Group 1 - The article discusses the extreme heat wave affecting multiple countries in the Northern Hemisphere, with temperatures exceeding 43°C in Spain and Portugal, and over 40°C in parts of West Asia and North Africa [2][6][10] - In China, the average temperature reached 21.1°C by June 25, 2025, marking the highest level since 1961, with predictions indicating temperatures in North China could exceed 42°C for over 30 days [6][10] - The World Meteorological Organization links these high-temperature events to the "heat dome" phenomenon, which is characterized by a persistent high-pressure system trapping heat in a specific area [10][11] Group 2 - The "heat dome" acts like a stubborn "goalkeeper," preventing cold air from entering, which leads to rising temperatures and extreme heat conditions [3][11] - The formation of the "heat dome" is influenced by three main factors: the inability of warm air to rise, descending air currents that enhance solar radiation, and prolonged dry weather that decreases soil moisture, creating a feedback loop that exacerbates heat [13][29] - The phenomenon is a natural occurrence, but its frequency and intensity are increasing due to global warming, posing significant challenges for humanity [13][26][29] Group 3 - The article highlights the critical threshold of wet bulb temperature at 35°C, which is considered the maximum temperature and humidity combination that the human body can withstand [14][19] - When wet bulb temperature reaches 35°C, it indicates that sweat cannot evaporate effectively, leading to a risk of heat-related illnesses and potentially death [16][19] - Research indicates that for every 1°C increase in temperature, the risk of death related to cardiovascular diseases increases by 2.1% [19][26]

"至于每个人感受到的温度，即体感温度，不确定性更大。"朱定真说，体感温度是每个人和外界空气接 触后感觉到的温度，受影响因素较多，比如气压、风力、湿度等。 入夏以来，我国各地高温天气不断出现。南方高温持续，华北地区遭遇长时间湿热天气。中央气象台预 计，未来一周，河北中南部、黄淮、江汉、江淮、江南北部、陕西关中、四川盆地等地将出现持续35摄 氏度以上高温天气，部分地区最高气温可达39至42摄氏度。 天气又闷又热，总有公众感觉"怎么比预报温度要热"，这是什么原因？ "气象的观测环境和个人在室外的环境是不一样的，因此人们常常感觉预报的气温跟体感不一样。"中国 气象局气象宣传与科普中心特聘专家朱定真说。 按照世界气象组织规定，气象部门发布的温度是百叶箱中温度计所测量的温度。百叶箱须设在草坪上， 离地面1.5米，周围较开阔，无高大建筑、树木等阻挡风或遮挡阳光。 然而，在同一座城市内，百叶箱中和水泥路、柏油路上的温度是不一样的。在阳光强烈的情况下，水泥 路、柏油路1.5米高度上的温度，比百叶箱里测得的温度可能会高4至5摄氏度。路面情况、周边环境的 差异都会造成测量温度的不同。 原题：《高温天气下，为何人们会感觉比预报温度要 ...

Group 1 - The article discusses the ongoing high-temperature weather across various regions in China, with predictions of temperatures exceeding 35 degrees Celsius in several areas, and some regions reaching up to 39 to 42 degrees Celsius [1][3] - The Central Meteorological Administration issued an orange alert for high temperatures on July 14, indicating the severity of the heatwave [1] - The article highlights the differences between forecasted temperatures and actual perceived temperatures due to environmental factors, such as urban heat islands and humidity levels [2][3] Group 2 - The article explains that the subtropical high pressure has moved northward earlier this year, contributing to the prolonged high-temperature conditions and increased humidity in central and eastern China [3] - A national-level health risk warning related to high temperatures has been issued, categorizing risks into five levels, allowing the public to take appropriate measures to mitigate health impacts [3]

比如体感温度和大气湿度密切相关，空气湿度较大时人就会感到闷热。只要气温达到33℃左右、相对湿 度达到80%，人就会感到非常闷热、不舒服，甚至容易中暑。此外，个体差别也导致体感温度不一样。 人的胖瘦、所穿衣服的深浅、进行不同强度的活动、甚至个人心情起伏等都会影响体感温度。 朱定真表示，未来气象部门的预报会越来越向人们的需求倾斜，比如可能会预报体感温度，而不再是简 单告诉大家气温为多少度，播报的信息中还要包含气温38℃和39℃有什么差异、哪些领域会受到影响 等。 在同一座城市内，百叶箱和水泥路、柏油路上的温度不一样。在阳光强烈的情况下，水泥路、柏油路 1.5米高度上的温度，比百叶箱里测得的温度可能会高4℃至5℃。这也就有高温天气下，有人测出路面 温度高达50℃，但预报数值偏低的"温差"了。 那为什么预报的气温和大家的感觉也差不少呢？ "因为气象的观测环境和个人在室外的环境是不一样的。气温是近地层大气环境的温度，而大家感受到 的是体感温度，其受到气压、风力、湿度等多重影响。"朱定真说。 据中央气象台预报，未来一周河北南部、黄淮、江汉、江淮、江南北部、陕西关中、四川盆地等地将出 现持续性高温天气，部分地区最高气温可达 ...

