来源： @ 中央气象台 转自：北京日报客户端 东北地区今天升温很快，注意防范下周两轮冷空气接连影响，气温起伏大，去东北旅游的小伙伴们保暖 衣物要带足。 ...

从天气系统看，直接导致近期我国冷空气活动的是东移的中高纬度高空槽。此外，北极涡旋分裂南 下的冷空气，起到加深中高纬度高空槽，加强冷空气势力的作用。 近期天气将如何发展？ 12月中下旬我国中东部气温起伏较大。 近日，网上有人发布消息称，"12月20日前，全国气温将迎来大回暖"，这个说法准确吗？记者采访 了中央气象台首席预报员徐珺。 先说结论，不够准确。 12月17日至18日，我国中东部大部气温回升，普遍回升4—6摄氏度，东北地区、内蒙古东部等地部 分地区回升幅度可达10摄氏度以上。可见，明显的气温回升主要集中在东北地区和内蒙古等地，中东部 其他地区整体气温回升幅度并不算大。19日起，新一股冷空气将从新疆启程，自西向东影响中东部大部 地区。 中央气象台预计，未来三天，中东部大部地区降水稀少、日照充足，气温持续回升，最高气温10摄 氏度线将向北推进至黄淮、陕西南部一带。 前期气温回升的原因是什么？ 近期影响我国冷空气活动较为频繁，气温起伏明显。前期经历10日至13日寒潮和补充冷空气作用， 中东部大部地区气温下降，19日冷空气来临前中东部大部受高空槽前偏南气流暖平流增温、以及晴好天 气辐射增温影响，出现气温回升。 从 ...

大雪节气将至 长三角气温"搭过山车" 中新社南京12月4日电 (记者 徐珊珊)长三角多地12月4日清晨最低气温降至近期低点，而一场迅猛的气 温反弹已箭在弦上，预计6日至7日(大雪节气)，长三角地区最高气温将大幅回升至20℃上下。 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众号(微信搜索"中新经纬"或"jwview")，看更多精彩财经资讯。 这趟气温"过山车"尚未到站。气象预报显示，7日至8日，将有一股弱冷空气影响长三角北部，带来小幅 降温。但其影响短暂，此后气温将再度回升。值得注意的是，12日至13日前后，受较强冷空气影响，长 三角气温可能再度经历明显下降。 气象专家提醒，未来几天，长三角地区总体干燥少雨，气温起伏大，公众需及时关注天气预报，灵活增 减衣物。(完) 来源：中国新闻网 编辑：付健青 本文为转载内容，授权事宜请联系原著作权人 冷空气影响叠加晴空辐射降温，使得4日清晨长三角地区寒意显著。中央气象台数据显示，12月3日至12 日，影响中国的冷空气活动频繁，但强度整体偏弱。随着寒潮结束，全国大部分地区将以升温为主，气 温起伏剧烈。6日，华北南部到长 ...

Summary of Key Points Core Viewpoint - The weather in China is experiencing significant changes, with heavy rainfall and temperature drops in the south, while the north sees fluctuating temperatures. [1] Group 1: Weather Conditions - Rain and snow in northeastern regions and the Tibetan Plateau are expected to decrease, while rainfall in the south is intensifying, with some areas facing heavy rain or torrential rain. [2][3] - The Central Meteorological Administration forecasts small to moderate snow or sleet in parts of Heilongjiang, Tibet, and Qinghai, with localized heavy snow expected in northeastern Tibet. [3] - In the south, areas such as Yunnan, Hunan, and Hainan are likely to experience moderate to heavy rain, with some regions facing heavy rain or torrential rain. [3][4] Group 2: Temperature Changes - Southern regions are experiencing a drop in temperature, with maximum temperatures significantly lower than the same period in previous years. For instance, Guiyang's maximum temperature is expected to be only 11°C, and Kunming's is forecasted at 10°C. [5] - Northern regions, including Northeast and North China, are seeing notable temperature fluctuations, with cities like Shenyang experiencing a drop from 14°C to 8°C due to cold air and rain. [5]

Summary of Key Points Core Viewpoint - The article discusses the weather conditions in China, highlighting significant rainfall and temperature fluctuations across different regions, with a focus on the southern areas experiencing heavy rain and the northern regions facing temperature changes. Group 1: Weather Conditions - The northeastern region and the Tibetan Plateau are expected to see a reduction in rain and snow, while the southern regions, particularly Southwest and Jiangnan, will experience intensified rainfall, with some areas facing heavy rain or even torrential downpours [1][3][4]. - Specific forecasts indicate that areas such as southeastern Heilongjiang, eastern Jilin, and parts of Tibet will experience light to moderate snow or sleet, with localized heavy snow expected in northeastern Tibet [3][4]. Group 2: Temperature Changes - The article notes a significant drop in temperatures across many southern cities, with maximum temperatures in Guiyang reaching only 11°C and in Kunming dropping to 10°C, potentially setting new lows for the second half of the year [8]. - In contrast, northern regions like Northeast and North China are experiencing notable temperature fluctuations, with cities like Shenyang seeing a drop from 14°C to 8°C due to cold air and precipitation [8].