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Data Formats
NSCAT
- Stresses
The data is stored in a NetCDF format. The following is an example dump (of the header) from June of 1997. The header applies to any month in the data set, and it describes the data format and content.
netcdf NSCATstress.199706 {
dimensions:
lon = 720 ;
lat = 360 ;variables:
float lat(lat) ;
lat:units = "degrees_north" ;
lat:long_name = "latitude" ;float lon(lon) ;
lon:units = "degrees_east" ;
lon:long_name = "longitude" ;float tx(lat, lon) ;
tx:long_name = "zonal surface stress" ;
tx:units = "N/m^2s" ;
tx:actual_range = -0.4725911f, 0.5122296f ;
tx:direction = "positive values for westward stress" ;
tx:missing_value = -9999.f ;float ty(lat, lon) ;
ty:long_name = "meridional surface stress" ;
ty:units = "N/m^2s" ;
ty:actual_range = -0.3641433f, 0.4351725f ;
ty:direction = "positive values for northward stress" ;
ty:missing_value = -9999.f ;// global attributes:
:dataset = "COAPS NSCAT Level 3 - Monthly Mean Stress" ;
:data_date = "June 1997" ;
:data_source = "NSCAT L17 and L20" ;
:scatterometer_model_function = "NSCAT-I" ;
:grid_resolution = "half degree" ;
:history = "Created 24 MAR 1998 by COAPS/FSU" ;}
- Winds
The data is stored in a NetCDF format. The following is an example dump (of the header) from the 117th day of 1997. The header applies to any day in the data set, and it describes the data format and content.
To save space, the data has been stored with a scale factor and an offset. To convert the data to physical units, multiply the retreived value by the scale factor and then add the offset. The missing data value applies to the data prior to rescaling.
netcdf NSCAT.wt1.0.1997117 {
dimensions:
lon = 360 ;
lat = 180 ;variables:
float lon(lon) ;
lon:units = "degrees_east" ; float lat(lat) ;
lat:units = "degrees_north" ;< short u(lat, lon) ;
u:long_name = "zonal wind at 10m" ;
u:units = "m/s" ;
u:direction = "positive values for westward flow" ;
u:actual_range = -17.22f, 18.43f ;
u:scale_factor = 0.01f ;
u:missing_value = 32767s ;short v(lat, lon) ;
v:long_name = "meridional wind at 10m" ;
v:units = "m/s" ;
v:direction = "positive values for northward flow" ;
v:actual_range = -16.55f, 17.41f ;
v:scale_factor = 0.01f ;
v:missing_value = 32767s ;// global attributes:
:dataset = "COAPS NSCAT Level 3 Daily Winds" ;
:data_date = "27 April 1997" ;
:data_source = "NSCAT L20 (50-km resolution)" ;
:scatterometer_model_function = "NSCAT-I" ;
:wind_reference_height = "10m" ;
:history = "Created on 22 January 1999 by COAPS/FSU" ;
:contact_info = "scat_sci@coaps.fsu.edu" ;}
- Pseudostresses
The data is stored in a NetCDF format. The following is an example dump (of the header) from the 117th day of 1997. The header applies to any day in the data set, and it describes the data format and content.
netcdf ndn_gcvnscat_1997117 {
dimensions:
day = UNLIMITED ; // (1 currently)
lat = 64 ;
lon = 100 ;variables:
int day(day) ; day:units = "yyyyddd" ;
day:long_name = "Date" ;float lat(lat) ;
lat:units = "degree-north" ;
lat:long_name = "Latitude" ;
lat:min_max = -34.5f, 28.5f ;float lon(lon) ;
lon:units = "degree-east" ;
lon:long_name = "Longitude (E)" ;
lon:min_max = 25.5f, 124.5f ;float wind_u(day, lat, lon) ;
wind_u:units = "(meter/second)^2" ;
wind_u:long_name = "Pseudo-Stress U" ;
wind_u:missing_value = -9999.f ;float wind_v(day, lat, lon) ;
wind_v:units = "(meter/second)^2" ;
wind_v:long_name = "Pseudo-Stress V" ;
wind_v:missing_value = -9999.f ;// global attributes:
:title = "Indian Ocean GCV daily pseudo-stress from NSCAT" ;
:source = "COAPS at Florida State University" ;
:date = "1 May 1998" ;}
- Stresses