Automated Meteorological Data Acquisition System: Difference between revisions

Revision as of 23:30, 19 April 2008

Revision as of 20:34, 1 July 2008

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'''AMeDAS''' ('''''A''utomated ''Me''teorological ''D''ata ''A''cquisition ''S''ystem'''), commonly known in [[Japanese language|Japanese]] as "アメダス" (''amedasu''), is a high-resolution [[surface observation]] network developed by [[Japan Meteorological Agency]] (JMA) used for gathering regional weather data and verifying forecast performance. Begun operation on [[November 1]], [[1974]], the system consists of about 1,300 stations with automatic observation equipment. These stations, of which more than 1,100 are unmanned, are located at an average interval of 17 km throughout [[Japan]].

Observations at manned stations cover [[weather]], [[wind]] [[wind direction|direction]] and [[wind speed|speed]], types and amounts of [[Precipitation (meteorology)|precipitation]], types and base heights of [[cloud]]s, [[visibility]], air [[temperature]], [[humidity]], [[sunshine duration]], and [[atmospheric pressure]]. All of these (except weather, visibility and cloud-related meteorological elements) are observed automatically.

At unmanned stations, observations are performed every 10 minutes. About 700 of the unmanned stations observe precipitation, air temperature, wind direction and speed, and sunshine duration, while the other stations observe only precipitation.

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Apart from weather conditions, AMeDAS is also used in the observation of [[natural disaster]]s. Temporary observation points are set up in areas where there are signs of [[volcanic eruption]]s or [[earthquake]]s.

== External links ==

* [http://www.jma.go.jp/jma/indexe.html Official website of Japan Meteorological Agency]

{{Meteorological equipment}}

{{Earth-based meteorological observation}}

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