1. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer: Overview and Extension to INDIGO http://geoapp.ucsd.edu http://indigo.nasa.gov http://geoapp.ucsd.edu Paul Jamason | Scripps Orbit and Permanent Array Center (SOPAC ) IGS Analysis Center Workshop, Miami, 2008

2. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer/INDIGO: Participants GPS Data Products for Solid Earth Science; NASA REASON CAN PI’s: Frank Webb, JPL; Yehuda Bock, SOPAC; Sharon Kedar, JPL Ruey-Juin Chang, Peng Fang, Paul Jamason, Ian MacLeod, Linette Prawirodirdjo, Melinda Squibb, George Wadsworth (SOPAC); Danan Dong, Sue Owen (JPL) Modeling On-the-Fly Solutions for Earth Science; NASA ACCESS Project PI’s: Marlon Pierce, Indiana University (and above PI’s) Robert Granat, Jay Parker (JPL), Galip Aydin (IU) (and above) INDIGO: Inter-Service Data Integration for Geodetic Operations; NASA REASON CAN PI: Ruth Neilan (JPL/IGS) Co-I’s: Angie Moore, Frank Webb (JPL); Dave Stowers (JPL/IGS); Carey Noll (NASA/GSFC/CDDIS); Mike Pearlman (CFA/ILRS); Dirk Behrend (NVI/IVS)

3. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Background 5-year NASA REASoN project (GPS Data Products): deliver analysis products using newer IT standards Portlet-based web portal; web 2.0 (mapping, inter-portlet communication) Develop/use standard formats (XML) and methods (web services) for improved metadata and data exchange NASA ACCESS project (MOSES): users perform modeling via portlets Apply various time series models (QOCA, RDAHMM) Extend to INDIGO: integration of multiple space geodetic techniques Leverage GPS Explorer technologies GNSS/VLBI/SLR/DORIS: provide uniform methods of data retrieval

4. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Framework Uses the java-based windows in web portal with user controls; can be used in other portal frameworks (JSR-168 standard) user accounts; save data/results for future viewing Employs a workflow/dashboard approach users select and save groups of GPS sites via mapping portlet. Data queries, modeling operations are performed on these in other tabbed pages. Inter-portlet communication Dynamic content produced via calls to back-end web services

5. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Portal: Content Mapping Interface SOMI: Scripps Online Mapping Interface University of Minnesota MapServer; input data layers stored at SOPAC (e.g., fault lines) Draw bounding boxes to dynamically select sites Recent performance boost - faster map loading Migrating to OpenLayers open source version of Google Maps Processed GPS coordinates millions of xyz coordinates from SOPAC/JPL/REASON combination/PBO combination dynamically queryable and exportable to urls GPS Time Series, Velocities, Strain Maps

6. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Web Demonstration

7. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Portal: Geophysical Resource Web Services Standardized approach to data submission/retrieval Inter-agency data exchange of processing metadata, coordinates Use XML standards Geography Markup Language (GML): represent features/geometry/reference systems/time observation collections; filter encoding transfer XML via SOAP/web services Independent server-side code GPS Explorer is only a client Call web services from other web pages/sites, command-line utilities, etc.

9. GPS Explorer - IGS AC Workshop - Miami 2008 SOPAC INDIGO Support: XML IGS Site Logs Overview: http://sopac.ucsd.edu/projects/xml

10. Sample XML IGS Site Log <igsSiteLog xmlns="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004" xmlns:mi="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/monumentInfo/2004" xmlns:equip="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/equipment/2004" xsi:schemaLocation="http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004 http://sopac.ucsd.edu/ns/geodesy/doc/igsSiteLog/2004/igsSiteLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> Scripps 5 - Mt. Soledad SIO5 SIO5 ECCS 40460M006 La Jolla California USA -2456115.13 -4768905.79 3439232.44 +325024.00 -1171500.00 185.53 ASHTECH Z-XII3 GPS LP02814 CD00 2002-05-15T00:00Z 2003-01-09T00:00Z ASH701945B_M CR519991867 BPA 0.0083 2002-05-15T00:00Z 2004-09-29T00:00Z

11. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Portal: INDIGO SOPAC and INDIGO Utilize IT resources and JPL collaboration in support of IGS Potential development areas: Include all GNSS sites at CDDIS/JPL/IGN Extend GPS Explorer capabilities to include SLR/VLBI/DORIS Site mapping Common data exploration/visualization tools Global Seamless Archive Center (publication of data archive holdings) Incorporate GPS analysis products Web services wrapper

12. GPS Explorer - IGS AC Workshop - Miami 2008 GPS Explorer Portal: Future Focus on IGS support via INDIGO How can GPSE serve as common interface for user access to data/metadata? Add “Products” tab Portal name change? Evaluate/implement feedback from user survey, NASA website developers Ingest/display new data sources Cross-browser compatibility Interactive Strain Maps

13. GPS Explorer - IGS AC Workshop - Miami 2008 Conclusion/Discussion Feedback GPS Explorer: http://geoapp.ucsd.eduhttp://geoapp.ucsd.edu Click on “Feature Requests” at top of any page pjamason-at-ucsd.edu

14. Login Page

15. Site Selection

16. Site Data Visualization

17. GPS Site Processed Coordinates

18. GPS Site Position Time Series

19. GPS Site Velocities

20. Strain Resources

21. Filter Time Series: Job Setup

22. Filter Time Series: Output