大气扩散条件
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中央气象台:华北中南部黄淮中西部等地大气扩散条件转差
Xin Lang Cai Jing· 2025-12-25 11:12
来源:中央气象台 华北中南部黄淮中西部等地大气扩散条件转差 长三角区域 26日至28日白天,华北中南部、黄淮中西部等地大气扩散条件有所转差,部分地区有轻至中度霾。28日夜间起,受冷 空气影响,上述地区霾天气逐步减弱或消散。 具体预报如下: 京津冀及周边区域 26日至28日白天,区域中南部大气扩散条件有所转差,部分地区有轻至中度霾。28日夜间起,受冷空气影响,区域霾 天气逐步减弱消散。 25日夜间至26日,区域大气扩散条件较好,无明显霾天气。27日至29日,区域北部大气扩散条件一般,部分地区有轻 度霾。 汾渭平原 26日至27日,区域中南部大气扩散条件逐渐转差,部分地区有轻度霾。28日白天起,受冷空气影响,区域霾天气逐步 减弱消散。 华中区域 25日夜间至26日,区域大气扩散条件较好,无明显霾天气。27日至29日,区域大气扩散条件一般,部分地区有轻度 霾。 珠三角区域 未来一周,区域大部大气扩散条件较好,无明显霾天气。 未来一周,区域大部大气扩散条件较好,但在冷空气间歇期,辽宁中部、黑龙江中南部等地的部分地区有轻度霾。 西北区域 未来一周,区域大部大气扩散条件较好,但新疆天山北坡部分地区有轻至中度霾,新疆南疆盆 ...
华北南部黄淮等地霾天气逐渐减弱或消散
Yang Shi Wang· 2025-12-20 01:40
央视网消息:据中央气象台网站消息,受冷空气影响,20日,华北南部、黄淮、江淮、江汉、江南北部等地的霾天气 逐渐减弱或消散。 21日至25日,全国大部大气扩散条件较好,无大范围霾天气过程。但21日至22日,华北中南部大气扩散条件较差,部 分地区有轻度霾,局地中度霾。 此外,20日早晨至上午,河北南部、河南东部、安徽北部、福建、四川盆地南部、新疆天山北坡等地的部分地区有大 雾天气,局地有能见度不足200米的强浓雾。 20日,区域中南部霾天气逐渐减弱。21日至22日,区域中南部大气扩散条件较差,部分地区有轻度霾,局地中度霾。 23日至25日,区域大气扩散条件较好。 长三角区域 20日,受上游污染物传输影响,区域大部地区有轻至中度霾天气,局地短时有重度霾。21日至22日,苏皖北部大气扩 散条件一般,部分地区有轻度霾。23日至25日,受冷空气影响,区域大部大气扩散条件较好。 汾渭平原 未来一周,区域大部地区大气扩散条件较好,但在冷空气间歇期,陕西关中有轻度霾天气。 华中区域 20日,湖北、湖南中东部、江西北部等地的部分地区有轻至中度霾天气。21日至25日,区域大部大气扩散条件较好。 珠三角区域 未来一周,区域大部大气扩 ...
合肥中度污染超过24小时
Xin Lang Cai Jing· 2025-12-19 16:22
(来源:新安晚报) 据长三角区域环境气象预报,12月19日,长三角西部和北部大气扩散条件一般,有轻至中度霾。20日凌 晨起,受上游污染物传输影响,区域大部地区的霾天气将短时加重。21日至22日,苏皖北部大气扩散条 件一般,部分地区有轻度霾。23日至25日,受冷空气影响,区域大部大气扩散条件较好。 转自:新安晚报 新安晚报 安徽网 大皖新闻记者 赵明玉 本报讯 12月19日,记者查询数据发现,合肥市空气质量在过去24小时时间里维持在中度污染。气象部 门预计,21日至22日,安徽北部还有霾。 12月19日,不少合肥市民感觉天空仍是灰蒙蒙的。截至12月19日上午10点,合肥市空气质量在过去24小 时里一直维持在中度污染状态(AQI指数达到或超过150)。 ...
区域污染排放量处于高位,昨夜北京空气连续13个小时达重污染
Xin Jing Bao· 2025-11-06 03:43
Core Insights - The air pollution event in the Beijing-Tianjin-Hebei region began on November 3, with PM2.5 concentrations significantly increasing due to regional transmission, peaking at 162 micrograms per cubic meter on November 5 [1][2] Group 1: Pollution Causes - The high pollution emission levels in the region before the heating season are identified as the fundamental cause of the pollution event [3] - The operational rates of industries such as brick, tile, and ceramics increased by 3 percentage points year-on-year, and heavy truck traffic rose by 7% during this period [3] - The region is experiencing unfavorable atmospheric diffusion conditions due to the transition from autumn to winter, leading to the accumulation of pollutants [3] Group 2: Impact on Beijing - During the pollution event, nearly 70% of Beijing's pollution was attributed to regional transmission, with local contributions accounting for 34% [4] - The average PM2.5 concentration in Beijing rose rapidly, with a peak increase of 17 micrograms per cubic meter within one hour [4] - Forecast models indicate that from November 6 to 8, diffusion conditions will improve, leading to a potential reduction in pollution levels, with expectations of reaching a good air quality level by November 7 [4]
暴雨、大暴雨,要来了!
中国基金报· 2025-10-11 23:35
Weather Alerts - The Central Meteorological Observatory issued a blue rainstorm warning, predicting heavy rain in regions including southern Shaanxi, northeastern Sichuan, and most of Chongqing from October 12, 08:00 to October 13, 08:00, with local areas experiencing extreme rainfall of 100-120 mm [3][5] - The warning includes potential short-term heavy rainfall with maximum hourly precipitation of 20-30 mm, and localized areas may exceed 50 mm, along with thunderstorms and strong winds [3][5] Typhoon Update - Typhoon "Nakiri," the 23rd typhoon of the year, has intensified from a tropical storm to a strong tropical storm as of October 11, with maximum wind speeds of 28 m/s and a minimum central pressure of 982 hPa [7][8] - The typhoon is expected to move northeast at a speed of 25-30 km/h, gradually weakening and transitioning into a temperate cyclone by October 14 [8] Air Quality and Meteorological Conditions - Most regions in the country are experiencing favorable atmospheric diffusion conditions, with no significant haze expected; however, from October 13 to 16, some areas in central and southern regions may experience short-term haze [11][12] - Specific regions such as the Yangtze River Delta and the Fenwei Plain are forecasted to have good atmospheric conditions with no significant haze [13][14] - The central and southwestern parts of Hunan may see light to moderate haze on October 12, but conditions are expected to improve later [15]