A importância da climatologia para a navegação polar

Abstract

Navigate icy waters is a challenge for even the most experienced sailor. Knowing how to choose the best defeat, ie, one that will be safer and simultaneously faster and more economical is essential when you want to carry over the polar regions. Besides having the most appropriate equipment and a hull strengthened to face any difficulties during the trip. Thus, the study and understanding of the climate of these regions are of paramount importance to perform a safer,quicker andmore precise navigation. As well, knowing how to define the best kinds of weather forecasting and navigation aids that will be useful during crossings, taking into accountthatrecent studies have proved that a variation of the sea level in a cyclical manner that may affect existing routes or the appearance new routes at the poles. This study is based on the existence of a lunar cycle of 18.6 years which makes the inclination of both moon’saxis as the axis of the earth varies with respect to the axis that contains the sun and other planets. Thus, when we reached tipping point referring to 28.6 °, the moon raises the sea surfacegenerating a hydraulic gradient which causes a variation in the currents carrying heat from the tropics to the poles. That way, you can ensure that the polar regions are affected by what happens in other regions of the planet Earth, as well as what happens in the polar areas also affects the rest of the world. Another factor that has the ability to influence the climate of all regions of the world is the Pacific Decadal Oscillation (PDO), sincethe Pacific Ocean is about a thirdof the Earth's surface andits next cycle corroborates the theory previously explained. In conclusion, one can say that the variation in sea level and its consequent increase has no relation with the anthropological actions, but with a greater transport of sensible heatfrom the equatorial region to the high latitude regions, caused by the lunar cycle and also variations due to natural cycles of the North Atlantic.