13. Introduction to Flux Measurement
The chapter discusses the principles of mass and energy transfer in the atmosphere, particularly focusing on the influence of moisture content and temperature gradients on flux measurements. It covers methods for calculating flux using gradient techniques and introduces important concepts such as turbulence and convective mass transfer. Additionally, it highlights the challenges and methodologies employed in measuring atmospheric parameters over various surfaces.
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Sections
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What we have learnt
- Moisture content and temperature significantly affect flux in environmental systems.
- Gradient techniques are essential for accurately measuring atmospheric flux when traditional enclosure methods are not feasible.
- Turbulence and convective mass transfer dynamics play critical roles in the behavior of substances in the atmosphere.
Key Concepts
- -- Abstraction
- A method of simplifying complex systems in order to study them or derive formulas.
- -- Flux Measurement
- The process of quantifying the amount of a substance that passes through a surface in a given time period.
- -- Gradient Technique
- A method used to estimate flux by measuring the concentration gradient of a substance in the atmosphere.
- -- Turbulence
- The irregular or chaotic movement of fluid particles that impacts the transfer characteristics of gases and vapors.
- -- Convective Mass Transfer
- The transfer of mass caused by the movement of the fluid itself, often influenced by factors like temperature gradients and turbulence.
- -- MoninObukhov Length Scale
- A length scale that quantifies the influence of buoyancy on turbulence in the atmosphere.
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