摘要
在全球变暖的背景下,北极海冰在发生快速变化,海冰覆盖范围明显减小,厚度显著变薄,积雪/海冰—反照率正反馈机制在此背景下变得愈发重要。气候系统和单一海冰模式采用了从简单到复杂的海冰反照率参数化方案。首先对模式中的海冰反照率参数化进行了回顾,并结合对现有卫星反照率产品问题的分析,概述了前人对参数化的评估研究工作。在此基础上进一步讨论了气候模式中海冰反照率参数化方案存在的问题,一方面目前的反照率参数化对海冰融池和冰间水道等物理过程的考虑还不够完善,另一方面反照率参数化方案的发展受到观测数据可用性的制约。最后对参数化的发展方向进行了初步探讨。
Associated with global warming, the Arctic sea ice has been undergoing rapid changes for the three decades, including the decline of sea ice extent and thinning of sea ice thickness. As a result, the snow/sea ice-albedo positive feedback mechanism is becoming more and more important. Currently, a diversity of sea ice albedo parameterizations are used in climate system models and standalone sea ice models, ranging from simple to complex. In this paper, we reviewed previous studies on the evaluations of the snow/ice albedo parameterizations, and discussed some problems of the satellite-derived surface albedo for the ice covered ocean. We put forward some ongoing issues related to further developments of the albedo parameterizations as climate warms, including melt ponds and leads. Also, we discussed the potential impacts of the lack of observational data on the development of the albedo parameterization.
出处
《地球科学进展》
CAS
CSCD
北大核心
2010年第1期14-21,共8页
Advances in Earth Science
基金
国家自然科学基金重点项目"北极海冰快速变化及其天气气候效应"(编号:40930848)
国家科技支撑计划重点项目"南大洋海冰监测与冰-海耦合模式研究"(编号:2006BAB18B03)
国际极地年中国行动专项项目"北极冰-气能量交换过程及通量参数化方法研究"(编号:IPY2008-P0504002-03)资助
关键词
海冰
反照率
参数化
气候模式
Sea ice
Albedo
Parameterization
Climate model.
作者简介
杨清华（1983-），男，山东潍坊人，助理研究员，主要从事极地环境预报研究．E-mail：yqh@nmefc．gov．cn
