New version of ECMWF IFS model (cycle 48r1) has been introduced at ECMWF since 6Z run on 2023-06-27. 

With IFS Cycle 48r1, the horizontal resolution of the  medium-range ensemble  (ENS) will increase from 18 to 9 km. This will bring the ENS to the same horizontal resolution as the high resolution forecast (HRES). The vertical resolution for both ENS and HRES will remain at 137 model levels and the ENS will continue to have 51 members. For TIGGE, the IFS data is interpolated to the same resolution O640 as up to now.

More details can be found in TIGGE model upgrades#ECMWF

After the KMA model update on 1^th of July 2022,the values of  Surface net solar radiation were wrong . Also there were some occasional unwanted zero values for some other parameters (2t, 2d, tcc, 10m u/v etc). The affected data has been fixed now.

Find more information in Issues with data.

The KMA has changed their model used for TIGGE contribution from Unified Model  to Korean Integrated Model ensemble (KIM), version 3.7, since the 1^st  of   July 2022. Find more information in TIGGE Models.

The last step in 18Z runs in Meteo-France contribution to TIGGE has been changed from +108 to +102 hours since   20 Jun 2022  

The Met Office Global model was upgraded to OS45 with effect from the 12Z cycle on 2022-05-04. Find more information in the Model upgrades page.

The TIGGE portal at CMA should be available now again after a while in  http://tigge.cma.cn/   It should contain in principle  the same data as the TIGGE archive at ECMWF. Currently after some technical issues in the past, the data is still available only for more recent period which should be extended soon to contain more historical data too. 

New version of ECMWF IFS model (cycle 47r3) has been introduced at ECMWF since 6Z run on 2021-10-12. 

Cycle upgrade 47r3 will bring improvements to the assimilation and observations usage and a significantly improved physical basis for moist processes, necessary to facilitate further development of the Integrated Forecasting System (IFS) and future application at convection-permitting resolutions.

More details can be found in TIGGE model upgrades#ECMWF

Yearly statistics have been added to  TIGGE usage statistics .

The ECCC high resolution forecasts interpolated to the ensemble resolution have been added to TIGGE archive starting since the 11^th June 2021 as per the details in the page Models.

The additional period of 9 months of DWD forecasts was back-archived in TIGGE so that it starts now on 1 March 2020. 

New version of ECMWF IFS model (cycle 47r2) has been introduced at ECMWF since 2021-05-11. In the IFS Cycle 47r2 single-precision for ENS (forecast up to day 46 and hindcast) and HRES (forecast) has been introduced. Moreover, the ENS vertical levels has been increased to 137 to bring it in line with HRES. 

This change will not affect the format of TIGGE products from IFS. 

More details can be found in TIGGE model upgrades#ECMWF

JMA global EPS has been upgraded to the version GEPS_2103 since  30 Mar 2021 

The major changes are:

• Increase of the number of vertical layers from 100 to 128
• Increase of the number of ensemble members from 27 to 51
• Revision of the global snow analysis
• Introduction of the global soil moisture analysis

Further details can be found in the page  Models .  

The horizontal resolution of t he ECCC contribution to TIGGE has been increased from 1.0 to 0.25 degree since 12Z 14 Apr 2021 Also the GRIB 2 packing has been changed to simple instead of complex one (that will generally  increase file sizes but also significantly reduce time needed to process such data). All TIGGE data from all participating models should be encoded now using simple GRIB 2 packing.

Further details can be found in the page  Models .  

Meteo-France global prediction system has been upgraded to the version PEARP5  since  08 Jan 2021   The main technical changes related to TIGGE are:

• 4 runs from 0/6/12/18Z instead of 2 from 6/18Z
  • there are different final steps for different runs:
    • 0/12Z: +48H
    • 6Z: +90H
    • 18Z: +108H
• resolution increase to 0.5 degree
• GRIB 2 simple packing instead of JPEG
• tmin/tmax fix

Further details can be found in the page  Models .  

The outputs from the global model ICON produced by Deutscher Wetterdienst (DWD) have been added to TIGGE archive starting from 12Z,  7 December 2020. In contrary to other ensemble systems, in ICON the control forecast is not produced (the ensemble consists of 40 perturbed members only). The high resolution forecast interpolated to the same resolution as the ensemble is also available for users.  Click   here   for more details.

The NCEP global prediction system was upgraded to GEFS v12  since 12Z, 23 Sep 2020. The main technical changes related to TIGGE are:

• increased ensemble size from 21 to 31
• increased horizontal resolution from 1 to 0.5 degree

Find more information in the page Models.

The KMA high resolution forecasts interpolated to the ensemble resolution have been added to TIGGE archive starting since the 5^th November 2020 as per the details in the page Models.

The forecast length of KMA outputs has been extended from 10 to 12 days starting since 21 October 2020 as per model details page.

New model outputs from the Global Ensemble Forecast System (GEFS) produced by India Meteorological Department (IMD) were added to TIGGE archive starting from 1 July 2020. Users can access the data on 0.12° x  0.12° grid (~12 km).  Click  here  for more details.

