CDO

Hi All,

I'm totally new to this and need some help. I've downloaded a nc file from www.myocean.com which contains currents as u and v fields. But when I use CDO to convert this file into GRIB it changes the field definition.
Unfortunately the software I use to view the GRB file (ExpeditionLT from http://www.expeditionmarine.com/) doesn't recognize and can't remap the new fields.

Can I get CDO to output the currents in a recognizable format?

Panoply reports this definition:

NC file:

Variable "u"

double u(time_counter=28, depth=50, latitude=121, longitude=121);
:_CoordinateAxes = "time_counter depth latitude longitude ";
:long_name = "Eastward velocity";
:standard_name = "eastward_sea_water_velocity";
:units = "m s-1";
:unit_long = "Meters per second";
:cell_methods = "area: mean";
Variable "v"

double v(time_counter=28, depth=50, latitude=121, longitude=121);
:_CoordinateAxes = "time_counter depth latitude longitude ";
:long_name = "Northward velocity";
:standard_name = "northward_sea_water_velocity";
:units = "m s-1";
:unit_long = "Meters per second";
:cell_methods = "area: mean";

Converted GRB file:
Variable "Pressure_reduced_to_MSL_depth_below_sea" (This equals the U data. I've compared the values)

float Pressure_reduced_to_MSL_depth_below_sea(time=28, depth_below_sea=50, lat=121, lon=121);
:long_name = "Pressure reduced to MSL @ Depth below sea level";
:units = "Pa";
:missing_value = NaNf; // float
:grid_mapping = "LatLon_Projection";
:Grib_Variable_Id = "VAR_0-0-255-2_L160";
:Grib1_Center = 0; // int
:Grib1_Subcenter = 0; // int
:Grib1_TableVersion = 255; // int
:Grib1_Parameter = 2; // int
:Grib1_Level_Type = 160; // int

Variable "Pressure_tendency_depth_below_sea" (This equals the V data. I've compared the values)
float Pressure_tendency_depth_below_sea(time=28, depth_below_sea=50, lat=121, lon=121);
:long_name = "Pressure tendency @ Depth below sea level";
:units = "Pa.s-1";
:missing_value = NaNf; // float
:grid_mapping = "LatLon_Projection";
:Grib_Variable_Id = "VAR_0-0-255-3_L160";
:Grib1_Center = 0; // int
:Grib1_Subcenter = 0; // int
:Grib1_TableVersion = 255; // int
:Grib1_Parameter = 3; // int
:Grib1_Level_Type = 160; // int