My today's column
A heat wave is ravaging countries around the world. Although many celebrate sunny days, wildfires, wasted crops and health problems are some of the many disastrous consequences hot weather can have. Are we facing now the global heat wave that's been killing us?
This write-up seems to become the continuation of my previous column from last week in this publication. But it looks like much more dangerous:
Portugal breaks temperature records as European heat wave sizzles on! That's how one of hundreds headlines goes while browsing the latest news. Eight locations in Portugal have hit their highest-ever temperatures amid a heat wave across Europe. Two people are reported to have died in neighboring Spain of heat-related causes.
Portugal's weather agency said Friday that eight places in the center, south and east of the country experienced record-breaking local temperatures the previous day, as the Iberian peninsula bears the brunt of a heat wave across the European continent.
Two people in neighboring Spain are reported to have died amid the heat, with climate scientists saying such periods of scorching temperatures in Europe have been made twice as likely by the effects of global warming caused by human activity. The temperature reached 45.2 Celsius (113 Fahrenheit) (!) near Abrantes, a town 159 km (99 miles) northeast of Lisbon.
Many other European countries are also suffering unusually extended periods of very hot weather. The current heat wave in the Netherlands is the longest-ever recorded, while Sweden has experienced its hottest July in more than 250 years, accompanied by wildfires across the country.
Germany - my home country - has also been hit by hot weather, with fires breaking out in the national park of Saxon Switzerland in the eastern state of Saxony on last Thursday evening. The drought is so bad in northern Germany that a kindergarten burned down in the far north after firefighters couldn't get enough water. No one has been killed or injured.
Most of us enjoy sunny days and complain on rainy ones — yet behind the clear skies lies a less pleasant reality. Since June 2018, numerous regions around the world have been facing infernal temperatures, which have caused wildfires, ruined crops and killed hundreds of people.
The hottest year ever recorded was 2016, due to a combination of global warming and a strong El Niño episode. Despite 2018 experiencing the opposite climate event, La Niña — which tends to cool temperatures — June has ranked as one of the hottest months on record.
A heat wave describes a period of at least five days with a temperature of 5 degrees Celsius (9 degrees Fahrenheit) above the average. Extremely hot individual days can be a one-off, which doesn't always have a link to heat waves or global warming. However, a trend is clear: As a result of climate change, we can expect more extreme and frequent heat waves. That's the opinion of Clare Nullis, media officer World Meteorological Organization.
For a south European person, 30 degrees Celsius (86 degrees Fahrenheit) is nothing special. But that definitely is hot for people in the United Kingdom and Ireland, where the normal temperature in June doesn't exceed 20 degrees. On June 28, Glasgow reached its hottest June day ever, with 31.9 degrees Celsius, and the Irish town of Shannon its highest temperature ever recorded at 32 degrees.
Germans have enjoyed — or suffered — temperatures above 30 degrees Celsius for most of May and June. In the country of Georgia, July 4 made history with 40.5 degrees Celsius.
North America has not escaped the suffocating wave either. Denver and Los Angeles were among several cities in the United States that tied or broke heat records.
Montreal, in Canada, recorded the highest temperature in 147 years of record-keeping on July 2. The heat wave there killed more than 70 people.
Thermometers in Japan, Russia and Algeria, among other places, were also on fire. On July 5, the Ouargla weather station in Algeria’s Sahara Desert reported the highest reliable temperature ever recorded in Africa: 51.3 degrees Celsius.
This increases the risk of cardiovascular and respiratory diseases. Substances like pollen, which can cause asthma, are also higher in extreme heat, the WHO said. Unusually high temperatures at night disturb restful sleep, preventing the body from recovering from daytime heat.
Vulnerable groups such as young children and the elderly suffer the most, stated Simone Sandholz, associate academic officer at the United Nations University's Institute for Environment and Human Security. Most victims of extreme heat live in densely populated urban areas, where ventilation is scarce, she added.
Hot weather coupled with humidity is also a perfect setting for insects to thrive. In England, helpline calls for insect bites almost doubled in early July. And if you've ever felt it was so hot your brain doesn't work, science says you could be right. Hot weather can make your thinking more than 10 percent slower, a new study shows.
Farmers and crops are further victims of heat waves and droughts. In the UK, growers of peas and lettuce have struggled to meet demand due to low yields and crop failure this growing season; wheat, broccoli and cauliflower are also on the list of crops affected by the weather. In Germany, farmers have resigned themselves to a much lower grain harvest due to the heat and dryness.
While writing this piece, I am sitting in my cool office. But every specialist will tell you: access to air conditioning and cooling systems, though vital in a warmer world, can be part of a vicious cycle. Increasing use of cooling devices, currently powered largely by fossil fuels, would further contribute to climate change — and therefore rising temperatures.
