News

In early 2025, a major data loss at DKRZ significantly impacted the availability of CORDEX-CMIP5 data through the ESGF, as many datasets—without existing replicas—were stored exclusively at that node. Despite the hard work to recover as many data sets as possible, the loss still affects approximately 20,000 datasets (over 200 TB), spanning multiple CORDEX domains, variables, and output frequencies. A full list of the missing datasets can be found here.
All CORDEX users are encouraged to check their local CORDEX-CMIP5 data archives (downloaded from ESGF) to help mitigate the impact of this data loss. A simple script is available in the esgf-data-loss/ directory to assist in identifying whether your system contains any of the missing data.

bash locate_available_data.sh /path/to/your/CORDEX/data/following/ESGF/directory/structure

If you discover that you hold any of the affected datasets, please open an issue in this repository or contact: datasupport@cordex.org.
Some of the most commonly used variables from the CORDEX-CMIP5 archive remain accessible via the Copernicus Climate Data Store (Diez-Sierra et al. 2024).

The CORDEX Task Force on CMIP7 has prepared a survey to collect information about plans from modelling groups:

Survey on potential commitments for CORDEX-CMIP7 in time for AR7

The CORDEX Task Force (TF) on Preparation of CORDEX-CMIP7 is preparing the way to downscale the upcoming CMIP cycle, starting with the CMIP7 Fast Track, which will respond to the needs of the IPCC 7th Assessment Report (AR7). In this respect, the TF would benefit from prior knowledge of existing national or institutional commitments to downscale the CMIP7 Fast Track in time for AR7 or other assessments/adaptation plans in the short term. This brief survey collects key information to assist the TF work.

Please find the survey here: https://forms.gle/ancgPtUaytwBkYS5A

The deadline for answering is extended until end of May.

CORDEX together with ESMO and RIfS are organising a Townhall with panel discussions and questions on Innovative Approaches to Observations and Modelling for Improved Climate Information and Services at EGU on Monday 28 April 19.00-20.00 CEST. Read more about the townhall here.

The same day there is also the session Regional Climate Modelling, including CORDEX at 14:00-17.55 CEST with both oral presentations and posters. You can find more information about this session here.

There are also CORDEX presentations in other sessions so check out the full EGU25 programme.

The workshop “Building Actionable Climate Information for Africa Adaptation” is a joint event together with RIfS that will take place in Cape Town, South Africa on 8-11 September, 2025. This workshop is for invited only. It is planned as a pivotal moment in Africa for how to address the critical questions of robust, defensible, and actionable climate information to support Africa’s policy and decision makers. This workshop is the first step to new cross-disciplinary, trans-disciplinary, and cross regional collaborations.

For more information click here

Attendees are from Mozambique, South Africa, Zimbabwe, Tanzania, Kenya and Burundi, including students and lecturers from Universidade Eduardo Mondlane.

The workshop facilitates hands-on work to develop empirical-statistical downscaling for southeast Africa and training in R/R-studio and includes:

• Lectures on downscaling techniques;

• Data processing (ERA5 reanalysis and CMIP6 simulations);

• Training in empirical-statistical downscaling (ESD) skills and learning how to utilize them to downscale future climate projections for their respective countries;

• Opportunities to sharpen skills in R and EDS techniques;

• Writing process that contributes to a scientific paper on downscaling and future regional climate projections.

Read more about the ongoing workshop here