Affiliation:
1. a Department of Physics, School of Energy Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, India
2. b Department of Mathematics, School of Technology, Pandit Deendayal Energy University, Gandhinagar, Gujarat, India
Abstract
Abstract
During the COVID-19 lockdown, large industries in the Russian Arctic region were closed for two months, leading to a significant reduction in anthropogenic aerosol emissions. This decline in aerosols resulted in a decrease in the human-made aerosol cooling effect. The strict lockdown measures implemented after 18 March 2020 caused a drastic downward fall in considered aerosols. Consequently, there was an impact on air temperature, with temperature differences exceeding 3 K in November and February, while clear-sky top net solar flux values were greater than 13 W m−2. Throughout the lockdown period, the Russian Arctic's annual area average sea ice concentration was 7.72% in 2019 and 7.64% in 2020. The decrease in radiation-scattering pollutants contributed to an increase in global warming. Some pollutants, like sulfur, carbon dioxide, and methane, produced a cooling effect by mitigating greenhouse gases, which could affect the speed of sea ice melt. However, due to the short duration of the pandemic, it remains challenging to determine whether the aerosol changes accelerated or decelerated the sea ice melting process.
Subject
Management, Monitoring, Policy and Law,Atmospheric Science,Water Science and Technology,Global and Planetary Change