The matter in summary Tuesday 4 July was the hottest day ever recorded in the world. The average temperature for the whole world was 17.18 degrees on Tuesday. The previous record was 17.01 degrees and was set the day before. Extreme heat in several places in the world, including China, the USA, India, Spain and North Africa. El Niño and climate change are the main causes of the extreme heat wave. Over 100 people have died from heatstroke in Mexico in the past month. The summary is made by an AI service from OpenAi. The content has been reviewed by news’s journalists before publication. The average temperature for the whole world was 17.18 degrees on Tuesday. This is shown by figures from Climate Reanalyzer. The previous record was 17.01 degrees and was set the day before, Monday 3 July. Previously, the global temperature had never been above 17 degrees. The warmest previously measured was 16.92 degrees in August 2016. Historically, this temperature record has increased by 0.01 to 0.04 degrees. Now the record has been moved by an incredible 0.26 degrees in two days. – It is a big leap which unfortunately is not surprising, says climate researcher at the Meteorological Institute, Hans Olav Hygen. He is joined by Karoline Andaur, secretary general of the World Wildlife Fund WWF. – This is very serious. We don’t know where the limit is when climate change becomes catastrophic, but we know that both people and nature are already being hit very hard, says Andaur. Map showing the temperatures around the world on Tuesday 4 July Photo: Climate Reanalyser Temperatures in winter in Antarctica The new heat record comes because it is extremely hot in several places in the world. At the Ukrainian research station Vernadskij on the Antarctic Peninsula, there have been plus temperatures in the middle of winter. The station just set a heat record for July with 8.7 plus degrees, writes Reuters. This is happening despite the fact that it is the middle of winter in Antarctica and there are only a few minutes of daylight on Vernadskij. – It is almost more sensational than setting a global record, that it is so warm there in winter, says Hans Olav Hygen. Vernadskij research station on the Antarctic Peninsula has had plus temperatures in the middle of winter. Photo: Creative Commons USA, India and China The record high temperature for the whole world comes after a number of countries and areas have experienced extreme heat recently. China experienced a heat wave in June with temperature records in Beijing exceeding 40 degrees, writes Reuters. Large parts of the southern United States are in a heat wave. It is hottest in Arizona, Texas, Florida, Louisiana, Mississippi and Alabama, writes the New York Times. Southern Spain has had a heat wave and has another one underway. According to Yr, it is expected that it will be 45 degrees in Seville next Wednesday. North Africa has had temperatures of up to 50 degrees. In Fes in Morocco, 48 degrees are expected next week, reports Yr. India, Iran and Vietnam are other countries with extreme heat waves, writes Reuters. Raining with new records – It is yet another warning in the series about where we are going, says climate researcher at the Meteorological Institute, Hans Olav Hygen. Photo: Magne Velle The average temperature for the whole world varies between 12 and 17 degrees throughout the year. From 1979 to 2000 it was around 16.2 degrees, but since then new records have been constantly set. Normally, the temperature continues to rise steadily until the end of July or the beginning of August, writes AFP. – I would expect this record to be broken before too long, says climate researcher Hygen. The black line is for 2023 and shows how the temperature in July is far above previous levels. The orange line is for 2022 and the top dashed line is the 1979–2000 average. Photo: Climate Reanalyze El Niño and climate change The heat record is mainly due to two things, writes Bloomberg. Man-made climate change is making the world increasingly warmer. At the same time, the El Niño weather phenomenon has occurred in the Pacific Ocean. This leads to a warmer sea surface and raises the temperature in large areas. The result is that 4 July is the hottest day ever recorded. – Death penalty for people – This is not a milestone we should celebrate. This is a death sentence for people and ecosystems, says climate scientist Friederike Otto to Bloomberg. The word capital punishment is real enough. Over 100 people have died from heatstroke in Mexico in the past month, writes Reuters. In Texas, at least 13 are dead, writes NBC Dallas. India is the country that is probably the hardest hit. There is no good overview of how many lives the heat has taken. In one state alone, at least 68 people died during four days in June, writes CNN. Karoline Andaur in the WWF says that it is clear what the world must do. – What is needed is that we cut greenhouse gas emissions and then the political will must be in place. It is not today, she says. 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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Temperatures in the winter in Antarctica – on Tuesday the all-time heat record was broken – news Urix – Foreign news and documentaries
