🔆 Key Takeaways: Madden-Julian Oscillation (MJO) and Indian Monsoon

✅ What is MJO?
• A moving system of winds, clouds, and pressure circulating eastward near the equator.
• Discovered in 1971 by Roland Madden and Paul Julian.
• Crucial for tropical rainfall patterns, including the Indian monsoon.

✅ Structure and Movement:
• Moves eastward at 4–8 m/s, completing a cycle every 30–60 days (sometimes up to 90 days).
• Two phases:
• Active Phase: Brings rainfall and storms.
• Suppressed Phase: Causes below-average rainfall.

✅ Relevance to Indian Monsoon:
• Strongly influences monsoon onset and intensity, especially during active phase.
• Early 2024 monsoon onset (May 24 Kerala, May 26 Mumbai) partly due to strong MJO.

✅ Cyclone and Rainfall Connection:
• Active MJO triggers tropical cyclones, supporting monsoon initiation (e.g., June 2015 had 20 days of rain linked to MJO).

✅ Interaction with El Niño:
• MJO and El Niño may coincide but are not causally linked; both affect rainfall unpredictably.

✅ Geographical Impact:
• Influences weather between 30°N and 30°S; India lies in this zone, making it vulnerable to MJO-driven rainfall variations.

#climate #monsoon

🔆 North America’s Impact on Indian Monsoon
✅ Climate models show North America strengthens South Asian monsoon rainfall.
✅ Summer warming alters global air circulation, boosts North Pacific high-pressure system, and shifts the Hadley circulation.
✅ This drives moisture-laden winds towards Asia, enhancing rainfall.
✅ For India, North America’s role may even outweigh Tibet’s influence.

🔆 Türkiye Earthquakes (Feb 2023) 🌍
✅ Quakes disturbed regions 1,000 km away in the West Caspian.
✅ Satellite + seismic data showed mud volcano eruptions & fault slips.
✅ Energy released = magnitude 6.1 quake.
✅ Many sites near hydrocarbon fields, linking crust fluids & fault activity.

#Monsoon #ClimateChange #Earthquake #Geography