The Paris Olympics kicked off amid a scorching heat wave, with temperatures soaring to record highs in France and other parts of the Mediterranean region. Climate change was identified as the main culprit behind these extreme temperatures, with researchers pointing out that the atmosphere’s high emissions from burning fossil fuels contributed to the unbearable heat.
While athletes at the Olympics struggled in the sweltering conditions, other regions around the world also experienced unprecedented heat waves. Death Valley in California recorded its hottest month ever, and a major heat dome settled over the southern United States. The National Weather Service issued extreme heat advisories for over 150 million people as temperatures continued to rise.
One important factor to consider during extreme heat events is the heat index, also known as the apparent temperature. This index takes into account humidity levels along with temperature to reflect how hot our bodies actually feel. In high humidity, sweat evaporation slows down, making it harder for the body to cool down effectively.
For outdoor activities, the wet bulb globe temperature (WBGT) may be a more accurate indicator of heat stress. This measurement considers temperature, humidity, wind speed, and sunlight exposure to determine the apparent temperature in direct sunlight. While calculating the WBGT is more complex than the heat index, it provides a more comprehensive assessment of heat stress on the body.
As heat waves become more frequent and intense due to climate change, understanding these temperature indices is crucial for staying safe and avoiding heat-related illnesses. By monitoring the heat index and WBGT, individuals can take appropriate measures to prevent heat stroke and exhaustion during extreme heat events.
If you have questions about Earth’s extreme heat and changing climate, feel free to send them in for future Extreme Climate Update columns. Stay informed and stay safe in the face of rising temperatures and shifting climate patterns.