Key information on systematic observation >> UNFCCC documents on systematic observation Global Climate Observing System (GCOS) Report on the Adequacy of the Global Climate Observing Systems (November 1998) Second Report on the Adequacy of the Global Observing Systems for Climate in Support of the UNFCCC (April 2003) Implementation Plan of the Global Observing System for Climate in Support of the UNFCCC (October 2004) Analysis of data exchange problems in global atmospheric and hydrological networks (February 2005) Progress Report on the Implementation of the Global Observing System for Climate in Support of the UNFCCC 2004-2008 (April 2009) Synthesis of National Reports on Systematic Observation for Climate (April 2009) 2010 Update of Implementation Plan for the Global Observing System for Climate in Support of the UNFCCC (August 2010) 2011 Update of Systematic Observation Requirements for Satellite-based Data Products for Climate (December 2011) >>Publications by the GCOS Global Terrestrial Observing System (GTOS) >> Publications by the GTOS Global Ocean Observing System (GOOS) >> Publications by the GOOS Global Framework for Climate Services World Climate Conference 3 (31 August - 4 September 2009) outcomes High-level Task Force on Global Framework for Climate Services (HLT-GFCS)