Inter- and Intra-Annual Variability in an Interactive Ocean-Atmosphere Climate System

交互式海洋-大气气候系统中的年际和年内变化

• 批准号: 8913261
• 负责人: David Houghton
• 金额: $ 49.4万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-15 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913261&HistoricalAwards=false
• 关键词: Inter; Intra; Annual; Variability; Interactive

This is a renewal grant to continue an investigation of climate variability as simulated by a low resolution atmospheric general circulation model (GCM) coupled to interactive upper oceans formulations. Both interannual and intra-annual aspects of the model climate will be examined. The PIs will continue the analysis of variability within two already completed 100 year seasonal integrations one performed with the atmospheric model coupled to a 50m deep upper ocean and the other performed with a prescribed annual cycle of observed ocean conditions. New experimental initiatives with more sophisticated upper ocean and sea ice models are also proposed. These involve 100 year seasonal integrations of the atmospheric model coupled to a prescribed variable depth upper ocean component, a prognostic mixed layer ocean formulation, a tropical-dynamical upper ocean model, and a improved sea ice parameterization. The PIs will focus on characterizing the interannual variability of (1) ocean surface temperature in tropical and extratropical latitudes of the Pacific and Atlantic Ocean and (2) sea ice area and thickness in polar latitudes. They will aim to identify cause/effect relationships between anomalies in different parts of the atmosphere-ice-ocean system. The studies of intra-annual variability will focus on bimodality in planetary scale atmospheric circulation features of middle latitudes and on transition shifts in the seasonal structures of atmospheric circulation and energetic. Intercomparison of the different experiments will identify the relative importance of individual ocean-atmospheric processes that produce climate variability. These processes include ocean-atmosphere energy exchange,mechanisms involving mixed layer and sea ice development, and internal ocean dynamics. This research is important because it seeks to improve understanding of how the ocean-ice-atmosphere system interacts to cause climate variability.

这是一份续期补助金， 低分辨率大气层模拟的气候变率 大气环流模式（GCM）耦合到交互式上层 海洋制剂。 年际和年内方面 气候模型将被检查。 PI将继续 两个已完成100年内变异性分析 季节积分，其中一个是用大气模式进行的 与50米深的上层海洋相结合，另一个则与 规定的海洋观测条件的年度周期。 新 更复杂的上层海洋和 还提出了海冰模型。 这些涉及100年 大气模式的季节积分， 规定的可变深度上层海洋组成部分，预报 混合层海洋公式，热带动力上层海洋 模式，并改进海冰参数化。 私家侦探会 重点是表征（1）海洋的年际变化 热带和热带外纬度地区的地表温度 太平洋和大西洋;（2）海冰面积和厚度 在极地纬度。 他们将致力于确定原因/影响 不同部分的异常之间的关系 大气-冰-海系统 年内研究 变化将集中在行星尺度的双峰性 中纬度及以上地区的大气环流特征 大气季节结构的转变 循环和精力充沛。 不同的相互比较 实验将确定个体的相对重要性 造成气候变化的海洋-大气过程。 这些过程包括海洋-大气能量 交换、涉及混合层和海冰的机制 发展和内部海洋动力学。 这项研究很重要，因为它试图改善 了解海洋冰大气系统如何相互作用， 导致气候变化。