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STPSat-1 SHIMMER PMC Data
var authors='Englert, Christoph';
document.write(authors);
(2025).
STPSat-1 SHIMMER PMC Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/pj0d-rz59. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/STPSat1/SHIMMER/PMC/PT1D
Description
This dataset contains Polar Mesospheric Clouds (PMCs) observed by the Spatial Heterodyne Imager for MEsospheric Radicals (SHIMMER) onboard the STPSat-1 satellite. The PMC (primarily a summertime phenomenon) data are derived from over a million limb images during its three-year mission, minus September through November for each year. Each file has a five-line header that includes: (1) Year and day of the year (DOY), (2) Total number of PMC detected on that day, (3) The number of PMC detected when using a phase function of the ice particles, (4) Hydroxyl (OH) radiances at 80 and 87 km, and (5) Labels of the output: Year, DOY, GMT, LAT, LON, LST, SSA, SZA, PMCRAW (1 for PMC detection and 0 for none), PMCMIE (detection above the applied threshold), BGRND (average Rayleigh scattered background signal in kR/nm), BRT (background corrected peak brightness in kR/nm), THRRAW (threshold used to identify a PMC), THRPHS (threshold used to detect PMC in kR/nm), PK (altitude of the peak emission in km), OH80 (OH solar resonance fluorescence radiance detected at 80 km in kR), OHE80 (uncertainty for the 80 km OH radiance in kR), OH87 (OH solar resonance fluorescence radiance detected at 87 km in kR), and OHE87 (uncertainty for the 87 km OH radiance in kR).
In addition to the PMC data, there are PMC maps and summary figures for each year of operations. The first figure for each year is map_YYYY.ps, where YYY represents the year. This shows the geographic location of each detected PMC, without regard to when it was detected. Also indicated on the maps are the total number of images tested for a PMC as well as the total number of PMC detected for each year. The second figure (summary_YYYY.ps) shows a time series of some important results of the analysis: the number of SHIMMER images tested, a time series of PMC detections for the year, a time series of thresholded PMC detections, and a time series of PMC altitudes defined as the altitude of peak brightness.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/STPSat1/SHIMMER/PMC/PT1D
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
STPSat-1 SHIMMER PMC Data
DOI
https://doi.org/10.48322/pj0d-rz59
ReleaseDate
2026-02-16 14:46:10Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:15:23Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:56Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:31:41Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-02-16 14:46:10Z
Note
Added DOI. TLK
Description
This dataset contains Polar Mesospheric Clouds (PMCs) observed by the Spatial Heterodyne Imager for MEsospheric Radicals (SHIMMER) onboard the STPSat-1 satellite. The PMC (primarily a summertime phenomenon) data are derived from over a million limb images during its three-year mission, minus September through November for each year. Each file has a five-line header that includes: (1) Year and day of the year (DOY), (2) Total number of PMC detected on that day, (3) The number of PMC detected when using a phase function of the ice particles, (4) Hydroxyl (OH) radiances at 80 and 87 km, and (5) Labels of the output: Year, DOY, GMT, LAT, LON, LST, SSA, SZA, PMCRAW (1 for PMC detection and 0 for none), PMCMIE (detection above the applied threshold), BGRND (average Rayleigh scattered background signal in kR/nm), BRT (background corrected peak brightness in kR/nm), THRRAW (threshold used to identify a PMC), THRPHS (threshold used to detect PMC in kR/nm), PK (altitude of the peak emission in km), OH80 (OH solar resonance fluorescence radiance detected at 80 km in kR), OHE80 (uncertainty for the 80 km OH radiance in kR), OH87 (OH solar resonance fluorescence radiance detected at 87 km in kR), and OHE87 (uncertainty for the 87 km OH radiance in kR).
In addition to the PMC data, there are PMC maps and summary figures for each year of operations. The first figure for each year is map_YYYY.ps, where YYY represents the year. This shows the geographic location of each detected PMC, without regard to when it was detected. Also indicated on the maps are the total number of images tested for a PMC as well as the total number of PMC detected for each year. The second figure (summary_YYYY.ps) shows a time series of some important results of the analysis: the number of SHIMMER images tested, a time series of PMC detections for the year, a time series of thresholded PMC detections, and a time series of PMC altitudes defined as the altitude of peak brightness.
PublicationInfo
Authors
Englert, Christoph
PublicationDate
2025-11-14 16:02:56Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Christoph.Englert
InformationURL
Name
Users Guide to Data from the Spatial Heterodyne Imager for MEsospheric Radicals (SHIMMER)
URL
https://spdf.gsfc.nasa.gov/pub/data/shimmer/shimmer_data_manual.pdf
PriorIDs
spase://VSPO/NumericalData/STPSat1/SHIMMER/PMC/PT1D
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/shimmer/pmc_data/
Description
In ASCII via ftp at SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/shimmer/pmc_data/
Description
In ASCII via HTTP at SPDF
Format
Text
Acknowledgement
Please acknowledge the PI and NASA GSFC SPDF.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/STPSat1/SHIMMER
MeasurementType
Radiance
TemporalDescription
TimeSpan
StartDate
2007-04-05 00:00:00
StopDate
2009-09-24 00:00:00
Cadence
PT24H
ObservedRegion
Earth.NearSurface.Mesosphere