Physikalisch-Metorologisches Observatorium Davos -- World Radiation Center pmod-wrc


The CLARA Space Experiment Onboard NorSat-1

The "Compact Lightweight Absolute Radiometer" (CLARA) is a payload onboard the Norwegian NorSat-1 nano-satellite. CLARA is a new generation of radiometer to measure the Total Solar Irradiance (TSI) which is the mean energy input from the Sun to the Earth. Measurements of TSI from space have been conducted since 1979 by various institutes, and has an average value of 1361 W.m-2. The main science goal of CLARA is to measure TSI with an uncertainty better than 0.4 W.m-2. The CLARA space experiment sets new standards for TSI radiometers in terms of a reduction in weight and size without compromising on accuracy and stability. Along with its predecessors, VIRGO and PREMOS, CLARA continues the long-term involvement of the PMOD/WRC in solar research.

The CLARA radiometer PMOD Clean-room NorSat-1 Commissioning team

Media Articles and Videos Date
Movie Sonne zur Abkühlung (3Sat)
21 Aug. 2017
Dieses Schweizer Messgerät soll klimarelevante Daten zur Sonnenstrahlung liefern

Movie Launch on 14 July 2017 (Roskosmos)
14 July 2017
Movie Launch on 14 July 2017 (YouTube)
14 July 2017
Movie Soyuz rocket on launch-pad, 11 June 2017, Baikonur, Kasachstan (YouTube)
11 July 2017

Press Releases and Factsheets Date
pdf CLARA/NorSat-1, Press Release (PMOD/WRC)
25 Aug. 2017
Successful "First Light" measurements

pdf CLARA/NorSat-1, Press Release (PMOD/WRC)
14 July 2017
Launch of the Soyuz rocket with CLARA/NorSat-1 onboard

pdf CLARA Factsheet (Norwegian Space Centre)
14 July 2017
pdf NorSat-1 Factsheet (Norwegian Space Centre)
14 July 2017

Norwegian Space Centre
14 July 2017

For further information or pictures please contact:

Personnel Dept.
Tel: +41 58 467 51 11
Fax: +41 58 467 51 00

* Picture courtesy of ESA. All other pictures copyright PMOD/WRC.

Dorfstrasse 33, CH-7260 Davos Dorf, Phone +41 58 467 51 11, Fax +41 58 467 51 00