ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column averaged CO2 Merged Product generated with the EMMA algorithm (CO2_EMMA), v2.2
type: Dataset
modified: 2009-05-31T23:00:00Z
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description: The CO2_EMMA dataset comprises of level 2, column-averaged dry-air mole fractions (mixing ratios) of carbon dioxide (XCO2). It has been produced using the ensample median algorithm EMMA to produce a merged SCIAMACHY and GOSAT XCO2 Level 2 product, as part of the ESA Greenhouse Gases Climate Change Initiative (GHG_cci) project. This version of the product is v2.2, and forms part of the Climate Research Data Package 4.The EMMA algorithm has been applied to level 2 data from multiple 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 merged SCIAMACHY and GOSAT XCO2 Level 2 product is 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). For 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).
temporal: PeriodOfTime
  start date: 2009-05-31T23:00:00Z
  end date: 2014-05-30T22:59:59Z

SCIAMACHY
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments

Envisat
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

TANSO-FTS
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments

GOSAT-1
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms

CatalogRecord
modified: 2026-08-05T00:48:36Z
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/9f002827ba7d48f59019fcfd3577a57e
type: CatalogRecord
conforms to: ISO19139-2

CEDA Data Catalogue Page
type: Document
description: Detail and access information for the resource

EMMA website
type: Document
description: No further details.

Product User Guide
type: Document
description: No further details.

GHG
type: Document
description: CCI Data Products webpage - No further details.

Reuter et al, 2013,'A joint effort to deliver satellite retrieved atmospheric CO2 concentrations for surface flux inversions: the ensemble median algorithm EMMA'
type: Document
description: No further details.

Product Validation and Intercomparison Report (PVIRv5)
type: Document
description: No further details.

Sample Image
type: Document
description: No further details.

ESA CCI Greenhouse Gases project website
type: Document
description: No further details.

EARTH SCIENCE>ATMOSPHERE>ATMOSPHERIC CHEMISTRY
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

EARTH SCIENCE>ATMOSPHERE>ATMOSPHERIC CHEMISTRY>CARBON AND HYDROCARBON COMPOUNDS>ATMOSPHERIC CARBON DIOXIDE
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

ENVISAT
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

GOSAT
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

SCIAMACHY
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments

TANSO-FTS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments