The Implementation of WCRP

WCRP is organized as a network of core and co-sponsored projects, working groups and cross-cutting initiatives. The current core projects of WCRP are:

Climate and Cryosphere (CliC): The principal goal of CliC is to assess and quantify the impacts of climatic variability and change on components of the cryosphere and their consequences for the climate system, and to determine the stability of the global cryosphere.
Climate Variability and Predictability (CLIVAR): CLIVAR’s mission is to observe, simulate, and predict the Earth’s climate system with a focus on ocean-atmosphere interactions in order to better understand climate variability, predictability and change.
Global Energy and Water Cycle Experiment (GEWEX): GEWEX focuses on the atmospheric and thermodynamic processes that determine the global and regional hydrological cycle, radiation and energy transitions and their involvement in global changes such as increases in greenhouse gases.
Stratospheric Processes And their Role in Climate (SPARC): SPARC has as its principal focus research on the significant role played by stratospheric processes in the Earth’s climate, with a particular emphasis on the interaction between chemistry and climate.


The activities in support of WCRP Integrating themes are carried out by ad hoc working groups:


- Working Group on Coupled Modelling (WGCM), coordinating WCRP modelling activities and organizing numerical experimentation for the IPCC assessments

- Working Group on Seasonal to Interannual Prediction (WGSIP), developing a program of numerical experimentation for seasonal-to-interannual variability and predictability

- Working Group on Numerical Experimentation (WGNE), fostering the development of atmospheric circulation models for use in weather, climate, water and environmental prediction on all time scales

- WCRP Modelling Advisory Council (WMAC), coordinating high-level aspects of modeling across the WCRP, ensuring cooperation with main WCRP partners such as IGBP and WWRP

- WCRP Data Advisory Council (WDAC), acting as a single entry point for all WCRP data, information, and observation activities and coordinating their high-level aspects across the WCRP, ensuring cooperation with main WCRP partners such as GCOS and other observing programmes.


WCRP engages the international climate research community in a number of cross-cutting initiatives through the implementation of task forces and working groups in areas such as:

- Anthropogenic Climate Change (ACC), including Regional Climate Downscaling (WGRC)

- Seasonal Climate Prediction

- Decadal Variability, Predictability and Prediction

- Sea-Level Variability and Change

- Climate Extremes

- Atmospheric Chemistry and Dynamics (AC&C)

- Monsoon and Climate





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