Updated "VIDEO SEMINARS".

The contents of the new video are:

“Weather and Sea Conditions Part 1”

Starting with this seminar, we will explain weather and sea conditions in four parts. In this seminar, we will explain global circulation of the atmosphere and air mass.

“Weather and Sea Conditions Part 2”

As part 2 of seminars on weather and sea conditions, we will discuss Extra-Tropical Cyclones. We will explain the potential energy and move on to introduce the life cycle of Extra-Tropical Cyclones as well as some precautions for navigation.