（来源：中央气象台网站） 来源：中央气象台网站 北方多冷空气活动 9日前后较强 摘要： 国内方面，昨日，全国大部地区降水稀少，内蒙古东部、黑龙江、吉林等地出现小到中雪或雨夹雪，北方部分地区出 现6～8级、局地10～12级阵风。未来三天，内蒙古、东北地区等地有降雪，四川、云南、贵州等地部分地区有雨雪天 气，北方部分地区有大风降温，关注对交通运输、人体健康的影响；江西、福建、广东、云南等地关注森林防火工 作。 全球方面，昨日，澳大利亚东北部等地出现强降雨；波黑、日本等地出现特强降雪。未来三天，南欧东北部仍有特强 降雪；澳大利亚高温天气持续；日本中北部等地多降雪。 一、国内天气情况 1.实况 昨日内蒙古黑龙江吉林出现降雪天气 北方部分地区风力较大 昨日8时至今日6时，内蒙古东部、黑龙江、吉林等地出现小到中雪或雨夹雪；内蒙古、华北西部和北部、东北地区中 南部、黄淮西部等地出现6～8级阵风，局地10～12级；今日6时较昨日6时，新疆西部、内蒙古中东部、江南、华南等 地部分地区出现4～8℃、局地10℃以上降温。 2.重点天气预报 北方多冷空气活动 9日前后较强 受冷空气影响，7日，东北、华北北部、内蒙古东部等地部分地区有 ...

Core Points - Continuous rainy weather in Shaanxi Province since September has led to the growth of moss on sections of the Xi'an City Wall, particularly between Yongning Gate and Wenchang Gate, attracting public attention [1] - Experts indicate that the moss is only growing on the surface of the wall and does not penetrate deeply, thus not damaging the structural integrity of the wall [3] - The local meteorological department reported that the cumulative rainfall in many areas of Shaanxi has reached historical highs for this period, with six regional heavy rain events recorded, ranking second since 1961 [7] Weather Conditions - The persistent rainy weather is attributed to the stable presence of the subtropical high pressure in the Huaxi-Huanghuai region, with Shaanxi located in a warm and humid airflow zone, combined with multiple short-wave troughs from the westerly wind belt [5] - The local meteorological department forecasts intermittent rainfall in most of Shaanxi on the 15th, with a return to rain on the 16th and 17th, but a significant reduction in rainfall intensity is expected after the 20th [9]

Core Points - Continuous rainy weather in Shaanxi Province since September has led to the growth of moss on sections of the Xi'an City Wall, particularly between Yongning Gate and Wenchang Gate, attracting public attention [1] - Experts indicate that the moss is only growing on the surface of the wall and does not penetrate deeply, thus not damaging the structural integrity of the wall [3] - The local meteorological department reported that the cumulative rainfall in many areas has reached historical highs for this period, with six regional heavy rain events occurring, ranking second since 1961, only behind 2021 [7] Weather Conditions - The persistent rainy weather is attributed to the stable presence of the subtropical high pressure in the Huaxi-Huanghuai region, with Shaanxi located in a warm and humid airflow zone, combined with multiple short-wave troughs from the westerly wind belt [5] - The local meteorological department forecasts intermittent rainfall on the 15th, with a return to sunny to partly cloudy weather, followed by another round of significant rainfall from the 16th to the 17th [9]

