Re: How to deal with history ocean station data

[Joe McLean <joe.mclean@xxxxxxxx>]

Hi Ding,


Chi wrote:

> Hi dear LAS users
>     I have the ocean station data for nitrate from 1965 to 2000, which was downloaded from NOAA world ocean database web site at http://www.nodc.noaa.gov/OC5/SELECT/dbsearch/dbsearch.html
>     The nitrate data was collected in different areas lon/lat/depth and in different years. For instance, some data was collected in area 1 only at 1970 and 1983. And the areas ( lon/lat) were not uniformly distributed.  I don't know how to proceed on this dataset.

The file you downloaded from NODC contains data in the OCL WOD native format, an ascii representation of the structure and data.  NODC offers some fortran programs which will allow you to read the data.  You can read about this at  http://www.nodc.noaa.gov/OC5/WOD01/doc01.html



> So far my previous LAS experience was that I did 3D interpolation on a profile dataset and managed to make LAS work on it.

In order to interpolate the data onto a XYZT gridded structure, you would need to extract the X,Y,Z,T, and Nitrate values from this file first.

In the LAS developers group, we are working on providing access to the World Ocean Database through LAS and will have more information soon.

>
>     Anybody can give me some suggestions or information? Any help will be appreciated.
>     Thanks a lot, Ding