CAMS global atmospheric composition forecasts vs analysis

Could you help me understand the difference between data from forecast and data from analysis? Is there any difference between data from analysis and forecast using leading hour 0?

Thank you for clarification.

Hi,

Please have a look at the following link: ERA5 terminology: analysis and forecast; time and steps; instantaneous and accumulated and mean rates and min/max parameters - Copernicus Knowledge Base - ECMWF Confluence Wiki

Thanks

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