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Section 4 follows with a description of the MARS command and section 5 explains the pseudo-meteorological vocabulary, i.e. the MARS language. It introduces the MARS request format and syntax. Then, it focuses on the structure of retrieve requests. MARS keywords lists keywords relevant to data retrieval and the most common products are reviewed, providing the MARS terms needed to name each data set.
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The following sections explain how to list archived data (section 9) and how to carry out computations in MARS.
The remaining part gives a few hints at tools not related to MARS but useful when dealing with retrieved data (section 11) and answers some frequently asked questions in section 12.
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