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ICON Extreme Ultraviolet Night Time Oplus Images

(2026). ICON Extreme Ultraviolet Night Time Oplus Images . [Data set]. Space Physics Data Facility.

ResourceID
spase://SMWG/NumericalData/ICON/EUV/L3/Climatology-Night-Oplus/P10D

Description
ICON Night time Oplus climatology. The L3 FUV Night Limb files are produced from the L2.5 ICON FUV Night files. All variables within the file are described in their Var_notes attribute. The data are identified in one of 2 var_types: data – which contains the primary data product and support data – which contains parameters used in the retrieval such as geometry etc. that may also be useful in any analysis of this data. This single file spans the whole mission

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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Details

Version:2.7.2

NumericalData

ResourceID
spase://SMWG/NumericalData/ICON/EUV/L3/Climatology-Night-Oplus/P10D
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
ICON Extreme Ultraviolet Night Time Oplus Images
AlternateName
EUV Nighttime Oplus Images
ReleaseDate
2026-08-05 00:00:00Z
RevisionHistory
RevisionEvent
ReleaseDate
2026-08-05 00:00:00Z
Note
First release. JMW.
Description
ICON Night time Oplus climatology. The L3 FUV Night Limb files are produced from the L2.5 ICON FUV Night files. All variables within the file are described in their Var_notes attribute. The data are identified in one of 2 var_types: data – which contains the primary data product and support data – which contains parameters used in the retrieval such as geometry etc. that may also be useful in any analysis of this data. This single file spans the whole mission
Acknowledgement
National Aeronautics and Space Administration; Dr. Farzad Kamalabadi; Dr. Thomas J. Immel
PublicationInfo
Authors
Edelstein, J.
PublicationDate
2026-06-16 00:00:00
PublishedBy
Space Physics Data Facility
Funding
Agency
National Aeronautics and Space Administration
Project
Explorers Program
AwardNumber
NNG12FA44C
Funding
Agency
National Aeronautics and Space Administration
Project
Explorers Program
AwardNumber
contracts NNG12FA42I
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/Farzad.Kamalabadi
2. MetadataContact spase://SMWG/Person/James.M.Weygand

