央视网丨气温预报“人工压数值”？气象学家回应

Core Viewpoint - The article discusses the increasing frequency and intensity of extreme weather events in China, including record high temperatures and heavy rainfall, attributed to climate change and the behavior of the subtropical high-pressure system [1][5][9]. Group 1: Extreme Weather Trends - China has experienced the hottest June on record, with extreme heat and heavy rainfall occurring simultaneously in different regions [1]. - The National Climate Center reports a general increase in extreme heat records and rainfall intensity across most regions in China over the past few decades [1][5]. - The average annual warm days in China have increased by approximately 6.7 days every decade, indicating a lengthening of the warm season [5]. Group 2: Climate Change Impacts - The article highlights that global warming is a significant factor contributing to the observed warming and increased humidity in northern China [5][9]. - The average relative humidity in Beijing has risen by 5% from 2013-2022 compared to 2003-2012, indicating a trend towards a warmer and more humid climate [3][4]. - The subtropical high-pressure system's behavior has changed, leading to earlier and more intense heat waves in northern regions [7][8]. Group 3: Weather Forecasting Challenges - There is a discrepancy between reported temperatures and public perception due to differences in measurement standards and personal experiences of weather [2]. - Future weather forecasts may increasingly focus on "feels-like" temperatures rather than just air temperature, addressing public concerns more effectively [2]. Group 4: Regional Weather Patterns - The article describes how the subtropical high-pressure system influences weather patterns, causing drought in some areas while leading to heavy rainfall in others, creating a "drought in a large area, flood in a narrow line" phenomenon [6][10]. - The intensity and frequency of localized extreme rainfall events are increasing, with significant implications for flood management and infrastructure [10][11]. Group 5: Adaptation and Preparedness - The article emphasizes the need for improved disaster preparedness and water resource management in light of increasing extreme weather events [12]. - It suggests that alongside disaster mitigation, there should be a focus on utilizing rainfall during flood seasons for water conservation in drier months [12].