The ECMWF global prediction system  was upgraded to the version 47r1  since 30 June 2020. Find more information in the Model upgrades page.

The NCMRWF global ensemble prediction system NEPS-G  (origin dems in the TIGGE archive) was upgraded to the version 3  since 11 June 2020. Find more information in the Model upgrades page.

The CMA global ensemble prediction system (origin babj in the TIGGE archive) was upgraded to the version GRAPES_GFS  since 1 June 2020. Find more information in the Model upgrades page.

TIGGE ensemble forecast database for research continues to grow - an article about TIGGE project update and also celebrating BoM resuming their contribution to the archive has been published. 

Bureau of Australia (BoM, TIGGE origin ammc) has resumed their  contribution to the archive after many years. Four runs per day are now available since the 1^st of January 2020.  The data availability can be seen in TIGGE history page. Welcome back BoM! 

We have experienced a hardware incident with a damaged tape volume (J0144200). Users trying to access data described below will get an error message until the problem is resolved.

Affected data:

• type = pf
• levtype = sfc
• ranges: many dates across the whole TIGGE period

The expected data recovery is in 2-4 weeks in case of success. We apologise for any inconvenience.

The UKMO global ensemble prediction system (origin egrr in the TIGGE archive) was upgraded to version PS43  for the 12UTC cycle on 4 December 2019. Find more information in the Model upgrades page.

The results of the 1 ^st  TIGGE user survey have been published . The total number of 383 users answered various questions about their experience with TIGGE products. 

The tropical cyclone track data from ECMWF model has been moved to a new location. Find more information in the page Tools. The new location is accessible also via a quick link in the top right section of the main ECMWF TIGGE page.

Click here for more details.

The CMC global ensemble prediction system (origin cwao in the TIGGE archive) was upgraded to version 5.0.0 on 18 September 2018.

The main changes in this upgrade are:

• The 800x400 global Gaussian grid at 50 km resolution is updated to a Yin-Yang grid at 39 km resolution
•   The model top is raised from 2 hPa to 0.1 hPa.
•  In the ensemble Kalman filter assimilation component, the digital filter initialization is replaced by an incremental analysis update (IAU) procedure. 

Click here for more details.

We have recently experienced a hardware incident with a tape volume becoming damaged. Users trying to access data described below will get an error message until the problem is resolved.

Affected data:

• type = cf
• levtype = pl
• ranges: 2017/06/09 to 2017/06/10,   2017/08/03 to 2017/10/23  and 2018/01/24 to 2018/08/26

The expected data recovery is in 2-4 weeks in case of success. We apologise for any inconvenience.

As of 24 Sep 2018 the access to all previously unavailable data has been restored successfully.

Update of NCMRWF forecast system. A new version of NCMRWF model was introduced. The first archived updated model runs are from the 1^st of July. The main changes are:

• reduced number of the ensemble size from 45  to 12
• two model runs 00 and 12 UTC at very high resolution (0.12x0.18 degree)

Click here for more details.

Update of MetOffice forecast system. A new version of MetOffice model (UM PS39) was introduced. Click here for more details.

Update of MetOffice forecast system. A new version of MetOffice model (UM PS38)  was introduced. Click here for more details.

Update of KMA forecast system. A new version of the KMA model (UM version 8.5) was introduced. The most noticeable change is the increase by 1 ensemble member, from 24 (23+control) to 25 (24+control).

Update of ECMWF forecast system. A new version of ECMWF model (IFS cycle 41r2) was introduced. Click here for more details.

Some problems occurred with the feed for NCEP data, which prevented their ingestion in the TIGGE database from December 2015 . The problems are under investigation and it will be notified once resumed.

From the 06UTC forecast on 21st October 2015, the Met Office tropical cyclone prediction (CXML) data is now based on the higher-resolution MOGREPS-G forecasts. MOGREPS-G is run four times a day (00, 06, 12 and 18Z) using a 12-member ensemble with a grid length of approx 33km. Until now, the CXML data was based on the lower resolution MOGREPS-15 ensemble, even though MOGREPS-G data has been supplied to the TIGGE archive since July 2014. Note that each CXML dataset includes tracks from a lagged ensemble of 24 members, i.e., the current forecast and the forecast from 6 hours earlier. The CXML data are available via the NCAR archive at  http://rda.ucar.edu/datasets/ds330.3/ or see the TIGGE cyclone exchange page at http://www.cawcr.gov.au/research/cyclone-exchange/ for further information.

Please note that information from the TIGGE website is being migrated. This website is no longer being updated. The main TIGGE project page is now at http://www.ecmwf.int/en/research/projects/tigge and further details about TIGGE are available via https://software.ecmwf.int/wiki/display/TIGGE/Home

The Met Office TIGGE data now includes data from the higher resolution, 7-day MOGREPS-G global ensemble (rather than MOGREPS-15, as used up to 00Z 15th July). The new data are being provided in near-real time from 00Z 6th November, and it is planned to back-fill the gap in due course. The new ensemble data includes 12 members run four times a day, with a reduced number of parameters. Click  here for more details.

