Delhi is reeling from the most extreme heat wave India has ever seen. While the record-breaking maximum recorded temperature of 52.9°C has been called into question by India’s Meteorological Department, it’s entirely possible. The city has been sweltering, with top temperatures ranging from 45.2°C to 49.1°C, at the limit of human endurance.
Delhi is reeling from the most extreme heat wave India has ever seen. While the record-breaking maximum recorded temperature of 52.9°C has been called into question by India’s Meteorological Department, it’s entirely possible. The city has been sweltering, with top temperatures ranging from 45.2°C to 49.1°C, at the limit of human endurance.
This event follows hot on the heels of extreme heat waves across Asia as well as the Sahel in Africa.
Climate scientists have long warned these days would come. The recent acceleration in warming means it’s happening sooner than we expected. So we need to work harder and faster to reduce greenhouse emissions and get global heating under control.
Fortunately, India’s current heat wave conditions are expected to ease over the coming days. But the death toll is likely to rise, as people succumb to multiple health effects. Extreme heat has a long tail of destruction. Almost every chronic health condition is made worse by exposure to such temperatures.
Australians should take note. We are not safe, and we need to prepare for heat to hit us just as hard. It could even be worse here, because people with air conditioning can be lulled into a false sense of security. There’s no guarantee these air con units will extract enough heat to effectively cool our living and working areas, and electricity networks can fail.
When you’re hot, your body tries to cool off by sweating. This involves sending blood to the surface. Blood vessels at the skin dilate and the skin looks flushed, but this causes your blood pressure to fall. The heart has to work harder.
We need to keep our core temperature around 36–37°C.
