The researchers used satellite data to examine the relationship between sea ice concentration and cloud properties over the Arctic Ocean during the summers of 2003-2017. They found that the amount of low-level clouds increased in areas where sea ice had decreased.
"We found that as sea ice concentrations decreased from 100% to 50%, the amount of low-level clouds increased by about 20%," said lead author Dr. Dongdong Wang, an atmospheric scientist at the University of Oklahoma.
This increase in low-level clouds has several implications for the Arctic energy balance. Low-level clouds reflect sunlight back into space, which cools the surface. They also trap heat near the surface, which warms the air below.
The net effect of these changes is to cool the surface and warm the air above, which could have a significant impact on the Arctic climate.
"Our findings suggest that the loss of sea ice is leading to changes in cloudiness that could have a significant impact on the Arctic energy balance," said Wang. "These changes could further accelerate Arctic sea ice loss and contribute to global climate change."
In addition to the changes in low-level clouds, the researchers also found that the amount of mid-level clouds decreased as sea ice decreased. This decrease in mid-level clouds could also have an impact on the Arctic energy balance, but the researchers say more research is needed to fully understand the effects.
The findings from this study highlight the importance of understanding the interactions between sea ice and clouds in the Arctic. These interactions could play a key role in the future evolution of the Arctic climate.
"Our study provides new insights into the relationship between sea ice and clouds in the Arctic," said Wang. "This information is essential for improving our understanding of the Arctic climate system and its response to climate change."
