AMDA and CLweb Two complementary web-based services for spacecraft data exploitation with help from LESIA and support from CNES and CNRS Benoit Lavraud, on behalf of: The CDPP / IRAP team: (C. Jacquey, V. Génot, E. Budnik, N. André, M. Bouchemit, M. Gangloff, B. Lavraud) The SWEA / IRAP team: (J.-A. Sauvaud, E. Penou, A. Opitz, A. Fedorov, P. Louarn, B. Lavraud ) CESR, Toulouse, France

Why complementary? AMDA: - Mainly uses basic datasets for given mission - Allows statistical analyses (searches) - Creates Time-Tables (event lists) CLWeb: - Uses all products from instruments/missions - Allows detailed data analysis (distribution functions, HKP data, modes, etc.) - Uses Time-Tables Link: Time-Tables

CDPP :  French national centre (CNRS-CNES) > 10 years  Hosted at CESR, Toulouse, France  Missions: - Archiving data for long-term preservation - Data valorisation · Making data easy to use · Providing tools and services - Participation to Virtual Observatories

Web-based public service (in operation for ~3 years) Registered or “guest” access Transparent (automated) access to data  users play with parameters, not files AMDA local database : STEREO, CLUSTER, ACE, THEMIS, GEOTAIL, WIND, …, VEX, MEX, …, IMP-8, ISEE, … geo. indices External databases : CDAWeb, CASSINI, VEX-MAG, THEMIS/CESR, … Produces and exploits Time-Tables (event lists)  Helps to make science ! AMDA : Visualisation editor Parameter editor Download data Visual search External data Conditional search Time-Table manager

AMDA basics - Parameters (scalar, vector, …) Density Indices Magnetic/velocity vector Flux in a given energy band - … stored as xml files with Resolution Start-Stop times - … which the user manipulates : New parameters Plots/visualizations Searches & Time-Tables Downloads - File architecture hidden to the user 17/11/ /12/2005 Sampling 4s

AMDA time tables - Lists of time intervals : Start – Stop - Obtained : Visually : the user selects intervals by mouse click on a plot From a mathematical condition imposed on data content Up-loaded from user disk or from URL - Stored in txt or xml VOTable format - SPASE descriptor can also be provided - Time tables are also used in QSAS (Imperial College, UK) and CLWeb (CESR, France)

AMDA: HCS detection use-case

Build new parameters

Save and re-use them

HCS: Param<0

Conditional Search

Manipulate Time-Tables

Plot only for TTs

Refine or create new Time-Tables True sector boundary Magnetic sector boundary

 My own Time-Tables  Operations on TTs  Share TTs  Download TTs  Upload TTs  All shared TTs

CLweb: Detailed data analysis

 Various menus Electron PAD

May use HCS TT from AMDA and study details of PADs or BURST mode data

Detailed BURST data analysis with CLweb 2 minutes Reconnection exhaust at an HCS

Using time-tables Time-Table Start Time – Stop Time – number …. CL QSAS CAA Tools CDAWeb SUPERDARN APL server DARTS Requirements:  A Time-Table format standard Collaboration CDPP/CAA/QSAS/CL: VOtable  An interface for reading the standardised Time-Tables  A web interface module to skip from one time interval to another one Load Time-Table>>> Further notes on AMDA:  IDL/Matlab routines for reading TTs available on web site  The site explains how to access data through web-services  To register, just send an to  Free CDPP stickers for the first, next 10 to register !!! …

Conclusions From the above, the scientific interest for such tools is evidenced Complementarities of tools is important : it mutually enhances efficiency and usefulness Would take much more time to scientists to produce such results on their own It creates a community of user (ex: Time-Tables sharing) User feedback is needed and encouraged!

Perspectives Need for more standardization (including simulation databases) Need for more implication of scientists : Virtual Observatories subject is not a sole “technical” thing. New tools and services must be science-triggered and tested by scientists Need for diversification : time series are not the only class of objects which could be manipulated (images, maps, …) Need for conferences/places to disseminate these activities  Messenger cruise B-field cruise data will be in AMDA in April  Heliophysics studies: STEREO, VEX, MESSENGER, CASSINI, Earth, remote access to CDAWEB, and more in future…