Kabushiki Kaisha Toshiba

Aya Namiki

Tetsuya Kobayashi

Fumihiko Mizutani

Takahiro Watanabe

An estimation apparatus includes an acquirer, a deriver, and a determiner. The acquirer acquires time-sequential observation data related to cloud-altitude. The deriver derives a first change in cloud altitude from at least a first altitude at a first time and a second altitude at a second time. The deriver derives a second change in cloud altitude from at least a third altitude at a third time and a fourth altitude at a fourth time. The determiner determines a cloud developmental stage based at least in part on the first and second changes in cloud altitude.

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Katsushika, Japan

Aya Namiki