SPDF Science Advisory Group - September 29-30, 2005 Page 12/24/2016 9:09:48 PM Services of the Space Physics Data Facility (SPDF) / Sun-Earth Connection Active Archive (SECAA) and the THEMIS Mission Robert E. McGuire SPDF/Code 612.4, NASA Goddard Space Flight Center Greenbelt MD 20771

SPDF Science Advisory Group - September 29-30, 2005 Page 22/24/2016 9:09:48 PM Major SECAA Services Today Relevant to THEMIS Science - 1 Common Data Format (CDF) -Built on multi-dimensional conceptual view of data >Highly flexible, efficient file storage, high-performance data retrieval (hyperputs/gets), >Supports various modes of internal compression -Data Translation Web Service (DTWS) now available SSCWeb -Multi-mission orbits for coordinated science planning and retrospective analysis >Listing & display in mapped coordinates and by regions of geophysical space –Plus 3-D interactive displays >Time spans of region and magnetic conjunctions –Both spacecraft-spacecraft and with ground stations -Includes all recent satellites of S3C interest (33+) and many ground stations CDAWeb -Simultaneous data from most instruments on most current (non-solar) S3C NASA and related missions >Plus various ground-based experiments, selected holdings from some older missions -Easy data browse and display, user-specified time and parameter subsets with graphics, listings, file downloads

SPDF Science Advisory Group - September 29-30, 2005 Page 32/24/2016 9:09:48 PM Along-track zonal and meridional wind at selected heights TIMED data on CDAWeb

SPDF Science Advisory Group - September 29-30, 2005 Page 42/24/2016 9:09:48 PM Major SECAA Services Today Relevant to THEMIS Science -2 Web Service Interfaces -API for Internet access to our working services from other software packages >Query capability to determine valid inputs and receive status messages -Foundation for our capability to serve middleware such as VxOs and new applications CDAWeb Plus -CDAWeb-like Java client built on extended CDAS web services -Enables unified view of SECAA’s data and services to the level of each service >Pointers, combined file downloads, graphics and subsets Software -CDF -CDAWLib and CDFX, CDAWeb -Translators -SkeletonEditor, MakeCDF CDF and essentially all the above codes are Open Source under NOSA license

SPDF Science Advisory Group - September 29-30, 2005 Page 52/24/2016 9:09:48 PM CDF Current Status (details for breakout) CDF 3.1 -Development underway. Schedule for release in January Main features >Easy-to-use Standard Interface C & Fortran routines for zVariables (instead of Internal Interface) >Option for CDFs compatible with CDF 2.7 or earlier releases (via environment variable or API) 64-bit CDF included in IDL 6.2 for AMD64 is not working properly -Fix will be included in the next IDL release (6.3), currently scheduled for late 1Q, Working 64-bit CDF available at CDF News -Next IDL release (6.3) scheduled for release in late 1Q, 2006 >Will include the latest CDF library (Version 3.1) -Matlab will support CDF 3.1 in about 6 months Data Translation Web Service (DTWS) -Web client available at -Allows to translate one or more local and/or remote files (up to 10 files at a time) -Can be called within applications (see for details) -Individual data translators (both source and binary) are available at

SPDF Science Advisory Group - September 29-30, 2005 Page 62/24/2016 9:09:48 PM SPDF/SECAA Services are Used by the Community Figure represents system executions (not just web “hits”) Another metric is the number of distinct users (or distinct IP addresses) executing services -Most easily available for CDAWeb, e.g. period July 1, June 30, ~290 distinct addresses made >100 requests during the year, ~1300 distinct addresses made >10 requests

SPDF Science Advisory Group - September 29-30, 2005 Page 72/24/2016 9:09:48 PM How Can SECAA Contribute to the THEMIS Science Effort? THEMIS is using CDF as a base for its ground processing -I hope to talk about details, progress, needs in the afternoon breakouts -Is CDF support needed for other format translations, in other s/w packages? We plan to add the THEMIS spacecraft orbits to SSCWeb when launched -I hope to talk about mechanics of getting orbit data in the afternoon breakouts -Are there new orbit graphics or models needed for THEMIS support? -Are there predictive orbits that would be useful or interesting in SSCWeb sooner? Data we now serve via Web Services is available for THEMIS to build from We would be pleased to serve appropriate THEMIS in e.g. CDAWeb -To add complementary value and increase usefulness of THEMIS data >Make data available through web services (SOAP, REST) as well as FTP, HTTP >To better enable science use of THEMIS data in context of data from other missions >THEMIS adds to the science utility of the combined data collection -Work with THEMIS group to set up appropriate/complementary graphics (cf. TIMED) -Are there other housekeeping (cf. IMAGE), ground or other data needs? Open to discuss alternative/different approaches and other needs -E.g. more distributed technical solutions and other partnering