Connecting large data bases
Download
1 / 20

Annette Schloss Institute for the Study of Earth, Oceans and Space - PowerPoint PPT Presentation


  • 83 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Annette Schloss Institute for the Study of Earth, Oceans and Space' - casta


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

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


Goals for IPCC Data Access

data

information


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


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


Methods - good, bad, and ugly!

data

  • Aggregate data in time and space

  • Create customized products

  • Embed information in pictures

Create customized products

information






Geotiff Example

  • 1.4 degree grid

  • One+ time-steps (1 shown)

  • Only grids that overlay France

Data reduction and reformatting


Next Steps:

Make these services

Web-accessible

New workflows needed


Methods - good, bad, and ugly!

data

  • Aggregate data in time and space

  • Create customized products

  • Embed information in pictures

Embed information in pictures

information


8-bits of Information

Chlorophyll

  • MODIS satellite image

  • Scaled exponentially 1-255

  • Bad data, no data = 0


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




Results

data

  • Data stream greatly reduced

  • Information for many uses is not lost

information


ad