
The data included here is from the NCAR POP2 (active ocean/sea ice) model. The model was forced with 5 cycles of the CORE data (from 1948-2007). Each term requested is provided in 5 files, one for each cycle; thus, each file has 720 time steps. All files should have the same missing (land) value, 9.96921e+36f. The following describes each set of data requested.


1. MODEL GEOMETRY

The file titled model_geometry.nc includes the following variables from POP2 output:

	1. TLONG = tracer cell latitude
	2. TLAT = tracer cell longitude
	3. TAREA = horizontal area (m^2) of grid cells, does not change with depth
	4. z_w = depth from surface to midpoint of layer (m)
	5. z_t = depth from surface to top of layer (m)
	6. VOLUME = volume of tracer cells (calculated TAREA*layer thickness) (m^3), land value = 0
	
2. SEA SURFACE HEIGHT AND BOTTOM PRESSURE

	1. SSH_Annually = sea surface height output by model (annual averages) (cm)
	2. SSH_Monthly = sea surface height output by model (monthly averages) (cm)
	3. Pbottom_Annually = estimated bottom pressure (annual averages) (Pa)
                Calculated from the sea-surface pressure (CORE forcing-NCEP) and ocean 3-D density distribution (RHO), P_bot=P_atm+rho*g*h. 
	4. Pbottom_Monthly = estimated bottom pressure (monthly averages) (Pa)
                Calculated from the sea-surface pressure (CORE forcing-NCEP) and ocean 3-D density distribution (RHO), P_bot=P_atm+rho*g*h.
	
3. STERIC EFFECTS

	1. TEMP_Annually = 3D TEMP field output by model (annual averages) (degC)
	2. SALT_Annually = 3D SALT field output by model (annual averages) (g/kg)
	
4. BOUNDARY FORCING
	
	1. curl_Monthly = wind stress curl calculated from TAUX and TAUY output by model 
		(monthly averages) (dy/m^3)
	
	2. SHF_Monthly = net surface heat flux output by the model (monthly averages) (W/m^2)
		
		The model calculates SHF from the following variables: net shortwave, net longwave,
		sensible heat, latent heat, melt flux, snow flux, heat flux due to ice formation, 
		and ice runoff heat flux. The terms from the ocean model used for these are: SHF_QSW, 
		(LWDN_F,LWUP_F), SENH_F, EVAP_F, MELT_F, SNOW_F, QFLUX, and IOFF_F.
		
	3. salt_flux_Monthly = net surface salt flux (averaged monthly) (kg/m^2/s)
	
		Calculated from the ice-ocean interaction and salt restoring terms output
		by the model. These terms are: SALT_F and SFWF_WRST.
	
	4. mass_flux_Monthly = net mass flux from precipitation, evaporation, rivers, and sea 
		ice melt/formation. (monthly averages) (kg/m^2/s)
		
		This was calculated from the following variables output by the model: 
		PREC_F, EVAP_F, ROFF, MELT_F.
		
	5. There is no geothermal heating in the POP2 model.

