Heat waves: a hot topic in climate change research.

Area of Science:

• Climate Change Research
• Environmental Science
• Public Health

Background:

• Heat waves are an emerging societal concern within climate change research.
• Scientific literature on heat waves is rapidly expanding, with no prior comprehensive overview.
• Understanding heat wave impacts is crucial for public health and adaptation planning.

Purpose of the Study:

• To systematically analyze the burgeoning scientific literature on heat waves.
• To identify key heat wave events, affected regions, and documented impacts.
• To assess the trajectory of heat wave research and its connection to climate change.

Main Methods:

• Developed a specific search query for the Web of Science (WoS) database.
• Analyzed 8,011 retrieved papers for thematic content and time evolution.
• Identified citation classics to trace the historical development of heat wave research.

Main Results:

• Heat wave research has doubled in approximately 5 years, indicating a dynamic field.
• Severe events in 1995 and 2003 affected the USA, Europe, and Australia.
• Ecological impacts include drought and urban heat islands; health impacts include excess hospital admissions and mortality.
• Wet-bulb temperature projections indicate potential survivability limits by 2100.

Conclusions:

• Heat wave research is a rapidly advancing field critical to understanding climate change impacts.
• Urgent risk assessment and adaptation strategies are needed to address the growing threat of extreme heat.
• Future research highlights a critical link between rising temperatures, humidity, and human survivability.