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ViRBO Development Page

This page contains

  • General progress and development notes
  • Notes on radiation belt-related data that are in the process of being transformed into a more usable form
  • Notes on radiation belt data that will be available through the ViRBO data portal (planned to be opened in Fall, 2008).

Contents

  1. Introduction
  2. Timeline
  3. Meetings
  4. Data List
    1. Data Sets
      1. Radiation Belt Content Index
      2. SAMPEX Daily-averaged L=1.0-9.0, dL=0.1
      3. GEO Plasma Reanalysis
      4. Qin-Denton Magnetic Field Model Inputs
      5. Augsburg ULF Wave Index
      6. OMNIWeb High-res
    2. Instrument Data
      1. CRRES
      2. DSP-21
      3. GEOTAIL
      4. GOES
      5. HEO 1 and HEO 3
      6. ICO
      7. LANL GEO
      8. LANL GPS (NS41)
      9. METOPS
      10. OV1-19
      11. OV3-3
      12. POES
      13. Polar
      14. RBSP
      15. SAMPEX
      16. SCATHA
      17. S3-3
      18. TSX-5
      19. Akebono
      20. AMPTE
      21. Apex
    3. Wanted List

1 Introduction

ViRBO (Virtual Radiation Belt Observatory) is a VxO project that began operations in January, 2007. For more information about Virtual Observatories, see NASA's Living With a Star Data Environment html

2 Timeline

Status as of June, 2008: Most of the metadata is ready. Most of the data is ready. We are working to make all of this data accessible through a unified interface. Until this interface is complete, you may browse new data sets or see what data sets will be available in the Data List section of this page.

  • 2008, Spring: Start making new data sets available via FTP.
  • 2008, Summer: Beta version of ViRBO web portal.

3 Meetings

We have hosted a number of meetings on the ViRBO wiki

Meeting Schedulers: meetingwizard.com/ | meetomatic.com

4 Data List

The list of (radiation belt) data that we plan to have available through the ViRBO data portal, which will be made public in Summer, 2008. In the following data set or instrument data lists, there is an item that says "Unified Access through ViRBO API?". When the answer to this question is "yes", the data will be made available through a web interface that connects to the ViRBO API. Scripts for accessing ViRBO data will be available in Matlab and IDL when the data portal is opened to the public.

Note that many of these data sets are not in an easily usable form, and we are working to reformat them (and the posted code has not been tested, an is probably missing dependencies, but is posted on this development page only for those brave enough to try to use them before we have had a chance to test them).

This list also includes information about the status of our work on these data sets. This list will grow based on community feedback. The priority in the first year is observational data; in the second year we will begin to add model data. If there are any radiation belt-relevant data sets that are not on this list, send an email to virbo@virbo.org.

4.1 Data Sets

4.1.1 Radiation Belt Content Index

  • Project: Journal Paper - Baker et. al 2005 NASA ADS
  • Metadata: Incomplete
  • Access through ViRBO API? Yes, Fall 2008.
  • Primary Repository: ViRBO at ftp://ftp.virbo.org/kanekal/RBI
  • Notes: Data have been provided by Kanekal. They need to have geometric correction factor applied to get the RBC index. Correction approach is described in paper.

4.1.2 SAMPEX Daily-averaged L=1.0-9.0, dL=0.1

  • Project: Has appeared in many journal articles, e.g., figure 1 of NASA/ADS
  • Metadata: Incomplete
  • Access through ViRBO API? Yes, Fall 2008
  • Primary Repository: ViRBO at ftp://ftp.virbo.org/kanekal/SAMPEX in files named FluxVsL.YYYY.dat.
  • Notes: Data have been provided by Vassiliadis via Kanekal.

4.1.3 GEO Plasma Reanalysis

4.1.4 Qin-Denton Magnetic Field Model Inputs

  • Project: Journal Paper - Qin et al., 2007 NASA/ADS
  • Metadata: Complete
  • Access through ViRBO API? Yes, Summer 2008.
  • Primary Repository: Currently Denton's homepage. Eventually ViRBO.
  • Notes: Code is available at ftp://ftp.virbo.org/denton.

4.1.5 Augsburg ULF Wave Index

4.1.6 OMNIWeb High-res

4.2 Instrument Data

Items marked in red will not be available through the ViRBO API (either due to data access restrictions or due to the state of the data set).

