Skip to end of metadata
Go to start of metadata

Please see the respective known issues table below for guidance and workarounds.

Amended data errors

Note: Data has been amended in the archive so all retrievals made after the completion of the recovery process (see table below) are not affected by the issues.

 Fixed issues table

Fixed issues number

Issue typeWrong DataRecovery period (some data could still be wrong)Recovery Finished (all the data has been fixed)
E1.WEB-API retrievals
  • 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

E2.

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

Not fixed data errors

The issues described in the table below have not been fixed yet

 Not fixed issues table

Not fixed issues number

Issue typeWrong DataRecovery period (some data could still be wrong)Recovery Finished (all the data has been fixed)
E3.

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:
      • all November start dates both for hindcasts (1993-2016) and 2018 real-time forecast.
      • all December and January start dates for hindcasts (1993-2016)
        (NOTE: This implies real-time forecasts for Dec.18 and Jan.19 should not be used)
  • It also affects monthly anomalies CDS catalogue entry
    • Start dates: 2018-11-01, 2018-12-01,  2019-01-01

recovery has not been yet started

NOTE: the current plan is to test the recovery of the wrong data archived before September 2019

recovery has not been yet started

E4.

CDS retrievals
(forms and API)

Monthly statistics and anomalies data are temporarily not available for the following systems and dates:

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

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

NOTE that high-frequency data in the "daily" CDS catalogue entries are not affected

recovery has not been yet started

NOTE: the current plan is to make the data available on the week commencing on the 4th of November 2019

recovery has not been yet started

Data and metadata deficiencies

 Data and metadata known issues table
Known issue numberCentreForecasts
or
Hindcasts
Start dates(1)Description
D1.

Met Office
(all systems)

BothAll

Near-surface temperatures (6-hourly and daily minimum and maximum) and dewpoint temperature are encoded as being calculated at a height of 2m.
Those parameters are calculated at 1.5 meters height in Met Office seasonal forecast systems

D2.

Met Office
(system=12)

Both


Hindcasts: May-Dec and January
Forecasts: Sep2017 to Jan2018

Global grid is incomplete (just 180 latitude points, between 90S and 89N)
Requests with MARS-based interpolations (i.e. using "grid=NN/NN") won't work unless a suitable regional subselection is requested (with "area=LL/LL/LL/LL")

Note that additionally, in this grid all points are set at integer values of latitude/longitude

D3.

All parameters on pressure levels are not globally complete, having "missing value indicators" in points below the orography.

D4.Météo-France
(system=5)
ForecastsAll

There is an issue with the postprocessing used at origin of the lagged start dates.

Only members #27 to #51 are affected having data with a time shift of 7 days (168 hours). For instance, data with date/time labelled as YYYYMM08 00h would in fact correspond to YYYYMM01 00h.

D5.CMCC
(system=3)
HindcastsYears between 1993 and 1999

There are anomalous values of SST (and associated parameters, e.g. fluxes, and vertical oceanic temperature profiles) appearing in the first hours of a very limited number of ensemble members of forecasts.

The issue is caused by a bug in the oceanic perturbation generation tools used at origin to produce the ocean initial conditions.  The errors/perturbations appear initially as excessively high SST values, confined to the reported hindcast years, in a limited number of grid points all in the tropical Pacific. They are very quickly dissipated by the coupled model physics and dynamics, affecting, therefore, only the first 24 hours of the forecasts at most.

D6.CMCC
(system=3)
BothAll

There are some variables affected by a spin-up issue. This affects just some ensemble members depending on the initial conditions each member started from. Unfortunately, as the selection of the forecast members is done randomly from a bigger pool of initial conditions, there is no metadata describing this in the current service based on GRIB files stored in ECMWF's MARS archive.

D7.

DWD
(system=2)

HindcastsAll 2017 start datesFor this forecasting system, year 2017 start dates have been computed as hindcasts and not real-time forecasts.
D8.CMCC
(system=3)
BothAllFor this forecasting system, the evaporation field is masked over the ocean (only land points are available)
D9.Met Office
(system=12,13)
BothAllThe fractional land-sea mask doesn't match the masked (land-only or sea-only) fields. For the files affected, the land-sea mask provided was produced as the result of a 1-degree interpolation of the binary land-sea mask in the native model resolution

Data gaps

Note: (1) See description of nominal start dates here

 Data gaps table
Known issue numberCentreForecasts
or
Hindcasts
Start dates(1)Description
G1.

Met Office
(system=12)

Forecasts

20180102
20180103
20180104
20180105

No data is available.
G2.

Met Office
(system=12,13)

ForecastsNominal start dates previous to November 2018Monthly statistics and anomalies are just available for 50 members - specifically, the 50 members closest and previous or equal to the 1st of the nominal start month.
G3.

MetOffice
(system=12)


ForecastsNominal start dates from February to April 2018Parameter "Soil temperature at level 1" (GRIB/MARS paramId=139) is not available.
HindcastsNominal start dates from February to April

MetOffice
(system=13)

ForecastsNominal start dates from May to December 2018
HindcastsNominal start dates from May to December