Co-ordinated Regional Downscaling Experiment
(CORDEX) - South Asia data system
Milind Mujumdar and Sandip Ingle
mujum@tropmet.res.in
Centre for Climate Change Research (CCCR),
Indian Institute of Tropical Meteorology (IITM), Pune.
http://www.tropmet.res.in
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Assessment of impacts of regional climate change
High resolution dynamic downscaling
of the South Asian monsoon
• Quantify and reduce uncertainties
in regional climate projections
• Dynamic downscaling based on
multiple
model
ensemble
simulations
Domain: South and West Asia
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IITM’s role in CORDEX-SA program
• Generation of High resolution downscaled data.
• Analysis and assessment of CORDEX-SA model projections
• Co-ordinate data distribution, archival and hosting of data at CCCR-IITM in
standard format.
• Provide tools that help stakeholders to download data, and generate products
that are easy-to-create and understand.
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CORDEX simulations at IITM
• CORDEX South Asia RCM runs on IITM HPC
• LMDz: evaluation- 20 years; historical- 110 years; future scenario- 95 years
• RegCM4: evaluation-20 years; historical- 110 years; future scenario-56 years
• CORDEX South Asia RCM runs from partners
• SMHI-RCA4: evaluation- 20 years; historical- 110 years; future scenario- 95 years
• COSMO-CLM: historical- 110 years; future scenario-95 years
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Efforts for Integrating and delivering scientific data
products to the CORDEX-South Asia community
• Archived evaluation runs (IITM-LMDz, IITM-RegCM4) in CORDEX specified format
• The Integrated Rule-Oriented Data System (iRODS) application is developed with
partnership between the Data Intensive Cyber Environnements (DICE) Group and
the iRODS Consortium.
• iRODS is implemented in the CCCR for managing and sharing CCCR-hosted model
outputs data products
• Few selected monthly & daily variables are being released by end of September
2013.
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Implementation of the Analysis & Evaluation Tools in Data Portal
• Live Access Server (LAS) for online analysis of observations & model data
• The Regional Climate Model Evaluation System (RCMES) developed by NASA Jet
Propulsion Laboratory (JPL) & UCLA is adopted as an evaluation tool for CORDEX
South Asia
• RCMES will help make satellite observations, in conjunction with in-situ,
assimilated, and reanalysis datasets, more readily accessible to the regional
climate modeling community
• The system includes a central database (Regional Climate Model Evaluation
Database: RCMED) to store multiple datasets in a common format and codes for
calculating predefined statistical metrics to assess model performance (Regional
Climate Model Evaluation Tool: RCMET)
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CORDEX-South Asia Multi-Model Output Historical (1950 – 2005)
Space required for each variable is approx. 4 GB (To be available by end of September 2013)
Variable name
(Monthly and Daily)
SMHI-RCA4
RegCM4-GFDL
RegCM4-LMDZ
COSMO-CLM
LMDZ
Rainfall (pr)
Y
Y
Y
Y
Y
Surface Air Temperature
(tas)
Y
Y
Y
Y
Y
Surface Air Temp. Maximum
(tasmax)
Y
Y
Y
Y
Y
Surface Air Temp. Minimum
(tasmin)
Y
Y
Y
Y
Y
Sea-level Pressure (psl)
Y
Y
Y
Y
Y
Surface Specific Humidity
(huss)
Y
Y
Y
Y
Y
Surface Zonal Wind (uas)
Y
Y
Y
Y
Y
Surface Meridional Wind
(vas)
Y
Y
Y
Y
Y
Downward Shortwave
Radiation (rsds)
Y
Y
Y
Y
Y
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CORDEX-South Asia Multi-Model Output Evaluation Run (1989 – 2008)
Space required for each variable is approx. 512 MB (To be available by end of September 2013)
Variable name
(Monthly and Daily)
SMHI-RCA4
RegCM4-GFDL
RegCM4-LMDZ
COSMO-CLM
LMDZ
Rainfall (pr)
Y
Y
Y
Y
Y
Surface Air Temperature
(tas)
Y
Y
Y
Y
Y
Surface Air Temp.
Maximum (tasmax)
Y
Y
Y
Y
Y
Surface Air Temp.
Minimum (tasmin)
Y
Y
Y
Y
Y
Sea-level Pressure (PSL)
Y
Y
Y
Y
Y
Surface Specific Humidity
(huss)
Y
Y
Y
Y
Y
Surface Zonal Wind (uas)
Y
Y
Y
Y
Y
Surface Meridional Wind
(vas)
Y
Y
Y
Y
Y
Downward Shortwave
Radiation (rsds)
Y
Y
Y
Y
Y
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CORDEX-South Asia Multi-Model Output RCP4.5 scenario (2006- 2100)
Space required for each variable is approx. 1.5 GB (To be available by end of 2013)
Variable name
(Monthly and Daily)
SMHI-RCA4
RegCM4-GFDL
RegCM4LMDZ
COSMO-CLM
LMDZ
Rainfall (pr)
Y
Y
Y
Y
Y
Surface Air Temperature
(tas)
Y
Y
Y
Y
Y
Surface Air Temp. Maximum
(tasmax)
Y
Y
Y
Y
Y
Surface Air Temp. Minimum
(tasmin)
Y
Y
Y
Y
Y
Sea-level Pressure (PSL)
Y
Y
Y
Y
Y
Surface Specific Humidity
(huss)
Y
Y
Y
Y
Y
Surface Zonal Wind (uas)
Y
Y
Y
Y
Y
Surface Meridional Wind
(vas)
Y
Y
Y
Y
Y
Downward Shortwave
Radiation (rsds)
Y
Y
Y
Y
Y
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iRODS based Climate Simulation Data Management
in CCCR Climate Data Portal
Data management and sharing CCCR-hosted model outputs data products that are planned
to be published by end of September 2013.
Current status
Phase I: in-house Policy based data management and sharing – Completed
Phase II: on-site CORDEX policy based data sharing – Tested
Phase III: Data grid- CORDEX data publishing – September 2013
WCRP CORDEX South Asia Training Workshop
The objective of the workshops
Evaluation of regional climate downscaling products and assessment of regional climate
change projections with the uncertainties involved in it over South Asia. In addition to the
modeling and simulation diagnostics, the judgment of local / regional experts from Asian
region will provide relevant and reliable regional climate change information for
Vulnerability, Impact and Adaptation (VIA) studies vital for climate services.
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Overview of CCCR Data Server
HP Proliant DL380 G7 Server
Processor: 2 x Xenon X5670
Speed: 2.93 GHz, RAM 128 Gb, 4.5 TB SAS Disk
Storage Capacity: 24 Tb x 5 (120 TB) with RAID6
OS: Red Hat Linux Enterprise (RHEL)
Data analyses & visualization: LAS-v8
Data archival & management: iRODs-v3.2
Internet Band width: 100 Mb/s
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CCCR web portal link
Sandip Ingle, T. P. Sabin, J. Revadekar and Milind Mujumdar
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