River discharge Water Level Flow Velocity Cross-section NO 2 tropospheric column SO 2,HCHO tropospheric columns CO tropospheric column CO tropospheric profileĭefinitions, requirements, and network information of ECVs are provided by the Global Observing Systems Information Center (GOSIC) or available as excel sheets for download: ECV-Land matrix ECV

Precursors (supporting the Aerosol and Ozone ECVs) Total column ozone troposphere Ozone Ozone profile in upper and lower stratosphere Ozone profile in upper strato-and mesosphere Tropospheric CO 2 column Tropospheric CO 2 Tropospheric CH 4 column Tropospheric CH 4 Stratospheric CH 4 Optical depth single-scattering albedo layer height extinction profiles for the troposphere and the lower to middle stratosphereĬarbon Dioxide, Methane and other Greenhouse gases Total column-water vapour Tropospheric and lower-stratospheric profiles of water vapour Upper tropospheric humidityĬloud amount Cloud Top Pressure Cloud Top Temperature Cloud Optical Depth Cloud Water Path (liquid and ice) C, effective particle radius (liquid and ice) Tropospheric Temperature profile Stratospheric Temperature profile Temperature of deep atmospheric layers Top-of-atmosphere ERB longwave Top-of-atmosphere ERB shortwave (reflected) Total solar irradiance Solar spectral irradiance Surface ERB longwave Surface ERB shortwave ĭefinitions, requirements, and network information of ECVs are provided by the Global Observing Systems Information Center (GOSIC) or available as excel sheets for download: ECV-Atmosphere matrix ECVĮstimates of liquid and solid precipitation The ECV inventory of the joint Committee on Earth Observation Satellites (CEOS)/ Coordination Group for Meteorological Satellites (CGMS) working group on climate (WGClimate) provides data of ECVs measured from space. GCOS Program at NCEI on behalf of the global observing community. National Oceanic and Atmospheric Administration (NOAA) and the U.S. It is maintained by the National Centers for Environmental Information (NCEI) of the U.S. The Global Observing Systems Information Center (GOSIC) provides further background, definitions, requirements, network information and data sources for the ECVs. Cost effectiveness: Generating and archiving data on the variable is affordable, mainly relying on coordinated observing systems using proven technology, taking advantage where possible of historical datasets.ĮCVs are observed according to the GCOS Climate Monitoring Principles.Feasibility: Observing or deriving the variable on a global scale is technically feasible using proven, scientifically understood methods.Relevance: The variable is critical for characterizing the climate system and its changes.ECV datasets provide the empirical evidence needed to understand and predict the evolution of climate, to guide mitigation and adaptation measures, to assess risks and enable attribution of climate events to underlying causes, and to underpin climate services.They are required to support the work of the UNFCCC and the IPCC.ĮCVs are identified based on the following criteria:

Cloudy water weather indicator