Modifications from SAMI2-1.00¶
NRLMSISe-00¶
This version uses the official release of NRLMSISe-00 (with one modification, discussed below). The unmodified version can be found at https://map.nrl.navy.mil/map/pub/nrl/NRLMSIS/NRLMSISE-00/
The exospheric neutral temperature can be directly scaled by the user for extreme solar minimum conditions, as discussed by Emmert et al [2010]. This is modified by the Tinf_scale
keyword, and is passed through the namelist as Tinf_scl.
Photoionization¶
The photoionization rates can be modified by scaling the resultant EUV spectra. Note that this occurs independently of any modifications to the neutral atmosphere through MSIS. See Klenzing et al [2013] for examples. This is modified by the euv_scale
keyword, and is passed through the namelist as euv_scl.
ExB Drifts¶
Fejer-Scherliess remains the default model for drifts, but the user may now input a series of Fourier coefficients to describe the ExB drifts as a function of local time rather than use the Fejer-Scherliess model. The coefficients are specified by the ExB_drifts
keyword, which are passed into sami2 through the new exb.inp file. The fourier coefficient routine replaces the sine wave triggered when .fejer. = false.
Horizontal Wind Model¶
Sami2py uses the HWM-14 model by default. Users may specify HWM93 or HWM07 for comparison through the hwm_model
keyword, which is passed through the namelist as hwm_mod.