I downloaded ERA5-Land Monthly Data and computed global statistics for leaf area index (LAI, m²/m²; sum of low and high vegetation), total precipitation (mm), and surface solar radiation downwards (J/m², converted to MJ/m² by dividing by
10^6). The statistics from 2020 to 2024 are globally area-weighted, excluding non-vegetated areas. The leaf area index appears nearly identical across these years, while monthly radiation and precipitation values in 2023 are abnormally lower, likely due to artifact errors. Has anyone encountered the same issue?
Give a look at the point 7. in this page: ERA5-Land: data documentation - Copernicus Knowledge Base - ECMWF Confluence Wiki
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Thanks for your response. Seems that this link is dead. Could you help to double check it?
Link should be working now
Thank you for the clarification; it’s very helpful. I’ve outlined the issue and solution below for others to reference.
An issue with the ERA5-Land monthly averaged data from 1950 to present dataset was identified in January 2024 on both CDS discs and MARS tapes. It affects the following part of the dataset:
Product: Monthly averaged reanalysis
Time period: from September 2022 to February 2024
Area: Global
Variables: all accumulated variables (please refer to Table 3 in ERA5-Land documentation)
Incorrect data for period September 2022 to February 2024 is no longer available to download using the interactive CDS Download data form over the web, but remains accessible for the time being via CDS API or direct MARS access.
Incorrect data from September 2022 to February 2024 will not be replaced on CDS discs nor MARS tapes. Instead users can recover the same (and correct) data using the product monthly averaged reanalysis by hour of day at 00:00.
A fix was implemented for ERA5-Land monthly averaged data stored on CDS discs in time for the release of March 2024 monthly averaged data (i.e. from March 2024 onwards).
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