Journal of Agricultural Meteorology
Online ISSN : 1881-0136
Print ISSN : 0021-8588
ISSN-L : 0021-8588
A Study on Relation Between “Yamase” Wind and Solar Irradiation
Nobuyoshi SASAKITakeharu BOKURA
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1970 Volume 26 Issue 3 Pages 143-146


Yamase winds are known as a special weather when wind brows from the Pacific as easterly wind accompanied with humid air on the Pacific coast in Aomori prefecture. In the present paper, the relationship between solar radiation and the amount of moisture when Yamase wind blew was investigated.
The solar irradiation at the ground in Yamase weather is decreased by the increase of the amount of moisture in the air when the velocity of eastern wind is beyond 2m/sec. The wind velocity suggests one of the main factors which cause the deduction of solar irradiation.
Therefore this would be caused by advection fog. Solar irradiation measured on Yamase weather is lower than that on a normal day.
Investigating data of air temperature and solar irradiation on these days, we would be able to conclude that the rising of air temperature is restrained by the small amount of solar irradiation caused by Yamase wind.

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