The use of keywords
is an easy way to search for data if you do not know the data formats.
Thus, if you are looking for temperature data, you only have to
select the keyword "TEMPERATURE"; you do not have to know
what file type contains temperature data. This is also a way build
your query more rapidly. For example, if you want to search for
all data that have temperature measurements, you would have to choose
the data types TS-8, ODF-CTD, ODF-MTR, and so on. If you search
by keyword, you only have to select "TEMPERATURE."