相关实验视频
Updated: Jul 12, 2026

09:05
Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
Published on: June 24, 2019
概括
精确测量地球表面的微量物种和能量交换对于了解气候和生态影响至关重要. 本综述涵盖了获得可靠的表面流量数据的方法和挑战.
科学领域:
- 大气科学 大气科学
- 环境科学环境科学
- 地质物理学 地质物理学
背景情况:
- 微量物种和能源的地表-大气交换显著影响气候,生态和人类福祉.
- 了解这些交流对于评估环境变化和改进大气过程模型至关重要.
- 获得精确的表面交换测量具有相当大的挑战.
研究的目的:
- 审查大气边界层与干燥表面交换相关的物理和流结构.
- 描述各种测量或估计表面流量的技术.
- 突出影响流量数据代表性的挑战.
主要方法:
- 对大气边界层物理和流的综述.
- 用于流量测量的微气象,预算和封闭技术的描述.
- 分析测量问题,包括现场特征,采样,传感器和流量扭曲.
主要成果:
- 大气边界层的物理和流控制了干燥表面的汇率 (流动).
- 不同的测量技术 (微气象,预算,封闭) 具有明显的优势和局限性.
- 几个因素,包括网站的特点和传感器属性,可以影响数据的代表性.
结论:
- 准确的表面流量数据是必不可少的,但很难获得.
- 对于可靠的流量估计,需要对测量技术和潜在问题有充分的了解.
- 解决测量挑战是提高我们对地球表面过程及其影响的理解的关键.
相关概念视频
Temperature Measurement Sites
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Boundary Layer Characteristics
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...

