| ADVr_TH |
Vertical advective flux of potential temperature (THETA) in the +z direction through the top 'w' face of the tracer cell on the native model grid. Note: in the Arakawa-C grid, vertical flux quantities are staggered relative to the tracer cells with indexing such that +ADVr_TH(i,j,k_l) corresponds to upward +z fluxes through the top 'w' face of the tracer cell at (i,j,k) |
degree_C m3 s-1 |
float |
9.96921E+36 |
-1064475600 to 604024700 |
1 |
| ADVx_TH |
Lateral advective flux of potential temperature (THETA) in the +x direction through the 'u' face of the tracer cell on the native model grid. Note: in the Arakawa-C grid, horizontal flux quantities are staggered relative to the tracer cells with indexing such that +ADVx_TH(i_g,j,k) corresponds to +x fluxes through the 'u' face of the tracer cell at (i,j,k). Also, the model +x direction does not necessarily correspond to the geographical east-west direction because the x and y axes of the model's lat-lon-cap (llc) curvilinear lat-lon-cap (llc) grid have arbitrary orientations which vary within and across tiles. |
degree_C m3 s-1 |
float |
9.96921E+36 |
-282319000 to 365234700 |
1 |
| ADVy_TH |
Lateral advective flux of potential temperature (THETA) in the +y direction through the 'v' face of the tracer cell on the native model grid. Note: in the Arakawa-C grid, horizontal flux quantities are staggered relative to the tracer cells with indexing such that +ADVy_TH(i,j_g,k) corresponds to +y fluxes through the 'v' face of the tracer cell at (i,j,k). Also, the model +y direction does not necessarily correspond to the geographical north-south direction because the x and y axes of the model's curvilinear lat-lon-cap (llc) grid have arbitrary orientations which vary within and across tiles. |
degree_C m3 s-1 |
float |
9.96921E+36 |
-312360640 to 434661440 |
1 |
| DFrE_TH |
The explicit term of the vertical diffusive flux of potential temperature (THETA) in the +z direction through the top 'w' face of the tracer cell on the native model grid. In the ECCO V4r4 model, an implicit scheme is used to calculate vertical diffusive tracer fluxes due to background diffusivity and the Kwz component of the GM-Redi tensor (vertical flux as a function of vertical gradient) while an explicit scheme is used to calculate the vertical diffusive fluxes from the Kwx and Kwy components of the GM-Redi tensor (vertical flux as a function of horizontal gradient). Both implicit and explicit components of vertical diffusive flux of potential temperature are provided. Note: in the Arakawa-C grid, vertical flux quantities are staggered relative to the tracer cells with indexing such that +DFrE_TH(i,j,k_l) corresponds to upward +z fluxes through the top 'w' face of the tracer cell at (i,j,k). |
degree_C m3 s-1 |
float |
9.96921E+36 |
-23706996 to 22750238 |
1 |
| DFrI_TH |
The implicit term of the vertical diffusive flux of potential temperature (THETA) in the +z direction through the top 'w' face of the tracer cell on the native model grid. In the ECCO V4r4 model, an implicit scheme is used to calculate vertical diffusive tracer fluxes due to background diffusivity and the Kwz component of the GM-Redi tensor (vertical flux as a function of vertical gradient) while an explicit scheme is used to calculate the vertical diffusive fluxes from the Kwx and Kwy components of the GM-Redi tensor (vertical flux as a function of horizontal gradient). Both implicit and explicit components of vertical diffusive flux of potential temperature are provided. Note: in the Arakawa-C grid, vertical flux quantities are staggered relative to the tracer cells with indexing such that +DFrI_TH(i,j,k_l) corresponds to upward +z fluxes through the top 'w' face of the tracer cell at (i,j,k) |
degree_C m3 s-1 |
float |
9.96921E+36 |
-23856088 to 30000936 |
1 |
| DFxE_TH |
Lateral diffusive flux of potential temperature (THETA) in the +x direction through the 'u' face of the tracer cell on the native model grid. Note: in the Arakawa-C grid, horizontal flux quantities are staggered relative to the tracer cells with indexing such that +DFxE_TH(i_g,j,k) corresponds to +x fluxes through the 'u' face of the tracer cell at (i,j,k). Also, the model +x direction does not necessarily correspond to the geographical east-west direction because the x and y axes of the model's curvilinear lat-lon-cap (llc) grid have arbitrary orientations which vary within and across tiles. |
degree_C m3 s-1 |
float |
9.96921E+36 |
-3487173.5 to 5744557 |
1 |
| DFyE_TH |
Lateral diffusive flux of potential temperature (THETA) in the +y direction through the 'v' face of the tracer cell on the native model grid. Note: in the Arakawa-C grid, horizontal flux quantities are staggered relative to the tracer cells with indexing such that +DFyE_TH(i,j_g,k) corresponds to +y fluxes through the 'v' face of the tracer cell at (i,j,k). Also, the model +y direction does not necessarily correspond to the geographical north-south direction because the x and y axes of the model's curvilinear lat-lon-cap (llc) grid have arbitrary orientations which vary within and across tiles. |
