Changes between Version 9 and Version 10 of PointObservationConventions


Ignore:
Timestamp:
10/26/09 11:31:48 (10 years ago)
Author:
caron
Comment:

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  • PointObservationConventions

    v9 v10  
    994994When profiles are taken along a trajectory, one gets a time series of profiles called a section. This looks like a collection of profiles (see 9.5), except that the profile locations are assumed to be a connected set of points along a trajectory.
    995995
    996 === 9.7.1 Multidimensional representation ===
     996Some assumption are common to all section representations:
     997
     998   * There must be a variable (of any type) with standard_name attribute "'''section_id'''", whose values uniquely identify the section.
     999   * The outer dimension of the section_id variable is the 'section dimension'.
     1000   * All variables that have the trajectory dimension as their single dimension are considered to be information about that section
     1001   * The section_id variable may use missing values. This allows one to reserve more space than is needed.
     1002
     1003=== 9.7.1 Section multidimensional representation ===
    9971004
    9981005If there are the same number of profiles for all trajectories, and the same number of vertical levels for every profile, one can use the multidimensional representation:
     
    10061013variables:
    10071014  int section(section) ;
    1008     section:standard_name = "section id" ;
     1015    section:standard_name = "section_id" ;
    10091016  float lon(section, profile) ;
    10101017    lon:units = "degrees_east";
     
    10591066variables:
    10601067  int section ;
    1061     section:standard_name = "section id" ;
     1068    section:standard_name = "section_id" ;
    10621069  float lon(profile) ;
    10631070    lon:units = "degrees_east";
     
    11071114variables:
    11081115  int section ;
    1109     section:standard_name = "section id" ;
     1116    section:standard_name = "section_id" ;
    11101117
    11111118  int profile(profile) ;