暴雨大暴雨要来了。 今明两天（9月21日至22日），华西秋雨再度发展，四川、陕西等地部分地区有暴雨，需注意防范连续降雨可能引发的次生灾害。此外，今年第18号台风"桦 加沙"23日将进入南海海域，华南多地再迎强风雨天气，公众请关注临近预报信息，及时做好台风防御措施。 四川陕西等地降雨再起 台风"桦加沙"将影响华南 今年第17号台风"米娜"已于昨晨8时停止编号，但其残涡仍给广东等地带来了强降雨天气，同时四川盆地等地部分地区出现较强降雨，监测显示，昨天8时至 今天6时，广东中部和东部沿海、福建东南部出现暴雨，广东中部等部分地区大暴雨；四川东部、重庆西部、云南西部、贵州西部、广西西部、江西东北部和 南部、浙江南部等地出现大到暴雨，其中浙江温州出现大暴雨或特大暴雨。 今明天，四川盆地至陕西中南部一带的秋雨进一步发展增强，部分地区有暴雨。此外，随着台风"桦加沙"逐渐靠近，明后天华南部分地区将再现强风雨天 气。 具体来看，中央气象台预计，今天，广东中西部、广西东部、福建东北部、江西南部、云南中东部、四川中东部、贵州西部、重庆西南部、甘肃东部、陕西 中南部、河南北部、山西南部、河北南部等地的部分地区有中到大雨，其中，广东中部 ...

Core Viewpoint - The North China rainy season has been notably prolonged this year, lasting 55 days as of August 28, compared to the average of 30 days, influenced by various climatic factors such as sea temperature anomalies and persistent high-pressure systems [1][2][5]. Group 1: Rainy Season Characteristics - The rainy season began on July 5, 13 days earlier than the average start date of July 18, marking the earliest onset since 1961 [2][5]. - Cumulative rainfall in the monitoring area has exceeded the normal seasonal value by 131% as of August 25 [2][3]. - The rainy season has been characterized by high humidity and frequent heavy rainfall events, with 29 significant precipitation events recorded since the onset of the rainy season [3][4]. Group 2: Contributing Factors - Multiple factors contribute to the extended duration of the rainy season, including anomalies in equatorial Pacific sea temperatures, a strong and northward-shifted subtropical high-pressure system, typhoon activity, and geographical features [5][6]. - The subtropical high-pressure system has been particularly strong, reaching its northernmost position since 1961, facilitating the influx of warm, moist air from the south [6][7]. - The interaction between warm, moist air and cold air from higher latitudes has led to increased precipitation in North China [6][7]. Group 3: Climate Change Implications - The record-breaking rainy season is seen as a local manifestation of global climate system changes, with increasing frequency and intensity of extreme weather events attributed to climate change [8]. - Experts suggest that the duration of the rainy season exhibits significant interdecadal variability, with a trend of increasing duration observed since 2011 [7][8]. - There is a call for enhanced disaster prevention and mitigation measures in response to extreme weather, emphasizing the need for societal engagement in climate adaptation strategies [8].

Core Insights - The North China rainy season has been notably prolonged this year, lasting 55 days as of August 28, compared to the average of 30 days, marking the earliest start since 1961 [1][2][4] - The rainy season has been characterized by increased rainfall, with cumulative precipitation exceeding the normal value by 131% as of August 25 [1][2] - Multiple factors contribute to the extended duration and intensity of the rainy season, including abnormal sea surface temperatures in the equatorial Pacific and a strong subtropical high pressure system [4][5][6] Rainfall Characteristics - There have been 29 significant rainfall events since the onset of the rainy season, with 10 classified as strong and 2 as exceptionally strong [2] - Notable rainfall amounts include over 250 mm in certain areas, with specific locations like Beijing's Miyun District recording 573.5 mm and Baoding in Hebei reaching 605.8 mm [2][5] Climate Change Implications - The record-breaking rainy season is seen as a local manifestation of global climate system changes, with increasing frequency and intensity of extreme weather events [6][7] - Experts suggest that the duration of the rainy season may continue to exhibit interdecadal variability, with a trend of increasing duration observed since 2011 [6][7]

