Automated Meteorological Data Acquisition System: Difference between revisions

Revision as of 08:44, 21 November 2017

Revision as of 08:44, 21 November 2017

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[[File:Expo AMeDAS-2005-7-22.jpg|thumb|AMeDAS]]

'''AMeDAS''' (automated meteorological data acquisition system)''', commonly known in Japanese as "アメダス" (''amedasu''), is a high-resolution [[surface observation]] network developed by the [[Japan Meteorological Agency]] (JMA) used for gathering regional weather data and verifying forecast performance. The system began operating on 1 November 1974, and currently comprises 1,300 stations throughout Japan (of which over 1,100 are unmanned), with an average separation of {{convert|17|km|mi|abbr=on}}.

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