<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/icon_l2-5_fuv_night_00000000_v01.json (from all.xml) spase://NASA/NumericalData/ICON/FUV/L2/Night/PT12S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json FUV Short Wavelength Channel - 135.6 Altitude Profiles (night) <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description ICON_L2-5_FUV_Night <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source ICON explores the boundary between Earth and space - the ionosphere - to understand the physical connection between our world and the immediate space environment around us. Visit http://icon.ssl.berkeley.edu for more details. <_Description>Source: Master/CDFglobalAttributes/TEXT This is a data product from the NASA Ionospheric Connection Explorer mission, an Explorer launched at 21:59:45 EDT on October 10, 2019, from Cape Canaveral AFB in the USA. Guidelines for the use of this product are described in the ICON Rules of the Road (http://icon.ssl.berkeley.edu/Data). Responsibility for the mission science falls to the Principal Investigator, Dr. Thomas Immel at UC Berkeley: Immel, T.J., England, S.L., Mende, S.B. et al. Space Sci Rev (2018) 214: 13. https://doi.org/10.1007/s11214-017-0449-2 Responsibility for the validation of the L1 data products falls to the instrument lead investigators/scientists. * EUV: Dr. Eric Korpela : https://doi.org/10.1007/s11214-017-0384-2 * FUV: Dr. Harald Frey : https://doi.org/10.1007/s11214-017-0386-0 * MIGHTI: Dr. Christoph Englert : https://doi.org/10.1007/s11214-017-0358-4, and https://doi.org/10.1007/s11214-017-0374-4 * IVM: Dr. Roderick Heelis : https://doi.org/10.1007/s11214-017-0383-3 Responsibility for the validation of the L2 data products falls to those scientists responsible for those products. * Daytime O and N2 profiles: Dr. Andrew Stephan : https://doi.org/10.1007/s11214-018-0477-6 * Daytime (EUV) O+ profiles: Dr. Andrew Stephan : https://doi.org/10.1007/s11214-017-0385-1 * Nighttime (FUV) O+ profiles: Dr. Farzad Kamalabadi : https://doi.org/10.1007/s11214-018-0502-9 * Neutral Wind profiles: Dr. Jonathan Makela : https://doi.org/10.1007/s11214-017-0359-3 * Neutral Temperature profiles: Dr. Christoph Englert : https://doi.org/10.1007/s11214-017-0434-9 * Ion Velocity Measurements : Dr. Russell Stoneback : https://doi.org/10.1007/s11214-017-0383-3 Responsibility for Level 4 products falls to those scientists responsible for those products. * Hough Modes : Dr. Chihoko Yamashita : https://doi.org/10.1007/s11214-017-0401-5 * TIEGCM : Dr. Astrid Maute : https://doi.org/10.1007/s11214-017-0330-3 * SAMI3 : Dr. Joseph Huba : https://doi.org/10.1007/s11214-017-0415-z Pre-production versions of all above papers are available on the ICON website. http://icon.ssl.berkeley.edu/Publications Overall validation of the products is overseen by the ICON Project Scientist, Dr. Scott England. NASA oversight for all products is provided by the Mission Scientist, Dr. Jeffrey Klenzing. Users of these data should contact and acknowledge the Principal Investigator Dr. Immel and the party directly responsible for the data product (noted above) and acknowledge NASA funding for the collection of the data used in the research with the following statement : 'ICON is supported by' NASA's Explorers Program through contracts NNG12FA45C and NNG12FA42I. These data are openly available as described in the ICON Data Management Plan available on the ICON website (http://icon.ssl.berkeley.edu/Data). <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ http://icon.ssl.berkeley.edu/Instruments/FUV ICON FUV 12-second FUV SW altitude profiles <_Note>URL also in all.xml. Using master. Additional information on ICON https://icon.ssl.berkeley.edu/ ICON spacecraft Homepage. <_Note>Source: InformationURL.json The far ultra-violet Imager on the ICON mission https://doi.org/10.1007/s11214-017-0386-0 Space Science Reviews, 212(1-2), pp.655-696. DOI: 10.1007/s11214-017-0386-0 <_Note>Source: InformationURL.json ICON FUV O+ Altitude Profiles (DP 2.5) https://doi.org/10.48322/4vx2-1c67 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2019-11-16T00:00:10Z 2022-11-25T14:52:06Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Instrument/ICON/FUV ImageIntensity spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/icon/l2/l2-5_fuv_night In CDF via HTTP from CDAWeb icon_l2-5_fuv_night_%Y%m%d_v07r000.nc %Y ICON_L2-5_FUV_NIGHT CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/icon/l2/l2-5_fuv_night In CDF via HTTP from CDAWeb icon_l2-5_fuv_night_%Y%m%d_v07r000.nc %Y ICON_L2-5_FUV_NIGHT CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. ICON_L2-5_FUV_NIGHT CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=ICON_L2-5_FUV_NIGHT ICON_L2-5_FUV_NIGHT Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/ICON_L2-5_FUV_NIGHT/clientLibraryExample/ ICON_L2-5_FUV_NIGHT Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=ICON_L2-5_FUV_NIGHT ICON_L2-5_FUV_NIGHT Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=ICON_L2-5_FUV_NIGHT ICON_L2-5_FUV_NIGHT Web Service to this product using the HAPI interface. CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=ICON_L2-5_FUV_NIGHT&return=script ICON_L2-5_FUV_NIGHT Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: T. J. Immel at UC Berkeley>SSL HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=ICON_L2-5_FUV_NIGHT&format=gallery ICON_L2-5_FUV_NIGHT Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Ionospheric Connection Explorer (from all.xml/observatory/description/@short) Intensified Far Ultraviolet Imager (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Ionospheric Science (from Master/CDFglobalAttributes/Discipline) ICON (from Master/CDFglobalAttributes/Source_name) Ionospheric Connection Explorer (from Master/CDFglobalAttributes/Source_name) DP25 (from Master/CDFglobalAttributes/Data_type) Data Product 2.5: FUV Nighttime O+ profile (from Master/CDFglobalAttributes/Data_type) FUV (from all.xml/instrument/@ID) Earth.NearSurface.Atmosphere Earth.NearSurface.Ionosphere time_epoch Epoch_cdf CATDESC: 'time_inboard'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' seconds since 1970-01-01 00:00:00 Scalar Temporal FOV Celestial Azimuth ICON_L25_Celestial_Azimuth_Angle_Profile Master CDF CATDESC: 'FOV Celestial Azimuth'. Master CDF VAR_NOTES: 'Celestial azimuth angles associated with the brightness measurements. Each pixel of the instrument has its own azimuth angle associated with its line of sight.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees -999.0 135 6 FOV Celestial Zenith ICON_L25_Celestial_Zenith_Angle_Profile Master CDF CATDESC: 'FOV Celestial Zenith'. Master CDF VAR_NOTES: 'Celestial zenith angles associated with the brightness measurements. Each pixel of the instrument has its own zenith angle associated with its line of sight.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees -999.0 135 6 hmF2 ICON_L25_HMF2 Master CDF CATDESC: 'Altitudes of the peak O+ densities (stacked plot)'. Master CDF VAR_NOTES: 'The altitudes of the peak O+ densities that are obtained by performing cubic spline interpolation on each profile. SPDF changed this to stack_plot'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 6 hmF2 ICON_L25_HMF2_t Master CDF CATDESC: '---> same as above (as individual time series)'. Master CDF VAR_NOTES: 'The altitudes of the peak O+ densities that are obtained by performing cubic spline interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 6 hmF2 ICON_L25_HMF2_Error Master CDF CATDESC: 'Error in estimated altitudes of the peak O+ densities'. Master CDF VAR_NOTES: 'The propagated statistical errors from the O+ density profiles through the hmF2 estimation. Errors are propagated through the cubic spline interpolation using a Monte Carlo method. The details can be found in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].SPDF changed this to stack_plot'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 6 hmF2 ICON_L25_HMF2_Error_t Master CDF CATDESC: '---> same as above (as individual time series) '. Master CDF VAR_NOTES: 'The propagated statistical errors from the O+ density profiles through the hmF2 estimation. Errors are propagated through the cubic spline interpolation using a Monte Carlo method. The details can be found in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].SPDF changed this to stack_plot'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 6 NmF2 latitude ICON_L25_Latitude Master CDF CATDESC: 'Latitudes of the peak O+ densities in WGS84'. Master CDF VAR_NOTES: 'The geodetic latitudes of the peak O+ densities that are obtained by performing nearest neighbor interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees North -999.0 6 Local_Solar_Time ICON_L25_Local_Solar_Time Master CDF CATDESC: 'Local solar times at the retrieved peak O+ density locations'. Master CDF VAR_NOTES: 'Local solar times (0-24 hours decimal) at the locations of the retrieved peak O+ densities.