Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repository
  3. Instrument
  4. ObservatoryObservatories
  5. Persons

SPASE version 2.2.2

Numerical Data Product: STEREO-A IMPACT/STE 10-s Level 1 Electron Spectra

Resource ID
spase://VEPO/NumericalData/STEREO-A/IMPACT/STE/L1/PT10S Get XML
Name
STEREO-A IMPACT/STE 10-s Level 1 Electron Spectra
Description

The IMPACT Suprathermal Electron (STE) Telescope data consist of 10-sec resolution electron counts from each of 8 sensors in each of 32 energy bands that span 1.9 keV to 100 keV. Only four sensors provide unsaturated data that are scientifically usable.

Additional information
Lin and Wang STE page at UCB
CDAWeb Skeleton Table
Acknowledgement

Please acknowledge the IMPACT P.I., Janet Luhmann of UCB

Contact
Role Person
1. Principal investigator Dr. Janet G. Luhmann Get XML
Release date
2010-08-12 00:00:00
Repository
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
CDAWeb

With subset, plot and ASCII list functions from CDAWeb

FTP access to files at SPDF
HTTP access to files at SPDF

In CDF via HTTP from SPDF

Format
CDF
File size
18 MB per 1 day
Acknowledgement

Please acknowledge the P.I., Janet Luhmann of UCB, and CDAWeb at GSFC/SPDF

Instrument
STEREO-A IMPACT STE Get XML
Measurement type
Energetic particles
Temporal description
Start date
2006-11-01 00:00:00
Stop date
2009-08-04 00:00:00
Note

Further extensions may be made

Cadence
10 seconds
Observed regions
Heliosphere.Remote1AU
Caveats

The four sensors labelled "U" and numbered 1-4 are saturated and should not be used. Sensors providing usable data are labelled "D" and are numbered 5-8.

Parameters

Parameter #1

Name
Electron distribution function
Parameter key
STE_spectra_f
Description

Electron counts in each of 32 energy bands between 1.9 keV and 100 keV, from each of 8 differently pointed but otherwise similar sensors

Cadence
10 seconds
Units
counts
Structure
Size
32 8
Description

Set of 32x8 electron counts

Fill value
-1.0e+31
Particle type
Electron
Quantity
Counts

SPASE version 2.0.3

Instrument: STEREO-A IMPACT STE

Instrument ID
spase://SMWG/Instrument/STEREO-A/IMPACT/STE Get XML
Name
STEREO-A IMPACT STE
Alternate name
STEREO-A IMPACT Suprathermal Electron Telescope
Description

The Suprathermal Electron Telescope (STE) is a new instrument designed to measure electrons in the energy range ~2-20 keV which are present as a superhalo on the solar wind electrons, and as CME shock-accelerated, or flare-accelerated populations extending beyond the SWEA range. These electrons are ideal for tracing heliospheric magnetic field lines back to their source regions on the Sun and for determining field line lengths, thus probing the structure of interplanetary coronal mass ejections (ICMEs) and of the ambient inner heliosphere.

STE utilizes passively cooled silicon semiconductor devices (SSDs) which measure all energies simultaneously. The STE consists of two arrays of four SSDs in a row, each ~0.1 cm2 area and ~500 microns thick. Each array looks through a rectangular opening that provides a ~20X80 degree field of view for each SSD with the 80 degree direction perpendicular to the ecliptic. Adjacent FOVs are offset for a total FOV of ~80X80 degrees. The two arrays are mounted back-to-back, looking in opposite directions, centered about 25 deg. from the average Parker Spiral field direction. STE is located just inboard of SWEA on the STEREO boom to clear its field of view and remain in shadow.

Additional information
STEREO/IMPACT Mission Site
NSSDC's Master Catalog

In-Situ Measurements of Particles and CME Transients (IMPACT) experiment on the STEREO A mission.

Acknowledgement

The STEREO IMPACT/STE Team

Contact
Role Person
1. Principal investigator Dr. Janet G. Luhmann Get XML
2. CoInvestigator Prof. Robert P. Lin Get XML
Release date
2010-03-18 14:25:33
Instrument type
Energetic Particle Instrument
Investigation name
In-Situ Measurements of Particles and CME Transients (IMPACT) Suprathermal Electron Telescope on STEREO A
Observatory
STEREO A Get XML

SPASE version 2.2.0

Observatory: STEREO A

Observatory ID
spase://SMWG/Observatory/STEREO-A Get XML
Name
STEREO A
Alternate name
STEREO Ahead
STEREO East
Solar Terrestrial Relations Observatory A
Description

