Day 4

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Paper title Defining validation protocols for space-borne aerosol and cloud profile products
Authors
  1. Eleni Marinou National Observatory of Athens Speaker
  2. Holger Baars Leibniz Institute for Tropospheric Research (TROPOS)
  3. Stephanie Rusli European Space Agency (ESA-ESTEC), Noordwijk, The Netherlands
  4. Rob Koopman ESA
  5. Jonas von Bismarck ESA - ESRIN
  6. David Patrick Donovan Royal Netherlands Meteorological Institute (KNMI)
  7. Moritz Haarig Leibniz Institute for Tropospheric Research (TROPOS)
  8. Shannon Mason European Centre for Medium-Range Weather Forecasts (ECMWF)
  9. Pavlos Kollias Stony Brook University, Stony Brook, NY, United States
Form of presentation Poster
Topics
  • A1. Atmosphere
    • A1.09 EarthCARE: Preparing for the Scientific Mission Exploitation to Quantify the Impact of Clouds and Aerosols on Radiation
Abstract text Validation activities are critical to ensure the quality, credibility, and integrity of Earth observation data. With the deployment of advanced active remote sensors in space, a clear need arises for establishing best practices in the field of cloud and aerosol profile validation. The upcoming EarthCARE mission brings several validation challenges arising from the multi-sensor complexity/diversity and the innovation of its standalone and synergistic products. EarthCARE is a joint ESA-JAXA mission to study interactions between clouds, aerosols, and radiation and their fundamental roles in regulating the climate system. Owing to its active remote sensing payloads, i.e. Atmospheric Lidar (ATLID) and Cloud Profiling Radar (CPR), EarthCARE is capable of performing range-resolved measurements of clouds and aerosols, which are demanding in terms of validation needs and related protocols. Furthermore, special protocols are also needed for the validation of radiance measurements from the opposite viewing direction.
With the involvement of international ground-based networks and airborne facilities in the EarthCARE validation community, there will be a wealth of correlative datasets for Cal/Val purposes. Efficient coordination will be needed between the instrument PIs (orbital and suborbital), the validation teams along with algorithm teams from related missions, and the end-user community (e.g., the Climate Change Initiative and Copernicus Earth observation program). The building blocks in this procedure will be lessons learned from previous Cal/Val studies (including CALIPSO, Cloudsat, GPM, and Aeolus), as well as the well-established QC/QA procedures adopted by the related European Research Infrastructures and metrological institutes (e.g., ACTRIS i.e. Aerosol Cloud and Trace Gasses Research Infrastructure, WMO-WRDC i.e. World Meteorological Organization - The World Radiation Data Centre). The approach will evolve from a review of the current literature, and will be consolidated in consultation with the community at workshops and via the EarthCARE Validation portal.
The presentation will address the development status of the protocols, and explain how the broader community can participate in their formulation. Contributions from the cloud and aerosol communities are expected to gradually broaden the coverage of the validation protocols. While initially focusing on EarthCARE, the best validation practices could be extended to other current and future missions (e.g., ESA Aeolus and its follow on mission, NASA EOS/AOS i.e. Earth System Observatory / Atmosphere Observing System, and WIVERN i.e. WInd VElocity Radar Nephoscope).