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The earthcare satellite: The next step forward in global measurements of clouds, aerosols, precipitation, and radiation

  • A. J. Illingworth
  • , H. W. Barker
  • , A. Beljaars
  • , M. Ceccaldi
  • , H. Chepfer
  • , N. Clerbaux
  • , J. Cole
  • , J. Delanoë
  • , C. Domenech
  • , D. P. Donovan
  • , S. Fukuda
  • , M. Hirakata
  • , R. J. Hogan
  • , A. Huenerbein
  • , P. Kollias
  • , T. Kubota
  • , T. Nakajima
  • , T. Y. Nakajima
  • , T. Nishizawa
  • , Y. Ohno
  • H. Okamoto, R. Oki, K. Sato, M. Satoh, M. W. Shephard, A. Velázquez-Blázquez, U. Wandinger, T. Wehr, G. J. Van Zadelhoff
  • University of Reading
  • Environment and Climate Change Canada
  • European Centre for Medium-Range Weather Forecasts
  • CNRS
  • Laboratoire de Météorologie Dynamique
  • Royal Meteorological Institute of Belgium
  • Free University of Berlin
  • Royal Netherlands Meteorological Institute
  • Japan Aerospace Exploration Agency
  • Leibniz Institute for Tropospheric Research
  • The University of Tokyo
  • Tokai University
  • National Institute for Environmental Studies of Japan
  • Japan National Institute of Information and Communications Technology
  • Kyushu University
  • ESA-ESTEC

Research output: Contribution to journalArticlepeer-review

539 Scopus citations

Abstract

The collective representation within global models of aerosol, cloud, precipitation, and their radiative properties remains unsatisfactory. They constitute the largest source of uncertainty in predictions of climatic change and hamper the ability of numerical weather prediction models to forecast high-impact weather events. The joint European Space Agency (ESA)-Japan Aerospace Exploration Agency (JAXA) Earth Clouds, Aerosol and Radiation Explorer (EarthCARE) satellite mission, scheduled for launch in 2018, will help to resolve these weaknesses by providing global profiles of cloud, aerosol, precipitation, and associated radiative properties inferred from a combination of measurements made by its collocated active and passive sensors. EarthCARE will improve our understanding of cloud and aerosol processes by extending the invaluable dataset acquired by the A-Train satellites CloudSat, Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), and Aqua. Specifically, EarthCARE's cloud profiling radar, with 7 dB more sensitivity than CloudSat, will detect more thin clouds and its Doppler capability will provide novel information on convection, precipitating ice particle, and raindrop fall speeds. EarthCARE's 355-nm high-spectral-resolution lidar will measure directly and accurately cloud and aerosol extinction and optical depth. Combining this with backscatter and polarization information should lead to an unprecedented ability to identify aerosol type. The multispectral imager will provide a context for, and the ability to construct, the cloud and aerosol distribution in 3D domains around the narrow 2D retrieved cross section. The consistency of the retrievals will be assessed to within a target of ±10 W m-2on the (10 km)2 scale by comparing the multiview broadband radiometer observations to the top-of-atmosphere fluxes estimated by 3D radiative transfer models acting on retrieved 3D domains.

Original languageEnglish
Pages (from-to)1311-1332
Number of pages22
JournalBulletin of the American Meteorological Society
Volume96
Issue number8
DOIs
StatePublished - Aug 1 2015

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