1. CGMS-38, New Delhi, 8-12 November 20101 CGMS-38 WMO-WP-08 10 October 2010 Prepared by WMO Agenda Item: D.1 Discussed in Plenary Dossier on the space-based GOS Presented by B. Bizzarri on appointment by WMO The GOS Dossier comprises an introduction followed by five volumes. - Vol. ISatellite programmes description - Vol. IIEarth observation satellites and their instruments - Vol. IIIGap analysis in the space-based component of GOS - Vol. IVEstimated performance of products from typical satellite instruments - Vol. VCompliance analysis of potential product performances with user requirements. The Dossier should be downloaded from: ftp://ftp.wmo.int/Documents/PublicWeb/sat/DossierGOS. This presentation highlights major updates after the main issue (January 2010).

2. CGMS-38, New Delhi, 8-12 November 20102

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5. 5 Exploitation of the information from the GOS Dossier Support to the Rolling Review Requirement process in WMO: - proposed streamlining of user requirements to facilitate compliance analysis. Support to the CEOS Missions, Instruments and Measurements database (MIM): - specific assistance for a new section correlating instruments with products. New study on the gap analysis for the GCOS Essential Climate Variables: - see CGMS-38 WMO-WP-04 (index in the next slide). Update of the CIMO Guide dealing with observations from Space: - see draft index in the second-next slide.

6. CGMS-38, New Delhi, 8-12 November 20106 INDEX of CGMS-38 WMO-WP-04 MAPPING OF THE GAP ANALYSIS (DOSSIER GOS 2010) WITH THE GCOS ECV 1.Introduction 2.Definition of the Essential Climate Variables 3.Identification of the measurements implied by the ECVs 4.Short-list: ECVs based on components observable from satellite 5.Gap analysis 6. Conclusion and important notice 6.1Requirements coverage 6.2Time coverage 6.3Systematic gaps 6.4Important warning Appendix 1 - Instruments/missions gap analysis in the period 2008-2025 Appendix 2 - Acronyms and lists of satellites and instruments

7. CGMS-38, New Delhi, 8-12 November 20107 CIMO GUIDE, PART II - CHAPTER 8: SATELLITE OBSERVATIONS PREAMBLE 8.1PRINCIPLES OF EARTH OBSERVATION FROM SPACE 8.1.1Orbits and Earth viewing from space 8.1.2Principles of remote sensing 8.1.3Data circulation and processing 8.2PRINCIPLES OF REMOTE SENSING INSTRUMENTS (from Dossier vol. II) 8.2.1Instruments basic characteristics 8.2.2Visible and Infrared imagers 8.2.3 Infrared sounders 8.2.4 Microwave imagers and sounders 8.2.5 Spectrometers for atmospheric chemistry 8.2.6 Special instruments 8.2.7 Radar 8.2.8 Lidar 8.2.9 In-situ measurements at platform level 8.3SATELLITE PROGRAMMES (from Dossier vol. I) 8.3.1Meteorological satellites in geostationary orbit 8.3.2Meteorological satellites in sunsynchronous orbit 8.3.3Earth resources satellites 8.3.4Oceanographic satellites 8.3.5Missions to Solid earth and Cryosphere 8.3.6Missions for surveillance/security and disasters monitoring 8.3.7Scientific research or demonstration satellites and other programmes 8.4OBSERVATION OF GEOPHYSICAL VARIABLES (from Dossier vol. IV) 8.4.1Basic atmospheric 3D and 2D 8.4.2Cloud and precipitation 8.4.3Aerosols and radiation 8.4.4Ocean and sea ice 8.4.5Land surface (including snow) 8.4.6Atmospheric chemistry 8.4.7Solid Earth 8.4.8Space Weather 8.5LONG-TERM TRENDS AND CRITICAL ISSUES (from Dossier vol. III) 8.5.1Data access 8.5.2Calibration and validation 8.5-3Further developments needed

8. CGMS-38, New Delhi, 8-12 November 20108 Recommended Actions CGMS Satellite Operators are invited to: - note the October 2010 issue of the GOS Dossier, which is on line at: ftp://ftp.wmo.int/Documents/PublicWeb/sat/DossierGOS, and - to forward to WMO (bibizzar@tin.it) any update or missing information concerning their programmes for inclusion in the January 2011 issue of the Dossier.