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Activities of the Aerological Observations Division
 Upper-air Observation Using Radiosondes
Weather phenomena such as sunshine, rain, snow and wind near
the surface of the earth (which directly affect our daily lives) are closely
related to the large-scale movement of the upper atmosphere. This division
carries out aerological observation of the upper atmosphere at internationally
specified times everyday and immediately transmits the observation data
to the Japan Meteorological Agency to be used for weather forecasting.
| Type |
Element |
Time |
| Radiosonde |
Atmospheric pressure, Air temperature, Humidity,
Wind direction/speed |
0900, 2100 JST* |
Balloon launched 30 minutes before
observation time. |
| Ozonesonde |
Ozone amount, Atmospheric pressure, Air temperature,
Wind direction/speed |
1500 JST* Wednesday |
| In the event of severe weather conditions such
as typhoons, radiosondes are also released at 0300 JST* or 1500 JST*.
|
* Japan Standard Time (UTC+9)
Radiosonde
RS91(left), RS92SGPJ(right)
Ozonesonde
KC(left), ECC(right)
For various technical tests and research, sondes are sometimes
launched joined together.
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