HPDE.io

IBEX-Hi digital maps every 6 months

ResourceID
spase://NASA/NumericalData/IBEX/Hi/Maps-TXT

Description

As of this writing (11/5/2010), this product
had been issued by the IBEX team in two releases.
Release 1 IBEX-Hi map data are superseded by Release 2
data which are more time-extensive (12 months vs. 6 months)
and are richer in content. While Release 1 IBEX-Hi map data
and their documentation remain accessible at
ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/ibex/hi/maps/digital_data/release_1/
and
ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/ibex/hi/maps/images/release_1/,
this description supports the retrieval and use of Release 2 data only.

The Release_2 IBEX-Hi map data contain all-sky 6 deg x 6 deg
resolution maps in J2000 ecliptic coordinates of energetic
neutral fluxes reaching the near-Earth IBEX spacecraft from
the distant heliosphere and heliosheath. Maps
are in both a spacecraft frame and, via Compton-Getting
corrections, a heliospheric frame. Basic maps are each
accumulated over 6-months duration, so far for epochs 1
(12/2008-06/2009) and 2 (06/2009-12/2009). Maps are available
for five of the energy bands of IBEX-Hi (0.52-0.95, 0.84-1.55,
1.36-2.50, 1.99-3.75, 3.13-6.00 keV) and, for the heliospheric
frame only, also for six monoenergetic points (0.71, 1.11, 1.74,
2.73, 3.0, 4.29 keV). In addition, monoenergetic maps are available
as summed over the data collected during epochs 1 and 2 combined.
All maps are available in digital text format and in PNG image format
(considered as separate data sets within VEPO).

Given that VHO/VEPO typically displays clickable granule (file)
names for any given specification of data product and time span,
and given that IBEX-Hi digital maps and PNG-formatted display
maps are each considered single data products, a request for data
from either product will yield .GE.20 names of files containing data
spanning or within the requested time span. For IBEX, the names
shown by VHO/VEPO actually have the form subdirectory/filename.
The subdirectories are named map1, map1cg, map2, map2cg, and
map-combined. Maps involving "1" ("2") are from the first (second)
6-month epoch, while "combined" means composed of data taken
during epochs 1 and 2. Maps involving (not involving) "cg" means
heliospheric frame (spacecraft frame). In the first four subdirectories,
file names are of the forms ha60.hide-trp-flux100-hi-N-flux.ext and
ha60.hide-trp-mono_80-P.PP-flux.ext, where "ext" is "png" or "txt"
according to which product is requested, N is the energy step
number for the IBEX-Hi instrument (2-6), P.PP is the energy level,
in keV, of a monoenergetic flux. Files in the "combined"
subdirectories are named "combined-P.PP-flux.ext, where P.PP
has the same meaning as above.

In addition to the flux maps to which VEPO provides access,
several map files whose data support the determination of the
fluxes are also available in the underlying nssdcftp directories
and are described by aareadme files there (and by IBEX web pages
at SWRI: http://ibex.swri.edu/ibexpublicdata/Data_Release_2/)

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/IBEX/Hi/Maps-TXT
ResourceHeader
ResourceName
IBEX-Hi digital maps every 6 months
ReleaseDate
2020-07-07 21:14:37Z
Description

As of this writing (11/5/2010), this product
had been issued by the IBEX team in two releases.
Release 1 IBEX-Hi map data are superseded by Release 2
data which are more time-extensive (12 months vs. 6 months)
and are richer in content. While Release 1 IBEX-Hi map data
and their documentation remain accessible at
ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/ibex/hi/maps/digital_data/release_1/
and
ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/ibex/hi/maps/images/release_1/,
this description supports the retrieval and use of Release 2 data only.

The Release_2 IBEX-Hi map data contain all-sky 6 deg x 6 deg
resolution maps in J2000 ecliptic coordinates of energetic
neutral fluxes reaching the near-Earth IBEX spacecraft from
the distant heliosphere and heliosheath. Maps
are in both a spacecraft frame and, via Compton-Getting
corrections, a heliospheric frame. Basic maps are each
accumulated over 6-months duration, so far for epochs 1
(12/2008-06/2009) and 2 (06/2009-12/2009). Maps are available
for five of the energy bands of IBEX-Hi (0.52-0.95, 0.84-1.55,
1.36-2.50, 1.99-3.75, 3.13-6.00 keV) and, for the heliospheric
frame only, also for six monoenergetic points (0.71, 1.11, 1.74,
2.73, 3.0, 4.29 keV). In addition, monoenergetic maps are available
as summed over the data collected during epochs 1 and 2 combined.
All maps are available in digital text format and in PNG image format
(considered as separate data sets within VEPO).

Given that VHO/VEPO typically displays clickable granule (file)
names for any given specification of data product and time span,
and given that IBEX-Hi digital maps and PNG-formatted display
maps are each considered single data products, a request for data
from either product will yield .GE.20 names of files containing data
spanning or within the requested time span. For IBEX, the names
shown by VHO/VEPO actually have the form subdirectory/filename.
The subdirectories are named map1, map1cg, map2, map2cg, and
map-combined. Maps involving "1" ("2") are from the first (second)
6-month epoch, while "combined" means composed of data taken
during epochs 1 and 2. Maps involving (not involving) "cg" means
heliospheric frame (spacecraft frame). In the first four subdirectories,
file names are of the forms ha60.hide-trp-flux100-hi-N-flux.ext and
ha60.hide-trp-mono_80-P.PP-flux.ext, where "ext" is "png" or "txt"
according to which product is requested, N is the energy step
number for the IBEX-Hi instrument (2-6), P.PP is the energy level,
in keV, of a monoenergetic flux. Files in the "combined"
subdirectories are named "combined-P.PP-flux.ext, where P.PP
has the same meaning as above.

In addition to the flux maps to which VEPO provides access,
several map files whose data support the determination of the
fluxes are also available in the underlying nssdcftp directories
and are described by aareadme files there (and by IBEX web pages
at SWRI: http://ibex.swri.edu/ibexpublicdata/Data_Release_2/)

Acknowledgement
The IBEX Team
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/David.J.McComas
InformationURL
InformationURL
PriorIDs
spase://VEPO/NumericalData/IBEX/Hi/Maps-TXT
spase://VSPO/NumericalData/IBEX/Hi/Maps-TXT
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

Directory with energy-range-specific subdirectories

AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
Text
DataExtent
Quantity
800
Units
KB
Per
P1Y
Acknowledgement
The IBEX Team
InstrumentIDs
MeasurementType
NeutralAtomImages
TemporalDescription
TimeSpan
StartDate
2008-12-25 00:00:00
RelativeStopDate
P9M
Note
Data are made public in 6-month batches, with a modest delay after the end of each 6 month interval.
Cadence
P6M
ObservedRegion
Heliosphere.Heliosheath
Parameter #1
Name
ENA fluxes
Description

Array of neutral hydrogen fluxes

Cadence
P6M
Units
number/sec-cm**2-ster-keV
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
J2000
Structure
Size
60 30
Description

The array has 30 rows and 60 columns.
Row 1 (30) is for the north (south) ecliptic polar region. The
columns start at zero ecliptic longitude and step through to
ecliptic longitude 360. The first and last columns have the
same values.

Particle
ParticleType
Atom
ParticleQuantity
NumberFlux
AtomicNumber
1
EnergyRange
Low
0.52
High
6.00
Units
keV