The physics-based TIE-GCM OTHITACS 2007

Name: The physics-based TIE-GCM OTHITACS 2007
Published: 2023-04-21
License: https://creativecommons.org/licenses/by/4.0/

Kodikara, Timothy

The physics-based TIE-GCM OTHITACS 2007

hdl:21.14106/1a231229850dcae54b4e3102a387b9e030cdd3a6

Kodikara, Timothy

Dataset

Summary: [ Derived from parent entry - See data hierarchy tab ]

TIE-GCM (thermosphere-ionosphere-electrodynamics general circulation model) is a three-dimensional, time-dependent, physics-based model of the thermosphere and ionosphere (https://doi.org/10.1029/92GL00401). The website http://www.hao.ucar.edu/modeling/tgcm hosts the open-source TIE-GCM code. TIE-GCM assumes hydrostatic equilibrium, constant gravity, steady-state ion and electron energy equations, and incompressibility on a constant pressure surface.

In this experiment, we use TIE-GCM version 2.0 (released on 21 March 2016) with a horizontal resolution of 2.5 by 2.5 in geographic latitude and longitude, and a vertical resolution of 0.25 scale-height. We specify the solar irradiance input to the model via an empirical solar proxy model—the extreme ultraviolet flux model for aeronomic calculations (EUVAC; https://doi.org/10.1029/94JA00518; https://doi.org/10.1029/2005JA011160). This empirical formulation uses the average of the daily solar flux F10.7 and its 81-day centred mean. Here, we use the value observed by the ground-based solar radio telescope, as it is more suitable for upper-atmospheric applications than the F10.7 adjusted for Earth-Sun distance. We use the Kp index-based ion convection model of Heelis et al. (1982; https://doi.org/10.1029/JA087iA08p06339) and the auroral particle precipitation scheme of Roble and Ridley (1987; https://ui.adsabs.harvard.edu/abs/1987AnGeo...5..369R) with modifications of Emery et al. (2012; http://doi.org/10.5065/D6N29TXZ) to specify the magnetospheric forcing, which describes the high-latitude mean energy, energy flux and electric potential. To account for the tidal forcing from the lower atmosphere, we use the global scale wave model (GSWM) of Hagan et al. (2001; https://doi.org/10.1029/2000JA000344) to perturb the lower boundary of the TIE-GCM. Here, the GSWM specifies the migrating diurnal and semidiurnal and the nonmigrating diurnal and semidiurnal tides, which add perturbations to the zonal mean neutral temperature and horizontal winds, among others. We also add perturbations to the advective and diffusive transport via the constant eddy diffusion coefficient described in Qian et al. (2009; https://doi.org/10.1029/2008JA013643).

Through this experiment, we provide access to the following diagnostic quantities at a cadence of 10 minutes:
Neutral temperature,
Neutral zonal wind,
Neutral meridional wind,
Neutral vertical wind,
Molecular oxygen,
Atomic oxygen,
Molecular nitrogen,
Nitric oxide,
Helium,
Total neutral mass density,
TEC: total electron content,
Electron density,
Electron temperature,
Ion temperature,
O+ ion,
O2+ ion,
Electric potential,
Joule heating,
BX/BMAG: normalized eastward component of magnetic field,
BY/BMAG: normalized northward component of magnetic field,
BZ/BMAG: normalized upward component of magnetic field,
BMAG: magnetic field magnitude,
Zonal ExB velocity,
Meridional ExB velocity,
Vertical ExB velocity,
Zonal component of electric field,
Meridional component of electric field,
Vertical component of electric field,
Magnetic eastward component of electric field,
Magnetic downward (equatorward) component of electric field,
Geopotential height,
Geometric height ZG,
Pedersen conductivity,
Hall conductivity,
Pedersen ion drag coefficient,
Hall ion drag coefficient,
Aurora energy flux,
Aurora number flux.
Project: OTHITACS (The open time-series of the high-resolution ionosphere-thermosphere aeronomic climate simulation)
Spatial Coverage: Longitude -180 to 180 Latitude -88.75 to 88.75 Altitude: -7 level to 7 level
Temporal Coverage: 2007-01-01 to 2007-12-31 (standard)
Use constraints: Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/)
Data Catalog: World Data Center for Climate
Access constraints: registered users
Size: 3.59 TiB (3944367909760 Byte)
Format: NetCDF
Status: completely archived
Creation Date: 2023-04-21
Future Review Date: 2033-04-21
Download Permission: Please login to check permission and download options

