c1440_llc2160 spans 20200119_2100z to 20210326_1800z
MItgcm timesteps 0000000000 to 0000829200
MITgcm deltaT = 45 s

Available hourly output is:
Eta.*.data      sea surface height (m)
KPPhbl.*.data   mixing layer depth (m)
PhiBot.*.data   bottom pressure (m^2/s^2)
                PhiBot = g * ( etaN + \int (rho/rhoConst - 1) dr )
                convert PhiBot to m of water: divide by g = 9.81 m/s^2
                convert PhiBot to pressure in Pa: multiply by rhoConst = 1027.5 kg/m^3
                PhiBot = g * ( etaN + \int (rho/rhoConst - 1) dr )
                that is, PhiBot is the anomaly relative to Depth * rhoConst * g
                so that absolute bottom pressure in Pa is:
                Depth * rhoConst * g + PHIBOT * rhoConst
SIarea.*.data   fractional ice-covered area for 5 categories [0 to 1]
SIheff.*.data   effective ice thickness for 5 categories (m)
SIhsnow.*.data  effective snow thickness for 5 categories (m)
SItice          ice surface temperature for 5 categories (deg K)
SIuice.*.data   zonal (relative to grid) ice velocity, >0 from West to East (m/s)
SIvice.*.data   merid. (relative to grid) ice velocity, >0 from South to North (m/s)
Salt.*.data     salinity (g/kg)
Theta.*.data    potential temperature (deg C)
U.*.data        zonal (relative to grid) velocity, >0 from West to East (m/s)
                specified on Southwest C-grid U point
V.*.data        merid. (relative to grid) velocity, >0 from South to North (m/s)
                specified on Southwest C-grid V point
W.*.data        vertical velocity (m/s)
oceFWflx.*.data net upward freshwater flux, >0 increases salinity (kg/m^2/s)
oceQnet.*.data  net upward surface heat flux (including shortwave), >0 decreases theta (W/m^2)
oceQsw.*.data   net upward shortwave radiation, >0 decreases theta (W/m^2)
oceSflux.*.data net upward salt flux, >0 decreases salinity (g/m^2/s)
oceTAUX.*.data  zonal (relative to grid) surface wind stress, >0 increases uVel (N/m^2)
                specified on Southwest C-grid U point
oceTAUY.*.data  meridional (relative to grid) surf. wind stress, >0 increases vVel (N/m^2)
                specified on Southwest C-grid V point

Please note that U, V, oceTAUX, oceTAUY, SIuice, and SIvice are aligned
relative to model grid, not geographical coordinates, and that they are
specified at the SouthWest C-grid velocity points.  All other scalar fields
are specified at the tracer point, i.e., the center of each grid box.

Sea Surface Height (SSH) components:
SSH = Eta + sIceLoad / rhoConst
sIceLoad = SIheff * SEAICE_rhoIce + SIhsnow * SEAICE_rhoSnow
SEAICE_rhoIce = 910
SEAICE_rhoSnow = 330
rhoConst = 1027.5
gravity = 9.81
https://github.com/MITgcm/MITgcm/files/7521065/steric.pdf
Steric = SSH - PhiBot / gravity + (AtmosPres + TidalPotential) / rhoConst / gravity - AtmosPres - TidalPotential

==================
atmospheric fields
==================
	PS/
	U10M/
	V10M/
from 
/nobackupp17/dmenemen/DYAMOND/c1440_llc2160/holding/inst_15mn_2d_asm_Mx/
C1440 grid
interpolated to
LLC2160 grid

first file (ie, *.0000000000.data) from "21:15" instead of "21:00"
because "21:00" is unavailable.

Unlike oceTAUX/oceTAUY which is exactly aligned w/ llc-grid,
U10M/V10M is Eastward/Northward on llc-grid, similar to
"
UE_VEL_C|UMR     MR|m/s             |Eastward Velocity (m/s) (cell center)
VN_VEL_C|VMR     MR|m/s             |Northward Velocity (m/s) (cell center)
"
from 
9.1.4.4. MITgcm kernel available diagnostics list at
https://mitgcm.readthedocs.io/en/latest/outp_pkgs/outp_pkgs.html


==========
SSH fields
==========
	SSH/
	SSH_notides/
	SSH_noIB/
	SSH_steric/	
SSH = Eta + sIceLoad / rhoConst	
      where
	sIceLoad = SIheff * SEAICE_rhoIce + SIhsnow * SEAICE_rhoSnow
	SEAICE_rhoIce = 910
	SEAICE_rhoSnow = 330
	rhoConst = 1027.5
	gravity = 9.81
SSH_notides = SSH - tides (by "t_tides" package)
SSH_noIB = SSH_notides + (PS - PS_globalmean)/rhoConst/gravity
SSH_steric = SSH - PhiBot/gravity + PS/rhoConst/gravity
      where
      	PhiBot = PhiBot - PhiBot_timemean (over last 12 months)
	PS = PS - surf_pRef (=101325)
      refer to https://github.com/MITgcm/MITgcm/files/7521065/steric.pdf


===========

Additional integration details are here:
https://github.com/MITgcm-contrib/llc_hires/tree/master/c1440_llc2160

and in subdirectory global_SSH, obtained from:
https://github.com/MITgcm-contrib/llc_hires/tree/master/c1440_llc2160/global_SSH