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Consider the following statements regarding Heat wave:
1. It is decided based on the temperature thresholds over a region in terms of actual temperature.
2. In India, the maximum temperature recorded at a station is 40 degrees Celsius or more in the plains is known as Heat wave.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements regarding Heat wave:1. It is decided...
Recently, India Meteorological Department (IMD) has predicted an increase in the maximum temperature and the frequency of heatwave conditions in the forthcoming days over eastern and southern India.
- The definition of a heatwave depends on the physiography of regions.
- Qualitatively, heat wave is a condition of air temperature which becomes fatal to human body when exposed.
- Quantitatively, it is defined based on the temperature thresholds over a region in terms of actual temperature or its departure from normal.
- The IMD will declare a heatwave
- If the maximum temperature recorded at a station is 40 degrees Celsius or more in the plains, 37 degrees Celsius or more in the coast, and 30 degrees Celsius or more in the hills.
- A heatwave’s severity is determined by its departure from normal temperature.
- There is a ‘normal heatwave’ when the departure is by 4.5-6.4 degrees Celsius and a ‘severe heatwave’ if the departure is greater.
- Heat wave declaration could also be based on actual maximum temperature:
- A ‘heatwave’ is when this figure is greater than 45 degrees Celsius and a ‘severe heatwave’ when greater than 47 degrees Celsius.
- The IMD takes these two ‘routes’ only when at least two stations in a meteorological subdivision report such a high maximum or when at least one station has recorded a corresponding departure from the normal for at least two consecutive days.
- Governments at various levels — State, district, and city — have prepared heat action plans (HAPs).
- HAPs aim to increase preparedness and lower the adverse impacts of extreme heat by outlining strategies and measures to prepare for, address, and recover from heatwaves.
- The National Disaster Management Authority and IMD are reported to be working with 23 States to develop HAPs.
- There is no centralised database on HAPs, but at least 23 HAPs exist at the State and city level, with a few States, such as Odisha and Maharashtra, laying out district-level HAPs.
Hence both statements are correct.
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Consider the following statements regarding Heat wave:1. It is decided...
Explanation:
Heat waves are extreme weather events characterized by prolonged periods of excessively hot weather. In India, the criteria for defining a heat wave are as follows:
1. Temperature Thresholds:
- Heat waves are decided based on the temperature thresholds over a region in terms of actual temperature. These thresholds vary from region to region and are determined based on the climatic conditions of the area.
2. Maximum Temperature:
- In India, a heat wave is officially declared when the maximum temperature recorded at a station is 40 degrees Celsius or more in the plains. This temperature threshold helps in identifying when conditions are extreme enough to be classified as a heat wave.
Therefore, both statements are correct as they highlight the key factors involved in determining and defining a heat wave in India.
Heat waves are extreme weather events characterized by prolonged periods of excessively hot weather. In India, the criteria for defining a heat wave are as follows:
1. Temperature Thresholds:
- Heat waves are decided based on the temperature thresholds over a region in terms of actual temperature. These thresholds vary from region to region and are determined based on the climatic conditions of the area.
2. Maximum Temperature:
- In India, a heat wave is officially declared when the maximum temperature recorded at a station is 40 degrees Celsius or more in the plains. This temperature threshold helps in identifying when conditions are extreme enough to be classified as a heat wave.
Therefore, both statements are correct as they highlight the key factors involved in determining and defining a heat wave in India.
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Consider the following statements regarding Heat wave:1. It is decided based on the temperature thresholds over a region in terms of actual temperature.2. In India, the maximum temperature recorded at a station is 40 degrees Celsius or more in the plains is known as Heat wave.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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