The Empirical Statistical Downscaling White Paper, ESD White Paper, is now published!

The Empirical Statistical Downscaling White Paper, ESD White Paper, is now published! This version of the ESD White Paper focuses on empirical statistical downscaling strategies and identify specific challenges within ESD.

Last year the CORDEX Science Advisory Team (SAT) published the first CORDEX White Paper which primarily focuses on dynamical downscaling and its scientific challenges.

These two White papers will be followed by a third on bridging climate science with society needs. Those papers will form the basis for the CORDEX Science Plan.

CORDEX workshop for thirteen African countries

The CORDEX office at SMHI, the National Institute of Meteorology in Mozambique, the Norwegian Meteorological Institute, the University of Cape Town in South Africa and the University of Yaounde in Cameroon jointly organized a workshop that gathered thirty participants from thirteen countries. The purpose was extended collaboration and to discuss the most pressing issues and gaps in climate information in order to enable well informed decisions for Africa.

In December 2021 the international CORDEX office at SMHI in cooperation with colleagues from Mozambique, South Africa and Cameroon held a workshop for thirty participants from thirteen African countries. The aims were to create more collaboration within the CORDEX community over Africa, enlarge existing networks and identify priorities for research activities and further actions.

Improving local and regional skills

There is a great need for robust climate information to be able to make well informed decisions. The question is how to define what is robust and what is most pressing? It really comes down to how to produce better and more usable information to assess the impact on various sectors. There might also be a need for a stocktake on local and regional skills, including infrastructure for future capacity planning.

Many of the participants have earlier been involved in workshops, training or CORDEX projects. Some years ago, some of the organizers of this workshop initiated teams for different parts of Africa not only to create networks and exchange but also to build local and regional capacity and knowledge. The overall aim is to expand and further develop these teams and to support exchange between projects and across regions to produce or use climate information.

Discussions on urgent climate challenges

This workshop highlighed discussions on focus areas to improve what has already been done and to develop new information, and to continue the analysis of differences in impact between 1.5 and 2 degrees global warming.

  • What are the consequences locally and regionally in Africa and what do the latest climate scenarios show?
  • What are the trends for extreme rains or drought? When and where will they occur, how long will they last, has seasonal rainfall or the dry spells shifted in onset and duration and what triggers them?
  • How do extreme rains and flooding affect infrastructure, especially in the dry season?
  • How do processes at different scales influence each other, like how the really large scale processes are reflected in local or regional events?
  • How are heat waves related to health issues?
  • How do heat waves affect agriculture and suitability of crops in West Africa or hydropower potential in Congo?
  • How do we work with disaster risk monitoring in order to move towards disaster risk management?
  • What degree of detail is needed for actionable information for different impact sectors – is there a threshold spatial scale?

Impact-based predictions

Impact-based predictions might be one of the ways to adress some of the above questions.  There were discussions on what models and resolutions to use for various applications, technicalities in models. Other issues were how to best explain and demonstrate the delicate matter that a model result can be robust and yet it is impossible to give one single exact number – how well the models simulate reality and what the uncertainties of the results are. Since computer and personnel resources are limited there is always a compromise to be done, for instance on what models, variables and methods to choose for evaluation and analysis.

As scientific papers are very important in the scientific world there was also a discussion about what kind of papers could be a result.

How to engage with stakeholders

The communication aspect is important: What stakeholders to engage with, what platforms to use in order to keep contact with these communities, what way to talk to them and how to look at the broadscale impacts versus the regional and sector specific questions.

One example of tools is the Climate Adaptation Game that is developed by SMHI. In this game various scenarios can be explored while working with narratives, i.e. putting the impacts into perspective. Another exemple of tools is the HYPEWeb for exploring hydrological predictions 

CORDEX-MAIRS-FE “Climate Change Downscaling Simulations and Regional Research Applications in Asia” workshop

In December 2021, CORDEX, MAIRS-FE and Future Earth joined forces to organize a workshop on “Climate Change Downscaling Simulations and Regional Research Applications in Asia”.

The workshop focused on outlining ideas for applications to develop the framework for cooperation and networking. This includes setting up overarching topics for collaboration, capacity developing activities and exploring opportunities for a pilot study to demonstrate the benefits and use of such a framework and network.

The COordinated Regional climate Downscaling EXperiment (CORDEX) – a key scientific pillar in the new core project Regional Information for Society, RIfS, under the World Climate Research Programme, WCRP) and Monsoon Asia Integrated Research for Sustainability-Future Earth (MAIRS-FE) serve as platforms and facilitators for coordination and cooperation to foster understanding, knowledge transfer, involvment of stakeholders and capacity development through research, training, conferences and cooperation initiatives.

Exchange of scientific research progress

Nearly fifty scientists, scholars and other representatives from almost twenty universities and international research institutes around the world exchanged scientific research progress and outcomes and explored cooperation directions on climate, air, and health issues.

Recent research findings and global updates in the field of integrated air-climate-health research and many other relevant fields were shared. The figure below shows the global percentage of casualties for various health conditions attributed to air pollution in 2019.

Also, representatives of international research institutions introduced their research plans and cooperation intentions to explore opportunities for cooperation in the future, including Prof. Zhangcai Qin from the FE Global Secretariat (China), Dr. Giles Sioen and Dr. Ria Lambino from the FE Global Secretariat (Japan), Dr. Iréne Lake and Dr. Ralf Doescher from the CORDEX International Project Office, Prof. Ailikun from Alliance of International Science Organizations (ANSO), Dr. Charlie Navanugraha from the Center of Excellence for Soil Research in Asia (CESRA), and Dr. Linda Stevenson from the Asia-Pacific Network for Global Change Research (APN).

The intention was to include and to get to know more institutions and international research projects, to discover common research areas, and to explore cooperation directions.

Constructing a cooperative research network

Delegates and experts discussed future possibilities within their research fields and research plans, and reached a consensus on the joint construction of a cooperative research network. This international workshop is one of our activities to promote interdisciplinary dialogue and international academic exchanges as well as the active exploration of long-term cooperative relations between multiple institutions and multiple global research projects.

CORDEX-CMIP6 Atmosphere Variable List

The Second Order Draft (SOD) of the CORDEX-CMIP6 Atmosphere Variable List (VL) was shared with the CORDEX community in January 2022. We are very grateful to all who have read the SOD in detail and provided comments. The final version of the CORDEX-CMIP6 Atmosphere Variable List is ready and we share it with the CORDEX community.

All together we received about 40 comments on the SOD and the first priority has been given to topics with a number of similar comments. We tried to find a balance between requests for providing more variables at higher subdaily frequencies and requests for reducing output size by archiving a number of variables at lower subdaily frequencies. The CORDEX-CMIP6 Atmosphere Variable List has a lot of flexibility to select output variables and their output frequencies to accommodate capacities of different RCM groups.

A tutorial to the CORDEX-CMIP6 Data Request describing how to select output variables and their output intervals and how to archive a number of specific variables is also provided.

To the web page Data request.

EURO-CORDEX General Assembly 2022

24-27 of January 2022 does EURO-CORDEX organize its annual General Assembly. On the agenda there are decision of the EURO-CORDEX simulation protocol and scientific presentations.

Read more about EURO-CORDEX:

Merry Christmas and a Happy New Year


The CORDEX office will be unmanned during the holidays and the ipoc mail only sporadically read.

We are back in office 10 January and for now wish you all Happy Holidays!

Iréne, Anna, EvaMarie