INTERCOMPARISON OF 

UVB BROADBAND DEVICES 

(within Action 713)

General Information - Campaign - Participants at LAP - Others


 

GENERAL INFORMATION:

An intercomparison of broadband devices for monitoring the erythemally-effective irradiance was made within COST 713
from Sept.13 to Sept.23 initiated and organised by A.Bais at the Laboratory of Atmospheric Physics of the University of
Thessaloniki.

35 broadband instruments were involved in this intercomparison as well as 2 Brewers, a Bentham DTM300 and a ... for determining spectral and angular responses of the broadband instruments inside the laboratory.

The broadband devices were of the types SolarLight Model 501, YES, SciTech, Vital, EKO and MO MSU.

The devices were sent from Austria, Canada, Czech Republic, Finland, Germany, Greece, Italy, Netherlands, Poland,
Portugal, Russia, Spain, Sweden and Switzerland to participate in this campaign.

CAMPAIGN:

The intercomparison contains two main topics:

1. Laboratory characterization of the instruments (angular and spectral response) and

2. Outdoor intercomparison

The braodband instruments were mounted on the roof of LAP and measuring over a period of 7 days.

For the outdoor intercomparison spectral measurements were also done using the Bentham DTM300. The DTM300 was
equiped with the input optic J1002 (Schreder Company) for global spectral measurements. A special input optics developed
at the IMP Innsbruckand was mounted parallel for spectral measurements of the direct component and sky scans. The global
spectral measurements were done every 20 minutes and were weighted to the spectral responses of the broadbandmeters.

Two Spectrophotometers of type Brewer took also part, measuring global radiation during the campaign.


 
 

Participants at the LAP:

8 Participants from 6 european institutions came to Thessaloniki for technical and computational support.


 
Alkis Bais, Stelios Kazadzis, Chrysanthi Topaloglou LAP, Aristotle University of Thessaloniki, Greece Solar Light 501, ...................
Mario Blumthaler, Josef Schreder, Michael Schwarzmann Institute of Medical Physics, University of Innsbruck, Austria 2 Solar Light 501, SciTec, Eppley
Alois W. Schmalwieser Institute of Medical Physics and Biostatistics, University of Veterinary Medicine, Vienna, Austria  2 Solar Light 501
Michal Janouch Solar and Ozone Observatory Hradec Kralove, CHMI, Czech Rep. 2 Solar Light 501
Alexander Curylo Centre of Aeorology, Institute of Meteorology and Water Management, Legionowo, Poland 2 Solar Light 501
Diamantino Henriques Instituto de Meteorologia, Lisbon, Portugal 1 Solar Light 501
Nataly Chubarova Meteorological Observatory, Moscow State University, Russia MO MSU, Y.E.S.UVB-1

Other Participants:

Additionally, 12 institutions from Europe and Canada sent their broadband devices to participate in this intercompasison.
 
Bruce McArthur, AES, Canada SL501, Y.E.S.UVB-1, SciTec CUV3
Tapani Koskela, Finnish Meteorological Institute, Helsinki, Finnland Solar Light 501
Kristi Leszczynski, STUK, Finnland Solar Light 501
Klaus Dehne, DWD, Germany Solar Light 501, SciTec UV-S-AE-T
Martin Müller, Fraunhofer Institut für Atmosphärische Umweltforschung, Germany Solar Light 501
Daniele Grifoni, C.N.R.-I.A.T.A., Firenze, Italy Vital BW-100, EKO MS210D
Henk Reinen, RIVM, The Netherlands Solar Light 501
E. Cuevas, INM, Madrid, Spain 2 x Y.E.S.UVB-1
Josefsson, SMHI, Sweden Solar Light 501
Ulf Weser, Sweden Solar Light 501
Alain Heimo, Swiss Meteorologcal Institute, Payerne, Switzerland Solar Light 501
Greece Y.E.S.UVB-1

PRELIMINARY RESULTS:

SolarLigth 501: by seting the scalling factor of the data logger to 10.0 for measuring with a temporal resolution of 1 minute, the output accuracy/sensitivity can be increased by a digit.

!!!more will be coming up!!!


 


ACKNOWLEDGEMENT:

The stay of the participants was founded by STSMs within COST 713.

This campaign was also sponsored by WMO.

And special thanks to Alkis Bais, Stelios Kazadzis and Chrysanthi Topaloglou for the perfect organisation and the pleasing stay of the participants.

Comments to this page to: A.W.Schmalwieser, Sept.1999