Although oceanographic
observations using satellites are limited to sea surface information, many variables, not just salinity, can be obtained.
(Example: sea surface water temperature, sea surface salinity,
ocean surface wind, and chlorophyll a concentration）
By combining these satellite
variables, as well as field observation data in some cases, we can gain knowledge
that contributes to improving our understanding of the marine environment and
fishery resources.
The history of satellite
observations,particularly for salinity, is short atapproximately
10 years (approximately 50 years for water temperature), and the development of
this field is expected to continue in the future.
