🔆 Winter Weather in India: Key Drivers & Effects

📍 1. Surface Pressure & Winds
✅ High-pressure zone forms in Central & West Asia.
✅ Cold continental winds blow into India from the north.
✅ These collide with trade winds → unstable zone forms.
✅ Result: Northwest India experiences dry, cold North-Westerlies.

📍 2. Jet Stream & Upper Air Circulation
✅ Westerly jet streams dominate Asia in winter.
✅ Tibetan Himalayas split jet into two:
 🔹 North branch flows over Tibetan Plateau.
 🔹 South branch crosses south of the Himalayas.
✅ Subtropical westerly jet brings winter rain to northwest India.

📍 3. Western Disturbances & Cyclones
✅ Western disturbances (from the Mediterranean) hit north & northwest India.
✅ Bring light winter rain → great for wheat crops.
✅ Tropical cyclones still possible in Oct–Nov, driven by easterlies.
✅ Hit east coast states – TN, AP, Odisha with heavy rain + wind.

#Geography

Mapping upsc & PSC

Forwarded from UPSC Mapping Prelims Mains

🔆 Winter Weather in India: Key Drivers & Effects

📍 1. Surface Pressure & Winds
✅ High-pressure zone forms in Central & West Asia.
✅ Cold continental winds blow into India from the north.
✅ These collide with trade winds → unstable zone forms.
✅ Result: Northwest India experiences dry, cold North-Westerlies.

📍 2. Jet Stream & Upper Air Circulation
✅ Westerly jet streams dominate Asia in winter.
✅ Tibetan Himalayas split jet into two:
 🔹 North branch flows over Tibetan Plateau.
 🔹 South branch crosses south of the Himalayas.
✅ Subtropical westerly jet brings winter rain to northwest India.

📍 3. Western Disturbances & Cyclones
✅ Western disturbances (from the Mediterranean) hit north & northwest India.
✅ Bring light winter rain → great for wheat crops.
✅ Tropical cyclones still possible in Oct–Nov, driven by easterlies.
✅ Hit east coast states – TN, AP, Odisha with heavy rain + wind.

#Geography

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516 viewsJun 20 at 14:09