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Changes of the current version compared to public TIEGCM v2\.0 \(2016\): | ||
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- The job script is modified to support arbitrary combination of horizontal and vertical resolutions, change of magnetic grids is also supported\. | ||
- The job script, defs\.h and initialization of some altitude\-dependent variables \(xfac/ar\_glbm/aureff/bdriz\) are rewritten to support the extension of the upper boundary\. | ||
- The modeltime of input/output is set to 4 digits \(day/hour/minute/second\) instead of the old 3\-digit format \(day/hour/minute\) to allow a higher cadence\. | ||
- The calculation of N2 mixing ratio, mean molecular mass and scale height is unified in the model to avoid recalculation\. Some artificial caps of N2 mixing ratio are removed\. | ||
- Rewrite the Helium module and it is now included with in all resolutions \(default on\)\. | ||
- The old Fourier filter is replaced with the new ring filter\. | ||
- An additional input parameter NSTEP\_SUB is introduced to control the number of O\+ sub\-cyling\. | ||
- NetCDF4 parallel IO is turned on to reduce the memory usage on root task\. | ||
- ESMF calls are modified to ensure bit\-for\-bit reproducibility\. | ||
- IGRF is updated to the newest version\. | ||
- Magnetospheric coupling module is rewritten to support in-memory MPI data transfer\. | ||
- Simplify the code by removing unused parameters/argmuments/variables in some functions\. | ||
- Some MPI subroutines are rewritten to allow a speed boost\. | ||
- dipmin is set to sin\(dlat\*2\*dtr\) instead of manual setup in different resolutions\. | ||
- Some minor bug fixes\. | ||
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Change of physics: | ||
- Modified the coefficients of solar heating \(Astrid Maute\)\. | ||
- Add a scaling factor in accounting for the height variation of equatorward electric field \(elam\) \(Astrid Maute\)\. | ||
- Include the field\-aligned ion drag in the momentum equation \(Jiuhou Lei\)\. | ||
- Change the parameterization scheme of electron heat flux \(fed\) near the equator in settei \(Tong Dang\)\. | ||
- Use a sixth\-order polynomial for thermal electron heating efficiency \(Yihui Cai\)\. | ||
- Electrojet turbulent heating, default off \(Jing Liu\)\. | ||
- Empirical SAPS, default off \(Cheng Sheng\)\. |
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