4.2.1 CRRES

  • Instruments
    • Medium Energy Analyzer (MEA)
    • HEEF, PROTEL, MAG
    • Orbit: GTO
    • Duration: < 2 years
  • Relevant Data
    • Electrons .1 -1.5 MeV
  • Availability
  • Data Status
    • MEA, HEEF, PROTEL are in Sebastien's archive.
  • Metadata
  • Notes
    • O'Brien notes a need to consider putting MAG data in more common coordinate system
    • Need to test O'Brien's Matlab readers zip
    • In pretty good shape, but contamination in the inner zone (O'Brien)

4.2.2 DSP-21

  • Instruments
    • CEASE (dosimeter and telescope)
    • Orbit: GEO
    • Duration: August 2001-
    • P-channels 20 – 100 MeV, 4 integral chans
    • E-channels 0.06 – 4 MeV, 5 integral chans
  • Availability
    • See G. Ginet
  • Notes
    • O'Brien, Huston, and Ginet developing inversion techniques to maximize spectral information

4.2.3 GEOTAIL

  • Instruments
    • EPIC (Energetic Particle and Ion Composition instrument)
    • Energy channels for both the instrument subsystems (ICS and STICS) are here.
  • Relevant Data
  • Availability
    • Through ViRBO API? Undecided.
    • Geotail EPIC data hosted here
  • Data Status
  • Notes
    • Onsager has worked with charged particle data and will provide us with notes on this project and the status and usability of these data. PI is R. McEntire at APL.

4.2.4 GOES

4.2.5 HEO 1 and HEO 3

  • Instruments
    • DSU1 (HEO1), DSU2, DSU3 (HEO3)
    • Orbit: Molniya, L>2, high altitude, little coverage L<4
    • Duration: HEO 1 1994-, HEO 3 1997-
  • Relevant Data
    • P-channel HEO 1: >80, >160, >320 keV, >20, >40, >55, >66 MeV
    • P-channel HEO 3: >80, >160, >320 keV, >5, 8.5-35, 16-40, 27-45 MeV
    • E-channel HEO 1: >130, >230 keV, >1.5, >4, >6.5, >8.5 MeV
    • E-channel HEO 3: >130, >230, >450, >630 keV, >1.5, >3.0 MeV
    • Absolute position may never be available (only magnetic coordinates (B,L)
  • Availability
  • Data Status
  • Notes
    • "Not very quantitative" (O'Brien?)
    • Tim Guild is performing proton cross-calibration with GOES during SEPs.
  • Metadata Status

4.2.6 ICO

  • Instruments
    • 5 dome dosimeters, each of which produces a "total dose" channel, an "electron counts" channel, and a "proton counts" channel. As with the HEO data, the dome dosimeters have some caveats.
    • Duration: 2001-
    • Orbit: 45 degrees, circular, L>2.5, high altitude, 2001-
  • Relevant Data
    • Total dose under 5 hemispherical shields, 39.4-474 mils Al
    • P-channels: >15, >24, >33, >44, >54 MeV
    • E-channels: >1.2, >2.2, >4, >6, >8 MeV
  • Availability
    • Through ViRBO API? Yes, pending release.
    • Available to US Govt and FFRDCs upon request to Aerospace
    • Recently released for public. Will be posted to ftp site by O'Brien
    • O'Brien has processed protons using his MATLAB reader
  • Note
    • "Not very quantitative" (O'Brien?)
    • Tim Guild is working on new proton geometric factors.
  • Metadata status
    • README describing the dataset by O'Brien doc.


4.2.7 LANL GEO

  • Instruments
    • Charged Particle Analyzer (CPA)
    • Synchronous Orbit Particle Analyzer (SOPA)
  • Data
    • Electrons 0.3-2 MeV
    • Protons 0.8-160 MeV
  • Availability
    • Through ViRBO API? Yes. Summer, 2008.
    • Limited accessibility through a LANL web interface http://leadbelly.lanl.gov/lanl_ep_data/request/ep_request.cgi
    • From ppt: http://cdaweb.gsfc.nasa.gov has LANL 1989/1990/1991/1994/1997/2001/2002 (MPA, SPA <=1997) Electron temperature in 2 energy bands (50-225 keV, 315-1500 keV) Proton temperature in 2 energy bands (50-400 keV, 1.2-5.0 MeV), Partial electron densities in 2 energy bands (50-225 keV, 315-1500 keV), Partial proton densities in 2 energy bands (50-400 keV, 1.2-5.0 MeV), Alpha flux (Helium) from ~0.9 MeV to ~1.3 Mev, Heavy Ion flux at ~5 MeV to ~15 MeV (includes carbon, nitrogen, and oxygen, electron flux in 2 energy bands (50-225 keV, 315-1500 keV), Proton flux in 2 energy bands (50-400 keV, 1.2-5.0 MeV).
  • Data Status
    • CDF files for SOPA_ESP (LANL_1991, LANL_1989, and LANL_LANL) have been uploaded to ViRBO ftp://ftp.virbo.org/LANL. Please talk to Reiner Friedel before using these data
  • Notes
    • Need to find out about CPA data
    • Need to document difference between CDAWeb holdings and Reiner's uploads to ftp://ftp.virbo.org/LANL
  • Metadata

