceedings of the UV Conference "One century of UV radiation research", 8- Sept., Davos, Switzerland, Medhaug, Iselin; Olseth, Jan Asle; Reuder, Joachim. 8, Reconstruction of UV-radiation in Norway. EGU General Assembly 8; Medhaug, Iselin; Olseth, Jan Asle; Reuder, Joachim, 8, UV-radiation and skin cancer in Norway. The th Nordic Meteorologists' Meeting, Reykjavik, Iceland, Olseth, Jan Asle; Medhaug, Iselin; Reuder, Joachim; Sjølingstad, Brynhild Berge; Sætre, Ottar, 8, Measured and modelled UV radiation in Norway. The th Nordic Meteorologists' Meeting, Reykjavik, Iceland,
17 Outcome from University of Bergen Geophysical Institute - Master-theses O. Sætre: Observed and modelled UV-radiation in Bergen () I. Medhaug: Reconstruction of UV-radiation and its potential implications on development of skin cancer () B.B. Sjølingstad: Reconstruction of UV radiation: UV exposure of the Arcto-Norwegian cod egg population () Deyang: Measured and modelled solar radiation in Tibet (9)
18 Thank you Greetings from Geophysical Institute, University of Bergen
19 Cloud effect in Lhasa, Tibet
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