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

• 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: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=597012
• 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年又有新的记录较低。冰覆盖量的减少是对极地海洋环境产生的明显影响。但是，这种影响对气候，碳循环和生态系统的未来变化的影响仍然不确定。根部是表面辐射强迫如何影响海冰特性的变化，以及这些变化如何调节强迫。这种相互作用构成了在北极运行的复杂气候反馈的基础。考虑到海冰地区的广阔（约1000万公里或大约是加拿大的大小），然后每年融化，对推动该周期的过程的全面理解的重要性不能被夸大。