CORDEX South Asia Data

Data Downloads

List of the 17 CORDEX South Asia RCM outputs available on ESGF (View Doc File)

Dataset and Methods

File Format and Data Access

The CORDEX Archive Design document (Cordex Archive Specifications) specifies technical aspects of CORDEX archive file and data formats, as well as archive content. The data is published on the Earth System Grid Federation (ESGF) data nodes by the contributing CORDEX modeling centers after checking for their compliance with the specifications outlined in the archive design document using the tools available for automated quality assurance. The ESGF maintains a global system of federated data centers that allow access to the largest archive of climate data world-wide. Data files comply with the NetCDF format, version 4 compressed with zlib deflation, using the NetCDF 4 classic data model. The CF convention 1.4 is followed.

CCCR-IITM is the nodal agency for coordinating the CORDEX modeling activity in South Asia https://www.wcrp-climate.org/wcrp-regional-activities/ra-asia. The CCCR-IITM and several international partner institutions have contributed towards generation and evaluation of regional climate simulations for CORDEX South Asia. Table 1 lists the details of the 17 CORDEX South Asia RCM outputs available on ESGF. This dataset includes the ensemble of high resolution (50 km) downscaled projections of regional climate and monsoon over South Asia until 2100 generated by CCCR-IITM using the RegCM4 RCM developed and maintained by ICTP (Giorgi et al. 2012). The CORDEX South Asia output from this IITM-RegCM4 RCM are archived and published on the CCCR-IITM ESGF data node for dissemination to users. The list of CORDEX South Asia (domain WAS-44, WAS-44i) multi-model output variables available for download from ESGF and the details for data access are provided on the webpage: DATA Access

Additionally, the raw CORDEX South Asia RCM outputs shared by the modeling partners, which do not strictly conform to the CORDEX archive design specifications, are archived and published on the CCCR-IITM climate data portal designed to facilitate the dissemination of climate information using a publicly accessible on thredds server. Table 2 lists the details of the RCM outputs available on this CORDEX South Asia regional data bank. The details of the few selected CORDEX South Asia multi-model output variables available for download are provided on the webpage: CCCR-IITM ESGF Thredds Server

Acknowledgment

For publications that use the CORDEX South Asia model outputs, an appropriate credit as mentioned in the (Cordex Terms of Use), must be given to the data providers by an acknowledgement similar to the following: “The World Climate Research Programme's Working Group on Regional Climate, and the Working Group on Coupled Modelling, former coordinating body of CORDEX and responsible panel for CMIP5 are gratefully acknowledged. The climate modeling groups (listed in Table 1 and Table 2) are sincerely thanked for producing and making available their model output. The authors thank the Earth System Grid Federation (ESGF) infrastructure and the Climate Data Portal hosted at the Centre for Climate Change Research (CCCR), Indian Institute of Tropical Meteorology (IITM) for providing CORDEX South Asia data.”