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' hours -999.0 6 NmF2 longitude ICON_L25_Longitude Master CDF CATDESC: 'Longitudes of the peak O+ densities in WGS84'. Master CDF VAR_NOTES: 'The geodetic longitudes of the peak O+ densities that are obtained by performing nearest neighbor interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees East -999.0 6 NmF2 magnetic latitude ICON_L25_Magnetic_Latitude Master CDF CATDESC: 'Magnetic latitudes of the peak O+ densities'. Master CDF VAR_NOTES: 'The magnetic latitudes of the peak O+ densities that are obtained by performing nearest neighbor interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees North -999.0 6 NmF2 magnetic longitude ICON_L25_Magnetic_Longitude Master CDF CATDESC: 'Magnetic longitudes of the peak O+ densities'. Master CDF VAR_NOTES: 'The magnetic longitudes of the peak O+ densities that are obtained by performing nearest neighbor interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees East -999.0 6 NmF2 ICON_L25_NMF2 Master CDF CATDESC: 'Estimated peak O+ densities'. Master CDF VAR_NOTES: 'The peak O+ densities that are obtained by performing cubic spline interpolation on each profile.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 6 NmF2 ICON_L25_NMF2_Error Master CDF CATDESC: 'Error in estimated peak O+ densities'. Master CDF VAR_NOTES: 'The propagated statistical 1-sigma errors from the O+ density profiles through the NmF2 estimation . Errors are propagated through the cubic spline interpolation using a Monte Carlo method. The details can be found in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 6 Ne ICON_L25_O_Plus_Density Master CDF CATDESC: 'O+ density scans(non-smoothed, whole earth view)'. Master CDF VAR_NOTES: 'The O+ profiles are obtained from the estimated volume emission rate (VER) profiles assuming the emission arises from radiative recombination and mutual neutralization. The NRLMSISE00 model is used to characterize the oxygen density needed to model the mutual neutralization contribution.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 Ne ICON_L25_O_Plus_Density_sm_zo1 Master CDF CATDESC: 'O+ density scans (smoothed & closest view)'. Master CDF VAR_NOTES: 'The O+ profiles are obtained from the estimated volume emission rate (VER) profiles assuming the emission arises from radiative recombination and mutual neutralization. The NRLMSISE00 model is used to characterize the oxygen density needed to model the mutual neutralization contribution.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 Ne ICON_L25_O_Plus_Density_mapped_m Master CDF CATDESC: '---> same as above (movie: non-smoothed/whole earth)'. Master CDF VAR_NOTES: 'The O+ profiles are obtained from the estimated volume emission rate (VER) profiles assuming the emission arises from radiative recombination and mutual neutralization. The NRLMSISE00 model is used to characterize the oxygen density needed to model the mutual neutralization contribution.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 Ne ICON_L25_O_Plus_Density_mapped_m_sm_z1 Master CDF CATDESC: '---> same as above (movie: smoothed & closest view)'. Master CDF VAR_NOTES: 'The O+ profiles are obtained from the estimated volume emission rate (VER) profiles assuming the emission arises from radiative recombination and mutual neutralization. The NRLMSISE00 model is used to characterize the oxygen density needed to model the mutual neutralization contribution.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 Ne ICON_L25_O_Plus_Density_Error Master CDF CATDESC: 'Error in O+ density as a function of altitude (mapped)'. Master CDF VAR_NOTES: 'The statistical 1-sigma errors computed for the estimated O+ density profiles. Errors are obtainedby propagating the uncertainties in the estimated VER profiles through the O+ density profile calculations. Some other error sources are not included in this variable (such as the bias introduced by the regularization, or the errors due to the assumption that the VER is uniform between two adjacent tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 Ne ICON_L25_O_Plus_Density_Error_m Master CDF CATDESC: '---> movie of above'. Master CDF VAR_NOTES: 'The statistical 1-sigma errors computed for the estimated O+ density profiles. Errors are obtainedby propagating the uncertainties in the estimated VER profiles through the O+ density profile calculations. Some other error sources are not included in this variable (such as the bias introduced by the regularization, or the errors due to the assumption that the VER is uniform between two adjacent tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1/cm^3 -999.0 135 6 O+ altitude in WGS84 ICON_L25_O_Plus_Profile_Altitude Master CDF CATDESC: 'O+ altitude in WGS84 (mapped)'. Master CDF VAR_NOTES: 'The altitudes of each point in the O+ profile, evaluated using the WGS84 ellipsoid. These altitudes are one half sample above the tangent altitudes of each pixel's line of sight (consistent