The Japan Meteorological Agency under the Meteorological Institute analysis found that sudden local heavy rainfall the cumulonimbus below will produce the flow of cooling air, and warm and humid air encounters may generate new cumulonimbus, giving rise to new local heavy rainfall. This finding can help to improve weather forecast level.
Meteorological Institute Research Office the Nan research has always been Japan's Asahi Shimbun explains, the cold air flow from the marine landing of warm air and land meet, forming a sea breeze front. After the warm and humid air updraft, the formation of cumulonimbus, followed by sudden localized heavy rainfall occurs. Heavy rains claimed heat in the atmosphere, so that cumulonimbus produce cold air group below, the cold air sinking encountered another warm and humid air will be at the junction of the updraft, thus the formation of the new cumulonimbus lead new locally heavy rainfall.
Earlier it was pointed out that the sudden local heavy rainfall possible chain occurs, and this is the first by a research institute confirmed by the observation of this phenomenon occurred mechanism.
Sudden local heavy rainfall and tornadoes in a very short time a weather phenomenon occurred in a small range, accurate prediction is very difficult.
Nan Kenichi sudden local heavy rainfall occurred near likely to chain locally heavy rainfall occurs, the parties concerned must be seriously.
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