Abstract
Compound drought and heat event (CDHE) causes severe impacts on agriculture, ecosystem, and human health. Based on daily maximum surface air temperature and meteorological drought composite index data in China, changing features of CDHEs in warm season from 1961 to 2018 is explored at a daily time scale based on a strict and objective definition in this study. Results reveal that CDHEs have occurred more frequently and widely in China, especially since the late 1990s. Notably, such changes are more obvious in Southwest China, eastern Northwest China, northern North China, and the coastal area of southeastern China. A prominent feature is that persistent CDHEs on a daily scale have increased significantly. To better understand climate change of compound extreme events, further studies on the physical mechanism, especially attribution analyses at a regional scale, are urgently needed.
Highlights
Compound drought and heat event (CDHE) causes severe impacts on agriculture, ecosystem, and human health
Studies are emerging in compound drought and heat events (CDHEs)
Considering that changes in drought and heat events bring about a disastrous impacts on agriculture, ecosystem, and human health, spatial–temporal changes in daily CDHEs during warm season of 1961–2018 in China are investigated
Summary
Compound drought and heat event (CDHE) causes severe impacts on agriculture, ecosystem, and human health. Concurrent drought and heat events seen in 2018 Europe and 2019 Australia have attracted the attention of science c ommunity[12] Such types of compound extreme events induce aggravated impacts on agriculture, ecosystem, water security, and human h ealth[13,14,15,16]. The detection and attribution of CDHEs, and feedback between extreme drought and heat events, are very important topics, which require a better index to understand the changing features[17,28,29]. Considering that changes in drought and heat events bring about a disastrous impacts on agriculture, ecosystem, and human health, spatial–temporal changes in daily CDHEs during warm season (from May to October) of 1961–2018 in China are investigated. Based on the most updated datasets and the newly defined CDHE index, these changes in the above mentioned properties of CDHEs in China are studied and reflected in this investigation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
