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