重点提示: (1)高压东移入海,西南暖湿气团势力加强北上; (2)华北空气污染加重,延续前日北高南低形势;
图1 2015年2月24日全国城市空气质量状况统计(数据来源:环保部数据中心)
天气形势:
24日弱冷高压东移入海,暖湿气团势力加强,北上控制自西南到华北的大片内陆地区,华北华中普遍转偏南风,地表湿度较大,颗粒物吸湿增长易加重雾霾。
图2 2015年02月24日地面天气图(08:00 UTC+8)和污染气象预报图 (图片来源:中央气象台)
预报回顾:
当日矮马全国AQI预报准确,模拟与实测污染中心均出现在京津冀周边地区。上述地区受偏南风影响,区域输送导致污染大量累积,污染程度加重。
图3 2015年02月24日AQI空气质量预报与实况比较(左:矮马预报;右:CNEMC数据平台)
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