Analysis of Stubble Burning Trends in Punjab and the Limitations of Satellite Detection
While government data suggests a 70% decline in stubble burning incidents in Punjab (from 36,663 in 2023 to 10,909 in 2024), experts warn that satellite limitations might be masking the true extent. Small, short-duration fires or those occurring between satellite overpasses often go undetected. Additionally, the total burnt area has not decreased as significantly as the fire count, indicating larger individual fires. Stubble burning remains a major contributor to air pollution in Northern India. Effective management requires a combination of thermal satellite data, optical sensors like Sentinel-2, and rigorous ground verification to assess actual emissions.
Key Points
- Punjab reported a 70% drop in fire incidents in 2024 compared to 2023, according to government data.
- Satellite sensors like MODIS and VIIRS may miss fires that are small, low-intensity, or occur late in the evening.
- Burnt-area estimation using optical sensors like Sentinel-2 provides a more accurate picture than simple fire counts.
- Stubble burning is driven by the short three-week window between paddy harvest and wheat sowing.
Exam Facts
- Reported fire incidents in Punjab: 10,909 (2024) vs 36,663 (2023).
- Satellites used for monitoring: MODIS, VIIRS, and Sentinel-2.
- The window between harvesting and sowing is roughly three weeks.
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