2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalOutput/ICON/HME/L4/V3/PT24H NASA NumericalOutput Ionospheric Connection Explorer (ICON) Hough Mode Extension (TIEGCM) Model Product Version 3 ICON HME Model Products https://doi.org/10.48322/pftv-3388 2026-02-02T13:10:56Z 2025-02-05T00:00:00Z Created Numerical metadata with DOI. JMW 2025-02-06T00:00:00Z Revised Amplitude metadata. JMW 2025-03-10T00:00:00Z Update discription at ICON request. JMW 2026-02-02T13:10:56Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB This data product contains the lower boundary of TIE-GCM including zonal wind, meridional wind, temperature, and geopotential height. Tidal structures obtained from ICON-MIGHTI observations are fitted to Hough Mode Extension (HME). Global tidal perturbation field are reconstructed using ICON HME at 97 km. ICON-MIGHTI winds and temperature from 94 km to 102 km in the latitude range of 10°S-40°N and SABER in the latitude range of 5°S-50°S are used to fit to the HME. This product used the Version 5 MIGHTI winds data and Version 5 MIGHTI temperature data are used for V03 HME product. To cover all local time for tidal analysis, ICON-MIGHTI and SABER data are accumulated with a 45-day window and a 60-day window, respectively. HME has been widely used and tested before, and detailed HME methodologies are summarized in Forbes et al. [1994] and Oberheide et al. [2011]. HME for ICON and application to TIEGCM simulation is summarized in Forbes et al. [2017] and Maute [2017], respectively, and sensitivity study of HME fitting to the data coverage can be found in Cullens et al. [2020]. These metadata include the model output data. National Aeronautics and Space Administration; Dr. Astrid Maute; Dr. Thomas J. Immel; Dr. Chihoko Cullens Immel, T.J., Maute, A. Cullens, C. 2025-01-01T00:00:00 NASA Space Physics Data Facility National Aeronautics and Space Administration Explorers Program contracts NNG12FA45C National Aeronautics and Space Administration Explorers Program contracts NNG12FA42I spase://SMWG/Person/Thomas.J.Immel PrincipalInvestigator spase://SMWG/Person/Astrid.Maute CoInvestigator spase://SMWG/Person/Chihoko.Cullens CoInvestigator spase://SMWG/Person/James.M.Weygand MetadataContact Additional information on ICON https://icon.ssl.berkeley.edu/ ICON spacecraft Homepage. On the Specification of Upward-Propagating Tides for ICON Science InvestigationsN https://doi.org/10.1007/s11214-017-0401-5 Science Reviews, 212, 697-713, 2017 spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/icon/l4/hme/ Access to ICON HME L4 data at the Space Physics Data Facility (SPDF) NetCDF spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products HTTPS from CDAWeb https://cdaweb.gsfc.nasa.gov/pub/data/icon/l4/hme/ Access to ICON HME L4 data at Coordinated Data Analysis Web (CDAWeb) Data Services NetCDF ValueAdded ICON HME team ValueAdded 3 Waves 2019-12-16T00:00:00Z 2022-08-08T23:59:59Z PT60M Earth.NearSurface.Atmosphere Earth.NearSurface.AuroralRegion Earth.NearSurface.EquatorialRegion Earth.NearSurface.Ionosphere Geographic Latitude Latitude Geographic latitude (-south, +north). degrees -90 +90 -999 Positional Altitude Altitude Altitude. km -999 Positional Missing Data MissingData 1: Data is Missing, 0: Data is used for HME calculation. -999 DataQuality Diurnal Tidal Temperature Westward Propagating Wavenumber 2 DAMP_W2_T Diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 2. K -999 Atom Amplitude Temperature Diurnal Tidal Temperature Westward Propagating Wavenumber 1 DAMP_W1_T Diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 1. K -999 Atom Amplitude Temperature Diurnal Tidal Temperature Wavenumber 0 DAMP_S0_T Diurnal tidal temperature amplitudes. Amplitude of wavenumber 0. K -999 Atom Amplitude Temperature Diurnal Tidal Temperature Eastward Propagating Wavenumber 1 DAMP_E1_T Diurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 1. K -999 Atom Amplitude Temperature Diurnal Tidal Temperature Eastward Propagating Wavenumber 2 DAMP_E2_T Diurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 2. K -999 Atom Amplitude Temperature Diurnal Tidal Temperature Eastward Propagating Wavenumber 3 DAMP_E3_T Diurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 3. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Westward Propagating Wavenumber 4 SDAMP_W4_T Semi-diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 4. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Westward Propagating Wavenumber 3 SDAMP_W3_T Semi-diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 3. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Westward Propagating Wavenumber 2 SDAMP_W2_T Semi-diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 2. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Westward Propagating Wavenumber 1 SDAMP_W1_T Semi-diurnal tidal temperature amplitudes. Amplitude of westward propagating wavenumber 1. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Wavenumber 0 SDAMP_S0_T Semi-diurnal tidal temperature amplitudes. Amplitude of wavenumber 0. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Eastward Propagating Wavenumber 1 SDAMP_E1_T Semi-diurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 1. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Eastward Propagating Wavenumber 2 SDAMP_E2_T Semi-iurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 2. K -999 Atom Amplitude Temperature Semi-diurnal Tidal Temperature Eastward Propagating Wavenumber 3 SDAMP_E3_T Semi-diurnal tidal temperature amplitudes. Amplitude of eastward propagating wavenumber 3. K -999 Atom Amplitude Temperature Diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 2 DAMP_W2_U Diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 1 DAMP_W1_U Diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Diurnal Tidal Zonal Wind Amplitude Wavenumber 0 DAMP_S0_U Diurnal tidal zonal wind amplitudes. Amplitude of wavenumber 0. m/s -999 Atom Amplitude Velocity Diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 1 DAMP_E1_U Diurnal tidal zonal wind amplitudes. Amplitude of eastward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 2 DAMP_E2_U Diurnal tidal zonal wind amplitudes. Amplitude of eastward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 3 DAMP_E3_U Diurnal tidal zonal wind amplitudes. Amplitude of eastward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 4 SDAMP_W4_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 4. