Role of radiative forcing on the sea ice melt-growth cycle in a changing Arctic marine environment - Northern Research Supplement

不断变化的北极海洋环境中辐射强迫对海冰融化生长循环的作用 - 北方研究增刊

• 批准号: 444872-2013
• 负责人: Ehn, Jens
• 金额: $ 1.27万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Northern Research Supplement
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=535704
• 关键词: Role; radiative; forcing; sea; ice

The Arctic sea ice cover is in rapid decline due to global warming with yet another new record low reached in 2012. The diminishing ice cover is having a discernible impact on the polar marine environment. However, the extent of this impact on future changes to climate, carbon cycling and ecosystems remains uncertain. At the root is how surface radiative forcing affects changes in sea ice properties, and how these changes in turn modulate the forcing. Such interactions form the base of complex climate feedbacks operating in the Arctic. Considering the vastness of the area of sea ice (~10 million km2 or roughly the size of Canada) that forms and then melts each year, the importance of a comprehensive understanding of the processes driving this cycle cannot be overstated.

由于全球变暖，北极海冰覆盖率迅速下降，2012年又创新低。冰盖的减少对极地海洋环境产生了明显的影响。然而，这对未来气候变化、碳循环和生态系统的影响程度仍不确定。从根本上讲，表面辐射强迫如何影响海冰特性的变化，以及这些变化如何反过来调节强迫。这种相互作用构成了北极复杂气候反馈的基础。考虑到每年形成然后融化的海冰面积广阔（约1 000万平方公里或大致相当于加拿大的大小），全面了解推动这一周期的过程的重要性怎么强调都不过分。