CEOS Landsat & SRTM Project(CLASP) For discussion at Joint WGISS/Subgroup Meeting Thailand, September 2003 Wyn Cudlip BNSC/QinetiQ Lorant Czaran UN
Background (1) • Developing Countries want improved access to Landsat data • Also advice/help with custom processing for Land Cover analysis • Several UN Agencies (Associate members of CEOS) have expressed interest in on-line access to satellite data • CEOS Plenary direction to work with Developing Countries • Landsat global mosaic data becoming available • SRTM data at 90m also becoming available • global availability by end of 2004 • DLR data already available but at cost!
Background (2) • NASA have offered UN 2 sets of Global Landsat coverage • 1990; 30m, 7 bands, 7,500 scenes; 8Tbytes • 2000; 9 bands (1 at 15m), 8,500 scenes; currently being compiled (2500 scenes already available). • Earthsat already provides 5deg 1990 mosaic at full resolution (7, 4 2 bands, MrSID files). Working on 2000 dataset. • http://zulu.ssc.nasa.gov/mrsid (http download 70Mb per tile) • NASA Mosaic Project to provide WMS access to 2000 data (Bands 3,2,1) by end of 2003 • Access by developing countries is still difficult • UN have insufficient resources in (storage and bandwidth) to improve access • UN Cartographic Section generated WMS for Africa but unable to host due to excessive demand • Improving access would be good candidate to demonstrate OGC technology and CEOS Agency co-operation • Might be able to link to WSSD follow-up activities (area 5)
The Problem • Need distributed host sites with sufficient on-line storage & good internet bandwidth. • Need suitable server software - WMS, WFS and WCS • Need suitable client software (tailored for various users) • Re-projection and seemlessness may be an issue • (data is in UTM) • Need firm UN requirement • Need recommendations for additional processing capability based on output of WCS • Could be land cover generation (unsupervised classification) in client defined areas – or subset downloads at desired band combinations and projections.
The Proposal • Phased development of a number of work packages: • WP1 Overall Co-ordination and management • Resolve data policy issues • WP2 Initial WMS deployment: • Mosaic Project for 2000 data (3,2,1); Improve resolution to 15m. • Other WMS for Landsat 1990 RGB (7,4,2); • Initial client development; Use adaptation of UN and other suitable clients. • Further deployment for Landsat 1975 dataset • Establish links with vector (WFS) servers • WP3 Initial WMS/WFS deployment for SRTM 90m • WP4 3D Viewing development with OGC Terrain Spec • WP5 WCS development/deployment; further client development; data processing development • WP6 Service chaining developments • WP7 Integration with GRID activities (exploiting GRID backbone)?
Task Team Involvement • Global Datasets - requirements and overall co-ordination • Data Services - Help establish WMS, WFS and WCS systems • IDN - register Landsat datasets and Services • Networks - Network support • Liaison with Global Map Project? • Source of vector data.
CEOS WGISS benefits • Provide a focus for further development/exploitation of OGC standards • Generate “Lessons Learnt” to assist newcomers to OGC implementations • Provide a portalthrough which individual Agency Landsat holding could be accessed. • Assist WGISS Task Team interaction • Help develop Liaison with Global Map Project.
Distributed network of servers • Could divide world into 7 basic regions (~1Tbyte each) • North America • South America • Europe • Africa • Russia • Asia • Australia • But could have any number of mirror sites • Some with language specific clients.
Schedule • Proposed 2-year project Concept Presentation Progress Presentation Final Presentation CEOS Plenary 2004 2005 WGISS/ Subgroups Project Approval Initial WMS Deployment Initial SRTM availability WCS Terrain View Integrated availability
Conclusion • Proposed Project for improved access to Landsat and SRTM data has a number of benefits for CEOS WGISS • 2-year project with a number of phases. • Would be part of Global DataSets Task Team activity. • Emphasis needs to be on access to raw data. • Lorant Czaran (UN) would be “User Champion”. • Wyn Cudlip to be WGISS Champion • Project WIKI at: • http://grid-tech.ceos.org/landsatwiki • ceos-grid grid-tech
Next steps (next 2 months) • WGISS approve project start. • Establish points of contact with interested agencies • Lorant to solicit support from UN Agencies • Prepare slides for upcoming CEOS Plenary • Approach Mosaic Project with mirroring proposal • Agencies volunteer to contribute • Update Project Plan • Maintain Action Register • Links with SDI, Global Map, Digital Earth? • Exploitation Software. E.g., GRASS • Link to Keyhole? • Example Clients: • http://www.bluebox.space.qinetiq.com/landsat/ • http://viewer.digitalearth.gov/viewer.cgi?gotocontext=africa.xml • http://zulu.ssc.nasa.gov/mrsid
Preliminary POCs • USGS John Faundeen • NASA Ken McDonald • NOAA Dave Clark • RAS Victor Savorskii • ESA Ivan Petiteville • GISTDA Pakorn • NASDA Osamu Ochiai • NRSCC Dingsheng Liu • CCRS Brian McLeod • CNES Paul Kopp