“热穹顶”效应下， 新一轮热浪“烤”验北半球多国

Group 1 - The article highlights the extreme heat wave affecting multiple countries in the Northern Hemisphere since June, with record-breaking temperatures prompting health warnings [1][2][4][6][12] - France has issued a red heat warning for Paris and 15 other provinces, with temperatures exceeding 40 degrees Celsius in some areas [2][4] - Spain is experiencing its strongest heat wave in 50 years, with temperatures in some regions surpassing 40 degrees Celsius, including a record of 46 degrees Celsius in Andalusia [6][8] - Portugal has also reported extreme temperatures, with a small town reaching 46.6 degrees Celsius, leading to high fire risks across 80 cities [8][9] - Germany is facing a severe heat wave, with temperatures expected to exceed 35 degrees Celsius and potentially reach 41 degrees Celsius in some areas [9] - The UK has recorded its hottest June since 1884, with average temperatures reaching the second highest on record, prompting health advisories [12][14] - Belgium's Atomium has been closed due to extreme heat, marking the first closure in six years due to high temperatures [18] Group 2 - The phenomenon causing these extreme temperatures is referred to as the "heat dome," which traps hot air in a specific area while preventing cooler air from entering [19][21] - Experts note that while the "heat dome" is a natural occurrence, climate change is increasing the likelihood and severity of such heat waves, impacting human health, food and water security, and ecosystems [23]