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Research | Polar research | Antarctic Research - UV-monitoring
Antarctic UV-monitoring
Since 1999, the Finnish Meteorological Institute (FMI) has participated in the Antarctic ultraviolet (UV) radiation monitoring. The Antarctic UV-monitoring network has been established by the Spanish INM (Instituto Nacional de Meteorología) in collaboration with FMI, DNA-IAA (Dirección Nacional del Antártico - Instituto Antártico Argentino), and CADIC (Centro Austral de Investigaciones Cientificas) from Argentina.
Instrumentation
The network consists of three multichannel moderate bandwidth filter NILU-UV radiometers at Belgrano II (77.52S, 34.37W), Marambio (64.14S, 56.37W), and Ushuaia (54.48S, 68.19W). The NILU-UV radiometers measure UV radiation at 5 channels with centre wavelengths at 302, 312, 320, 340, and 380 nm. The bandwidth is about 10 nm FWHM.
Quality assurance and Quality control
Biweekly lamp tests are performed to control the quality of the measurements. Solar comparisons during the sunny period of the year (October-May) using the FMI traveling reference NILU-UV #008 and the NILU-UV radiometers at Marambio and Ushuaia are made. After one-week measurements at one site, the reference travels to the next site, until 2-3 solar comparisons at both sites are made. Lamp tests are made before and after each solar comparison to study the stability of #008. At the end of the seasonal measurement period, #008 returns to FMI for maintenance. Solar comparisons with spectroradiometers are made on regular basis.
More information on the Antarctic UV monitoring is available at the web-pages of the INM MAR-project (select 'Publicaciones'on the left).
References
Lakkala K, Redondas A, Koskela T, Taalas P, Torres C, Cuevas E and Deferrari G 2002. Quality assurance of a solar UV network in the Antarctic, 27th General Assembly of the European Geophysical Society (Nice-France), 21-26 April.
Torres C, Redondas A, Cuevas E, Lakkala K, Taalas P, Yela M, Ochoa H and Deferrari G 2002. Correction and validation of total ozone data series from an Antarctic multichannel filter radiometer solar UV network, 27th General Assembly of the European Geophysical Society (Nice-France), 21-26 April.
Meinander O, Lakkala K, Redondas A, Torres C, Cuevas E, Deferrari G, Koskela T and Taalas P. 2003. TRAVELING REFERENCE NILU-UV AT THE ANTARCTIC REGION: solar UV comparisons at Ushuaia and Marambio in 2002. Poster EAE03-A-03942 at the EGS-AGU-EUG Joint Assembly, Nice, France , April 2003.
Further information:
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Solar comparison of NILU-UV instruments at the FMI Jokioinen Observatory. Every year the Antarctic NILU-UV returns to Finland for maintanance and calibrations
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