# Presentation: 270516

## Data Requirements for Climate and Carbon Research 

- John Drake, Climate Dynamics Group
- Computer Science and Mathematics Division
- http://www.scidac.org/CCSM

## SciDAC: Collaborative Design and Development of the Community Climate System Model 

- DOE, NSF, NASA-DAO Collaborative Effort
- Coordination – Malone(LANL), Drake(ORNL), Kiehl(NCAR)
- Coupler – Bettge (NCAR), Larson (ANL)
- Community Atmospheric Model – Williamson(NCAR), Drake(ORNL), Lin(NASA), Mirin(LLNL)
- POP Ocean Model – Malone(LANL), Gent(NCAR)
- Chemistry and Biogeochemistry – Rotman(LLNL), Erickson(ORNL)
- Ice model – Hunke(LANL)
- Common Land Model – Bonan (NCAR)
- Software Coordination – Craig (NCAR)
- Performance Evaulation – Bailey(LBNL), Worley (ORNL)
- Grids and Frameworks:
- SciDAC/Earth System Grid – Williams(PCMDI),
- NASA HPC/ Earth System Modeling Framework
- Other SciDAC projects and the Integrated Software Infrastructure Centers

**Sponsored by DOE/OASCR and OBER as well as NSF and NASA**

## Global Climate Change Analysis

## Courtesy Warren Washington

**Courtesy Warren Washington**

## Climate Science Enabled

***Science***** **13April 2001: “Detection of Anthropogenic Climate Change in the Worlds Oceans,” Barnett, Pierce, Schnur

**Method:**  Ensemble simulations of the DOE Parallel Climate Model (PCM)

**Results:**
- Detection of Anthropogenic Climate Change in the Worlds Oceans
- Ensembles establish 95% confidence intervals of model predictions
- Simulated ocean heat storage matches historical record of rising ocean temperatures

**Enabling Technology:**
- Parallel Climate Model developed in collaborative effort lead by Warren Washington (NCAR)
- Terascale computing resources

**Firsts:**
-  Ensemble study with US model and computers
-  Coupled model reproducing ocean response
-  Establishing new level of US model quality

## Teams Using Multiple Centers

- DOE Supports Analysis and Archiving of Climate Data at PCMDI.

**NASA**
** ****DAO**

**PCMDI**

**NCAR**

**GFDL**

**LANL**

**ORNL-CCS**

**LANL**

**NERSC**

**NCDC**

## Diagonstic Analysis of Coupled Models

**Courtesy PCMDI**

**Courtesy CCSM/AMWG**

## Tools

## Climate Scientific Directions

- 			   	 **2000/2001    ****   **** ****	****	****2006/2007**
- _Global Model__s_ 	             Current 			             Estimates
- Configurations:
- 		**Atmosphere** 	   **230km****L18****	****	****              ****3****0****km/L60(75x)**
**	****	****Ocean                  100kmL40****	****	**** ****	**** 10km/L40(25x)**
- Model years/day	          **5****	****	****   ****	****              100(20x)**
- Sustained(Gflops)                  **6.4****                 ****         ****	****              9600**** (1500x)**
**Storage (TB/century)             1                                           100**

**At current scientific complexity a century/day at 2006 configurations requires a sustained capability of  10Tflops for a single case**

## Slide 10

## Challenges

- Integration with existing tools
- Extension of existing tools for multiple component climate system models
- Speed of transfers
- Parallelism: I/O(NetCDF) and analysis
- Metadata and Grid databases
- Analysis of ensembles
- Advanced statistical methods for analysis of coupled systems.