The first day of the meeting consisted of a series of presentations by working group members using CCSM (or closely related models) to study the climate. These studies could be loosely categorized into three topics: the effects of sea ice on constituents of the global climate, fresh water fluxes in the ocean, and Arctic clouds. All presentations dealt primarily with the Northern Hemisphere. The...

GMPP Activities Highlighted in this Issue GPCI analyzes weather and climate models along a cross section of the Pacific Ocean. Histograms of total cloud cover versus latitude along the GPCI cross section for June–July–August 1998 from the UKMO/HadGAM model, ISCCP and the NCAR/CAM3 model. These show that some climate models (e.g., UKMO/HadGAM) exhibit a quasi-bimodal structure with cloud cover b...

For research data repositories, web interfaces are usually the primary, if not only, method that users have to interact with repository systems. Data often search, discover, understand, access, and sometimes use directly through interfaces. Given sub-par user can reduce ability of locate, obtain, data, it is important consider how repositories’ be evaluated improved in order ensure useful suc...

The mission of the Geophysical Statistics Project (GSP) is to encourage the application of statistical analysis and the development of new statistical methods in the geophysical sciences. To fulfill this goal, GSP must also be engaged in basic statistical research including mathematical statistics and probability theory. During this period as part of the NCAR reorganization, GSP administration ...

Abstract NASA Precipitation Measurement Mission observations are used to evaluate the diurnal cycle of precipitation from three CMIP6 models (NCAR-CESM2, CNRM-CM6.1, CNRM-ESM2.1) and ERA5 reanalysis. NASA’s global-gridded IMERG product, which combines spaceborne microwave radiometer, infrared sensor, ground-based gauge measurements, provides high-spatiotemporal-resolution (0.1° half-hourly) est...

We used a land surface model constrained using data from flux tower sites, to analyze the biases in ecosystem energy and water fluxes arising due to the use of meteorological reanalysis datasets. Following site-level model calibration encompassing major vegetation types from the tropics to the northern high-latitudes, we repeated the site and global simulations using two reanalysis datasets: th...