Preview data headers

Cite as: [ Derived from parent entry - See data hierarchy tab ]
Kodikara, Timothy (2023). The open time-series of the high-resolution ionosphere-thermosphere aeronomic climate simulation (OTHITACS). World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.26050/WDCC/OTHITACS_tiegcm

BibTeX RIS

Variable	Aggregation	Unit
81-day average 10.7 cm solar flux	10min	1.e-22 W/m2/Hz
air_densityCF	10min	g cm-3
air_temperatureCF	10min	K
amplitude and phase of diurnal tide mode (1,1)	10min	None
amplitudes and phases of semi-diurnal tide	10min	None
atomic oxygen ion	10min	cm-3
atomic_oxygen_mass_mixing_ratio	10min	None
Aurora Energy Flux	10min	ergs/cm2/s
Aurora Number Flux	10min	cm-2 s-1
BX component of magnetic field	10min	None
BY component of magnetic field	10min	None
BZ component of magnetic field	10min	None
Characteristic Maxwellian energy of drizzle electrons	10min	keV
Characteristic Maxwellian energy of polar cusp electrons	10min	keV
Column energy input of drizzle electrons	10min	ergs/cm2/s
Column energy input of polar cusp electrons	10min	ergs/cm2/s
critical cross-over latitude 1	10min	degree
critical cross-over latitude 2	10min	degree
Cross-tail potential	10min	kV
Daily 10.7 cm solar flux	10min	1.e-22 W/m2/Hz
eastward_windCF	10min	cm s-1
electric potential	10min	V
electron densitiy	10min	cm-3
electron temperature	10min	K
Gaussian half-width of the midnight auroral oval	10min	degrees
Gaussian half-width of the noon auroral oval	10min	degrees
geometric height	10min	cm
geopotential_heightCF	10min	cm
gravitational acceleration	10min	cm s-1
Hall Conductivity	10min	S/m
Hall Ion Drag Coefficient	10min	s-1
helium_mass_mixing_ratio	10min	None
Hemispheric power	10min	GW
ion temperature	10min	K
ion/neutral collision factor	10min	None
Joule Heating	10min	erg/g/s
joule heating factor	10min	None
Kp index	10min	None
lat,lon coordinates of S,N magnetic poles	10min	degrees
Lower magnetic auroral activity index	10min	nT
Magnetic downward (equatorward) component of electric field	10min	V/m
Magnetic eastward component of electric field	10min	V/m
Magnetic field magnitude	10min	Gauss
Meridional component of electric field	10min	V/m
Meridional ExB Velocity	10min	cm s-1
molecular oxygen ion	10min	cm-3
molecular_nitrogen_mass_mixing_ratio	10min	None
molecular_oxygen_mass_mixing_ratio	10min	None
nitric_oxide_mass_mixing_ratio	10min	None
northward_windCF	10min	cm s-1
Peak energy flux in midnight sector of the aurora	10min	ergs/cm2/s
Peak energy flux in noon sector of the aurora	10min	ergs/cm2/s
Pedersen Conductivity	10min	S/m
Pedersen Ion Drag Coefficient	10min	s-1
reference_air_pressure_for_atmosphere_vertical_coordinateCF	10min	mb
Solar wind density	10min	cm3
Solar wind velocity	10min	km s-1
Total Electron Content	10min	cm-2
upward_air_velocityCF	10min	cm s-1
Vertical component of electric field	10min	V/m
Vertical ExB Velocity	10min	cm s-1
ZMAG from pdynamo	10min	km
Zonal component of electric field	10min	V/m
Zonal ExB Velocity	10min	cm s-1

Parent

The physics-based TIE-GCM OTHITACS

Details

Parent project(s)

The open time-series of the high-resolution ionosphere-thermosphere aeronomic climate simulation

[Entry acronym: OTHITACS_tiegcm_2007] [Entry id: 4458250]