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• Monthly statistics of wind speed (param=207) from the MetOffice seasonal forecast system (origin=egrr):
  
  • stream=msmm, type=em/hcmean/fcmean/fcmin/fcmax/fcstd
  • stream=mmsa, type=em/fcmean

• Start dates: 2017-09-01, 2017-10-01 and 2017-11-01

between 2017/11/24 at 11:00 GMT and 2017/11/28 at 12:00 GMT

after 2017/11/28 at 12:00 GMT

CDS retrievals
(forms and API) & WebAPI retrievals

• Pressure variables data from GCFS2.0-v20171123 (DWD GCFS2.0) data
  
  • Affects data from monthly and daily CDS catalogue entries for start date 2011-06-01 and member=13
  • All variables (including 'single-level') have been substituted during the recovery process

between 2019/03/12 at 11:30 GMT and 2019/03/12 at 12:05 GMT

after 2019/03/12 at 12:05 GMT

CDS retrievals
(forms and API)

Monthly statistics and anomalies data are temporarily not available for the following systems and dates:
NOTE that high-frequency data in the "daily" CDS catalogue entries are not affected

UK MetOffice (system=14): November hindcasts (1993-2016)

CDS retrievals
(forms and API) & WebAPI retrievals

• Affects all data from monthly and daily CDS catalogue entries
  • Start dates:
    
    • all November start dates for hindcasts (1993-2016)

between 2019/11/07 at 11:00 GMT and 2019/11/07 at 17:00 GMT

after 2019/11/07 at 17:00 GMT

CDS retrievals

(forms and API) & WebAPI retrievals

• Affects all data from monthly and daily CDS catalogue entries
  • Start dates:
    • all December and January start dates for hindcasts (1993-2016)

CDS retrievals

(forms and API) & WebAPI retrievals

Snowfall amount from CMCC-CM2-v20160423 (CMCC SPSv3) data:

• Affects all data from monthly and daily CDS catalogue entries
  • Start dates:
    
    • November 2018 real-time forecast.
• It also affects monthly anomalies CDS catalogue entry
  • Start dates: 2018-11-01

CDS retrievals

(forms and API) & WebAPI retrievals

Snowfall amount from CMCC-CM2-v20160423 (CMCC SPSv3) data:

• Affects monthly anomalies CDS catalogue entry
  • Start dates: 2018-12-01,  2019-01-01

CDS retrievals
(forms and API)

Monthly statistics and anomalies data are temporarily not available for the following systems and dates:
NOTE that high-frequency data in the "daily" CDS catalogue entries are not affected

NCEP CFSv2: November hindcasts (1993-2016)

CDS retrievals

(forms and API)

Monthly statistics and anomalies data are temporarily not available for the following systems and dates:
NOTE that high-frequency data in the "daily" CDS catalogue entries are not affected

NCEP CFSv2: October  hindcasts (1993-2016) and real-time forecasts for October and November 2019

Missing members from CFSv2-v20110310 (NCEP CFSv2) data.

It affects all data available in the high-frequency (daily/subdaily) datasets:

• seasonal-original-single-levels
• seasonal-original-pressure-levels

Members with start time at 06h,12h and 18h are not being retrieved from the archive by the CDS and just members with start time at 00h are returned

after 2020/05/15 at 16:30 GMT

Missing members from CFSv2-v20110310 (NCEP CFSv2) data.

It affects all data available in the high-frequency (daily/subdaily) datasets:

• seasonal-original-single-levels
• seasonal-original-pressure-levels

Members with start time at 06h,12h and 18h are not being retrieved from the archive by the CDS and just members with start time at 00h are returned.

This issue affects retrievals done after the release of the October 2020 forecast, which happened at 12UTC on the 13th of October 2020.

2m dewpoint temperature from System8-v20210101 (Méteo-France System8):

It affects:

• October 2009 data for member 3 original data (seasonal-original-single-levels) and monthly statistics (seasonal-monthly-single-levels)

Sporadic values of 1.e+20 in individual grid points on the 6-hourly original data. Note this affected a very reduced amount of grid points and time steps.

This issue affects retrievals done after the release of the October hindcasts which happened on the 16th of September of 2021.

between 2021/10/12 at 12:00 GMT and 2021/10/12 at 15:30 GMT.

DWD's July 2024 forecast contained an error at the time of its original publication; this error affected all variables in one ensemble member. The error has been corrected, the whole ensemble re-run and the correct data archived to replace the originally published data.

between 2024/07/10 at 12:00 UTC and 2024/07/16 at 13:00 UTC

CDS retrievals
(forms and API)

Pressure level variables from CMCC-CM2-v20160423 (CMCC SPSv3) data.

It affects all hindcast data from the following start dates and ensemble members:

March: 2013 (member 34)
April: 2013 (members 20 and 33)
May: 2013 (members 23, 29 and 32)
June: 2013 (member 26)
July: 1993 (members 11 and 12); 2013 (member 31)
August: 1994 (member 9); 2013 (members 21, 22, 25, 27 and 28)
September: 1998 (member 19)

All variables (pressure levels and single level)from CMCC-CM2-v20160423 (CMCC SPSv3) data.

It affects all hindcast data from the following start dates and ensemble members:

March: 2013 (member 33)
July: 1996 (member 9)

archived (wrong) data won't be overwritten
CMCC SPSv3 system has been superseded by SPSv3.5

archived (wrong) data won't be overwritten
CMCC SPSv3 system has been superseded by SPSv3.5

CDS retrievals
(forms and API)

Real-time forecast data from CMCC-CM2-v20160423 (CMCC SPSv3) data.

It affects anomalies calculated using the wrong data specified in E5.a, specifically:

Pressure variables: March to September 2019
All variables: March 2019, July 2019

CDS retrievals
(forms and API)

Surface solar radiation variables from CFSv2-v20110310 (NCEP CFSv2) data.

It affects:

• forecast data for nominal start dates October, November, December 2019 and January, February 2020
• hindcast data (1993-2016) for nominal start dates October, November, December, January and February

Two variables - "surface net solar radiation" and "surface solar radiation downwards" - have been swapped with each other. This error affects the daily data and corresponding monthly statistics and anomalies.

data with a fix for the affected start dates will be provided
(date to be determined)

data with a fix for the affected start dates will be provided
(date to be determined)

Total cloud cover from JMA cps2-v20150526 (JMA/MRI-CPS2) data.

It affects all available data for that variable (daily data, monthly data and anomalies) both for real-time forecasts and hindcast dates

Due to a bug during the data ingestion to the C3S archive the values of this parameter have been divided by 100.

Sea surface temperature and land surface temperature (called 'soil temperature level 1' in the CDS) from CMCC-CM2-v20191201 (CMCC SPSv3.5) data.

It affects the following data for those two variables:

• forecast data (daily data, monthly data and anomalies) for nominal start dates March, April, May, June and July 2022

According to CMCC report about the issue:

The problem only affects the points at the borders between the three realms (sea ice, ocean and land), and is due to a change in the land-sea or sea ice-sea mask interpolation algorithm, which was implemented in the forecasts (starting from March).
Therefore, the anomalies of the above mentioned variables show unrealistic patterns near the sea-land or sea-sea ice boundaries, because, in these grid points, the new interpolation algorithm has made the forecasts, from March onwards, inconsistent with the hindcasts.
Starting from the August 2022 real-time forecast, it will be restored the procedure used in the hindcasts.