Restriction over spatial properties of profiles.

Restriction parameter: area

Definition

Restrict area code of profiles.

This parameter takes one or more of the following numerical values: 0, 1 or 2. See the map bellow showing those area codes.

  • Value 0 selects profiles located in the North-Atlantic ocean north of 20S and not in areas 1 and 2.
  • Value 1 selects profiles located in the Mediterranean Sea.
  • Value 2 selects profiles located in the Nordic Seas.

Examples

You can specify only one area code:

?get=n&area=0

But also more than one:

?get=n&area=0,2

Restriction parameter: around

Definition

Select profiles in a circular region.

This parameter selects profiles located around a given center point. The parameter value is a coma separated list of 3 or 4 numerical values depending on how the center point need to be specified:

  • Specification 1: The location is specified with specific geographical coordinates in the following format: The longitude must given between -180W and 180E and the distance is in kilometers.
  • Specification 2: The location is the one of an existing profile in the database. It is thus specified with a float WMO and a cycle number: This specification can take an optional fourth value specifying the time range in days around the specified profile.

Examples

The following restriction example follows the first specification:

?get=n&around=-40,35,100

It select only profiles sampled less than 100km around the point -40W,35N.

The following restriction follows the second specification:

?get=n&around=6900678,2,200

It select only profiles sampled less than 200km around the cycle number #2 of float WMO #6900678.
If one is interested in only selecting profiles sampled plus or minus 30 days around the cycle number #2 of float WMO #6900678: ?get=n&around=6900678,2,200,30

Restriction parameter: box

Definition

Select profiles in a rectangular region.

This parameter selects profiles located in a box, ie. a rectangular region. The parameter value is a coma separated list of 2 or 4 values depending on how the box need to be specified:

  • Specification 1: The box has a 1x1 degree fix size, values are the geographical coordinates of the center of the box: The longitude must given between -180W and 180E.
  • Specification 2: The box has a custom size, values are the geographical coordinates of the center of the box and its width and height: The longitude must given between -180W and 180E. Width and height are in degrees of longitude and latitude.

Examples

The following restriction example follows the first specification:

?get=n&box=-40,35

It select only profiles sampled in a 1x1 degree box centered around the point -40W,35N.

The following restriction example follows the second specification:

?get=n&box=-40,35,3,2

It select only profiles sampled in a 3x2 degree box centered around the point -40W,35N.