Application: GS 1 & 3
1. Overview of Monsoon Season ๐ง๏ธ
- The monsoon season in India typically lasts from June to September.
- This year, the monsoon season ended with 94% overall rainfall, making it the eighth consecutive year of relatively normal monsoons. ๐ฆ๏ธ
2. Apparent Consistency vs. Hidden Variability ๐ฆ๏ธ๐ก๏ธ
- On some days, rainfall intensity reached levels of 100 mm or more, causing flooding. ๐
- In contrast, there were prolonged dry spells, with some areas experiencing little to no rain for weeks. โ๏ธ
3. Erratic Rainfall at District Level ๐๏ธ
- Out of the nearly 85,000 district rain-days, only around 5,100 days had normal daily rainfall. ๐ฆ๏ธ
- Large deficits were observed on approximately 51,000 district rain-days. โ๏ธ
4. Extreme Rainfall Events ๐ช๏ธ
- The season witnessed the second-largest number of extreme rainfall events in the past five years, with several districts receiving 60% or more rainfall than normal. ๐ฆ
5. Regional Variations ๐
- Northwest and central parts of India received 100% or more rainfall during the season. ๐
- Eastern and North-Eastern regions, however, saw their total monsoon rainfall at barely 80%. โ๏ธ
6. State-Specific Rainfall Deficits ๐ง
- Bihar, Jharkhand, and West Bengal all faced deficits of over 20% in their monsoon rainfall. ๐ง๏ธ
- States in the North-East, such as Nagaland, Manipur, Mizoram, and Tripura, also had similar deficits. โ๏ธ
7. Kerala's Rainfall Decline ๐ด
- Kerala's monsoon rainfall this year was 132.7 cm, the lowest in 12 years. ๐ง๏ธ
- The phenomenon of declining rainfall in Kerala is not well-explained and has raised concerns. ๐ค
8. Complex Factors Affecting Monsoon ๐
- El Nino events have historically resulted in large rainfall deficits during the monsoon. ๐ฅ
- An extended cyclone on the western coast in June and heavy rainfall in the northern states helped mitigate the impact of El Nino. ๐
9. Uncertainty in Monsoon Due to Climate Change ๐ก๏ธ๐
- Climate change contributes to increased uncertainty in monsoon patterns, making predictions more challenging. ๐ช๏ธ
- Even with efforts to reduce greenhouse gas emissions, weather unpredictability is expected to persist. ๐
10. Coping Mechanisms ๐จ
- Disaster preparedness includes early warning systems and evacuation plans. ๐ง
- Infrastructure improvements should focus on better drainage systems to address urban flooding. ๐๏ธ
- Climate resilience efforts should involve designing infrastructure to withstand extreme weather events.