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Annette Schloss Institute for the Study of Earth, Oceans and Space

Connecting large data bases to users through open-source, web-based tools Part I. Annette Schloss Institute for the Study of Earth, Oceans and Space. Our goals: To broaden the user base of large, scientific data sets and improve our own access to data and analysis tools. MODIS. IKONOS.

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Annette Schloss Institute for the Study of Earth, Oceans and Space

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  1. Connecting large data bases to users through open-source, web-based tools Part I Annette Schloss Institute for the Study of Earth, Oceans and Space

  2. Our goals: To broaden the user base of large, scientific data sets and improve our own access to data and analysis tools MODIS IKONOS

  3. Goals for IPCC Data Access data information

  4. Methods - good, bad, and ugly! data • Aggregate data in time and space • Create customized products • Embed information in pictures Aggregate data in time and space information

  5. Climate Impacts from the NCAR Community Climate Model Model Runs 20C simulation 100+yr scenarios Annual & decadal map products Regional trends & time-lines 5 ensembles 3-hourly 6-hourly daily monthly Data reduction for the NCAR IPCC climate runs

  6. Methods - good, bad, and ugly! data • Aggregate data in time and space • Create customized products • Embed information in pictures Create customized products information

  7. http://eos-webster.sr.unh.edu Since 1999

  8. Data selection and subsetting tools - spatial

  9. Data selection and subsetting tools - temporal

  10. Data selection tools - browse and select output format

  11. Geotiff Example • 1.4 degree grid • One+ time-steps (1 shown) • Only grids that overlay France Data reduction and reformatting

  12. Next Steps: Make these services Web-accessible New workflows needed

  13. Methods - good, bad, and ugly! data • Aggregate data in time and space • Create customized products • Embed information in pictures Embed information in pictures information

  14. 8-bits of Information Chlorophyll • MODIS satellite image • Scaled exponentially 1-255 • Bad data, no data = 0

  15. 8-bits of Information 8-bit Gif = 680 Kb HDF-EOS = 6.5 Mb NetCDF = 32 Mb Chlorophyll mg/m3 0 1 60 0 255 Reasonable representation of chlorophyll

  16. 8-bits of information green red

  17. http://www.cooa.unh.edu/cgi-bin/hdfeos2image.pl?color_file=/education/icebox/rbob_030605_test_gif.act&grid_name=WebCOAST&field_name=chlor_a&output_format=gif&data_file=COOA_Satellite_Data_Products/A2006089_nea.eos&scale_file=/education/icebox/scale_chlor_a.txt

  18. Results data • Data stream greatly reduced • Information for many uses is not lost information

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