DIAL Update Doug Ilg Raytheon ITSS Doug Ilggsfc

Background • NRC report recommended broader distribution of EOSDIS functionality • Small scale data

Basic Design Goals • A turn-key data distribution system that: – Promotes EOSDIS standards

Building Blocks • Public domain, off-the-shelf (PDOTS) components – Apache WWW server – NCSA

“Classic” Features • Hybrid interface including HTML, Java. Script • Simple, configurable metadata search

“New” Features • • • Animation Coastline and political boundary overlays Color compositing for

V 0 Interoperability Results • Very successful demonstration at GOIN 99 • Used as

SEARCH HTTP - in place V 0 - in place CIP - planned DATA

LEGEND Peer-to-Peer RM Dialog Subordinate RM Dialog Client Dialog Retrieval Manager (global node) CIP

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DIAL Update Doug Ilg Raytheon ITSS Doug. Ilg@gsfc. nasa. gov HDF-EOS Workshop III September 14, 1999

Background • NRC report recommended broader distribution of EOSDIS functionality • Small scale data producers wanted easy-touse, yet powerful data distribution method • Many data producers have very tiny budgets

Basic Design Goals • A turn-key data distribution system that: – Promotes EOSDIS standards – Administrator • Low (no) cost • No licensing difficulties • Easy maintenance – User • • Easy to use Catalog search Dynamic browsing Easy data retrieval

Building Blocks • Public domain, off-the-shelf (PDOTS) components – Apache WWW server – NCSA Scientific Data Browser • Custom CGI – Search engine with HTML and Java interfaces – Basic visualization for browse purposes – Home grown “database” – JDBC interface • Free Web browsers

“Classic” Features • Hybrid interface including HTML, Java. Script • Simple, configurable metadata search – Spatial/temporal/other • Basic visualization of HDF and HDF-EOS files – HTML for structural information – GIF for browse imagery • Immediate data download – HDF/ASCII/binary • Inventory support – Custom “flat file” – JDBC

“New” Features • • • Animation Coastline and political boundary overlays Color compositing for multi-band images Cross-granule subsetting and subsampling Support for Version 0 protocol

V 0 Interoperability Results • Very successful demonstration at GOIN 99 • Used as basis for ESIP Federation “cluster” • Accepted as component of “System Wide Interface Layer” for Federation • Remaining problems: – V 0 is only supported on Sun and SGI – Seen as old technology – CIP is still in flux

SEARCH HTTP - in place V 0 - in place CIP - planned DATA HTTP - in place HTTP dialog Web Browser Earth Data Gateway V 0 dialog CIP Retrieval Manager CIP dialog Data Granules HTTP V 0 CIP internal CGI dialogs JDBC Catalog Database Catalog Flat File

LEGEND Peer-to-Peer RM Dialog Subordinate RM Dialog Client Dialog Retrieval Manager (global node) CIP Catalog Retrieval Manager (global node) CIP Catalog Retrieval Manager CIP Catalog