抄録
The meteorological elements and the atmospheric electric field have been observed continuously for monitoring thunderclouds at two observation sites. In this paper the variations of these elements are described and analyzied qualitatively using auto-and mutual-correlation method. From the obtained results when the air current begins to flow downward the wind speed increases and the atmospheric temperature rises simultaneously. After about ten minutes the decending air current starts and the atmospheric pressure increases. This result agrees with the growing and vanishing model of a thundercloud.
