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2017

21-11-2017 HW issue affecting some S2S hindcasts availability

We have recently experienced a couple of hardware incidents with tape volumes becoming damaged:

  1. During October 2017, a large proportion of hindcast (enfh), perturbed forecast (pf), single level data (sfc) was not available from tape. Data cached on disk would not be affected, but data from tape would fail. This problem was resolved on 8th November 2017.
  2. From beginning of November 2017 until 21st November, half of the hindcast (enfh), perturbed forecast (pf), pressure level data (pl) are not available from tape.

Unfortunately, requests for data from damaged tapes were blocking access to all S2S data. In order to prevent blocking all S2S service via the WebAPI, we disabled access to (2) during the specified period. We apologise for any inconvenience.

As of   14:30 UTC access to all hindcasts has been restored.

07-11-2017 New ISAC fixed reforecast set

New fixed ISAC reforecast set was added to S2S archive. The new model version date it relates to is 2017-06-08. The new reforecasts contain now newly perturbed outputs as well and the lead time has been extended to +32 days. The data availability can be discovered as usually via the dedicated S2S data portal at ECMWF.

03-11-2017 Update on the data issues in Meteo-France outputs

The Meteo-France ssrd field is actually correct. The issue described previously only concerns the French seasonal forecast system but not the S2S one. However there is a newly acknowledged 10-meter wind fields issue - both the zonal and meridian components are effectively wrong. For more details go to the data issues page.

01-11-2017 New JMA fixed reforecast set

New fixed JMA reforecast set was added to S2S archive. The new model version date it relates to is 2017-01-31. Comparing to the previous set of JMA reforecasts (with the preivous model version date 2014-03-04)  it has two more year longer reforecast period 1981-2012. The data availability can be discovered as usually via the dedicated S2S data portal at ECMWF.

19-10-2017 Issues with some pressure level KMA data fixed

The problems with U/V  and geopotential fields (500 hPa and higher levels only) in pressure level outputs from KMA were fixed. The affected data in MARS was re-archived (period between the 29th March and end of August, 2017). For more details, please visit the page about Issues with data.

09-10-2017 Issue with data (Meteo-France, ssrd)

All surface solar radiation downwards (ssrd) data  from Meteo-France is wrong.  Please see update from 03-11-2017 above. For more details go  to the data issues page.

11-08-2017 Issue with data (KMA 500 hPa geopotential)

The model outputs from KMA - 500 hPa geopotential fields are wrong since the 29th March, 2017. For more details go directly to the data issues page.

13-06-2017 Issues with data

The Issues with data page was updated with newly acknowledged data issues in S2S archive:

  • KMA: problematic wind components fields on pressure levels
  • JMA:
    • wrong valid times of the maximum/minimum temperature
    • wrong accumulated parameters(except for total precipitation)

For more details go directly to the data issues page.

08-06-2017 ISAC-CNR change

The ISAC-CNR real-time forecast length has been increased to 32 days since Thursday, the 8th of June 2017. Further, since the same model run date the vertical speed has been added to all archived pressure levels instead of previous 500 hPa only.

08-06-2017 HMCR starting day change

The both HMCR runs (real-time and forecast) are starting now on Thursdays instead of Wednesdays. The 1st affected runs are from Thursday 8th of June 2017. This change was done to facilitate the usage of S2S re-forecasts (to have them starting all on the same week day).

23-05-2017 S2S user survey

The results of the 1st S2S user survey have been published (link to pdf document). The total number of 116 users answered various questions about their experience with S2S products.

22-03-2017 JMA model change

A new version of JMA forecasting system (GEPS1701) has been introduced since the run on 22nd March, 2017. More information... here.

22-02-2017 UKMO reforecast system update

The number of ensemble members for each hindcast year in UKMO re-forecasts  has been increased from 3 to 7. The first affected model run is from the 25th of March, 2017. More information ... here.

20-01-2017 ISAC-CNR starting day change

Since the 19th of January 2017 the ISAC-CNR re-forecasts' starting date has been changed from Monday to Thursday. The last archived Monday's outputs are from the 16th of January 2017. This change was done to facilitate usage of S2S re-forecasts data where 10 models from 11 have now the starting date on Thursdays. For example it makes possible to produce a multi-model ensemble easily.

10-01-2017 KMA forecasts added to S2S database

The both real-time and re-forecast outputs from KMA model have been archived in S2S database starting from the 1st of November, 2016. More information ... here.

2016

22-11-2016 ECMWF model change

A new  ECMWF model version (CY43R1) was released. It affects the ECMWF's outputs for S2S since the Thursday run on the 24th of November.  More information ... here.

24-10-2016 UKMO reforecast system update

The UKMO re-forecasts have been extended backwards to have all available hindcast years(1993 to 2015) since April 17, 2016 already. More information ... here.

10-10-2016 Vertical velocity(w) archiving extended in ECMWF outputs

Following S2S steering group recommendation the vertical velocity(w) archiving has been extended in ECMWF real-time and re-forecast outputs from one vertical level (500 hPa) to the same vertical levels as u and v velocity components since October 3, 2016.

27-09-2016 Vertical velocity(w) archiving extended in CMA real-time forecasts

Following S2S steering group recommendation the vertical velocity(w) archiving has been extended in CMA real-time forecasts from one vertical level (500 hPa) to the same vertical levels as u and v velocity components since September 18, 2016.

15-09-2016 S2S forecast products

A new range of near-real time forecast charts based on the Sub-seasonal to Seasonal predictions (S2S) database is now openly available at: www.ecmwf.int/en/research/projects/s2s/charts/s2s

They can be used to monitor the S2S data and assess the quality of the forecasts, as well as providing a testbed for the development of new products, for example to identify signals for extreme events at the sub-seasonal timescale. The products include ensemble mean anomalies for some meteorological parameters, Extreme Forecast Index (EFI) for 2m temperature and forecasts of the Madden and Julian Oscillation (MJO). Since S2S is a research project, the forecasts are available with a 3-week delay; they are not intended for operational use.

