---
title: "Inter-Tropical Convergence Zone (ITCZ) Explained"
description: "The ITCZ is the equatorial belt where trade winds converge and rise, driving heavy rain; its seasonal shift controls the Indian monsoon. A core UPSC GS1 topic."
url: "https://modeldiplomat.com/learn/glossary/intertropical-convergence-zone"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Inter-Tropical Convergence Zone is the low-pressure belt near the equator where the northeast and southeast trade winds converge, producing rising air and intense rainfall.
- How does the ITCZ control the Indian monsoon?
- What is the difference between the ITCZ and the doldrums?
- Why do climate models struggle with a 'double ITCZ'?
- How is the ITCZ related to deserts?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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Example

In July 2023 the India Meteorological Department reported that the monsoon trough—the regional expression of the ITCZ—had shifted to the Himalayan foothills, triggering a "break monsoon" dry spell across central India before its southward return revived rainfall.

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