异常高湿导致强降水多发散发 气象卫星监测显示，过去两天，四川、甘肃、河南、安徽等地部分地区出现大雨或暴雨。降水面从 四川盆地到黄淮，雨水影响下，局地散发的强降水特征较为明显。 在气温方面，7月5日至8月5日，全国平均气温较常年同期偏高1.5℃，为1961年以来历史同期最 高。 国家气候中心首席预报员 支蓉：7月以来，气候异常的主要原因与西北太平洋副热带高压位置有 关。 根据中央气象台相关资料分析显示，今年北京、河北、青海、安徽、河南等地降水呈现出"面上不 均匀、单点强度强"的特征。眼下正处于"七下八上"防汛关键期，这一时期的夏季风将水汽和热量源源 不断地输送至华北、黄淮、江汉、江淮等地，暖湿空气不断堆积，大气可降水量非常丰沛，导致降雨增 多。 此外，部分地区降水也会在夜间显著增强。这是因为白天太阳辐射加热地表，大气混合层深厚，达 1.5千米左右，混合层内的大气受地表摩擦影响，风速较小。而到了晚上，日落后地表冷却，混合层高 度骤降，离地1千米左右的空气，可以摆脱地表摩擦的束缚，风速将明显增大，输送更多的水汽和能 量。同时，风速增加后形成的脉冲，以及受地形抬升等各种因素作用，更易触发对流并形成短时强降 水。 气象 ...

Group 1 - The article emphasizes the importance of implementing Xi Jinping's directives to ensure public safety during flood prevention and disaster relief efforts [1] - Continuous heavy rainfall since August 7 has led to mountain flood disasters in Gansu's Yuzhong County, affecting eight towns [3] - Rescue operations are ongoing, with personnel conducting thorough searches in severely affected areas such as Malian Tan Village and Xingshan Mountain Village [3] Group 2 - Medical treatment and relocation of affected individuals are being expedited, with 15 rescued individuals receiving treatment for injuries at Yuzhong County First People's Hospital [5] - A total of 9,800 individuals have been relocated to 54 hotels and 14 designated shelters, including schools and village committees [5] - As of August 9, power supply has been restored to 80% of the affected areas, and communication services are largely back online [7] Group 3 - The Ministry of Finance and the Ministry of Emergency Management have allocated 120 million yuan in emergency disaster relief funds to support rescue and recovery efforts in Gansu and Inner Mongolia [9] - The article highlights the ongoing critical flood prevention period, with various regions actively preparing for potential heavy rainfall and secondary disaster risks [11] - The Central Meteorological Observatory forecasts that the main rain belt will shift southward, impacting areas from Sichuan and Chongqing to Jiangsu and Anhui [11]

高温方面，中央气象台预计，未来一周，华北南部、黄淮大部、江汉、江淮西部、江南中北部、四 川盆地及陕西中南部等地将有35℃至38℃高温天气，局地日最高气温可达39℃至41℃。 近期，我国南北方高温暴雨并存，天气格局复杂多变。 记者从中央气象台获悉，未来几天，华北、华南等地仍有强降水，且降水区域与前期高度重叠；与 此同时，中东部地区还有范围广、强度大的高温天气。8月5日，中央气象台继续发布暴雨橙色预警、强 对流天气蓝色预警和高温橙色预警。 降水方面，中央气象台首席预报员方翀解释，未来一段时间雨带呈南北分布，成因各有不同。北方 降水形成原因是由于副热带高压与北侧西风槽、南侧水汽输送的配合，结合低层风向与地形影响；南方 降水形成原因则是副热带高压南侧季风对流较强，导致降水持续时间长、累计雨量大。 具体来说，8月5日至6日，雨带东移南下至黄淮一带，华北东南部和黄淮地区出现明显降水，有利 于缓和当地旱情；华南地区也有大到暴雨，局地累计雨量可达300毫米至500毫米。上述地区降水都将在 6日减弱。8月7日至9日，强降水将重回北方地区，过程期间将出现比较明显的强对流天气；10日至13 日，强降水主要位于西南地区至长江中下游地 ...