4.2.8 LANL GPS (NS41)

4.2.9 METOPS

  • Instruments
    • Medium Energy Proton/Electron Detector (MEPED)
    • TED
  • Relevant Data
    • Electrons >30,>100,>300 keV
    • Protons 30 keV->140 MeV
  • Data Availability
  • Notes
  • Metadata Status

4.2.10 OV1-19

4.2.11 OV3-3

4.2.12 POES

  • Instruments
    • Medium Energy Proton/Electron Detector (MEPED)
    • TED
  • Relevant Data
    • Electrons >30,>100,>300 keV
    • Protons 30 keV->35 MeV (After 140 MeV SEM2)
  • Availability
    • Through ViRBO API. Yes, at highest (~2 second) resolution.
    • NGDC raw binary files (~2 second res.) http://poes.ngdc.noaa.gov/data/full
    • ONERA has ~8 second averaged MEPED (for 15, 16, and 17) data in PRBEM format based on .bin files in NGDC directory. They will contribute these but want ~2 second resolution data (MEPED and TED) files being converted by Kihn.
    • ONERA has 12 & 14 in CDF format that they will contribute
    • From ppt: NOAA 5/6/7/8/10/12/14 (MEPED SEM) Count Rates for 0 Deg. telescopes, 5 proton and 3 electron energy bands (counts_0dg), Count Rates for 81/83 Deg. telescopes, 5 proton and 3 electron energy bands (counts_90dg), Count Rates for omnidirectional proton telescope, 3 energy bands ounts_omni), calculated perpendicular proton flux, 5 energy bands (Jperp_p), calculated perpendicular electron flux, 3 energy bands (Jperp_e), calculated omnidirectional proton flux, 5 energy bands from 0/81 and 3 from omni telescopes, calculated omnidirectional electron flux, 3 energy bands from 0/83
  • Data Status
    • All binary data have been processed. Will be posted after metadata is complete.
  • Metadata

4.2.13 Polar

4.2.14 RBSP

4.2.15 SAMPEX

4.2.16 SCATHA

4.2.17 S3-3

4.2.18 TSX-5

  • Instruments
    • CEASE (dosimeter and telescope)
    • Orbit: LEO, 400 x 1700 km, 67 deg incl.
    • Duration: June 2000- Jul 2006
  • Data
    • P-Channels: 20 – 100 MeV, 4 integral channel
    • E-Channels: 0.06 – 4 MeV, 5 integral channels
  • Notes
    • "Developing inversion techniques to maximize spectral information" (who?)


4.2.19 Akebono

4.2.20 AMPTE

  • Instruments
    • Charge-Energy-Mass (CHEM) Spectrometer
  • Relevant Data
  • Availablity
  • Data Status
    • See Notes
  • Metadata
  • Notes
    • Vandegriff gave a presenation on the recovery of these data from VAX Binary to FITS AGU presentation
    • Vandegriff has expressed interest in making some of the code and his notes on this transformation available to the public, in case someone wants to work on the data now that it is in a modern file format. Vandegriff notes that these data will require additional processing in order to make them science-grade.

4.2.21 Apex

  • Instruments
    • Dosimeter
    • Oribt: LEO, 362x2500 km, 70 degrees
    • Duration: 1992-1994
  • Relevant Data
    • P-channel > 5, >20, >35, >35 MeV
    • E-channel >0.25, >1.0, >2.0, >5.0 MeV
  • Availability
    • See O'Brien
  • Notes
    • Broad channels with cross-contamination

4.3 Wanted List

Based on informal discussions with radiation belt scientists

  • Ephemeris along with L, L* for multiple magnetic field models. Some of this already exists. The PRBEM file format specifies that at least one magnetic field model is used. These parameters are straightforward to calculate with the ONERA libraries, but people would rather just have them pre-computed, especially since they are a fraction of the total data volume for most data sets.
  • Precomputed PSD data sets
  • Anomaly data sets. As of July 2007 we are looking into access to an number of data sets from Aerospace, ONERA. Specific sets include TDRSS (Tracking and Data Relay Satellite System), SAM (Satellite Anomaly Manager by Wilkenson at NGDC xls file possibly on line), NASA Janet Barth is contact person). SEP event list from NGDC. Put events as time series in CDF files?
  • A generally useful derived dataset is Richard Denton's Tsyganenko input file, located here: [2].
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