Sarath Chandran M A, Subba Rao A V M, Sandeep V M, Pramod V P, Pani P, Rao V U M, Visha Kumari V, Srinivasa Rao Ch
ICAR-Central Research Institute for Dryland Agriculture (CRIDA), Santoshnagar, Hyderabad, 500059, India.
Int J Biometeorol. 2017 Jun;61(6):1063-1072. doi: 10.1007/s00484-016-1286-9. Epub 2016 Dec 8.
Heat wave is a hazardous weather-related extreme event that affects living beings. The 2015 summer heat wave affected many regions in India and caused the death of 2248 people across the country. An attempt has been made to quantify the intensity and duration of heat wave that resulted in high mortality across the country. Half hourly Physiologically Equivalent Temperature (PET), based on a complete heat budget of human body, was estimated using automatic weather station (AWS) data of four locations in Andhra Pradesh state, where the maximum number of deaths was reported. The heat wave characterization using PET revealed that extreme heat load conditions (PET >41) existed in all the four locations throughout May during 2012-2015, with varying intensity. The intensity and duration of heat waves characterized by "area under the curve" method showed good results for Srikakulam and Undi locations. Variations in PET during each half an hour were estimated. Such studies will help in fixing thresholds for defining heat waves, designing early warning systems, etc.
热浪是一种与天气相关的危险极端事件，会影响生物。2015年夏季热浪影响了印度许多地区，导致全国2248人死亡。人们试图量化导致全国高死亡率的热浪强度和持续时间。基于人体完整热收支的半小时生理等效温度（PET），利用安得拉邦四个报告死亡人数最多地点的自动气象站（AWS）数据进行了估算。使用PET进行的热浪特征分析表明，在2012 - 2015年期间的整个五月，所有四个地点都存在极端热负荷条件（PET >41），强度各不相同。以“曲线下面积”法表征的热浪强度和持续时间在斯里卡库拉姆和温迪地点显示出良好结果。估算了每半小时PET的变化。此类研究将有助于确定定义热浪的阈值、设计早期预警系统等。
