Question

Arrange the following methods of evapotranspiration estimation according to their development in ascending order:
A. Blaney and Criddle
B. Radiation
C. Penman-Monteith
D. FAO Modified Penman
E. Penman
Choose the correct answer from the options given below:

• A. E, A, B, C, D
• B. A, B, E, D, C
• C. C, D, E, B, A
• D. D, B, A, E, C

Hint:

ET estimation methods (chronological):
1. Penman (1948)
2. Blaney and Criddle (1950)
3. Radiation (1960s)
4. FAO Modified Penman (1977)
5. Penman-Monteith (1990s) - FAO-56

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Evapotranspiration (ET) estimation methods have been developed progressively from empirical approaches to more physically based models. The chronological sequence is determined by their year of development.

Step 2: Chronological Arrangement:
The methods are arranged in ascending order as follows:
• A -- Blaney and Criddle Method
• B -- Radiation Method
• E -- Penman Method
• D -- FAO Modified Penman Method
• C -- Penman--Monteith Method Therefore, the required sequence is \[ A \;\rightarrow\; B \;\rightarrow\; E \;\rightarrow\; D \;\rightarrow\; C \]

Step 3: Final Answer:
A,\;B,\;E,\;D,\;C} Hence, the correct option is (B).
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