Page 1 EarthCARE The Earth Cloud Aerosol and Radiation Explorer Tobias Wehr ESA/ESTEC, Noordwijk, The Netherlands.

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Page 1 EarthCARE The Earth Cloud Aerosol and Radiation Explorer Tobias Wehr ESA/ESTEC, Noordwijk, The Netherlands

Page 2 ESA’s Living Planet Programme Service drivenResearch driven Earth ExplorerEarth Watch Core Missions Opportunity Missions GOCE 2008 EarthCARE 2013 ADM-Aeolus 2010 CryoSat SMOS 2009 Swarm 2010 Sentinel 1 Sentinel 2 Sentinel 3 Sentinel 4 Sentinel 5 Meteosat MSG MTG EPS Post EPS Earth Explorer ? GMEScoop. with EUMETSAT

Page 3 Six Approved Earth Explorer Missions Cryosat 1 & 2 Sea Ice thickness and Ice sheet topography GOCE Gravity Field and Steady State Ocean Circulation Explorer ADM-Aeolus Atmospheric Dynamics Mission EarthCARE Cloud, Aerosols & Radiation Explorer SMOS Soil Moisture and Ocean Salinity Swarm Geomagnetic field survey

Page 4 The Earth Explorer Core Mission EarthCARE Goal: Reconstruction of vertical cloud/aerosol profiles and combine these with across-track imager information to derive accurately instantaneous radiative fluxes Scope: Global simultaneous observations of cloud- aerosol-radiation and cloud-aerosol-precipitation- convection processes.

Page 5 EarthCARE Mission Objectives: Improve the understanding of cloud-aerosol-radiation interactions and provide an appropriate data basis for required GCM improvements. Required global observations:  Cloud distribution, including overlap  Cloud-precip interactions and vertical motion within clouds  Vertical distribution of liquid water and ice  Vertical profiles of aerosols, also simultaneously with cloud observations  Reconstructed 3D-scenes of clouds and aerosols  Collocated and simultaneous observations of clouds, aerosols and radiation  Radiative transfer calculations on reconstructed cloud and aerosol scenes to derive heating rates & flux and compare this to observed collocated TOA broad-band fluxes, on 10km x 10km pixel level

Page 6 Observation Technique – Mission Concept Vertical profiles of extinction and characteristics of aerosols Convective updraft and ice fall speed Convective updraft and ice fall speed Horizontal structure of clouds and aerosols Needs Broadband Radiometer Multispectral Imager Doppler Radar Radar High spectral resolution Lidar Techniques CPR Dopplerised CPR Dopplerised MSI BBR ATLID EarthCARE instruments Temperature and humidity from operational analysis Shortwave and longwave fluxes at Top of Atmosphere Vertical profiles of liquid, supercooled and ice water, cloud overlap, particle size and extinction

Page 7 Instruments viewing geometry ATLID < 5/12 m Sampling < 70/100 m CPR 750 m Sampling 1 km averaging 10 km BBR 10 km  10 km BBR Forward view BBR Backward view 55° BBR Nadir view 10 km  10 km Sampling < 10 km 50° 2° MSI 500 m  500 m Sampling < 500 m Swath 150 km 150 km 55° Time difference between acquisitions: Radar-Lidar: 2.2 s Radiometer nadir-fw/bw: 77 s Pixel co-location: Radar-Lidar: < 350 m RMS Orbit: sun-synch polar 13:45–14:00 LTDN around 400(-450) km flight direction

Page 8 Technical Status In Europe  EarthCARE industrial contract status - Phase B-C/D-E1:  Contract with Astrium-GmbH signed in May 2008 at ILA Berlin in presence of German Chancellor Dr. Angela Merkel  Phase B activities started mid-February 2007  All core-team kicked-off at same session  Spacecraft Prime: Astrium GmbH  Base-Platform: Astrium-Ltd  ATLID: Astrium-SAS with G.A as sub-contractor  BBR: SEA with RAL as sub-contractor  MSI: SSTL with TNO as sub-contractor  Full industrial team to be completed during phase B  EarthCARE Overall Schedule:  Phase B K/O: Mid-Feb duration ~ 15 months  Phase C/D K/O: June duration ~ 50 months  Launch date: Sept 2013

Page 9 Joint Mission Advisory Group: Howard Barker Anton Beljaars Franz Berger Jean-Pierre Blanchet David Donovan Martial Haeffelin Anthony J. Illingworth* Gelsomina Pappalardo Jaques Pelon Ulla Wandinger *Co-chairs and overall science leaders *Part of ACE SWG Hiroshi Kumagai Takashi Nakajima Terry Nakajima* Hajime Okamoto Nobue Sugimoto Yukari Takayabu Observers: John Bates Graham Feingold Graeme Stephens Deborah Vane David Winker Agencies: ESA EarthCARE Mission Scientist:Tobias Wehr ESA EarthCARE Project Manager:Alain Lefebvre and team JAXA EarthCARE CPR Project Manager:Toshiyoshi Kimura and team

Page 10 Data Products and Processing Chain under Consideration CPR Dopplerized Radar target mask ice clouds vertical motion precipitation Synergistic products aerosol Synergistic products target classification ice cloud liquid cloud ATLID High spectr. res. Lidar target mask lidar extinction aerosol ice clouds Modelled broad-band radiance, flux, heating rates,... compare BBR Broad-band radiances short wave total wave TOA flux estimates Scene classification ADM MSI Vis/NIR/SWIR/TIR cloud aerosol 3D Scenes Reconstruction scale: ~4x BBR pix size? ?

Page 11 The EarthCARE Simulator D. Donovan et al. Atmospheric scenarios Simulated measurements Forward model Retrieval algorithms Retrieved parameters comparison Example of ‘simple’ scene (scale of BBR footprint) Stratus cloud Cirrus cloud Aerosol Simple scenes or complex scenes with highly detailed cloud and aerosol microphysics Resolution down to 25 m 3-dimensional Monte-Carlo radiative transfer code for long- and short-wave radiation including multiple scattering (also for lidar) Instrument characteristics including noise, sampling and footprints Retrieval algorithms implemented (and growing!)

Page 12 Getting Involved with EarthCARE Most effective: bring along your own funding and team up Might also work: respond to study ITTs (if you are in Europe or Canada) Attend EarthCARE Workshops: about every ~two years Next workshop: Kyoto, Japan, June 2009 (to be announced) Latest workshop: ESA/ESTEC, Netherlands, May 2007