Currently the S2S charts are limited to six models. In future all 11 S2S models will be included and the range of products will be extended. More information will be available ...here.

17-08-2016 UKMO reforecast system change

The UKMO re-forecasts have been extended with 3 more hindcast years (1993, 1994 and 1995) since August 17, 2016. More information ... here.

29-06-2016 ECCC forecasts added to S2S database

The both real-time and re-forecast outputs from ECCC model have been archived in S2S database started on January 7, 2016. More information ... here.

17-06-2016 Meteo-France interpolation error fixed

The interpolation problem in all Meteo-France real-time data in the period 19.5.-16.6. was fixed. The affected data in MARS was re-archived with the corrected one on June 17. For more details, please visit the page about Issues with data.

24-05-2016 CMA initial conditions real-time data problem fixed

The problem with initial conditions in some CMA real-time data in January 2015 and 2016 was fixed. The affected data in MARS was re-archived. For more details, please visit the page about Issues with data.

07-05-2016 More resources available for ECMWF's S2S Data Portal

In the last few months we have experienced an increase in the number of users and requests accessing re-forecast data. Substantial disk space has made available in order to keep such data cached on disk. Users should experience a much better throughput, specially for re-forecasts of models with fixed configurations.

25-04-2016 UKMO reforecast system change

The UKMO re-forecasts have been extended with 6 more hindcast years (2010 to 2015) since April 25, 2016. More information ... here.

13-04-2016 Météo-France (lfpw) real-time forecast update

The real-time forecast frequency was changed from once per month to weekly and the length of forecast was changed from 61 to 32 days. The first date archived with this new setup is 3rd March 2016. More information... here.

31-03-2016 CMA sea-ice cover issue fixed

For more details, please visit the page about Issues with data.

23-03-2016 More issues with data: problems with sea-ice cover from CMA and BoM

Sea-ice cover data from BoM and CMA have problems, mostly in the re-forecast. Users are recommended not to make use of this data until it has been replaced in the S2S Archive, which we aim to do in the coming weeks. This will be announced to users. For more details, please visit the page about Issues with data.

08-03-2016 ECMWF forecast system change

Update of ECMWF forecast system. A new version of ECMWF model (IFS cycle 41r2) was introduced at ECMWF. 

The main consequences for ECMWF-S2S data are:
  • Introduction of a new model grid: the reduced Gaussian octahedral grid;
  • Horizontal resolution of the ENS increased from TL639 / N320 to TCO639 / O640 for ENS (Days 0 - 15) and from TL319 / N160 to TCO319 / O320  for ENS Extended (Days 16 - 46), where subscript C stands for cubic and O for octahedral;
  • For the medium-range ENS there will no longer be a decrease of resolution at day 10: the ENS Days 11 - 15 will be run at the same TCO639 / O640 resolution as ENS Days 0 - 10;

Click  here for full details.

13-01-2016 ECMWF e-suite tests

The new upcoming version of ECMF model has been tested. Both runs Monday's and Thursday's of real-time forecast and hindcasts have been tested to be prepared for smooth switching to the new version soon.

06-01-2016 UKMO reforecasts added to S2S database

The on-the-fly produced UKMO re-forecasts have been added to S2S database with the 1st archived date January 1, 2016. More information ... here.

05-01-2016 NCEP reforecasts complete

NCEP re-forecasts archiving for the fixed period 1999-2010 was completed. The whole period is now fully available for users.

2015

10-12-2015 UKMO real-time forecasts model added to S2S database

The real-time part of UKMO model outputs started to be archived in S2S database since December 1, 2015. More information ... here.

04-12-2015 ISAC-CNR model added to S2S database

The model outputs from ISAC-CNR were added to S2S database. The 1st available date is November 9, 2015. More information ... here.

10-10-2015 Issues with data

A page Issues with data was created with the intention to make users aware of important issues with the data. We suggest users to 'Watch' that page so they should get notified of any issue we believe is relevant. More information... here.

06-10-2015 Scripts to help retrieving reforecasts data

We have documented a couple of cases on how to write scripts to retrieve data efficiently via the WebAPI. In order to do that one needs to know the frequency and availability of each Centre's re-forecast. These use cases are linked in the page with models' description (click on the model name in the first column there)

For example the links to BoM or CMA use cases are here:
BoM: https://software.ecmwf.int/wiki/display/S2S/BoM+re-forecast+efficient+retrieval
CMA: https://software.ecmwf.int/wiki/display/S2S/CMA+re-forecast+efficient+retrieval

06-10-2015 Availability of reforecasts

The web interface to access re-forecasts was opened. The interface is available here.

07-09-2015 Météo-France (lfpw) reforecast update

The re-forecast frequency was changed from once to twice per month. More information... here.

26-06-2015 HMCR model added to S2S database

The real-time part of HMCR model was added to S2S database. More information ... here.

26-06-2015 Météo-France added to S2S database

A new model was added to S2S database. More information ... here.

10-06-2015 CMA added to S2S database

A new model was added to S2S database. More information ... here.

14-05-2015 ECMWF model upgrade

The major difference for S2S database is the model running frequency change to twice a week and the extension of the forecast length to 46 days. More information ... here

06-05-2015 S2S database launch at ECMWF

The official launch of S2S database 

Near real-time forecasts from four data providers (BoM, ECMWF, JMA and NCEP) have been ingested routinely since January 2015.

More information... here.

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