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Product details

UID	750
Name	CAMS global reanalysis / Atmospheric Composition Reanalysis 4, EAC4
Acronym	EAC4
Description	EAC4 (ECMWF Atmospheric Composition Reanalysis 4) is the fourth generation ECMWF global reanalysis of atmospheric composition. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using a model of the atmosphere based on the laws of physics and chemistry.
Note	https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-reanalysis-eac4?tab=overview
Status	Operational
Group	AMC Atmospheric Composition Reanalysis
Area	Global
Component	Atmosphere Monitoring
Service	Copernicus Atmosphere Monitoring Service
Entrusted Entities	European Centre for Medium-Range Weather Forecasts
Created on	July 25, 2022, 10:21 a.m.
Last updated on	July 28, 2022, 8:37 a.m.

UID	Requirement	Level of definition	Relevant for	Criticality	Barriers	Created on	Last updated on
462	Aerosol Optical Depth	Firm	Calibration and validation	Essential	Coverage Timeliness	July 28, 2022, 9:14 a.m.	Nov. 4, 2025, 12:07 p.m.
73	Dust AOD	Firm	Calibration and validation	Essential	Coverage Timeliness	July 28, 2022, 9:26 a.m.	July 28, 2022, 9:26 a.m.
363	o3sonde /ozonesonde	Firm	Calibration and validation	Essential	Coverage Timeliness	July 28, 2022, 9:30 a.m.	July 28, 2022, 9:30 a.m.
63	Ozone	Firm	Calibration and validation	Essential	Coverage Timeliness	July 28, 2022, 5:31 p.m.	July 28, 2022, 5:31 p.m.
519	Aircraft measurements of Ozone	Firm	Calibration and validation	Essential	Coverage Timeliness	July 28, 2022, 5:40 p.m.	July 28, 2022, 5:40 p.m.
500	Satellite Total column Ozone	Firm	Calibration and validation	Essential	N/A	July 28, 2022, 6:28 p.m.	July 28, 2022, 6:28 p.m.
554	Tropospheric Ozone	Firm	Calibration and validation	Essential	Coverage	Nov. 12, 2025, 4:10 p.m.	Nov. 12, 2025, 4:10 p.m.