Exploratory High-Resolution Climate Simulations using the Community Atmosphere Model (CAM)

Description of the NCAR Community Atmosphere Model ( CAM 4 . 0 )

Efficient Parallel I/O in Community Atmosphere Model (CAM)

2 Abstract Century-long global climate simulations at high resolutions generate large amounts of data in a parallel architecture. Currently, Community Atmosphere Model (CAM), the atmospheric component of the NCAR Community Climate System Model (CCSM), uses sequential I/O which causes a serious bottleneck for these simulations. We describe the parallel I/O development of CAM in this paper. The p...

The Specified Chemistry Whole Atmosphere Community Climate Model (SCWACCM)

We here present, document and validate a new atmospheric component of the Community Earth System Model (CESM1): the Specified Chemistry Whole Atmosphere Community Climate Model (SC-WACCM). As the name implies, SC-WACCM is a middle atmosphere-resolving model with prescribed, rather than interactive chemistry. Ozone concentrations are specified throughout the atmosphere, using zonal and monthly m...

Climate Implications of the Messinian Salinity Crisis using the NCAR Community Atmosphere Model (CAM3.1)

The Messinian Salinity Crisis (MSC) occurred nearly 6 million years ago when the Mediterranean Sea (MS) was isolated from the Atlantic Ocean. High rates of evaporation and diminishing water input led to a 1500 -2500 m drop in MS level. In this study, four 20-year simulations are run using the NCAR CAM3 configured with the SOM. Two of the simulations are designed to represent specific events tha...

The Evolution of Climate Sensitivity and Climate Feedbacks in the Community Atmosphere Model

The major evolution of the National Center for Atmospheric Research Community Atmosphere Model (CAM) is used to diagnose climate feedbacks, understand how climate feedbacks change with different physical parameterizations, and identify the processes and regions that determine climate sensitivity. In the evolution of CAM from version 4 to version 5, the water vapor, temperature, surface albedo, ...