with the assumption implicit in the inversion that the emission rate is constant within the layer between tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 135 6 O+ altitude in WGS84 ICON_L25_O_Plus_Profile_Altitude_m Master CDF CATDESC: '---> movie of above'. Master CDF VAR_NOTES: 'The altitudes of each point in the O+ profile, evaluated using the WGS84 ellipsoid. These altitudes are one half sample above the tangent altitudes of each pixel's line of sight (consistent with the assumption implicit in the inversion that the emission rate is constant within the layer between tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 135 6 O+ latitude in WGS84 ICON_L25_O_Plus_Profile_Latitude Master CDF CATDESC: 'O+ latitude in WGS84'. Master CDF VAR_NOTES: 'The latitudes of each point in the O+ profile, evaluated using the WGS84 ellipsoid. It should be noted that while a single latitude value (the tangent latitude) is given for each point, the observation is inherently a horizontal average over many hundreds of kilometers.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees North -999.0 135 6 O+ longitude in WGS84 ICON_L25_O_Plus_Profile_Longitude Master CDF CATDESC: 'O+ longitude in WGS84'. Master CDF VAR_NOTES: 'The longitudes of each point in the O+ profile, evaluated using the WGS84 ellipsoid. It should be noted that while a single longitude value (the tangent longitude) is given for each point, the observation is inherently a horizontal average over many hundreds of kilometers.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees East -999.0 135 6 Spacecraft WGS84 altitude ICON_L25_Observatory_Position_Altitude Master CDF CATDESC: 'Spacecraft WGS84 altitude'. Master CDF VAR_NOTES: 'The geodetic altitudes of the spacecraft, evaluated using the WGS84 ellipsoid.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' km -999.0 Spacecraft WGS84 latitude ICON_L25_Observatory_Position_Latitude Master CDF CATDESC: 'Spacecraft WGS84 latitude'. Master CDF VAR_NOTES: 'The geodetic latitudes of the spacecraft, evaluated using the WGS84 ellipsoid.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees North -999.0 Spacecraft WGS84 longitude ICON_L25_Observatory_Position_Longitude Master CDF CATDESC: 'Spacecraft WGS84 longitude'. Master CDF VAR_NOTES: 'The geodetic longitudes of the spacecraft, evaluated using the WGS84 ellipsoid.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees East -999.0 ICON Orbit Number ICON_L25_Orbit_Number Master CDF CATDESC: 'ICON Orbit Number'. Master CDF VAR_NOTES: 'Integer orbit numbers for each measurement.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' -999 Quality ICON_L25_Quality Master CDF CATDESC: 'A quantification of the inversion quality, from 0 (Bad) to 1 (Good)'. Master CDF VAR_NOTES: 'While the intent is that the variable ICON_L25_O_Plus_Density_Error accurately characterizes the statistical error in the O+ density data, it is possible that systematic errors are present, or that the statistical error estimation is not accurate. If it is suspected that this is the case, the quality will be less than 1.0, which is determined based on the brightness values and other considerations. If the data are definitely unusable, the quality will be 0.0. Users should exercise caution when the quality is less than 1.0.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' 1=Good -999.0 6 Quality Flags ICON_L25_Quality_Flags Master CDF CATDESC: 'Provides description about the observed inversion quality'. Master CDF VAR_NOTES: 'This variable is intended to provide a description to the user why ICON_L25_Quality is less than 1, if that is the case. This is a binary coded integer whose binary representation indicates the quality conditions which were present during or before the inversion. Here are the quality conditions represented by each digit: 1: Error occurred during inversion. Makes the quality 0, no retrieval available. 2: No reliable quality L1 data available (see L1 quality flag). Makes the quality 0, no retrieval produced. 4: Very low input signal level (very low brightness). Makes the quality 0, retrieval available. 8: Low input signal level (low brightness). Makes the quality 0.5, retrieval available. 16: Unexpected hmF2 value. Makes the quality 0.5, retrieval available.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' -999 6 NmF2 solar zenith angle ICON_L25_Solar_Zenith_Angle Master CDF CATDESC: 'Solar zenith angles of NmF2 points'. Master CDF VAR_NOTES: 'Solar zenith angles of the retrieved NmF2 points.