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22. Potential Evapotranspiration over India
Evapotranspiration plays a vital role in India's hydrologic cycle, affecting water resources, agriculture, and climate assessments. Understanding Potential Evapotranspiration (PET) is essential for effective irrigation planning and management, particularly in a country with diverse climatic regions. Methods of estimating PET, the factors influencing it, and the challenges faced in accurate measurement are pivotal for sustainable water resource management.
Sections
This section outlines the concept, importance, factors, methods, and challenges of estimating Potential Evapotranspiration (PET) in India.
Evapotranspiration is the sum of evaporation and transpiration from the Earth's surface.
Potential Evapotranspiration (PET) is crucial for understanding water needs in agriculture and managing water resources.
Various empirical and physically-based methods exist for estimating PET, each with its strengths and limitations.
Evapotranspiration (ET)
The combined loss of water from the surface through evaporation and transpiration from plants.
Potential Evapotranspiration (PET)
The amount of water that would evaporate under optimal conditions with a sufficient water supply.
Penman-Monteith Method
A comprehensive method for estimating PET that accounts for multiple climatic factors.
MODIS
A satellite data source used for large area estimation of PET.
Practice Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
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