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大気境界層
Wikipedia definition
1. Planetary boundary layerThe planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL), is the lowest part of the atmosphere and its behavior is directly influenced by its contact with a planetary surface. On Earth it usually responds to changes in surface forcing in an hour or less. In this layer physical quantities such as flow velocity, temperature, moisture etc. , display rapid fluctuations and vertical mixing is strong.
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