The correct option is C Both of these
A Heat Wave is a period of abnormally high temperatures, more than the normal maximum temperature that occurs during the summer season in the North-Western parts of India. Heat Waves typically occur between March and June, and in some rare cases even extend till July. The extreme temperatures and resultant atmospheric conditions adversely affect people living in these regions as they cause physiological stress, sometimes resulting in death. The Indian Meteorological Department (IMD) has given the following criteria for Heat Waves : Heat Wave need not be considered till maximum temperature of a station reaches atleast 400C for Plains and atleast 300C for Hilly regions When normal maximum temperature of a station is less than or equal to 400C Heat Wave Departure from normal is 50C to 60C Severe Heat Wave Departure from normal is 70C or more When normal maximum temperature of a station is more than 400C Heat Wave Departure from normal is 40C to 50C Severe Heat Wave Departure from normal is 60C or more When actual maximum temperature remains 450C or more irrespective of normal maximum temperature, heat waves should be declared. Higher daily peak temperatures and longer, more intense heat waves are becomingly increasingly frequent globally due to climate change. India too is feeling the impact of climate change in terms of increased instances of heat waves which are more intense in nature with each passing year, and have a devastating impact on human health thereby increasing the number of heat wave casualties. Higher daily peak temperatures and longer, more intense heat waves are becomingly increasingly frequent globally due to climate change. India too is feeling the impact of climate change in terms of increased instances of heat waves which are more intense in nature with each passing year, and have a devastating impact on human health thereby increasing the number of heat wave casualties. Health Impacts of Heat Waves The health impacts of Heat Waves typically involve dehydration, heat cramps, heat exhaustion and/or heat stroke. The signs and symptoms are as follows: Heat Cramps: Ederna (swelling) and Syncope (Fainting) generally accompanied by fever below 390C i.e.1020F. Heat Exhaustion: Fatigue, weakness, dizziness, headache, nausea, vomiting, muscle cramps and sweating. Heat Stoke: Body temperatures of 400C i.e. 1040F or more along with delirium, seizures or coma. This is a potential fatal condition