Diurnal Evolution of Hawaiian Rain Band

夏威夷雨带的昼夜演变

• 批准号: 8919420
• 负责人: Yi-Leng Chen
• 金额: $ 15.29万
• 依托单位: University of Hawaii
• 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: 1990-07-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919420&HistoricalAwards=false
• 关键词: Diurnal; Evolution; Hawaiian; Rain; Band

Due to the consistency of the formation of rainbands, the Island of Hawaii is an excellent natural laboratory for the study of the interactions of the larger scale flow with mountainous terrain. An experiment held during the Summer of 1985 and subsequent numerical modelling studies have led to a new theory on the formation mechanisms of the rainbands off the east coast of the Big Island. The earliest work indicated that rainband formation was caused chiefly by the interactions between sea/land breeze, mountain/valley breeze and the trade winds. The more recent research, however, indicates that under strong trade wind conditions, the island scale flow may be more complex and involves the dynamical interactions between the strong trades and orography. As part of a larger experiment, the Principal Investigators propose to collect data to test this new hypothesis. In addition to furthering our understanding of the physics of these rainbands, the simplicity of the physics associated with this process should allow an unique opportunity to verify and test a mesoscale numerical model which will have value beyond this experiment.

由于雨带形成的一致性， 夏威夷是研究 大尺度水流与山区地形的相互作用。 一个 1985年夏天进行的实验和随后的数值计算 模拟研究得出了一个新的理论， 大岛东海岸的雨带机制 最早的研究表明，雨带的形成主要是由于 通过海陆风、山谷风、 还有信风 然而，最近的研究表明， 在强烈的信风条件下，岛屿规模的流动可能是 更复杂，涉及到动态之间的相互作用， 强大的贸易和地形。 作为更大实验的一部分，主要研究人员建议 收集数据来检验这个新假设 除了进一步 我们对这些雨带物理学的理解， 与此过程相关的物理学应该允许一个独特的 有机会验证和测试中尺度数值模型， 比这个实验更有价值