Presentation is loading. Please wait.

Presentation is loading. Please wait.

An Update on GrADS Brian Doty and Jennifer Adams.

Similar presentations


Presentation on theme: "An Update on GrADS Brian Doty and Jennifer Adams."— Presentation transcript:

1 An Update on GrADS Brian Doty and Jennifer Adams

2 GrADS Capabilities GrADS is an interactive tool for the analysis and visualization of geoscience data Open source and freely available GrADS has 2 data models 5-D gridded data In situ (station data GrADS can read all the standard data formats Binary BUFR GRIB (versions 1 and 2) HDF (versions 4 and 5) NetCDF (versions 3 and 4) Missing data handled consistently throughout Expression syntax is flexible, compact, recursive Programmable interface for scripting Fast I/O and graphics

3 Years of GrADS First code written Name chosen; First release Scripting language added Rapid community adoption BAMS CD-ROM distribution 1995 AMS Special Award GDS; OPeNDAP integration Version 2 alpha Begin version 2 development 2000 Survived Y2K User forum started released

4 GrADS is Used Worldwide 77,500 downloads February Present

5 COLA How does COLA benefit from GrADS? Format neutralization facilitates COLA’s ”model agnostic” strategy Collaboration expedited by script-sharing Easy, format-independent metadata harvesting for COLA’s data management strategic plan In-house expertise for immediate help and code changes o new and complex data sets o very high resolution data o optimization of scripts o beautification of published figures How does GrADS benefit from COLA? Feedback from scientists (deliberate and accidental) Development needs are readily apparent Pre-release testing of new features

6 Easy Multi-Model Intercomparison Error in July Mean Total Precipitation (in meters) ECMWF IFS - TRMM NOAA CFSv2 - TRMMNCAR CCSM4 - TRMM Japan NICAM - TRMM

7 COLA How does COLA benefit from GrADS? Format neutralization facilitates COLA’s ”model agnostic” strategy Collaboration expedited by script-sharing Easy, format-independent metadata harvesting for COLA’s data management strategic plan In-house expertise for immediate help and code changes o new and complex data sets o very high resolution data o optimization of scripts o beautification of published figures How does GrADS benefit from COLA? Feedback from scientists (deliberate and accidental) Development needs are readily apparent Pre-release testing of new features

8 GrADS Highlights Major changes to the core of GrADS: Added 5 th data dimension (targeted to ensembles) Internal data handling in double precision More consistent missing data handling Very stable: bugs fixed, memory leaks patched New data formats GRIB2 HDF5 NetCDF4 o Early adopter of compression features GIS Interface Read shapefiles Output shapefiles, GeoTIFF, and KML

9 The New Shaded Contouring Algorithm

10 Station Data Shapefile from GrADS in ArcMap (Dressed up with Topography, Political Boundaries, and City Names)

11 OLR and Precip Data from GrADS in Google Earth 05Z 23May2009

12 An interactive, web-based system to display CPC products together with supplemental geographical data Climate Prediction Center’s GIS Portal

13 What’s Next New options for rendering the graphics Use of Cairo library for X11, image, and hardcopy drawing Old methods still available Design of new data analysis capabilities EOFs, Sorting, etc. Internal/External operations on defined objects (defop)

14

15 COLA has considerable expertise and experience in remote data analysis o Pioneered server-side analysis with GDS o Currently managing off-site computing at 3 remote centers Will mobile cloud-based computing change how we do our science work? GrADS in the Cloud Live Poster Session Experimental prototype of GrADS running as a "cloud" service Using GrADS in the new cloud computing paradigm


Download ppt "An Update on GrADS Brian Doty and Jennifer Adams."

Similar presentations


Ads by Google