Soundings, C-band Radar, Data Synthesis and Model Intercomparison for the EPIC2001 Stratocumulus Study

EPIC2001 层积云研究的探测、C 波段雷达、数据合成和模型比对

• 批准号: 0082384
• 负责人: Christopher Bretherton
• 金额: $ 17.99万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0082384&HistoricalAwards=false
• 关键词: Soundings; band; Radar; Data; Synthesis

EPIC (Eastern Pacific Investigation of Climate processes in the coupled ocean-atmosphere system) is an activity of the US CLIVAR Program. EPIC 2001 consists of four components focussing on (i) intertropical convergence zone/warm pool phenomena; (ii) cross-equatorial inflow into the intertropical convergence zone; (iii) upper ocean structure and mixing and (iv) an exploratory study of boundary layer cloud properties in the southeasterly tradewind regime. The field phase of EPIC 2001 is scheduled for a 6-week period during the interval Sept 1 to Oct 15, 2001. In addition to the eight awards made by ATM, this collaborative research has awards made by NSF/OCE and NOAA/OGP.During the field phase, the PIs will collect data from GPS soundings and from scanning C-band radar permanently mounted aboard R/V Ron Brown. The boundary layer and cloud structure documented by these and other observations taken on the cruise will be compared with that from reanalyses and selected general circulation models. A goal of the integrative data analysis is to assess whether precipitation processes are significantly influencing cloud thickness and albedo over large spatial scales, and if so, under what environmental conditions. The work is important because it will improve understanding and modeling of climate variability over the eastern tropical Pacific.

EPIC（Eastern Pacific Investigation of Climate Processes in the Coupled Ocean-Atmospheric System）是美国气候变化研究计划（CLIVAR Program）的一项活动。EPIC 2001由四个部分组成，重点是（i）热带辐合区/暖池现象;（ii）进入热带辐合区的越赤道气流;（iii）海洋上层结构和混合;以及（iv）东南信风区边界层云特性的探索性研究。EPIC 2001的实地调查阶段定于2001年9月1日至10月15日期间进行，为期6周。除了大气管理局颁发的八个奖项外，这项合作研究还获得了美国国家科学基金会/海洋环境工程处和美国国家海洋和大气管理局/海洋地球物理计划的奖项。在实地考察阶段，研究人员将从全球定位系统探测和永久安装在R/V罗恩布朗号上的C波段扫描雷达收集数据。这些观测和航行中的其他观测所记录的边界层和云结构将与再分析和选定的大气环流模式所记录的边界层和云结构进行比较。综合数据分析的一个目标是评估降水过程是否在大的空间尺度上显著影响云厚度和云量，如果是，在什么环境条件下。这项工作很重要，因为它将改善对热带太平洋东部气候变化的理解和建模。