今年7月23日以来，西北地区东部、华北和东北地区已出现多日强降水，北京、河北、天津、山西及内 蒙古等地部分地区遭遇暴雨或大暴雨，北京、河北局地出现特大暴雨。中央气象台首席预报员董全表 示，上述地区仍可能出现大到暴雨、局地大暴雨，其中西北地区地质条件脆弱，青海、甘肃需防范山洪 和地质灾害；华北北部及内蒙古中东部需警惕与前期降雨叠加的致灾风险。 近期，我国南北方高温暴雨并存，天气格局复杂多变。 "华北等地前期降水已使土壤含水量接近饱和，新一轮降水可能与前期落区重叠。"董全分析，山地灾害 和中小河流洪水存在持续演进过程，降雨渗透会增加坡体重量、软化地层，大幅降低抗剪强度，易引发 地质灾害，雨停后切不可放松警惕。需特别警惕单点强降水引发的中小河流洪水、滑坡和泥石流等灾 害。 记者从中央气象台获悉，未来几天，华北、华南等地仍有强降水，且降水区域与前期高度重叠；与此同 时，中东部地区还有范围广、强度大的高温天气。8月5日，中央气象台继续发布暴雨橙色预警、强对流 天气蓝色预警和高温橙色预警。 降水方面，中央气象台首席预报员方翀解释，未来一段时间雨带呈南北分布，成因各有不同。北方降水 形成原因是由于副热带高压与北侧西风槽、南 ...

中新网8月5日电 国家防灾减灾救灾委员会办公室、应急管理部5日举行汛期安全知识发布会。会 上，应急管理部新闻发言人、新闻宣传司司长申展利通报8月份全国自然灾害风险形势。申展利表示，8 月份，我国七大江河流域全面进入主汛期。华北、东北、华东、华南、西南部分地区洪涝和风雹灾害风 险高，海河流域、松辽流域部分河流可能发生较大洪水；预计有2到3个台风登陆或影响我国，1个台风 影响长江以北地区；大兴安岭、新疆北部、中南、西南局部地区森林火灾风险较高；云南西部局部地区 地质灾害风险高；长江中下游、江淮、新疆中北部局部地区存在高温干旱风险。 申展利指出，近年来，受全球气候变化影响，灾害性天气的突发性、极端性、不确定性愈加明显， 特别是进入汛期，突破历史纪录和传统认知的灾害频繁发生。当前，正处于"七下八上"防汛关键期，这 是一年中防汛形势最复杂、最严峻的时期。同时，暑期外出旅游、野外施工作业处于旺季，安全风险较 为突出。 ...

自7月23日以来，北方多地持续遭受强降水影响，内蒙古、河北北部、北京及太行山前区域成为强 降水核心区。"高温和强降雨多发、分散、影响范围大是近期全国天气形势的特点。"中央气象台首席预 报员张涛介绍，目前，一条西南至东北向雨带稳定维持在华北北部和东北中南部，给内蒙古东南部、河 北北部、北京、辽宁、吉林等地带来集中降雨。雨带目前正缓慢向南压且强度减弱，上述地区降雨强度 也将明显减弱。 截至7月26日，我国北方共有19个站点打破同期历史月极值，其中13个站点刷新历史极值。在此轮 降水过程期间，陕西北部、内蒙古、河北北部、北京等地累计降水量普遍超过100毫米，石家庄北部、 保定西部等区域累计降水量突破400毫米，充分展现此次过程的极端性。 近期，我国天气形势复杂多变，华北地区遭遇连续强降雨天气。目前正值"七下八上"防汛关键期， 全国呈现强降雨与大范围高温天气并存的典型汛期格局。本轮华北降水总体情况如何？未来发展趋势怎 样？公众又该如何有效防范？记者就此采访了相关专家。 未来三天，多雨、大范围高温仍是华北天气主要发展趋势。张涛表示，北方地区将会有两次降雨天 气过程，一是目前华北北部到东北中南部的雨带维持带来叠加降雨；二 ...

新华社北京7月29日电 连日来，北京遭遇连续极端强降雨，造成重大灾害。此次降雨有哪些特点？降雨是如何形成的？后续还有哪些需要注意的 情况？专家与相关部门为您一一解读。 降雨有何特点？ 降雨如何形成？ 漫长降雨如何形成？从宏观上看，西太平洋副热带高压是影响我国天气的关键系统，其季节性活动直接关系各地雨季进程。中国气象服务协会会 长许小峰介绍，从整体情况来看，目前正值"七下八上"防汛关键期，副热带高压稳定影响到华北地区，北京已进入强对流天气多发的多雨水时 段。 具体而言，近期北京降雨可分为两个时期。记者梳理北京市气象部门发布的信息，24日至27日期间的降雨，系受副热带高压影响产生。许小峰介 绍，这一时期北方恰有弱冷空气不断南下，与副热带高压边缘暖湿气流交汇，形成降雨带，也就是典型的华北雨季形势。而28日夜间至29日上午 的降雨则是因为受高空槽及台风外围水汽远距离输送影响产生，自西向东给北京带来了相对均匀的大面积降雨。 7月27日在北京市密云区冯家峪镇西庄子村拍摄的河道。新华社记者 鞠焕宗 摄 接下来如何防范？ 气象部门介绍，29日14时30分许，影响北京市的强降雨云团已移出。北京市气象台7月29日14时30分解除 ...

