Intertropical Convergence Zone (ITCZ) - What, Why, How, When?
Mr Rufaeel
https://www.youtube.com/watch?v=SGkvEk0-hoU

Transkript (automatisch erstellt)

0:00 the intertropical convergence zone or itcz pronounced itch is a major factor in explaining why some areas get human tropical climates seasonally as opposed
0:09 to constantly first let's clear up a common misconception it's common to think that the itcz is
0:16 the equator but this is false the itcz is the name given to the area in the tropics characterized by low pressure
0:26 understanding what causes this low pressure will in turn explain how the itcz plays a major role in creating rainy seasons for countries like india
0:34 in one month then a dry season six months later to do this imagine a perfectly centered universe where the earth is balanced
0:43 exactly along its center with a zero degree axle tilt the earth is unaffected by any planetary gravitational pull
0:52 so earth's path around the sun is perfectly equidistant forever in this example the sun will always focus on solar energy directly and
1:02 evenly at the equator this heat will cause the air to expand become lighter which will then rise this rising air will create low pressure
1:12 which will encourage cloud formation and produce high rainfall the areas north and south of the equator will receive the sinking air from the
1:20 equator leading to high pressure skies which prevents cloud formation ultimately leading to low rainfall if these perfect conditions were
1:30 constant this area will always have a wet climate and this area will always have a dry climate
1:37 all year round the opportunity for seasons wouldn't exist now let's add a splash of realism by
1:46 adding earth's 23 degree tilt with this 23 degree tilt you'll notice that the tropic of cancer receives more direct sunlight during the month of july
1:55 whereas the tropic of capricorn receives more direct sunlight during the month of january now if the intertropical convergence
2:02 zone is the area of low pressure and low pressure is created due to the concentration of sunlight then in july the itc-z isn't going to be
2:11 along the equator no it'll be in the north promoting high rainfall
2:17 essentially because the concentration of sunlight varies per season depending on the position of the earth in relation to the sun
2:24 so too will the itcz vary throughout the year this creates areas of low pressure and high rainfall that shifts from the
2:31 tropic of cancer to the tropic of capricorn now for the big picture we'll start in march when the itcz is
2:39 along the equator as the year progresses and the sun is concentrating more of its energy towards tropic of cancer
2:46 so too will the itcz move to meet the area of solar concentration bringing with it high levels of precipitation looking at a climate graph from india
2:56 you'll notice high levels of rainfall during the month of july as a result the shift to the itc z to the north in july leave the tropic of capricorn
3:05 lacking the solar concentration it needs for low pressure which means that high rainfall enjoyed in the north isn't around in the south so the south will
3:14 experience a dry season moving through the year the sun will begin to concentrate its energy towards the tropic of capricorn by january and
3:23 now the south will experience a rainy season while the north will experience a dry season
3:32 this can be noticed in indonesia's climate graph showing high levels of rainfall in january as a result
3:40 and now you know how the intertropical convergence zone can create seasonal human tropical climates by shifting low pressure skies between the tropic of
3:47 cancer and the tropic of capricorn well done thank you for watching please support the channel by leaving a
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