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' degrees -999.0 6 Start time ICON_L25_Start_Times Master CDF CATDESC: 'Start time of 12-second profile integration'. Master CDF VAR_NOTES: 'The start times of the exposures, in UT, with the format YYYY-MM-DD/HH:MM:SS.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' Stop time ICON_L25_Stop_Times Master CDF CATDESC: 'Stop time of 12-second profile integration'. Master CDF VAR_NOTES: 'The stop times of the exposures, in UT, with the format YYYY-MM-DD/HH:MM:SS.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' Center time ICON_L25_UTC_Time Master CDF CATDESC: 'Center time of 12-second profile integration'. Master CDF VAR_NOTES: 'The center times of the exposures. Different than Epoch, array elements are not in milliseconds, but they are strings of the date in UT, with the format YYYY-MM-DD HH:MM:SS.FFFZ'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' VER ICON_L25_VER Master CDF CATDESC: 'Volume Emission Rate (VER) of 135.6-nm emission (non-smoothed, whole earth view)'. Master CDF VAR_NOTES: 'The volume emission rates (VER) are estimated from the brightness profiles of the 135.6 nm emissions by solving a regularized linear (multiple scattering is negligible) inverse problem. In the inverse problem, atmosphere is divided into spherical shells with boundaries determined by the tangent altitudes, and VER is assumed to be uniform inside those shells. Solving the inverse problem, VER value for each shell is estimated. The details of the inversion are given in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6 VER ICON_L25_VER_map_m Master CDF CATDESC: '---> movie of above'. Master CDF VAR_NOTES: 'The volume emission rates (VER) are estimated from the brightness profiles of the 135.6 nm emissions by solving a regularized linear (multiple scattering is negligible) inverse problem. In the inverse problem, atmosphere is divided into spherical shells with boundaries determined by the tangent altitudes, and VER is assumed to be uniform inside those shells. Solving the inverse problem, VER value for each shell is estimated. The details of the inversion are given in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6 VER ICON_L25_VER_map_z1 Master CDF CATDESC: '---> same as above (smoothed & closest view)'. Master CDF VAR_NOTES: 'The volume emission rates (VER) are estimated from the brightness profiles of the 135.6 nm emissions by solving a regularized linear (multiple scattering is negligible) inverse problem. In the inverse problem, atmosphere is divided into spherical shells with boundaries determined by the tangent altitudes, and VER is assumed to be uniform inside those shells. Solving the inverse problem, VER value for each shell is estimated. The details of the inversion are given in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6 VER ICON_L25_VER_map_z1_movie Master CDF CATDESC: '---> movie of above: smoothed & closest view)'. Master CDF VAR_NOTES: 'The volume emission rates (VER) are estimated from the brightness profiles of the 135.6 nm emissions by solving a regularized linear (multiple scattering is negligible) inverse problem. In the inverse problem, atmosphere is divided into spherical shells with boundaries determined by the tangent altitudes, and VER is assumed to be uniform inside those shells. Solving the inverse problem, VER value for each shell is estimated. The details of the inversion are given in Kamalabadi et al. [2018, doi: 10.1007/s11214-018-0502-9].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6 VER ICON_L25_VER_Error Master CDF CATDESC: 'Error in VER of 135.6-nm emission as a function of altitude'. Master CDF VAR_NOTES: 'The statistical 1-sigma errors computed for the estimated VER values. Errors are obtained by propagating the uncertainties in the given brightness profiles (provided in the L1 input file) through the VER estimation process. Some other error sources are not included in this variable (such as the bias introduced by the regularization, or the errors due to the assumption that the VER is uniform between two adjacent tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6 VER ICON_L25_VER_Error_m Master CDF CATDESC: '---> same as above (movie)'. Master CDF VAR_NOTES: 'The statistical 1-sigma errors computed for the estimated VER values. Errors are obtained by propagating the uncertainties in the given brightness profiles (provided in the L1 input file) through the VER estimation process. Some other error sources are not included in this variable (such as the bias introduced by the regularization, or the errors due to the assumption that the VER is uniform between two adjacent tangent altitudes).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch_cdf.' ph/cm^3/s -999.0 135 6