degree_C m3 s-1 |
float |
9.96921E+36 |
-4140389.5 to 9213336 |
1 |
| i |
In the Arakawa C-grid system, tracer (e.g., THETA) and 'v' variables (e.g., VVEL) have the same x coordinate on the model grid. |
N/A |
int |
N/A |
N/A |
1 |
| i_g |
In the Arakawa C-grid system, 'u' (e.g., UVEL) and 'g' variables (e.g., XG) have the same x coordinate on the model grid. |
N/A |
int |
N/A |
N/A |
1 |
| j |
In the Arakawa C-grid system, tracer (e.g., THETA) and 'u' variables (e.g., UVEL) have the same y coordinate on the model grid. |
N/A |
int |
N/A |
N/A |
1 |
| j_g |
In the Arakawa C-grid system, 'v' (e.g., VVEL) and 'g' variables (e.g., XG) have the same y coordinate. |
N/A |
int |
N/A |
N/A |
1 |
| k |
grid index in z for tracer variables |
N/A |
int |
N/A |
N/A |
1 |
| k_l |
First index corresponds to the top surface of the uppermost tracer grid cell. The use of 'l' in the variable name follows the MITgcm convention for ocean variables in which the lower (l) face of a tracer grid cell on the logical grid corresponds to the top face of the grid cell on the physical grid. |
N/A |
int |
N/A |
N/A |
1 |
| k_p1 |
Includes top of uppermost model tracer cell (k_p1=0) and bottom of lowermost tracer cell (k_p1=51). |
N/A |
int |
N/A |
N/A |
1 |
| k_u |
First index corresponds to the bottom surface of the uppermost tracer grid cell. The use of 'u' in the variable name follows the MITgcm convention for ocean variables in which the upper (u) face of a tracer grid cell on the logical grid corresponds to the bottom face of the grid cell on the physical grid. |
N/A |
int |
N/A |
N/A |
1 |
| tile |
The ECCO V4 horizontal model grid is divided into 13 tiles of 90x90 cells for convenience. |
N/A |
int |
N/A |
N/A |
1 |
| time |
center time of averaging period |
hours since 1992-01-01T12:00:00 |
int |
N/A |
N/A |
1 |
| time_bnds |
Start and end times of averaging period. |
N/A |
int |
N/A |
N/A |
1 |
| XC |
nonuniform grid spacing |
degrees_east |
float |
N/A |
N/A |
1 |
| XC_bnds |
Bounds array follows CF conventions. XC_bnds[i,j,0] = 'southwest' corner (j-1, i-1), XC_bnds[i,j,1] = 'southeast' corner (j-1, i+1), XC_bnds[i,j,2] = 'northeast' corner (j+1, i+1), XC_bnds[i,j,3] = 'northwest' corner (j+1, i-1). Note: 'southwest', 'southeast', northwest', and 'northeast' do not correspond to geographic orientation but are used for convenience to describe the computational grid. See MITgcm dcoumentation for details. |
N/A |
float |
N/A |
N/A |
1 |
| XG |
Nonuniform grid spacing. Note: 'southwest' does not correspond to geographic orientation but is used for convenience to describe the computational grid. See MITgcm dcoumentation for details. |
degrees_east |
float |
N/A |
N/A |
1 |
| YC |
nonuniform grid spacing |
degrees_north |
float |
N/A |
N/A |
1 |
| YC_bnds |
Bounds array follows CF conventions. YC_bnds[i,j,0] = 'southwest' corner (j-1, i-1), YC_bnds[i,j,1] = 'southeast' corner (j-1, i+1), YC_bnds[i,j,2] = 'northeast' corner (j+1, i+1), YC_bnds[i,j,3] = 'northwest' corner (j+1, i-1). Note: 'southwest', 'southeast', northwest', and 'northeast' do not correspond to geographic orientation but are used for convenience to describe the computational grid. See MITgcm dcoumentation for details. |
N/A |
float |
N/A |
N/A |
1 |
| YG |
Nonuniform grid spacing. Note: 'southwest' does not correspond to geographic orientation but is used for convenience to describe the computational grid. See MITgcm dcoumentation for details. |
degrees_north |
float |
N/A |
N/A |
1 |
| Z |
Non-uniform vertical spacing. |
m |
float |
N/A |
N/A |
1 |
| Zl |
First element is 0m, the depth of the top face of the first tracer grid cell (ocean surface). Last element is the depth of the top face of the deepest grid cell. The use of 'l' in the variable name follows the MITgcm convention for ocean variables in which the lower (l) face of a tracer grid cell on the logical grid corresponds to the top face of the grid cell on the physical grid. In other words, the logical vertical grid of MITgcm ocean variables is inverted relative to the physical vertical grid. |
m |
float |
N/A |
N/A |
1 |
| Zp1 |
Contains one element more than the number of vertical layers. First element is 0m, the depth of the upper interface of the surface grid cell. Last element is the depth of the lower interface of the deepest grid cell. |
m |
float |
N/A |
N/A |
1 |
| Zu |
First element is -10m, the depth of the bottom face of the first tracer grid cell. Last element is the depth of the bottom face of the deepest grid cell. The use of 'u' in the variable name follows the MITgcm convention for ocean variables in which the upper (u) face of a tracer grid cell on the logical grid corresponds to the bottom face of the grid cell on the physical grid. In other words, the logical vertical grid of MITgcm ocean variables is inverted relative to the physical vertical grid. |
m |
float |
N/A |
N/A |
1 |
| Z_bnds |
One pair of depths for each vertical level. |
N/A |
float |
N/A |
N/A |
1 |