{"ob_id":14579,"uuid":"3e06538585d04d9e8c848215eedeb5a4","title":"ESA Greenhouse Gases Climate Change Initiative (GHG CCI): Merged CO2 Level 2 Data Product (CO2_EMMA), version 2.1, generated with the EMMA algorithm","abstract":"Part of the European Space Agency's (ESA) Greenhouse Gases (GHG), the XCO2 EMMA product comprises a level 2, column-averaged dry-air mole fraction (mixing ratio) for carbon dioxide (CO2). The product has been produced by applying the ensemble median algorithm EMMA to level 2 data of 7 XCO2 retrievals from the Japanese Greenhouse gases Observing Satellite (GOSAT) and the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on board the European Space Agency's environmental research satellite ENVISAT.   This is therefore a merged SCIAMACHY and GOSAT XCO2 Level 2 product, primarily used as a comparison tool to assess the level of agreement / disagreement of the various input products (for model-independent global comparison, i.e. for comparisons not restricted to TCCON validation sites and independent of global model data). This version of the product covers 4 years.  \r\n\r\nFor further information on the product and the EMMA algorithm please see the EMMA website, the GHG-CCI Data Products webpage or the Product Validation and Intercomparison Report (PVIR) in the documentation section.\r\n\r\nThe GHG-CCI team encourage all users of their products to register with them to receive information on any updates or issues regarding the data products and to receive notification of new product releases. To register, please use the following link: http://www.iup.uni-bremen.de/sciamachy/NIR_NADIR_WFM_DOAS/CRDP_REG/","keywords":"ESA, GHG, CCI, CH4, SCIAMACHY, WFMD, Greenhouse Gas","publicationState":"published","dataPublishedTime":"2016-04-11T08:19:42","doiPublishedTime":null,"updateFrequency":"","status":"superseded","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/14580/?format=json","dataPath":"/neodc/esacci/ghg/data/crdp_3/EMMA/CO2/v2.1/","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":426649547,"numberOfFiles":3533,"fileFormat":"Data are in NetCDF format"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/3851/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/50416/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50542/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/50543/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55527/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55529/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55530/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55531/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55532/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55533/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55534/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55535/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55536/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55537/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/55538/?format=json"],"dataLineage":"Data were processed by the ESA CCI GHG project team and supplied to CEDA as part of the ESA CCI Open Data Portal Project","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":[],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/13295/?format=json"],"observationcollection_set":["https://catalogue.ceda.ac.uk/api/v2/observationcollections/12808/?format=json"],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/56541/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/56540/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/56539/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/56538/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/104952/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/105170/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/105348/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/56542/?format=json"],"procedureAcquisition":null,"procedureCompositeProcess":null,"procedureComputation":null,"permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2564/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"public","accessRoles":null,"label":"public: None group","licenceURL":"https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_ghg_terms_and_conditions.pdf","licenceClassifications":"any"}],"discoveryKeywords":[{"ob_id":1138,"name":"NDGO0003"}]}