From Tuesday 15th July, the 15-day MOGREPS-15 EPS data will no longer be sent to TIGGE. It will be replaced by higher resolution MOGREPS-G data, with a 7-day range. There will be a gap in the data provision, but it is planned to back-fill the missing data within a few weeks. The number of TIGGE parameters available from the new MOGREPS-G feed will be significantly reduced. Click here for more details.

A recent review of the NCEP TIGGE data has shown that there were errors in the five time-integrated energy flux fields: outgoing long wave radiation, surface latent heat flux, surface net thermal radiation, top net solar radiation and surface sensible heat flux. The data have been corrected from 9th April 2014, but unfortunately it is not feasible to correct past data. Thanks to NCDC, who post-process twelve of the NCEP TIGGE parameters, for indentifying and correcting the problem. Click here for more details.

A new version of ECMWF model was introduced at ECMWF. Parameter convective inhibition (CIN) has been added to the TIGGE database.

JMA have reported that the current 'Land-sea mask' values in the JMA TIGGE data are incorrect. Although the land-sea mask has not changed, an error in output processing resulted in incorrect land-sea mask data starting from 16 December 2010. Data before that date is correct.

JMA are working to both fix the problem and improve their EPS within a few months, and will make further announcement when the changes have been made.

A representation of model uncertainty was introduced into the medium-range EPS from the Japan Meteorological Agency (JMA) on 17 December 2010. The method uses a stochastic perturbation of the physical tendencies.

The ensemble forecasts from the Australian Bureau of Meteorology's GASP EPS have been terminated from 20th July 2010, and so are no longer being input to the TIGGE data base. A new system, AGREPS (an Australian implementation of the Met Office MOGREPS system) is under development. In due course AGREPS data will be included in TIGGE, but it is anticipated that there could be a gap of a year or more before AGREPS is operational.

We are currently updating this website. We have added more information about TIGGE research and the GIFS-TIGGE working group, and links to several other TIGGE-related websites. Further changes will follow soon - specifically changes to the dynamic web pages (the ones with "/d/" in their URL) to make them consistent with the rest of the website. Richard Swinbank.

The 8th meeting of the THORPEX GIFS-TIGGE Working Group was held at WMO Headquarters, Geneva, 22-24 February 2010

After being processed in test mode, data from Brazilian Centro de Previsao Tempo e Estudos Climaticos (CPTEC) is ingested in the TIGGE database in production mode from 1st February 2008.

After being processed in test mode, data from KMA is ingested in the TIGGE database in production mode from 28th December 2007.

After being processed in test mode, data from Meteo France is ingested in the TIGGE database in production mode from 25th October 2007.

After being processed in test mode, CMC data is ingested in the TIGGE database in production mode from cycle 00Z of 3rd October 2007.

After being processed in test mode, BoM data is ingested in the TIGGE database in production mode from cycle 00Z of 3rd September 2007.

After being processed in test mode, CMA data is ingested in the TIGGE database in production mode from cycle 00Z of 15th May 2007.

A couple of talks from the GIFS-TIGGE 4th meeting were added to our new Working group, conference and workshop database in pdf format. A link to the complete list can be found in the side menu and at the TIGGE front page.

JMA will update the distribution scheme of JMAs EPS data for TIGGE data base on 20 March 2007 from ftp-put by JMA to http-get by ECMWF from our new data distribution server.

Japan Meteorological Agency will add on 20 March 2007 to the TIGGE database:

• surface air maximum and minimum temperature,
• snow depth water equivalent,
• total column water,
• all radiation and flux parameters,
• skin temperature,
• soil moisture.

Furthermore the forecast-step interval of all pressure level parameters and surface pressure was changed from 12 hours to 6 hours. The land-sea mask and orography for control forecast at forecast-step 0 were also added.

After beeing processed in test mode the NCEP data will be archived at ECMWF in production mode from cycle 00Z of 5th March 2007.

UK MetOffice added total column water, soil moisture (with wilting point & field capacity in control run output) and soil temperature to the TIGGE database. Furthermore wind (u and v) was added on potential vorticity level 2 PVU. The Land Sea Mask for control forecast at all timesteps is now also available from the UK MetOffice.

ECMWF implements Variable Resolution Ensemble Prediction System and extends the forecast range from 10 days to 15 days. The forecast consists of two legs: leg 1 goes from day 0 to day 10 and is followed by leg 2 going up to day 15. The Atmospheric Model runs at resolution T399 (62 vertical levels) or N200 for leg 1. Leg 2 runs at resolution T255 (62 vertical levels) or N128. This change is carried over to the TIGGE Database.

Started production version of the TIGGE database. It contains output from the European Centre for Medium-Range Weather Forecasts, the Japan Meteorological Agency and the UK MetOffice.