Negotiamini Media
Truth is Powerful

Multi-sphere interactions underlie impacts of the Arctic on Eurasian climate change

2

Schematic view of the multisphere interactions. Credit: Xie Yongkun Observations suggest a warming trend in the Arctic, and a cooling trend in Eurasia during the past several decades. Is there a cause-and-effect relationship in this pattern? The question has been hotly debated for quite a while.

A study published in Climate Dynamics , by researchers from the Institute of Atmospheric Physics of the Chinese Academy of Sciences and Lanzhou University, gives clues to the question. It suggests that the Arctic climate is one of the factors driving the overall trend and decadal variability of Eurasian temperature.

The researchers proposed a dynamic and thermodynamic coupling view of how the Arctic drives Eurasian climate variability and underlying multi-sphere interactions. Additionally, they compared cases in various time scales, i.e., overall trend, decadal and interannual variability.

“In summer, the key factors in multi-sphere interactions are sea ice, surface solar radiation, and subsurface ocean heat uptake,” said Dr. Xie Yongkun, the lead author of the study. “In winter, the key factors are sea ice, surface sensible heat, diabatic heating of the atmosphere, interaction between the Arctic and mid-latitude, and large-scale circulation.”

The story, according to the team, starts from summer when absorption of solar radiation by the subsurface […]

Click here to view original web page at phys.org

Comments
Loading...