19.5. Methods of Estimating Evapotranspiration

Try these first

1. 1.

   What does the Blaney-Criddle method use to estimate ET?

   Hint

   Think about the two primary inputs of this method.

2. 2.

   Is the Hargreaves method complex?

   Hint

   Focus on temperature as the main factor.

3. 3.

   Which of the following is an empirical method for estimating ET?

   • Penman-Monteith
   • Blaney-Criddle
   • Energy Balance

   Hint

   Consider which method uses regression and observational data.

4. 4.

   True or False: The Penman-Monteith Method is only applicable in arid regions.

   • True
   • False

   Hint

   Think about its usage across various climates.

5. 5.

   Using climatological data, estimate the weekly ET for a crop given a max temperature of 28°C, a min of 12°C, and 60% daylight hours.

   Hint

   Make sure to calculate the daily mean temperature first!

6. 6.

   Describe an ideal scenario for using the Energy Balance Method and provide the rationale.

   Hint

   Think about where energy balance data would be most reliable.