An Update on COLA’s Software Development Jennifer M. Adams and Brian Doty.

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Presentation transcript:

An Update on COLA’s Software Development Jennifer M. Adams and Brian Doty

Software Components GrADS An interactive tool for geoscience data analysis and visualization GrADS Data Server (GDS) An OPeNDAP server that provides remote data access, subsetting, and server-side analysis Greta A web-based searchable catalogue for all of IGES’s data holdings

GrADS Release Highlights Major changes to the core of GrADS: Added 5 th dimension for ensembles Internal data handling in double precision New GDS Release: Ensemble data via OPeNDAP GDS can serve all GrADS-readable data set GrADS is a client for all GDS data sets New Analysis capabilities: Slice diagonally through ensembles

GrADS Release Highlights (cont’d) Added interfaces for reading new data formats: GRIB 2 HDF 5 Compressed NetCDF-4 Shapefile New options for creating output in various formats: NetCDF (classic and compressed) GeoTIFF KML

Other Noteworthy Accomplishments GrADS team received funding from NASA’s Applied Information Systems Research Program (AISRP) COLA assumed management of GrADS users forum THORPEX Interactive Grand Global Ensemble (TIGGE) forecast data are behind GDS at NCAR GrADS team partnered with NOAA Climate Prediction Center to develop products for GIS applications

Diagonal Slicing Through a Set of Lag Ensembles

GrADS Display of Cloud Fraction (AURA L2G in HDF5 format)

GrADS Plot of GFS Precipitation Data Displayed in Google Earth

GrADS Integrates GIS and Gridded Data Formats Palmer Drought Severity Index in U.S. Climate Zones with 500mb Height Anomalies, July 1993

GrADS Integrates Gridded and GIS Data Formats Gridded Radar Observations during Snowmageddon, 12 Z 6 Feb 2010 with Roads and State and County Boundaries WSR-88D Base Reflectivity [dBZ]

In Support of High Resolution Climate Modeling Data volume reduction using NetCDF-4 compression: 6.4 : 1 (84%) soil moisture 3.7 : 1 (73%) precipitation 1.5 : 1 (33%) u-wind Improved I/O performance: Calculate a time series of zonal means 50 Mb grid, 12 time steps 26 seconds (netCDF-4) vs minutes (binary) Handling of Very Large GRIB Files 47-year IFS AMIP and Time Slice Runs Visualization Image generation shortcuts, animation techniques