a. it's a high-pressure zone with rising air
is not true of the intertropical convergence zone (also known as the doldrums
The region where the northeast and southeast trade winds converge is known by sailors as the Intertropical Convergence Zone, sometimes known as the doldrums or the calms because of its repetitively windless conditions.
It rounds the planet close to the thermal equator, however the exact location changes with the seasons.
It is known as the near-equatorial trough when it is located close to the geographic Equator.
It is occasionally referred to as a monsoon trough as the Intertropical Convergence Zone ITCZ is dragged into and merges with a monsoonal circulation; this terminology is more prevalent in Australia and some regions of Asia.
The Intertropical Convergence Zone ITCZ is a ring of clouds that circles the globe close to the equator and is typically composed of thunderstorms.
Learn more about intertropical convergence zone here
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