definition of droughts
Answers
Answer:
- a prolonged period of abnormally low rainfall, leading to a shortage of water.
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⏭️The definition of drought varies from place to place. For example, only six days without rain is a drought in Bali. Since drought differs so much from place to place, there is no absolute figure that defines a drought. Instead, scientists measure it as a deviation from average rainfall. They use the previous 30 years of rainfall to create the average.
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❇️Scientists measure drought with the Palmer Drought Severity Index. Normal climate conditions vary between +0.5 (wet) to -0.5 (dry). Readings below -0.4 indicate drought. Readings below -0.6 are rare.
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