对于稳定和非常稳定的表面层中的Monin-Obukhov相似性函数的确定的功能形式
G Casasanta1, M Conte2, R Sozzi3
1Institute of Atmospheric Sciences and Climate (CNR- ISAC), National Research Council of Italy, Rome, Italy.
Scientific reports
|July 15, 2025
概括
这项研究通过将两个理论相结合,分析地推导出稳定的大气条件的Monin-Obukhov相似函数. 这为改进的天气和气候模型推进了基于物理的流参数化.
科学领域:
- 大气科学 大气科学
- 流体动力学 流体动力学
- 气象学 天气学
背景情况:
- 莫宁-奥布霍夫相似函数对于大气流模型至关重要,但它们的确切形式,特别是在稳定的条件下,仍在争论中.
- 当前的经验表述往往导致不一致性和物理不合理的结果.
研究的目的:
- 在稳定的条件下分析推导出Monin-Obukhov相似函数的函数形式.
- 建立莫宁-奥布霍夫相似性理论 (MOST) 和能源和流量预算 (EFB) 模型之间的理论联系.
- 识别和正式化普遍相似性函数之间的相互依赖关系.
主要方法:
- 将已建立的Monin-Obukhov相似性理论 (MOST) 与能源和流量预算 (EFB) 的第二阶段闭合模型相结合.
- 对稳定的大气表面层的相似性函数形式的分析推导.
- 普遍函数之间的约束关系的正式化.
主要成果:
- 在稳定的条件下,对所有Monin-Obukhov相似性函数的分析衍生函数形式.
- 识别和正式化一组约束关系,定义这些函数之间的物理相互依赖.
- 一个理论上更强大的框架来理解稳定的大气表面层.
结论:
- 该研究提供了一种更具物理基础的方法,用于大气模型中的流参数化.
- 衍生的函数和关系为提高数值天气预测,空气质量,海洋和气候模型的准确性提供了一条途径.
- 推进对稳定的大气表面层的理论理解,解决现有实证模型中的不一致性.
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