The Virtual Heliospheric Observatory VHO. The VHO Team Adam Szabo (lead)NASA/GSFC Andrew DavisCaltech George HoJHU/APL Justin KasperMIT Jan MerkaU. Maryland,

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Presentation transcript:

The Virtual Heliospheric Observatory VHO

The VHO Team Adam Szabo (lead)NASA/GSFC Andrew DavisCaltech George HoJHU/APL Justin KasperMIT Jan MerkaU. Maryland, Baltimore County Thomas NarockL3 Communications 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.

VHO Services No data flow through the VHO middleware! Our Role: Connecting data to independent services. Enable services not develop them ourselves. Ability to search for services Metadata of service description Ability to search for data related IDL routines (HelioSoft) Metadata of routines Mission independent VHO Data Environment

VHO Architecture Lightweight middleware with search capability. Common metadata description of products and services based on SPASE dictionary. Data exchange and synchronization mechanism. Minimum possible requirements on data providers. Low cost extensible system deployed in phases.

VHO Development Phases (1) L1 Data Environment L1 data sets made web accessible. Data products described in SPASE compliant metadata format. Data exchange synchronization established between data providers.

VHO Development Phases (2) Basic VHO Middleware with both Web and API user interfaces. All middleware static and dynamic metadata products developed. Public access to software tools with metadata.

VHO Metadata Static Metadata (requiring no or infrequent updates) Product Metadata – Complete description of data content. Registry Metadata – Data service information Service Metadata – Complete description of added-value data processing services. VHO Metadata – WSDL description of VHO functionality. Dynamic Metadata (requiring daily updates) Availability – Current range of available data. Software – Current list of available software tools.

VHO Web Interface Data can be searched for by the following ways: Time Date/Time Bartel/Carrington Rot. S/C Location GSE/GSM/HGI coord. Region name Measurement Type e.g., magnetic field, thermal plasma, energetic particles Select time period Select region of interest Optionally refine S/C selection

VHO API IDL VM Demo software Library Perl Java CoSEC IDL (soon) The VHO API will allow access to all VHO functions.

VHO Development Phases (3) Full VHO Connection to processing services. Connection to other VxOs

Community Input Large, diverse and dynamic team membership. Submit recommendations via our web page: Ask users to prioritize upcoming feature additions. Web statistics Bi-annual VHO meetings at AGU conferences.

VxO Interaction Our first focus will be on interacting with VSO. Will not attempt to recreate full VSO web interface. Rather, a heliosphere centric view will be provided. API will have access to most VSO capabilities. WSDL description of VHO services. Passing dynamic metadata between VxOs would allow the execution of complex queries.

BACKUP

Data Provider Requirements The VHO is designed to minimize requirements on data providers. The VHO will work with any currently available data formats or services. The VHO team will assist data providers in the one-time generation of the detailed product metadata. Data providers will have to allow access to their products. The preferred mechanism will be via the VHO team provided SOAP interface for local queries. But implementing this SOAP interface will not be mendatory. Data providers will have to allow the VHO synchronization routines to run on their machine providing metadata updates.

A 1 23 DR2 DR1 VHO a bc DR3 Data Exchange Backbone a local 1 A b 1Ab DR4 Data Exchange Synchronization Synchronized copy of data from similar instrument used to improve calibration. Synchronized copies of various other data products used to generate merged or added value new product.