The research article was recently published in the prestigious earth and environmental sciences journal, Journal of Geophysical Research—Atmosphere.
The study was conducted using black carbon data generated by co-author RS Singh and his group at IIT (BHU) in the department of Chemical Engineering under the Aerosol Radiative Forcing over India (ARFI) program of the Space Research Organization. India.
For the first time, an analysis of a decade-long measurement of black carbon mass concentration was carried out at a representative location of the Central Indo-Gangetic Plain, Varanasi, from 2009 to 2021 to understand its physical, optical and radiative.
The study has found a consistent average post-monsoon decline of 1.86 micrograms per cubic meter and a pre-monsoon average decline of 0.31 micrograms per cubic meter.
The study considered relevant data from a period of 13 years and aims to measure changes in the atmosphere caused by polluted and dangerous black carbon in Varanasi and the central Indo-Gangetic plains.
Variable effects were also observed in summer, winter and monsoon seasons.
The study observed a reduction in the rise in atmospheric temperature due to black carbon.
"From 2009 to 2012, the mass concentration of black carbon was found to increase from an annual average of approximately nine micrograms per cubic meter of air during 2009 to an annual average of approximately 18 micrograms per cubic meter of air volume in 2012. The highest value was recorded in 2012, followed by a gentle decline until 2021, when the average mass concentration of black carbon was approximately 5.5 micrograms per cubic meter of air volume. In 2020, the highest average value was recorded. low of about 4.5 micrograms per cubic meter of air volume," Srivastava said.
Black carbon levels averaged 14.67 micrograms per cubic meter during the winter, while during the monsoon levels fell to an average of 4.4 micrograms per cubic meter.
Higher levels of black carbon were recorded in winter due to local factors such as biomass burning, fossil fuel use and adverse dispersal.
Seasonal black carbon levels also showed a steady decline, with an average post-monsoon decline of 1.86 micrograms per cubic meter and an average pre-monsoon decline of 0.31 micrograms per cubic meter.
The study was conducted using black carbon data generated by co-author RS Singh and his group at IIT (BHU) in the department of Chemical Engineering under the Aerosol Radiative Forcing over India (ARFI) program of the Space Research Organization. India.
For the first time, an analysis of a decade-long measurement of black carbon mass concentration was carried out at a representative location of the Central Indo-Gangetic Plain, Varanasi, from 2009 to 2021 to understand its physical, optical and radiative.
The study has found a consistent average post-monsoon decline of 1.86 micrograms per cubic meter and a pre-monsoon average decline of 0.31 micrograms per cubic meter.
The study considered relevant data from a period of 13 years and aims to measure changes in the atmosphere caused by polluted and dangerous black carbon in Varanasi and the central Indo-Gangetic plains.
Variable effects were also observed in summer, winter and monsoon seasons.
The study observed a reduction in the rise in atmospheric temperature due to black carbon.
"From 2009 to 2012, the mass concentration of black carbon was found to increase from an annual average of approximately nine micrograms per cubic meter of air during 2009 to an annual average of approximately 18 micrograms per cubic meter of air volume in 2012. The highest value was recorded in 2012, followed by a gentle decline until 2021, when the average mass concentration of black carbon was approximately 5.5 micrograms per cubic meter of air volume. In 2020, the highest average value was recorded. low of about 4.5 micrograms per cubic meter of air volume," Srivastava said.
Black carbon levels averaged 14.67 micrograms per cubic meter during the winter, while during the monsoon levels fell to an average of 4.4 micrograms per cubic meter.
Higher levels of black carbon were recorded in winter due to local factors such as biomass burning, fossil fuel use and adverse dispersal.
Seasonal black carbon levels also showed a steady decline, with an average post-monsoon decline of 1.86 micrograms per cubic meter and an average pre-monsoon decline of 0.31 micrograms per cubic meter.
