Gulf of Mexico

The nitrate climatological fields can be downloaded as an individual file or a compressed file of all climatological fields and related statistics.
The WOA documentation includes information on downloading and reading the data.

Statistical mean data links (1° grid)
All fields climatology.tar.gz (0.8 MB)

Annual	Seasonal	Monthly
n00mn01.csv	n13mn01.csv - Winter n14mn01.csv - Spring n15mn01.csv - Summer n16mn01.csv - Fall	n01mn01.csv - January n02mn01.csv - February n03mn01.csv - March n04mn01.csv - April n05mn01.csv - May n06mn01.csv - June n07mn01.csv - July n08mn01.csv - August n09mn01.csv - September n10mn01.csv - October n11mn01.csv - November n12mn01.csv - December

File naming conventions: [V][TT][FF][GG].[EXT]
where:
[V] - variable
[TT] - time period
[FF] - field type
[GG] - grid (01- 1°, 04 - 1/4° 10 - 1/10°)
[EXT] - file extention
Note: '.dat' - ASCII; '.csv' - comma separated value; '.dbf', '.shp', '.shx' - ArcGIS shape files; '.nc' - netCDF files

Objectively analyzed climatologies are the objectively interpolated mean fields for oceanographic variables at standard depth levels for the World Ocean.
The statistical mean is the average of all unflagged interpolated values at each standard depth level for each variable in each 1° square which contains at least one measurement for the given oceanographic variable.
The number of observations of each variable in each 1° square of the World Ocean at each standard depth level.
The standard deviation about the statistical mean of each variable in each 1° square at each standard depth level.
The standard error of the mean of each variable in each 1° square at each standard depth level.
The seasonal or monthly climatology minus the annual climatology at each 1° square at each standard depth.
The statistical mean minus the climatological mean at each 1° square at each standard depth. This value is used as an estimate of interpolation and smoothing error.
The number of 1° squares within the smallest radius of influence around each 1° square which contain a statistical mean.

nitrate - Statistical mean on 1° grid for all decades