Core Viewpoint - The article discusses the significant weather differences between northern and southern China in October, highlighting the impact on agriculture and public health due to the contrasting conditions of cold and wet in the north versus hot and dry in the south [1][2]. Weather Disparity - Northern regions, including Northwest, North China, and Huanghuai, have experienced increased rainfall, while southern areas like Jiangxi, Zhejiang, Fujian, and northern Guangdong have seen temperatures exceeding 35°C, with some places reaching above 38°C [2][3]. Causes of Weather Differences - The disparity is attributed to the influence of the subtropical high-pressure system, which creates a "moisture transport belt" that brings warm, moist air from the sea to the north, leading to prolonged autumn rains in the northwest and North China [3][4]. Agricultural Impact - The contrasting weather poses challenges for agricultural production, particularly during the autumn harvest and planting season. In the north, excessive rainfall has led to waterlogged soils, delaying the harvest of corn and affecting winter wheat planting [5][6]. - In the south, high temperatures can negatively impact crops like rice, causing early root aging and reduced yield due to high-temperature stress [6]. Health Implications - The unusual weather patterns also affect public health, with increased cases of respiratory diseases in the north due to cold and damp conditions, while the south faces risks of heat-related illnesses [7][8][9]. - Health experts recommend precautions for vulnerable populations, including maintaining warmth in cold conditions and managing hydration and heat exposure in hot weather [8][9].

Core Points - The prolonged high temperatures in Zhejiang have been recorded until mid-October, with the latest high temperature day occurring on October 11, marking a historical record [1] - A series of cold air masses are expected to influence the weather in Hangzhou, leading to a significant drop in temperatures and the end of the high-temperature period [1][2] Summary by Sections Weather Patterns - The high temperatures have persisted due to the reluctance of the subtropical high-pressure system to retreat, with significant temperature variations across different regions [1] - The arrival of cold air is expected to lower temperatures significantly, with the main urban area experiencing a maximum temperature of around 28°C [1][2] Cold Air Impact - The first two cold air masses are not strong enough to end the warm weather, but the third cold air mass arriving on October 18 is anticipated to bring more substantial cooling and precipitation [2] - The forecast indicates that by October 19, the minimum temperature in the main urban area will drop below 20°C, with maximum temperatures not exceeding 25°C [2] Tropical Cyclone Activity - Concurrently, there is potential tropical cyclone activity in the Northwest Pacific, with a possibility of a new typhoon forming around October 17 [2] - The interaction between the cold air and the subtropical high-pressure system may affect the trajectory and intensity of the developing cyclone, with potential impacts on weather conditions in Hangzhou [2]

Core Viewpoint - The article discusses the significant weather differences between northern and southern China in October, highlighting the impact on agriculture and public health due to the contrasting climatic conditions [1][2]. Weather Disparity - Northern regions, including Northwest and North China, are experiencing increased rainfall and cooler temperatures, while southern regions, such as Jiangnan and South China, are facing persistent high temperatures, with some areas exceeding 35°C [2][3]. Meteorological Explanation - The weather patterns are influenced by the subtropical high-pressure system, which causes dry and hot conditions in the south while leading to rainfall in the north due to the interaction of warm moist air and cold air masses [3][4]. Agricultural Impact - The contrasting weather poses challenges for agricultural production, particularly during the autumn harvest and planting season. In northern regions, excessive rainfall has led to waterlogged soils, delaying the harvest of crops like corn and affecting winter wheat planting [5][6]. - In southern regions, high temperatures can negatively impact crops such as rice, leading to reduced yields and increased susceptibility to pests and diseases [7]. Public Health Concerns - The unusual weather patterns also affect public health, with increased cases of respiratory illnesses in the north due to cold and damp conditions, while the south sees cases of heat-related illnesses like heatstroke [8][9][10]. - Health experts recommend precautions for vulnerable populations, including the elderly and those with pre-existing conditions, to mitigate health risks associated with the current weather extremes [9][10].

Group 1 - The core viewpoint of the articles highlights the unusual persistence of high temperatures in Zhejiang province, with historical records being broken for October temperatures due to the strong influence of the subtropical high-pressure system [1][2] - The average temperature in the province from October 3 to October 9 was 29°C, which is 8.2°C higher than the normal for this period, marking the highest historical average for this time [1] - The number of high-temperature days in Hangzhou has reached 68, setting a historical record, and is expected to exceed 70 days after the current heat wave [1] Group 2 - The subtropical high-pressure system is positioned unusually far north at around 30°N, which is causing the abnormal high temperatures, as it typically retreats southward in October [2] - Two cold air masses are expected to arrive next week, with the first weak cold front anticipated to bring some rain and gradually reduce high temperatures in the region [2] - A stronger cold front is expected around October 18, which will likely bring more significant rainfall and lower temperatures, potentially ending the prolonged high-temperature period in Zhejiang [2]

