The extreme summer continues. July was the hottest month on record. And the extreme results continue in August, WMO writes on Friday. – This is the new normal and it comes as no surprise, says Alvaro Silva, a climate scientist at the WMO. At a meeting in Geneva on Friday, Silva said that both the frequency and intensity of many types of extreme weather, such as heat waves and heavy rainfall, have increased in recent decades. – There is a high degree of certainty that man-made climate change from emissions of greenhouse gases is the most important cause, he said. People cool off in a fountain in Piazza del Popolo in Rome on Thursday. The temperature is also on the rise in the Italian capital and is expected to reach 38 degrees on Monday. Photo: AP Over 50 degrees August has already seen several national heat records. On 11 August, Morocco exceeded 50 degrees for the first time. Then 50.4 degrees were measured in Agadir, in the south-west of the country. On 15 August, 49.5 degrees were measured in Turkey. It was also a new record. The previous record of 49.1 degrees was from July 2021. Many places in the Middle East have also had temperatures above 50 degrees in recent weeks. Large parts of Europe now have danger warnings due to heat, shows the map from Eumetnet, an association of 31 European national weather forecasters. Red is the most serious, then follow the orange and yellow danger warning. Photo: Eumetnet Danger warnings across Europe This weekend, temperatures are again expected to climb far up the scale. Danger warnings have been sent out from Lithuania in the north to Cyprus in the south, from Spain in the west to Greece in the east. France is expecting temperatures of up to 40 degrees in what Meteofrance describes as the strongest heatwave of the year. Already on Friday afternoon, 39.1 degrees were measured in Apt in south-east France. And it will get warmer. Maps from the Spanish weather forecasting service AEMET show danger warnings due to the heat wave over most of the country on Sunday. Orange is more serious than yellow warning. Photo: AEMET The fourth heat wave of the summer In Spain is the fourth heat wave of the summer, writes El Pais. Temperatures above 40 degrees are again expected on Sunday. It happens just a week after the previous heat wave was over, It led to a series of heat records in Spain. Among other things, a minimum temperature of 35 degrees was measured at 00:20 on Wednesday 9 August in Badajoz, in the west of the country. The Spanish meteorologist Rubèn del Campo described it as follows on X/Twitter: Tropical nights: Not below 20 degrees. Hot nights: Not below 25 degrees. Nights in hell: Not below 30 degrees. What should we then call nights that are not below 35 degrees? This time it is expected to be warmest along the Guadalquivir valley in the south of Spain. In Seville, according to Yr, it is expected to be 43 degrees on Sunday, while Cordoba is expected to be just as hot on Monday. People in Madrid brought out the umbrellas to protect themselves from the sun during the heat wave earlier in August. Now the umbrellas have to come forward again. Photo: AFP Hot at 5,300 meters In Switzerland, both red and orange danger warnings have been sent out. Temperatures are expected to approach 35 degrees Over the next few days, it is expected that an unusual weather record will be set in the alpine country, writes La Vanguardia. As you know, it gets colder and colder the higher you go. When you get up to four kilometers, the temperature is almost always below zero degrees. Only twice in history have people in Svetis had to climb more than 5,000 meters into the atmosphere before reaching below freezing. At the weekend, it is expected that you will have to go up to 5,300 meters to get below zero. In that case, it will not be possible to measure it on the ground; Switzerland’s highest mountain is the Dufourspitze at 4,634 metres. A warning about health-threatening extreme heat has been sent out for large parts of Texas. 7-year-old Braxton Hicks in Livingston has put her head down on a fan to cool down. Photo: AP Hottest of all time Heat waves have also been announced elsewhere in the world. The American city of Phoenix experienced 31 degrees with temperatures above 43 degrees, writes the New York Times. On July 30, the temperature finally crept below 43 degrees, albeit not by much. But for the week, 43-44 degrees have been forecast again. In the states of Texas and Florida, the highest danger warnings have been issued due to the heat. The New York Times heat map shows large areas where the temperature is far above normal for the season. So far, July 2023 is the warmest month on record. In a few weeks it will be clear whether August has been even warmer. Temperature in the world since 1880 compared to the average in the period 1991-2020 +0.5°C compared to normal? Click for explanation normal temperature 18801900192019401960198020002020Go to news’s Climate Status Why are most years blue and colder than normal? This is because all years are now compared with a new normal, i.e. the average weather in the 30-year period 1991-2020. These 30 years have been unusually warm. Most other years are therefore colder than normal. Until recently, researchers used a normal period that ran from 1961-1990. In these years it was relatively cold. It’s been quite a while since the 1960s and the new normal allows us to compare the weather with the climate (normal) that people actually experience today. The normal period is determined by the World Meteorological Organization (WMO), and is used in all countries . In this way, we can compare the weather in Norway with other countries and we can measure changes across the globe. How can you calculate one temperature for the whole world? This number is the result of a complicated calculation. Measurements are made with thermometers both on land and on the sea surface (at sea the thermometers are attached to buoys). In some places the thermometers are close together, in other places they are far apart. Using a statistical method, the researchers are able to give the measurements different weights, so that all areas are equally important: The data used in this graph comes from the American NOAA. They have divided the globe into squares of 5° x 5° and calculate one temperature for each square. Then they can again work their way up to a global figure, for each month or for each year. They can also make figures for the temperature only over the ocean or only over land, or for the northern and southern hemispheres. The lines at the poles are smaller than along the equator due to the curvature of the globe. The researchers also take this into account in their calculations. Others, such as NASA or the Hadley Centre, calculate in slightly different ways than NOAA. Therefore, there are often small differences between the various data sets. In any case, the trend they show is the same: since 1880, the world has become warmer.
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Extreme weather is the new normal – news Urix – Foreign news and documentaries
