Core Viewpoint - The recent cold wave has significantly impacted Suzhou's weather, leading to a sharp drop in temperatures, with the city experiencing challenges in officially entering winter despite previous cold fronts [1] Weather Conditions - Suzhou has faced two previous cold waves this winter, both of which were intense but short-lived, resulting in quick temperature rebounds after their passage [1] - The latest weather forecast indicates that aside from a rain event on the night of the 20th to the day of the 21st, the week will primarily feature changes in cloud cover [1] - The lowest temperature recorded was around 0°C on the morning of the 15th, attributed to the influence of cold air and clear night skies [1] Temperature Trends - Following the recent cold air mass, temperatures in Suzhou are expected to gradually rise, with maximum temperatures projected to exceed 10°C in the short term [1] - The city is still monitoring whether the average temperature can remain below 10°C for five consecutive days, which is a criterion for officially marking the onset of winter [1]

Group 1 - The core viewpoint of the article highlights the fluctuating weather conditions in Suzhou, with a warm spell experienced over the weekend, where the maximum temperature rose above 22°C [1] - The article mentions that the upcoming week will see mostly cloudy conditions, with weak precipitation expected on the night of December 2, followed by a significant drop in temperature due to cold air influence [1] - It is noted that the minimum temperature is expected to reach between 0°C and -1°C on the morning of December 4, indicating a notable temperature drop [1] Group 2 - The article indicates that the precipitation in Suzhou for early December is expected to be significantly below the average for this time of year, with the average temperature for the period being close to the historical norm [1] - The recent cold air patterns have caused temperature fluctuations, but the city has not yet met the winter standard of a continuous 5-day sliding average temperature below 10°C [1]

Core Viewpoint - The article discusses the impact of a strong cold air mass sweeping across China, leading to concerns about the upcoming winter temperatures and the characteristics of seasonal temperature fluctuations in the context of global warming [1][3]. Group 1: Winter Temperature Predictions - The National Climate Center predicts that this winter, temperatures in China will be close to or slightly warmer than the historical average, but with significant fluctuations between cold and warm periods [1][3]. - The warming trend in winter temperatures is evident, with the Arctic experiencing a more pronounced temperature increase compared to tropical and subtropical regions, leading to more extreme temperature variations in China [3]. Group 2: Seasonal Changes - The transition from autumn to winter is typically rapid in many regions of China, contributing to the perception that autumn is shorter [4][7]. - Statistical data indicates that autumn has indeed shortened in many cities, particularly in eastern regions, with cities like Hefei, Guangzhou, and Nanning experiencing a reduction of over 10 days in autumn length compared to historical data [9]. Group 3: Overall Seasonal Length Trends - Despite the perception of a longer winter, most regions in China are experiencing a shortening of winter length due to climate change, with a slight delay in the onset of winter and an earlier arrival of spring [11].

Core Points - A strong cold air mass is expected to impact China from October 16 to 21, leading to the lowest temperatures of the second half of the year in most regions [1][3] - Beijing is forecasted to experience a significant drop in temperature, with nighttime temperatures falling to single digits starting from October 17, and potentially reaching around 2°C on the night of October 19 [1][3] - This cold air mass is considered the strongest of the second half of the year, with a prolonged impact and significant temperature drops [5] Summary by Sections Weather Forecast - The cold air mass is expected to lead to continuous average daily temperatures below 10°C in Beijing from October 18 to 24, indicating an early onset of winter [3] - The average winter onset date for Beijing is typically October 31, based on historical data from 1991 to 2020 [3] Temperature Impact - Northern regions will experience persistently low temperatures, with areas like North China and eastern Huanghuai expected to have average temperatures below 10°C for five consecutive days starting October 18 [5] - Initial frost is anticipated in northern China, including regions like Liaoning [5] Weather Warnings - Beijing's meteorological authority has issued blue alerts for cold waves and strong winds, warning of temperature drops of around 8°C and nighttime lows of about 4°C in plain areas [5] - Frost warnings have been issued for several districts, indicating potential agricultural impacts due to low temperatures [5] Health Advisory - The Beijing Center for Disease Control advises the public to take precautions against the cold, including wearing appropriate clothing and maintaining good hygiene practices to prevent respiratory illnesses during the flu season [6]

Core Points - A strong cold air mass is affecting China from October 16 to 21, leading to the lowest temperatures of the second half of the year in most regions [1][2] - Beijing is expected to experience a significant drop in temperature, with nighttime temperatures falling to single digits starting from October 17, and potentially reaching around 2°C on the night of October 19 [1][2] - The cold air mass is described as the strongest of the second half of the year, with a long duration and significant temperature drop [2] Summary by Sections Weather Impact - The cold air mass will result in continuous average temperatures below 10°C in Beijing from October 18 to 24, indicating an early onset of winter compared to the average date of October 31 [1] - Northern regions, including parts of North China and Liaoning, are expected to experience initial frost, while southern regions will see a temperature drop of 2°C to 4°C after previously being 5°C to 8°C above normal [2] Warnings and Precautions - Beijing's meteorological authorities have issued blue alerts for cold waves and strong winds, predicting a temperature drop of around 8°C and wind gusts reaching up to 7 levels in certain districts [2] - Frost warnings have been issued for specific districts, indicating potential impacts on agriculture due to low temperatures [2] Health Advisory - The Beijing Center for Disease Control advises the public to take precautions against the cold, including wearing appropriate clothing and protecting vulnerable body parts [3] - Emphasis is placed on the importance of flu vaccinations and maintaining good hygiene practices during the autumn and winter seasons, which are high-risk periods for respiratory diseases [3]