17. Evaporimeters and Analytical Methods of Evaporation Estimation
Evaporation, crucial in the hydrological cycle, involves water transitioning from liquid to vapor, necessitating accurate estimation methods in engineering. The chapter explores various evaporimeters, analytical methods such as energy budget and mass transfer, and factors affecting evaporation rates. Proper understanding and selection of evaporation estimation is vital for effective water resource management.
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What we have learnt
- Evaporation is defined as the transition of water from liquid to vapor, essential for water resource management.
- Various factors affect evaporation rates, including solar radiation, temperature, humidity, and wind speed.
- Several methods exist for estimating evaporation, including empirical and analytical methods, each with specific applications and limitations.
Key Concepts
- -- Evaporation
- The process by which water changes from liquid to vapor due to various environmental factors.
- -- Evaporimeters
- Instruments designed to measure evaporation rates directly from water bodies.
- -- Energy Budget Method
- An analytical technique estimating evaporation based on the energy balance of incoming and outgoing thermal energies.
- -- Mass Transfer Method
- A method that calculates evaporation based on vapor pressure differences and wind speed.
- -- Combination Method
- A method that incorporates both energy budget and mass transfer principles for enhanced accuracy in evaporation estimation.
- -- Remote Sensing
- Technological approaches using satellite imagery to assess evaporation on a regional scale.
- -- Lysimeter Technique
- A method for measuring evapotranspiration using soil tanks with vegetation to record water loss.
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