InformationURL
Name
Additional information on ICON
URL
https://icon.ssl.berkeley.edu/
Description
ICON spacecraft Homepage.
InformationURL
Name
Design and Performance of the ICON EUV Spectrograph
URL
https://doi.org/10.1007/s11214-017-0384-2
Description
Space Science Reviews, 212(1-2), pp.631-643. DOI: 10.1007/s11214-017-0384-2
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
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
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
ICON_L3-3_Climatology-Night-Oplus
Description
Web Service to this product using the HAPI interface.
Format
NetCDF
Acknowledgement
National Aeronautics and Space Administration; Dr. Roderick A. Heelis; Dr. Thomas Immel.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
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
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/icon/l3/climatology/
ProductKey
ICON_L3-3_Climatology-Night-Oplus
Description
Access to Data in NetCDF Format via https from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=ICON_L3-3_Climatology-Daytime-Oplus&index=sp_phys
ProductKey
ICON_L3-3_Climatology-Night-Oplus
Description
Access to ASCII, NetCDF, CDF, and Plots via NASA/GSFC CDAWeb
Format
NetCDF
Encoding
None
Acknowledgement
National Aeronautics and Space Administration; Dr. Roderick A. Heelis; Dr. Thomas Immel.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/ICON_L3-3_Climatology-Night-Oplus/clientLibraryExample/
Style
WebService
ProductKey
ICON_L3-3_Climatology-Night-Oplus
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
National Aeronautics and Space Administration; Dr. Roderick A. Heelis; Dr. Thomas Immel.
ProcessingLevel
Calibrated
ProviderName
ICON EUV team
InstrumentIDs
spase://SMWG/Instrument/ICON/EUV
MeasurementType
ImageIntensity
TemporalDescription
TimeSpan
StartDate
2019-12-09 19:01:48Z
StopDate
2022-11-03 23:27:18Z
Cadence
PT1800S
ObservedRegion
Earth.NearSurface.Atmosphere
ObservedRegion
Earth.NearSurface.Ionosphere
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description
Time corresponding to the middle of each 48 day average, in milliseconds since Jan 1 1970.
Cadence
P10D
Units
ms
ValidMin
0
ValidMax
6000000000000
FillValue
-999
Support
Qualifier
Magnitude
SupportQuantity
Temporal
Parameter #2
Name
48 day bins
ParameterKey
ICON_L33_Included_Dates
Description
Dates used in each 48 day bin, in string format, in the format: 2017-05-27.
Cadence
P10D
FillValue
-999
Support
Qualifier
Magnitude
SupportQuantity
Temporal
Parameter #3
Name
Binned O+ Density
ParameterKey
ICON_L33_OPlus
Description
Mean value of FUV nighttime O+ Density, taken over all good quality L2 datapoints in a 48-day time-span, as a function of altitude,longitude, latitude, time. Derived from ICON_L24_Disk_ON2.
Cadence
P10D
Units
1/cm^3
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Particle
ParticleType
Ion
Qualifier
Average
ParticleQuantity
NumberDensity
AtomicNumber
8
Parameter #4
Name
Binned HMF2
ParameterKey
ICON_L33_HMF2
Description
Binned HMF2. Mean value of HMF2, taken over all good quality L2 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L25_HMF2..
Cadence
P10D
Units
km
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Support
Qualifier
Scalar
SupportQuantity
Positional
Parameter #5
Name
Binned NMF2
ParameterKey
ICON_L33_NMF2
Description
Electron density at the peak of the F2 layer from retrieval. Mean value of NMF2, taken over all good quality L2 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L25_NMF2.
Cadence
P10D
Units
1/cm^3
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Particle
ParticleType
Electron
Qualifier
Average
ParticleQuantity
NumberDensity
Parameter #6
Name
Number of data points
ParameterKey
ICON_L33_Datapoints
Description
Number of data points in each 48 day average, as a function of altitude, longitude, latitude, time.
Cadence
P10D
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Support
Qualifier
Scalar
SupportQuantity
Other
Parameter #7
Name
Sigma O+ Density
ParameterKey
ICON_L33_Sigma_OPlus
Description
1 standard deviation of the good O+ values used to compute the mean, as a function of altitude, longitude, latitude, time.
Cadence
P10D
Units
1/cm^3
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Particle
ParticleType
Ion
Qualifier
StandardDeviation
ParticleQuantity
NumberDensity
AtomicNumber
8
Parameter #8
Name
Sigma HMF2
ParameterKey
ICON_L33_Sigma_HMF2
Description
1 standard deviation of the good column HMF2 values used to compute the mean, as a function of longitude, latitude, time.
Cadence
P10D
Units
km
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Support
Qualifier
StandardDeviation
SupportQuantity
Positional
Parameter #9
Name
Sigma HMF2
ParameterKey
ICON_L33_Sigma_NMF2
Description
Electron density at the peak of the F2 layer from retrieval. 1 standard deviation of the good column NMF2 values used to compute the mean, as a function of longitude, latitude, time.
Cadence
P10D
Units
1/cm^3
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
-999
Particle
ParticleType
Electron
Qualifier
StandardDeviation
ParticleQuantity
NumberDensity
Parameter #10
Name
Binned Altitude Grid
ParameterKey
ICON_L33_Altitude
Description
Altitude of the O+ data, binned in 4 km intervals, altitude +/- 2.0 km. Derived from ICON_L25_O+_Profile_Altitude.
Cadence
P10D
Units
km
ValidMin
154
ValidMax
510
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #11
Name
Local Time Bin
ParameterKey
ICON_L33_LocalTime
Description
Local time binned in 0.5 hour intervals, local time +/- 0.25 hours.
Cadence
P10D
Units
hours
ValidMin
0.25
ValidMax
23.75
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #12
Name
Latitude Bin
ParameterKey
ICON_L33_Latitude
Description
Latitude of the O+ data, binned in 5 degree intervals, latitude +/- 2.5 degrees. Derived from ICON_L25_O+_Profile_Latitude.
Cadence
P10D
Units
degrees
ValidMin
-10
ValidMax
50
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #13
Name
Longitude Bin
ParameterKey
ICON_L33_Longitude
Description
Longitude of the O+ data, binned in 15 degree intervals, longitude +/- 7.5 degrees. Derived from ICON_L25_O+_Profile_Longitude.
Cadence
P10D
Units
degrees
ValidMin
0
ValidMax
360
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
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Last Updated: 2026-08-05