Core Viewpoint - The North China rainy season has been notably prolonged this year, lasting 55 days as of August 28, which is significantly longer than the average duration of 30 days, influenced by various climatic factors [1][2][4]. Summary by Relevant Sections Rainy Season Characteristics - The rainy season in North China began on July 5, 13 days earlier than the average start date of July 18, marking the earliest onset since 1961 [2][5]. - As of August 25, the cumulative rainfall in the monitoring area was 131% above the normal seasonal value [2]. Rainfall Events - There have been 29 significant rainfall events since the onset of the rainy season, with 10 classified as strong and 2 as exceptionally strong [3]. - Notable rainfall amounts include over 250 mm in certain areas, with specific locations like Beijing's Miyun District recording 573.5 mm and Baoding in Hebei reaching 605.8 mm [3]. Influencing Factors - The prolonged rainy season is attributed to several factors, including abnormal sea temperatures in the equatorial Pacific, a strong and shifted subtropical high-pressure system, typhoon activity, and geographical features [5][6]. - The subtropical high-pressure system has been particularly strong and has shifted northward, facilitating the influx of warm, moist air from the south [6]. Climate Change Context - The record-breaking rainy season is seen as a local manifestation of global climate change, with increasing frequency and intensity of extreme weather events [7][8]. - Experts suggest that while the rainy season's duration has shown an increasing trend since 2011, it is too early to definitively conclude that this "warming and wetting" trend will continue [7][8].

Core Insights - The article discusses the unusually long and wet rainy season in North China, which began on July 5, 2023, 13 days earlier than the average start date of July 18, marking the earliest onset since 1961 [1][2] - The average rainfall in the North China monitoring area reached 315.5 mm, which is 131% higher than the normal value of 136.6 mm [2] - The record-breaking rainfall is attributed to multiple factors, including abnormal sea temperatures in the equatorial Pacific, a strong and shifted subtropical high-pressure system, typhoon activity, and geographical influences [3][4] Summary by Sections Rainy Season Characteristics - The rainy season in North China has lasted for 52 days as of August 25, significantly longer than the typical duration of 30 days [1] - The rainy season is characterized by increased rainfall frequency, volume, and humidity, contributing to a notably damp environment [2] Factors Contributing to Abnormal Weather - The subtropical high-pressure system has been stronger and positioned further north than usual, facilitating the transport of warm, moist air from lower latitudes to northern China [3] - Historical data indicates that the combination of typhoons and the subtropical high can lead to extreme rainfall events, as seen with Typhoon "Kanu" and Typhoon "Zhu Jie Cao" [3] Climate Change Implications - The record rainfall in North China is viewed as a local manifestation of global climate system changes, emphasizing the need for improved climate adaptation and response capabilities to address extreme weather challenges [4]

Core Viewpoint - Typhoon "Yangliu" is expected to make landfall in Taiwan and then again in the coastal areas of Fujian and Guangdong, bringing heavy rainfall and strong winds to several regions in China [1][3][4] Group 1: Typhoon Path and Impact - Typhoon "Yangliu" is currently classified as a strong typhoon and is moving towards Taiwan at a speed of approximately 30 kilometers per hour [3] - The typhoon is forecasted to make landfall in southeastern Taiwan around noon on August 13, and then re-enter the sea before making a second landfall between Xiamen and Shantou on the night of August 13 to the early morning of August 14 [3][4] - After its second landfall, "Yangliu" will continue to move northwest, gradually weakening in intensity [3][4] Group 2: Wind and Rainfall Forecast - Wind speeds are expected to reach 9-10 levels in southern Taiwan and coastal areas of Fujian, with gusts potentially reaching 13-14 levels near the typhoon's center [4] - Heavy rainfall is anticipated in eastern and southern Guangdong, southern Fujian, and parts of Jiangxi and Hunan, with localized areas experiencing extreme rainfall of 250-300 millimeters [4] - The typhoon will continue to affect regions such as Guangdong, Guangxi, southern Jiangxi, and parts of Hunan and Guizhou, leading to heavy rain or torrential rain in these areas [4] Group 3: Comparison with Previous Typhoons - Unlike Typhoon "Zhu Jie Cao," which significantly influenced northern regions, "Yangliu" is not expected to have a notable impact on northern water vapor transport due to the prevailing subtropical high pressure [6][7] - The frequency of typhoons affecting inland areas and northern regions this year is higher than in previous years, attributed to the unusual behavior of the subtropical high pressure [7]

Group 1 - The core point of the article is the generation of Typhoon "Vansgao," marking the seventh typhoon of the year, with expectations of continued typhoon activity in late July and early August [1] - Meteorological departments predict that the northwest Pacific tropical systems will remain active in late July, with 1 to 2 additional typhoons expected to form [1] - In August, the areas affected by typhoons will primarily be concentrated in East China and South China, with one typhoon expected to impact northern regions [1]