This zone to which ground winds flow towards the region of maximum energy influx is the ITCZ and because the zone of maximum solar energy influx wanders, the ITCZ flows. Use MathJax to format equations. The seasonal shifts in the ITCZ help drive the dry and rainy seasons in the tropics, while longer-lasting changes can mean damaging floods for some, and withering drought for others. It moves on an annual cycle (following the sun) but does not follow a line of latitude since it is modified by the presence of land and sea. Barely a week goes by these days in the Northern Hemisphere without the jet stream being mentioned in the news, but rarely do such news items explain in detail what it is and why it is important. Why do the trade winds cover such a large part of the globe? However, the mean or average position of the ITCZ is … The Intertropical Convergence Zone, or ITCZ, is the region that circles the Earth, near the equator, where the trade winds of the Northern and Southern Hemispheres come together. Everything we know about how, when & why the weather in Costa Rica is like it is. Hello, as an amateur observer (having difficulty to read the technical part of this article) I wonder if we are seeing the southern hemisphere jet streams spread out over a far wider area than before and particularly in Northerly direction (up to about 10 degrees South especially over the Pacific and Atlantic). During the northern hemisphere summer, the winds from the northern hemisphere sometimes change direction from NE to SW. The net atmospheric energy input near the equator is the small residual (~20 W m2) of large cancellations between absorbed shortwave radiation (~320 W m2), emitted longwave radiation (~250 W m2), and oceanic energy uptake (~ 50 W m2). Algorithm for simplifying a set of linear inequalities. Acronym of ITCZ is "Inter Tropical Convergence Zone". In the US, we are interested in the ITCZ primarily because, under certain circumstances, tropical depressions moving … It follows the suns rays north and south of the equator The Coriolis Effect deflects moving objects (such as wind) in a _____ direction in the northern hemisphere and a _______ direction in the southern hemisphere. It increases the size of the polar high pressure region. Acronym of ITCZ is "Inter Tropical Convergence Zone". Due to the storms collected in this area, it makes it hard for aircraft to fly over the zone and also for a ship Be the first to answer! Most research articles have subjective definitions. Marked by the Intertropical Convergence Zone (ITCZ), it is north of the equator during the northern hemisphere summer months and moves south of the equator only in some areas during the southern hemisphere summer. The ITCZ is a meteorlogical feature which is a cloud belt around the tropics. Where is the ITCZ positioned in a) July b) January. It tends to move It is a zone of low pressure area near the equator where the convergence of two easterly winds originating from the both northern and southern hemispheres. that cause and affect the monsoons received by India. It is a region of clouds, rain, low level convergence and rising air. Message: The meteorological equator is shifted north of the equator much of the time over much of the globe. And it is north eastern and south eastern winds that converge not south western winds. Do the winds move toward the high-pressure area or away from it? The ITCZ follows the Sun north and south of the equator as do the monsoons. … Making statements based on opinion; back them up with references or personal experience. It tends to pass over the equator sometime roughly near the spring and fall, ideally, and would be maybe expected to spend equal amounts of time in northern and southern hemispheres. (The line at which northern trades (NE direction) and southern trade winds (from the SE roughly) converge. Why the Indian Monsoon doesn't start in the north? On a broader scale the ITCZ and monsoons are related. I am trying to recall what I did as a 14 year old... @gansub It is there in the class 9 NCERT geography book, chapter 4, page 30. It is not only the intertropical zone but everything that moves with the seasons. Because of the apparent movement of the Sun. 2000, Haug et al. Draw and label approximate bands on the world map where you might expect to … At the spring and fall equinox it coincides with the equator. You can calculate that information, e.g., from TRMM data. On the eastern side, though, air becomes cooler since around midnight sunshine has ended nearly 4, 5, or 6 hours ago. 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