The Solar-Terrestrial Relations Observatory (STEREO) mission includes two spacecraft respectively lagging (STEREO A) and leading (STEREO B) the Earth in heliocentric orbit around the Sun for remote 3-D imaging and radio observations of coronal mass ejections (CMEs). These events are responsible for large solar energetic particle events in interplanetary space and are the primary cause of major geomagnetic storms at Earth. The two spacecraft are launched to drift slowly away from the Earth in opposite directions at about 10 degrees per year for the lagging spacecraft and 20 degrees per year for the leading one. Optimal longitudinal separation of about sixty degrees is achieved after two years. Afterwards the separation gradually increases beyond the design lifetime of two years with the possibility of extended mission observations at larger angles. Science instruments selected for STEREO include the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) for extreme ultraviolet (EUV), white-light coronographic, and heliospheric imaging, the STEREO/WAVES (SWAVES) interplanetary radio burst tracker, the In situ Measurements of Particles and CME Transients (IMPACT) investigation for in-situ sampling the 3-D distribution and plasma characteristics of solar energetic particles and the interplanetary magnetic field, and the PLAsma and SupraThermal Ion and Composition (PLASTIC) experiment to measure elemental and charge composition of ambient and CME plasma ions. STEREO data recorded and stored onboard each spacecraft will be downlinked through the NASA Deep Space Network on a daily schedule. Real-time space weather data will be continuously transmitted through a separate beacon system to NASA and non-NASA receiving stations.

Additional information
STEREO Project Page

Project home page

NSSDC's Master Catalog

Information about the STEREO A mission

Contact
Role Person
1. Project scientist Mr. Michael L. Kaiser Get XML
Release date
2010-09-25 03:09:48
Prior ID
spase://vspo/observatory/139
Observatory group
STEREO Mission Get XML
Location
Region
Heliosphere.Remote1AU

SPASE version 2.2.0

Observatory: STEREO Mission

Observatory ID
spase://SMWG/Observatory/STEREO Get XML
Name
STEREO Mission
Description

The Solar-Terrestrial Relations Observatory (STEREO) mission includes two spacecraft respectively lagging (STEREO A) and leading (STEREO B) the Earth in heliocentric orbit around the Sun for remote 3-D imaging and radio observations of coronal mass ejections (CMEs). These events are responsible for large solar energetic particle events in interplanetary space and are the primary cause of major geomagnetic storms at Earth. The two spacecraft are launched to drift slowly away from the Earth in opposite directions at about 10 degrees per year for the lagging spacecraft and 20 degrees per year for the leading one. Optimal longitudinal separation of about sixty degrees is achieved after two years. Afterwards the separation gradually increases beyond the design lifetime of two years with the possibility of extended mission observations at larger angles. Science instruments selected for STEREO include the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) for extreme ultraviolet (EUV), white-light coronographic, and heliospheric imaging, the STEREO/WAVES (SWAVES) interplanetary radio burst tracker, the In situ Measurements of Particles and CME Transients (IMPACT) investigation for in-situ sampling the 3-D distribution and plasma characteristics of solar energetic particles and the interplanetary magnetic field, and the PLAsma and SupraThermal Ion and Composition (PLASTIC) experiment to measure elemental and charge composition of ambient and CME plasma ions. STEREO data recorded and stored onboard each spacecraft will be downlinked through the NASA Deep Space Network on a daily schedule. Real-time space weather data will be continuously transmitted through a separate beacon system to NASA and non-NASA receiving stations.

Additional information
STEREO Project Page

Project home page

Contact
Role Person
1. Project scientist Mr. Michael L. Kaiser Get XML
Release date
2009-05-20 20:00:12
Location
Region
Heliosphere.Remote1AU

SPASE version 2.2.0

Person: Dr. Janet G. Luhmann

Name
Dr. Janet G. Luhmann
Organization
University of California, Berkeley
Person ID
spase://SMWG/Person/Janet.G.Luhmann Get XML

SPASE version 2.2.0

Person: Ms. Tamara J. Kovalick

Name
Ms. Tamara J. Kovalick
Organization
GSFC-Code 672
Email
Tamara.J.Kovalick@nasa.gov
Phone
+1-301-286-9422
Person ID
spase://SMWG/Person/Tamara.J.Kovalick Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Mr. Robert M. Candey

Name
Mr. Robert M. Candey
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
robert.m.candey@nasa.gov
Phone
1-301-286-6707
Person ID
spase://SMWG/Person/Robert.M.Candey Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
+1 301 286 7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Prof. Robert P. Lin

Name
Prof. Robert P. Lin
Organization
University of California, Berkeley
Email
rlin@ssl.berkeley.edu
Phone
+1 510 642 1149
Person ID
spase://SMWG/Person/Robert.P.Lin Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Mr. Michael L. Kaiser

Name
Mr. Michael L. Kaiser
Organization
GSFC-Code 695
Person ID
spase://SMWG/Person/Michael.L.Kaiser Get XML

SPASE version 1.3.0

Repository: SPDF

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF Get XML
Name
SPDF
Description

Space Physics Data Facility

Additional information
SPDF

Space Physics Data Facility

Contact
Role Person
1. General contact Ms. Tamara J. Kovalick Get XML
2. Technical contact Mr. Robert M. Candey Get XML
3. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:02:30
Prior IDs
spase://vspo/repository/61
spase://SMWG/Repository/SPDF
Access URL