The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data

OAS datatype Detail for photoperiod
datatypes_id: 643
Codeset:
Code:
Term: photoperiod
Use instead:
Compare to:
Definition: The interval in a 24-hour period during which a plant or animal is exposed to light.
Citation:
Deprecated: false
Metadata version: 0
Keydate: 2011-07-26 18:15:39+00
Editdate: 2011-07-26 18:15:39+00