Data Retrieval Issues

Transcription

1 ESA Space Weather Programme Study Final Presentation R1. Overview R2. Detailed Rationale R3. Benefits R4. Market Analysis R5. System Requirements R6. Space Segment Definition R7. Ground Segment R8. Prototype R9. Programmatics Space Weather M. Kruglanski and D. Heynderickx Belgian Institute for Space Aeronomy ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 1 Data Retrieval Issues Resource location Access method Data Availability Encoding method Content description Reliability Data units, instrument specification, error bars,... Data processing e.g. background correction w 3 GOES-8 Energetic Particle Key Parameters (Coordinated Data Analysis Web) ftp://cdaweb.gsfc.nasa.gov/pub/... CDF file SAMBA Flux Gate Magnetometer data (CNES French Cluster Data Centre) Web query zipped files Abisko Intermagnet magnetograms (Edinburgh Geomagnetic Information Node) e_gin@mail.nmh.ac.uk request ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 2 1

2 Prototype Approach Three Levels Yellow pages Data retrieval High-level access Main components Web interface Relational database Background scripts High-level access: physical quantity region in space time frame Yellow pages: missions, instruments,... service providers, protocols,... data files, formats,... parameter description, units,... other resources,... Data retrieval: downloading files extracting requested data adding support data re-formatting result graphical preview w 3 ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 3 Channel column: #5 wave length: nm Source file Detector Source file Quantity Component YP Content Description Example: =1-minute average of GOES-8 Solar Xray Flux (ascii file) from 16 days ago to yesterday ftp://ftp.sel.noaa.gov/pub/ lists/xray/yyyymmdd_g8xr_1m.txt resolution: 60 seconds (or longer) extraction information Xray_flux_none <Xrs-g8@GOES-8> (G8xr_1m_txt#8) Component =None Type Detector Type =Scalar data Quantity =GOES-8 Solar X-ray Monitor 2 channels, res. 512 msec (or longer) PI: Dr. H. A. Garcia, SEL/NOAA Environmental Research Laboratories short description, reference postal address, web site link to web page and to NSSDC Mission Master catalog =X-Ray radiant density flux unit: W m 2, range: Type Depends on Meta-Param. =Photon wave length unit: nm range: Provider Mission Provider =NASA/NOAA Geostationary Operational =Space Environment Center anonymous FTP system Environmental Satellite 8 Manager: E. Hildner Program Scientist: Dr. R. D. Zwickl Contact: Mrs. V. Raben (vraben@sec.noaa.gov) postal address, web site, reference Institute or centre: NOAA Space Environment Center web page, link to NSSDC Master catalog web site, postal address Celestrack TLE ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 4 2

3 YP Sample Screenshot ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 5 Sample Yellow Pages Query I am looking for information on the SOHO spacecraft and onboard instruments. Where can I find more information about the Ulysses spacecraft? What is the current location of the Cluster satellites? I am looking for information on the SOPA particle analyser onboard the LANL satellite. Where can I find data from the EPAM instrument onboard ACE? What data is accessible at NOAA Space Environment Center? What is the availability of the GOES- 8 solar X- ray flux data at NOAA/SEC? Which space or ground missions are monitoring the geomagnetic field? What kind of magnetic data are recorded at the INTERMAGNET Abisko observatory? ESTEC, December Are there 6, 2001 unidirectional ESA Space proton Weather Programme flux Study measurements - Final Presentation 6 for energies between 1 and 4 MeV? 3

4 Data Retrieval Strategy List of channels Database Data files Expanding List of files to download Time range Ephem. files Result ascii file Requested files File retrieval HTTP FTP w 3 Graph. preview Local caching SMTP Status ( ) Data extraction ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 7 Data Retrieval Sample 14 files to be retrieved: GOES-8: ACE: ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 8 4

5 Sample Data Retrieval I want to retrieve 1- hour data from several ACE instruments. I want to retrieve proton flux data from ACE and GOES- 8. I want to retrieve magnetic field data from the INTERMAGNET stations I want to evaluate the cosmic ray LET spectrum for XMM. I want to compare the AP-8 MAX and Remote model CRRESPRO models over the Polar orbit. evaluation along spacecraft orbit + ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 9 High-level access Space region SE parameter Database Time range Selection List of identified channels I want to retrieve magnetic field data at geostationary orbit... for a location Level 2 Additional filtering? near Lagrange point ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 10 L1 5

6 Results v Prototype J Working demonstration (Yellow pages & Data retrieval) J Variety of access types (Ftp, Http, Smtp, Remote models) L Maintainability of the database content (need of editors) v Case Study Demonstration ð Post-event analysis: April 4 10, 2000 Ø see WP-433: T. Pulkkinen, H. Koskinen, E.I. Kallio, M. Palmroth (FMI) Ø 10 ESA spacecraft ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 11 Case Study Demonstration ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 12 6

7 ESA Space Weather Programme Study ESTEC, December 6, 2001 ESA Space Weather Programme Study - Final Presentation 13 7