1. The Virtual Heliospheric Observatory VHO Adam Szabo, Tom Narock, Jan Merka, Aaron Roberts, Jon Vandegriff, George Ho, Jim Raines, Peter Schroeder, Andrew Davis, and Justin Kasper

2. The VHO Team Adam Szabo (lead)NASA/GSFC Andrew DavisCaltech George HoJHU/APL Justin KasperMIT Jan MerkaU. Maryland, Baltimore County Thomas NarockU. Maryland, Baltimore County Jim RainesU. Michigan Kathryn RashNASA/GSFC D. Aaron RobertsNASA/GSFC Peter SchroederU. California, Berkeley Jon VandegriffJHU/APL Collaborators: Paul GazisSETI InstituteRichard KellerNASA/ARC Neal HurlburtLockheed Martin SALShawn WolfeNASA/ARC Team membership is dynamic as new data products and services will be added.

3. VHO Basics The primary objective of the VHO is to enable scientists to search for, locate and efficiently use distributed heliospheric data sets. One stop shopping for heliospheric data Rapid access to data products still at PI sites Uniform description of data products (metadata) Complex searches over all data products and VxOs Linking to relevant software tools (HelioSoft) and services. Common data environment to simplify user software development Support for the emergence of new multi-instrument merged data products

4. Spacecraft InstrumentDescriptionMax ResolutionTime Span WINDMFIMagnetic field 3 sec1994-Present SWEThermal plasma (p, Alpha, anisotropy) 92 sec 1995-Present SWEe distribution functions 92 sec1995-Present 3DPProton moments 3 sec1995-Present 3DPElectron Moments 3 sec1995-Present 3DPp low energy spectra 24 sec1995-Present 3DPp high energy spectra 92 sec1995-Present 3DPe pitch angle distributions 92 sec1995-Present 3DPe low energy spectra 92 sec1995-Present STICSSuprathermal ion distribution functions 1 day2005 EPACTLow energy particle sectored counts 1 hourEvents ACEMAGMagnetic field 16 sec / 1 sec1997-Present SWEPAMSolar wind ions 64 sec1998-Present CRISGalactic cosmic rays 1 hour1998-Present SISSEP, GCR and ACR intensities 1 hour1998-Present SWICS/SWIMS Solar wind composition 12 min1998-Present EPAMSolar energetic particles 10 sec1998-Present SoHOCELIAS/PMSolar wind ions 30 sec1996-Present GenesisGIMSolar wind ions 2.5 min2001-2004 BPROXYMagnetic field direction 2.5 min2001-2004 IMP 8MAGMagnetic field 15 sec1973-2000 PLSSolar wind ions 1 min1973-2000 Helios 1E1/E2Mag field + solar wind ions 40 sec1974-1985 Helios 2E1/E2Mag field + solar wind ions 40 sec1976-1980 STEREO A/B MAGMagnetic field 0.125 sec2006-Present PLASTICSolar Wind ions 2006-Present UlyssesVHMMagnetic field 1 sec1990-Present BAISolar wind ions 4 min1990-Present MGSMAGSolar wind pressure estimate 2 hour1999-2004 Initial VHO Data Sets

5. Web Interface Professional web design Update/News info Collaboration tools

6. VHO Web Interface – Query Builder Searches by: Time Date/Time S/C Location GSE/GSM/HCI Measurement Type e.g., magnetic field, thermal plasma, energetic particles Parameter Values Select time period Select query parameters Select logical operation

7. Query Results Time periods satisfying the query are returned Matching product identified Links to the data granules provided Links to the SPASE metadata provided

8. New Developments Autoplot (see next few slides) SPASEQL, a language for cross-VxO queries, for example VHO VMO Internal database optimizations for speed Event lists being added Ever more data products added – often products that would not have been discovered through traditional portals like CDAWeb Web design improvements

9. Autoplot Dynamic on-the-fly plotting becoming available

11. Autoplot Features Zooming Scaling Multi-panel plots Cuts through spectrograms Scanning through data spanning multiple days/files ASCII translations Learn more at: http://www.autoplot.org/http://www.autoplot.org/..\PLASTIC2009

12. Some Reasons Data Providers Participate Query builder allows complex science-driven searches across missions based on physical quantities, time, spacecraft location, etc. (in other words it delivers their data to people who need it) Autoplot allows users to browse these data relatively painlessly Access to future planned web services such as bundling multiple files, coordinate transformations, reaveraging, advanced plotting (Visbard), etc.

13. http://vho.nasa.gov Check it out!

14. Backup Slides

15. Instrument Metadata Human readable, formatted metadata Links to SPASE XML files

16. Product Metadata

17. Parameter Information Detailed information provided for all parameters inside the returned data files. Granule Metadata Information provided on each data granule and checksum for download integrity.

18. VHO API IDL VM Demo software Library ­ Perl ­ Java ­ CoSEC ­ IDL (soon) Downloadable IDL VM application demonstrating the use of the VHO API.

19. VHO API VSPO using the VHO API to deliver Helios 1,2 data