Core Points - The article discusses the significant weather differences between northern and southern China, with northern regions experiencing rainfall and cooling temperatures while southern regions face persistent high temperatures [2][3]. Group 1: Weather Conditions - Northern regions such as Shaanxi, Hebei, Beijing, and others experienced moderate to heavy rainfall, with local areas facing heavy downpours on October 9 [1]. - Southern regions, including Jiangxi, Hunan, and parts of Chongqing, recorded high temperatures ranging from 35 to 38 degrees Celsius [1]. - The Central Meteorological Observatory issued a blue rainstorm warning on October 9, predicting continued rainfall in the northwest, Sichuan Basin, North China, and Huanghuai regions from October 9 to 13 [1]. Group 2: Meteorological Analysis - The weather patterns are influenced by the subtropical high-pressure system, which causes sunny and hot conditions in the southern regions while allowing for rainfall in the northern areas due to active cold air [2]. - The temperature drop in northern regions is significant, with average temperatures 2 to 4 degrees Celsius lower than normal, and some areas experiencing drops of up to 6 degrees Celsius [2]. Group 3: Future Weather Predictions - Rainfall in the northwest, Sichuan Basin, North China, and Huanghuai regions is expected to continue, with the rain bands moving slowly and potentially leading to significant cumulative rainfall [3]. - The cooling effect of cold air in northern regions will diminish, but low temperatures will persist due to ongoing rainfall [3].

Core Points - The recent weather in China shows a significant contrast between the north and south regions, with northern areas experiencing continuous autumn rain and a sharp drop in temperature, while southern regions are still facing high temperatures exceeding 35°C [1][2][3] - The temperature disparity is expected to persist in the coming days, with forecasts indicating rainfall in the northwest, north, and Huanghuai regions, while Jiangnan and parts of southern China will continue to experience high temperatures, with some areas reaching above 38°C [1][2] Weather Conditions - Northern regions, including central and northern China, have experienced heavy rainfall, with forecasts predicting moderate to heavy rain from October 10 to 13, particularly in the Sichuan Basin, northwest, north, and Huanghuai regions [2] - Southern regions, particularly Jiangxi, Zhejiang, Fujian, and parts of Hunan, are expected to maintain high temperatures, with some areas likely to see temperatures above 35°C, and specific regions reaching up to 38°C [2][3] Meteorological Explanation - The weather patterns are influenced by the subtropical high-pressure system, which causes clear and hot conditions in the southern regions while allowing for rainfall in the northern areas due to the interaction of cold air and warm moist air [3] - The recent temperature drop in northern regions is attributed to the strong presence of cold air and the subtropical high-pressure system, resulting in a significant decrease in average temperatures compared to historical norms, with some areas experiencing temperatures 2°C to 4°C lower than usual [3]

Core Points - The recent weather contrast between northern and southern China is significant, with northern regions experiencing continuous autumn rain and temperature drops, while southern regions are enduring high temperatures above 35°C [1][2] - The temperature disparity is expected to persist in the coming days, with forecasts indicating continued rainfall in the northwest, north, and Huanghuai regions, while Jiangnan and southern areas will maintain high temperatures, with some areas reaching above 38°C [1][2] Weather Conditions - Central Meteorological Observatory reported heavy rain in central North China and ongoing high temperatures in Hunan and Jiangxi [2] - From October 10 to 13, areas such as the Sichuan Basin, eastern Northwest China, North China, and Huanghuai are expected to experience moderate to heavy rain, with localized heavy downpours [2] Influencing Factors - The weather patterns are influenced by the subtropical high-pressure system, which causes sunny and hot conditions in the southern regions while allowing for rainfall in areas on its periphery [3][5] - The strong northern cold air combined with the subtropical high-pressure system leads to significant rainfall in the northern regions, while the southern regions remain under the high-pressure system, resulting in sustained high temperatures [5]