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 3 SDAMP_W3_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 2 SDAMP_W2_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Westward Propagating Wavenumber 1 SDAMP_W1_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of westward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Wavenumber 0 SDAMP_S0_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of wavenumber 0. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 1 SDAMP_E1_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of eeastward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 2 SDAMP_E2_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of eeastward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Zonal Wind Amplitude Eastward Propagating Wavenumber 3 SDAMP_E3_U Semi-diurnal tidal zonal wind amplitudes. Amplitude of eeastward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 2 DAMP_W2_V Diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 1 DAMP_W1_V Diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Wavenumber 0 SDAMP_S0_V Diurnal tidal meridional wind amplitudes. Amplitude of wavenumber 0. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 1 DAMP_E1_V Diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 2 DAMP_E2_V Diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 3 DAMP_E3_V Diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 4 SDAMP_W4_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 4. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 3 SDAMP_W3_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 2 SDAMP_W2_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Westward Propagating Wavenumber 1 SDAMP_W1_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of westward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Wavenumber 0 SDAMP_S0_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of wavenumber 0. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 1 SDAMP_E1_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 1. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 2 SDAMP_E2_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 2. m/s -999 Atom Amplitude Velocity Semi-diurnal Tidal Meridional Wind Amplitude Eastward Propagating Wavenumber 3 SDAMP_E3_V Semi-diurnal tidal meridional wind amplitudes. Amplitude of eastward propagating wavenumber 3. m/s -999 Atom Amplitude Velocity Phase of Westward Propagating Wavenumber 2 Dirunal Zonal Wind Tides DPHASE_W2_U Phase of westward propagating wavenumber 2 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 1 Dirunal Zonal Wind Tides DPHASE_W1_U Phase of westward propagating wavenumber 1 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Wavenumber 0 Dirunal Zonal Wind Tides DPHASE_S0_U Phase of wavenumber 0 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 1 Dirunal Zonal Wind Tides DPHASE_E1_U Phase of eastward propagating wavenumber 1 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 2 Dirunal Zonal Wind Tides DPHASE_E2_U Phase of eastward propagating wavenumber 2 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 3 Dirunal Zonal Wind Tides DPHASE_E3_U Phase of eastward propagating wavenumber 3 dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 4 Semi-dirunal Zonal Wind Tides SDPHASE_W4_U Phase of westward propagating wavenumber 4 semi-dirunal zonal wind tides.The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 3 Semi-dirunal Zonal Wind Tides SDPHASE_W3_U Phase of westward propagating wavenumber 3 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 2 Semi-dirunal Zonal Wind Tides SDPHASE_W2_U Phase of westward propagating wavenumber 2 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 1 Semi-dirunal Zonal Wind Tides SDPHASE_W1_U Phase of westward propagating wavenumber 1 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Wavenumber 0 Semi-dirunal Zonal Wind Tides SDPHASE_S0_U Phase of wavenumber 0 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 1 Semi-dirunal Zonal Wind Tides SDPHASE_E1_U Phase of eastward propagating wavenumber 1 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 2 Semi-dirunal Zonal Wind Tides SDPHASE_E2_U Phase of eastward propagating wavenumber 2 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 3 Semi-dirunal Zonal Wind Tides SDPHASE_E3_U Phase of eastward propagating wavenumber 3 semi-dirunal zonal wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 2 Dirunal Meridional Wind Tides DPHASE_W2_V Phase of westward propagating wavenumber 2 dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 1 Dirunal Meridional Wind Tides DPHASE_W1_V Phase of westward propagating wavenumber 1 dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Wavenumber 0 Dirunal Meridional Wind Tides DPHASE_S0_U Phase of wavenumber 0 dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 1 Dirunal Meridional Wind Tides DPHASE_E1_V Phase of eastward propagating wavenumber 1 dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 2 Dirunal Meridional Wind Tides DPHASE_E2_V Phase of eastward propagating wavenumber 2 dirunal meridional wind tides.The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 3 Dirunal Meridional Wind Tides DPHASE_E3_V Phase of eastward propagating wavenumber 3 dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 4 Semi-dirunal Meridional Wind Tides SDPHASE_W4_V Phase of westward propagating wavenumber 4 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 3 Semi-dirunal Meridional Wind Tides SDPHASE_W3_V Phase of westward propagating wavenumber 3 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 2 Semi-dirunal Meridional Wind Tides SDPHASE_W2_V Phase of westward propagating wavenumber 2 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Westward Propagating Wavenumber 1 Semi-dirunal Meridional Wind Tides SDPHASE_W1_V Phase of westward propagating wavenumber 1 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Wavenumber 0 Semi-dirunal Meridional Wind Tides SDPHASE_S0_V Phase of wavenumber 0 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 1 Semi-dirunal Meridional Wind Tides SDPHASE_E1_V Phase of eastward propagating wavenumber 1 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 2 Semi-dirunal Meridional Wind Tides SDPHASE_E2_V Phase of eastward propagating wavenumber 2 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal Phase of Eastward Propagating Wavenumber 3 Semi-dirunal Meridional Wind Tides SDPHASE_E3_V Phase of eastward propagating wavenumber 3 semi-dirunal meridional wind tides. The “hours” in phase measurements actually are in UT. The phase is defined as the time when the maximum is observed at 0 longitude. hour -999 Temporal