Use of geostationary and polar-orbiting satellites to estimate emissions from biomass burning in shifting cultivation prevalent areas of Northeast India
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View abstract on PubMed
Summary
This summary is machine-generated.Biomass burning from shifting cultivation in Northeast India releases significant air pollutants. This study found emissions were much higher than previously estimated, especially during the COVID-19 pandemic.
Area Of Science
- Atmospheric Science
- Environmental Science
- Remote Sensing
Background
- Biomass burning is a key source of atmospheric gases and particulate matter.
- Shifting cultivation, though declining, significantly contributes to air pollution in Southeast Asia.
- Northeast India (NEI) is a crucial region for shifting cultivation and biomass burning.
Purpose Of The Study
- To calculate accurate emission estimations from shifting cultivation in NEI during peak burning seasons.
- To address underestimations in previous emission data for the region.
- To analyze emission changes during the COVID-19 pandemic.
Main Methods
- Combined diurnal fire data from Himawari-8 satellite with fire radiative power (FRP) from VIIRS-SNPP.
- Focused on shifting cultivation-prevalent areas in NEI during the peak biomass burning season.
- Compared dry matter burned (DMB) with existing emissions databases like GFEDv4.1.
Main Results
- Emissions included substantial amounts of CO2, CO, PM2.5, and BC.
- Dry matter burned (DMB) was 1.9-2.2 times higher than GFEDv4.1 estimates.
- Fire activity and emissions significantly increased during the initial years of the COVID-19 pandemic.
Conclusions
- Shifting cultivation in NEI is a more significant source of air pollution than previously recognized.
- The methodology provides a more accurate assessment of biomass burning emissions.
- The COVID-19 pandemic correlated with increased fire activity and emissions in the region.
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