Core Viewpoint - The ongoing high-temperature weather poses health risks, particularly for vulnerable groups such as the elderly, pregnant women, children, and individuals with chronic illnesses [1][4]. Group 1: Health Risks and Recommendations - The National Disease Control Bureau and the China Meteorological Administration have issued health risk warnings and recommendations during high-temperature alerts, advising the general public to stay indoors and reduce outdoor activities during yellow alerts, while vulnerable groups should avoid going outside during orange alerts [4]. - During red alerts, outdoor workers are advised to manage their work schedules wisely and use heat prevention supplies, seeking medical attention if they experience severe discomfort [4]. Group 2: Outdoor Activity Precautions - Before outdoor activities, individuals should take sun protection and cooling measures, such as using umbrellas, wearing hats, and avoiding clothing that hinders heat dissipation [6]. - It is recommended to hydrate with small amounts of saltwater or sports drinks to replenish lost fluids and electrolytes, especially during intense exercise, with a suggested intake of 250 to 500 milliliters of warm water per hour [6]. Group 3: Travel and Personal Protection - Prior to traveling, individuals should monitor weather changes at their destination and prepare necessary personal protective items and medications, including checking if vaccinations are needed for international travel [8]. - During travel, it is crucial to prevent foodborne illnesses by practicing good hand hygiene, avoiding raw foods, and drinking safe water [8]. Group 4: Understanding Temperature and Humidity - The concept of "feels-like" temperature, which can be significantly higher than the actual air temperature due to humidity, is emphasized, with conditions where the perceived temperature can exceed the actual temperature by 1-7 degrees Celsius [10]. - In high humidity conditions, even temperatures below 30°C can feel excessively hot, leading to discomfort and health risks [10].

央视网消息：近期，我国中东部地区持续高温天气。中央气象台预计，未来一周，华北南部、黄淮、江汉及陕西关中等地将持续35℃以上 高温，局地超过40℃，部分地区可能接近或突破历史同期极值。此外，下周起，四川盆地、江淮、江南北部等地也将出现阶段性高温天气。 气象大数据显示，我国多地高温季开启得越来越早，而且热得越来越持久。据国家气候中心气象灾害风险管理室高级工程师刘远介绍，今 年，高温天气特征较为突出。截止目前，全国平均高温日数接近6天，是常年同期的两倍多，为历史同期最多。今年，首发高温过程出现在5月 19—21日，较常年提前半个多月。统计数据显示，高温过程首次出现时间以每十年2.2天的速率不断提前。 另外，今年高温还有一个特点就是极端性强。今年以来，已有147个国家气象站出现了极端高温，13个国家气象站突破历史极值，曾经的 避暑胜地纷纷加入高温的行列。比如说，承德今年出现了连续3天高温天气，黑龙江的北极村、漠河等地在6月底也出现了35°C以上的高温天 气。 每天发往东北4.5万吨煤 全力迎峰度夏 中国气象局公共气象服务中心首席慕建利表示，山东、河南、河北南部、新疆南部及吐鲁番盆地、陕西关中、四川中东部、重庆的部分地 ...

原标题：北方也有"回南天"？ 近期天气为何又湿又热 【热点回应】 近日，北方多地出现高温高湿天气，不少北方的小伙伴感受到有如南方般的潮湿后感叹：饼干软 了，衣服也馊了，莫不是北方也有"回南天"？ 据气象数据测算，当气温高于一定数值后，在相同的气温下，相对湿度越大，体感温度的增幅就越 明显。在不考虑风速和太阳辐射因素的情况下，当一个地方气温达到32℃，湿度在50%左右时，体感温 度就可达到高温标准，当相对湿度达到100%时，体感温度甚至能超过50℃。 第二问：这种天气未来是否会成为北京夏季常态？ 事实上，北京每年夏季都会有一段时间出现这样的湿热天气，一般出现在7月中下旬，原因就是副 热带高气压向北移动，将暖湿空气带到我国北方，致使华北一带会出现高温高湿的闷热天气。 北京也是受此次高温高湿天气影响的典型地区之一。数据显示，7月3日夜间到4日白天，华北地区 相对湿度均达到85%以上，北京7月3日相对湿度甚至短暂达到了100％。北方地区天气为什么会如此湿 热，正常吗？就公众关心的问题，科技日报记者6日采访了相关专家。 第一问：近期北方"桑拿天"是什么原因形成的？ 中央气象台首席预报员孙军介绍，这次北方的湿热天气与西太 ...

今明天，中东部较大范围降水过程持续，今天长江中下游地区仍为强降雨核心影响区域。中央气象台预 计，今天，湖北东部、安徽南部、江西北部、江苏南部、上海、浙江中北部、湖南东北部和西南部、贵 州东南部、广西北部以及云南西北部、西藏东南部等地部分地区有大到暴雨，其中，安徽南部、浙江西 北部、湖南西南部、贵州东南部、广西北部、云南西北部、西藏东南部等地部分地区有大暴雨。 央视网消息：据中国天气网，端午假期第二天（6月1日）也是儿童节，中东部较大范围降雨过程持续， 长江中下游仍为核心降雨区。明后天，降雨区域有所南压，华南等地雨势增强。公众需关注强降雨区域 变化，出行注意交通安全。同时，东北迎来凉爽天气，但华南天气闷热，多地体感或超40℃，需及时补 水降温。 长江中下游今天部分地区仍有大暴雨 明后天强降雨区域南压至华南等地 昨天，中东部降雨发展增多，长江中下游等地雨势较强，其中安徽中南部、浙江中北部、江西北部、湖 北大部、重庆北部、云南西部、西藏东南部、海南岛东南部以及新疆西南部等地部分地区出现大雨或暴 雨，安徽黄山、宣城、安庆，浙江杭州，江西九江，湖北黄冈，云南怒江等地大暴雨。 东北地区大部享清凉 华南天气闷热多地体感可超 ...