This video is taken from a 52-minute marine weather course In this excerpt, we see: 00:00 Temperature differences and convective cells 01:02 Formation of atmospheric depression 02:23 Formation of high pressure areas, anticyclones 03:53 Movement of air from high to low pressure 05:52 The role of the Coriolis force 06:20 Direction of rotation of air masses - Anticyclone and depression 08:10 Buys-Ballot's law Here is the detailed summary of this marine weather course (52 minutes): 1. Air masses 1.1 Nature and classification of air masses 1.2 When air masses meet - Fronts and disturbances 1.3 Atmospheric pressure and lines of equal pressure 1.4 Direction of rotation of air masses and Buys-Ballot's law 1.5 Ridges and Talweg 2. Signs to watch for 2.1 Cloud ceiling – Cirrus 2.2 Pressure drop and wind shift 2.3 High horizontal pressure gradient 3. Weather reports 3.1 Arrows and barbs on GRIB files 3.2 Symbols and terms used in reports 3.3 Description of wind strength and sea state 3.4 Weather report zones 3.5 BMS emission This course is itself part of a high-quality, demanding and very comprehensive offshore license training course (18 courses, 13 hours of videos, multiple tests and automated exams). This training is ideal for those who want to train efficiently and at their own pace, from home. The level is well above the minimum required (allow a minimum of two to three weeks to complete the entire training). Your registration includes unlimited access, as well as my direct and personalized support. To find out more about the detailed content and all the procedures that will allow you to pass your offshore license as a private candidate, go to: https://formations-maritimes.fr/ Here is the list of courses that make up this offshore license training: Course 1 – Basic information on the nautical chart (29 minutes + test) Course 2 – Symbols, abbreviations and terms used on maps (43 minutes + test) Course 3 – Representation of lights and markings on the map (36 minutes + test) Course 4 – Grid latitudes – longitudes – Parallels – meridians (44 minutes + test) Course 5 – Division of degrees, nautical miles and knots (24 minutes + test) Course 6 – Calculating the Distance – Speed ​​– Time ratio (22 minutes + test) Course 7 – Rose – Routes and speeds – Position in relation to a landmark (43 minutes + test) Course 8 – Mastering your navigation rule (41 minutes + test) Lesson 9 – Positioning yourself with bearings (20 minutes + test) Lesson 10 – Faith line and true heading – Notion of bearing (25 minutes + test) Lesson 11 – Declination and deviation – Magnetic variation (57 minutes + test) Lesson 12 – Calculating wind drift (33 minutes + test) Lesson 13 – Currents – Correcting a heading – Asserting a route (47 minutes + test) Lesson 14 – Calculating tides 1 (61 minutes + test) Lesson 15 – Calculating tides 2 (60 minutes + test) Lesson 16 – Meteorology (52 minutes + test) Lesson 17 – Electronic navigation aid – GPS (52 minutes + test) Lesson 18 – Regulations – Safety equipment for offshore navigation (51 minutes + test) You will find a detailed summary and excerpts from each course on the website. There is also training offered to see concretely how this is presented, go to the home page: https://formations-maritimes.fr/ At your disposal if you have any questions! Patrick Belliot