EGU23-7221, updated on 25 Feb 2023
https://doi.org/10.5194/egusphere-egu23-7221
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Total Solar Irradiance and Terrestrial Outgoing Longwave Radiation Measurements obtained with CLARA onboard NorSat-1

Margit Haberreiter1, Wolfgang Finsterle1, Jean-Philippe Montillet1, Manfred Gyo1, Dany Pfiffner1, Martin Mostad2, Ivar Spydevold2, Alex Beattie3, Bo Andersen4, and Werner Schmutz1
Margit Haberreiter et al.
  • 1PMOD/WRC, Davos Dorf, Switzerland (margit.haberreiter@pmodwrc.ch)
  • 2Statsat, Oslo, Norway
  • 3UTIAS, Toronto, Canada
  • 4University of Oslo, Norway

The Earth Radiation Budget at the Top of the Atmosphere (ToA) governs the status of climate change on our planet. The ERB is the balance between the incoming Total Solar Irradiance (TSI) and total outgoing radiation at the ToA. If more energy is stored in the system the Earth Energy Imbalance is positive and the temperature in the system rises. The Compact Lightweight Absolute RAdiometer (CLARA) experiment onboard the Norwegian micro satellite NorSat-1 is an SI traceable radiometer with the primary science goal to measure TSI from space. Besides TSI, CLARA also measures the terrestrial Outgoing Longwave Radiation (OLR) at the ToA on the night side of Earth. We present the latest status of the data and degradation correction obtained with this SI-traceable radiometer and compare the CLARA TSI and OLR time series with other available observations and reanalysis data. The validation of these measurements is key to advance our capability to determine the Earth Energy Imbalance from space. 

How to cite: Haberreiter, M., Finsterle, W., Montillet, J.-P., Gyo, M., Pfiffner, D., Mostad, M., Spydevold, I., Beattie, A., Andersen, B., and Schmutz, W.: Total Solar Irradiance and Terrestrial Outgoing Longwave Radiation Measurements obtained with CLARA onboard NorSat-1, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-7221, https://doi.org/10.5194/egusphere-egu23-7221, 2023.

Supplementary materials

Supplementary material file