Core Viewpoint - The recent extreme rainfall in northern China, particularly in regions like Beijing and Hebei, has led to significant flooding and infrastructure damage, with the current weather patterns attributed to the seasonal "Seven Down, Eight Up" period, which is characterized by concentrated rainfall and severe weather events [1][3][6]. Summary by Sections Rainfall and Flooding Impact - From July 23 to 28, 41 rivers in Tianjin, Hebei, and Inner Mongolia experienced flooding above warning levels, with the maximum exceeding 2.39 meters [1] - Beijing's emergency response was activated on July 28 due to heavy rainfall, with predictions of over 150 mm of rain in most areas and localized amounts reaching 300 mm [3][4] - The extreme rainfall has caused landslides and damage to infrastructure, prompting rescue operations in affected areas [9] Meteorological Analysis - The current heavy rainfall is linked to a strong subtropical high-pressure system that has been stable and positioned north of 25°N, facilitating moisture transport to northern China [7] - The interaction of warm moist air with cold air fronts has resulted in significant precipitation events [7][9] - The geographical features, such as the Taihang Mountains, have enhanced rainfall through orographic effects, leading to localized extreme weather [9] Historical Context and Predictions - The onset of the rainy season in North China began on July 5, marking the earliest start since 1961, although the overall precipitation from March 15 to July 22 was 303.9 mm, which is 6.2% below the historical average [10] - Forecasts indicate that during the "Seven Down, Eight Up" period, regions including Inner Mongolia, Beijing, and parts of Northeast China may experience 20-50% more rainfall than usual, with potential for extreme weather events [10]

Core Viewpoint - The article discusses the current weather patterns in China, highlighting the early onset of the rainy season and the associated risks of flooding and drought, particularly in northern and southern regions respectively [1][3]. Group 1: Weather Patterns and Predictions - The average national precipitation is 6.2% lower than the historical average, with the highest number of high-temperature days recorded for this period [1]. - The rainy season has started 13 days earlier than usual, leading to increased risks of frequent heavy rainfall in northern China, where flood control infrastructure is relatively weak [3]. - Southern regions, particularly the Yangtze River basin, are experiencing reduced rainfall, raising concerns about drought conditions [3]. Group 2: Rainfall Distribution and Impact - The rainfall distribution for August is predicted to be uneven, with northern and northeastern regions, as well as southern areas like Guangdong and Hainan, experiencing 20-50% more rainfall, while regions like Chongqing, Hunan, and Hubei may see 20-50% less [6]. - The increased rainfall in certain areas necessitates heightened vigilance against flood and geological disasters, especially in northern regions that have faced severe flooding in recent years [6]. Group 3: Health and Climate Mapping - The national meteorological health map is based on 30 years of data from 2,400 counties, aiming to provide a clear understanding of how weather affects health and well-being [7][9]. - The map evaluates climate comfort based on multiple factors, including temperature, humidity, wind speed, and air quality, to guide the public in making informed decisions about health and wellness [10][12].

Group 1 - A strong rainfall process is ongoing in northern China, with increased rainfall expected in Shandong and Liaoning, including heavy rain and localized torrential rain [1][2] - Typhoon "Wipha" is set to make landfall in the coastal area between Zhuhai and Zhanjiang in Guangdong, with the typhoon rain reaching its peak in Guangdong, Guangxi, and Hainan [2][3] - The Central Meteorological Administration forecasts heavy rain in various regions, including parts of Hainan, Guangdong, Hong Kong, Macau, and northeastern Liaoning, with some areas experiencing torrential rain [2][3] Group 2 - The high-temperature range in China is significantly reducing, but areas such as North China, Huanghuai, and Jiangnan still experience persistent high temperatures, with major cities recording temperatures of 35°C or above [6] - Despite the reduction in high temperatures due to increased rainfall, regions like Xinjiang, Anhui, and the Sichuan Basin will continue to experience prolonged high temperatures over the next week [6]