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 fromUnified 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.