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2018 STCE Annual Meeting Surface UV radiation.

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Presentation on theme: "2018 STCE Annual Meeting Surface UV radiation."— Presentation transcript:

1 2018 STCE Annual Meeting Surface UV radiation

2 2018 STCE Annual Meeting Surface UV radiation Hugo De Backer (RMI)
David Bolsée (IASB) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

3 Equipment & knowhow of RMI Equipment & knowhow of IASB Successes
Surface UV radiation Content Equipment & knowhow of RMI Equipment & knowhow of IASB Successes What can be done more? Obstacles to do more Conclusions Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

4 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

5 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

6 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

7 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Total ozone columns (since 1971) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

8 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Total ozone columns (since 1971) UV spectral measurement (since 1989) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

9 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Total ozone columns (since 1971) UV spectral measurement (since 1989) -> UV index Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

10 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Total ozone columns (since 1971) UV spectral measurement (since 1989) -> UV index UV index forecast Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

11 Equipment & knowhow of RMI
Surface UV radiation Equipment & knowhow of RMI Observations at Uccle: Ozone profiles (since 1969) Total ozone columns (since 1971) UV spectral measurement (since 1989) -> UV index UV index forecast Radiation measurements in the network of Automatic Weather Stations Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

12 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

13 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

14 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) Available facilities for the full radiometric characterization required for solar measurements: dark current, linearity of the detection system, wavelength calibration of the spectrometers, angular response of the entrance optics. Available standards of spectral irradiance and facilities for the absolute calibration of the instruments (conversion of raw date into physical units: spectral irradiance in mW/m².nm) FEL 1000 W lamps Calibration bench Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

15 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) For broadband instruments (pyranometers, filter radiometers) ARF (Angular Response Function) facility developed for the measurement of the angular response. Characterization of the deviation to the cosine response, to be integrated in the data processing of solar measurements Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

16 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) For broadband instruments (pyranometers, filter radiometers) SRF (Spectral Response Function) facility developed for the measurement of the spectral response function of one channel of a broadband instrument. This laboratory characterization is required for the preparation of the absolute calibration of these instruments. Monobeam for the ‘SRF calibration’ Pyranometers under ‘SRF calibration’ Light source (solar simulator) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

17 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) For broadband instruments (pyranometers, filter radiometers) Spectral measurements (Uccle) Measurements of the global Solar Spectral measurements (SSI) using double monochromators: Heritage from the 60’s  90’s (P.C. Simon): stratospheric balloon flights, rockets, space missions (SOLSPEC). International collaborations, know-how for absolute calibration & radiometric characterization. Since 1993 (under impulse of European projects): global SSI measured at Uccle, now with a Bentham double monochromator: direct Upgrade for this year: delivery of a solar shadow band: global diffuse Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

18 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) For broadband instruments (pyranometers, filter radiometers) Spectral measurements (Uccle) Broadband UV measurement Broadband UV measurement: UVB-UVA pyranometers  Integrated irradiance (W/m²) UVB ( nm) UVA ( nm)  UV index measurement Multichannel filter radiometer: GUV511 (Biospherical Inc)  Integrated irradiance (W/m²) over 5 narrowband channels  UV index measurement Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

19 Equipment & knowhow of IASB
Surface UV radiation Equipment & knowhow of IASB Optical laboratory for calibration & characterisation of instruments For any double monochromators (including the Brewer instruments) For broadband instruments (pyranometers, filter radiometers) Spectral measurements (Uccle) Broadband UV measurement at different sites -> UV index For the calculation of UV index: 1) From spectral measurements (CIE weighted SSI) 2) From UVB pyranometers: advanced methodology based on the instrument angular response, the spectral response (conversion to CIE action spectrum) and absolute response. 3) From GUV511: algorithm (Dahlback, 1996) to be applied Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

20 Successes Surface UV radiation
Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

21 Surface UV radiation Successes Characterisation Brewer instrument of RMI (slit function, wavelength, calibration) during Camsum (1994 = Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

22 Measurement of cosine response of Brewer instrument (2011)
Surface UV radiation Successes Characterisation Brewer instrument of RMI (slit function, wavelength, calibration) during Camsum (1994 = Measurement of cosine response of Brewer instrument (2011) Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

23 Measurement of cosine response of Brewer instrument (2011)
Surface UV radiation Successes Characterisation Brewer instrument of RMI (slit function, wavelength, calibration) during Camsum (1994 = Measurement of cosine response of Brewer instrument (2011) Use of Total Ozone data of RMI for correction of UV index measurements with broadband instruments of IASB after the successful intercomparison of broadband instruments at PMOD Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

24 What can be done more Surface UV radiation
Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

25 Cross comparison of the measurements
Surface UV radiation What can be done more Cross comparison of the measurements Integrated display of measurements of both institutes Quasi real time mapping of the observations UV Forecast for regions (validated by common set of observations) Sharing locations of broadband and/or multichannel instruments with AWS of RMI for efficiency of maintenance Efforts to optimize calibration strategies using existing facilities Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

26 Obstacles to do more Surface UV radiation
Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

27 Different priorities at the institutes
Surface UV radiation Obstacles to do more Different priorities at the institutes Sharing data on different servers, use of different formats and datbases Relocation of broadband/multichannel instruments from heritage locations (technical compatibility) Available manpower to implement changes Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

28 Conclusions Surface UV radiation
Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

29 Share infrastructure Talk about problems Comunicate solutions
Surface UV radiation Conclusions To team up over the bounderies of the institutes we should Share infrastructure Talk about problems Comunicate solutions Exchange knowhow Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

30 Enjoy more STCE Share infrastructure Talk about problems
Surface UV radiation Conclusions To team up over the bounderies of the institutes we should Share infrastructure Talk about problems Comunicate solutions Exchange knowhow Enjoy more STCE Hugo De Backer, KMI, Ringlaan 3, B-1180 Brussels STCE annual meeting, 7 June 2018, Brussels

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