中央气象台：华北中南部等地扩散条件将转差

Core Viewpoint - The air quality across various regions in China is experiencing fluctuations, with some areas facing mild to moderate haze, while others are seeing improvements due to cold air influences. Group 1: Air Quality Forecasts - From February 8 to 9, the air diffusion conditions in central and southern North China and the Huanghuai region are generally poor, with light haze and moderate haze in some areas. On February 10, the air diffusion conditions improve slightly due to weak cold air [1][2] - In the Beijing-Tianjin-Hebei region, air diffusion conditions are expected to worsen again from February 11 to 13, but will improve starting February 14 as cold air moves in [2] - The Yangtze River Delta region will benefit from cold air and precipitation, leading to generally good air diffusion and wet removal conditions, although intermittent light haze may occur in northern Jiangsu and Anhui [3] Group 2: Regional Specifics - In the Fenwei Plain, air diffusion conditions are generally average, with light haze expected in southern Shanxi and central Shaanxi during cold air intervals [4] - In Central China, the haze in parts of Hubei and northern Hunan is gradually dissipating, with generally good air diffusion conditions expected, though some areas may still experience intermittent light haze [5] - The Pearl River Delta region is forecasted to have good air diffusion conditions with no significant haze [6] Group 3: Other Regions - The Southwest region will see generally good air diffusion and wet removal conditions, although intermittent light haze may occur in parts of western and southern Sichuan [7] - The Northeast region is expected to have good air diffusion conditions with no persistent haze due to active cold air [8] - In the Northwest region, air diffusion conditions are generally good, but light to moderate haze is expected in the northern Tianshan area starting February 10, along with localized heavy haze and fog during nighttime and early morning [9]