随着历史极端高温在29日大面积地出现在京津冀及黄淮地区,又一次大范围的臭氧污染业已形成。矮马预报的估算是这次以臭氧为特征的空气污染过程将持续到6月2日随着气温回落而结束。污染范围与上次大体相当,北至河北北部,南至江浙。污染程度以轻度到中度为主,重度污染出现的概率稍小。
矮马预报的气象预报同时预测北京在29日、30日、31日、1日和2日的最高气温分别为40、38、41、39 和33摄氏度。29日的气温观测值已经证实北京当日最高气温突破40摄氏度。
然而,29日的重点城市实时日报显示,矮马预报低估了京津冀地区的臭氧污染,另外山东个别城市实测到臭氧严重污染。让我继续跟踪这次污染的实测走势。
30日的实时日报显示污染继续,且强度略有加大。另外,与昨日明显的差别是南方城市开始表现出更多地以PM2.5为首要污染物,且出现多个城市的PM2.5重度污染。而与此对应的是北方相比昨日出现更多的重度污染城市,但仍然保持主要以臭氧为首要污染物。
和矮马预报一致,5月31日重点城市AQI日报显示污染北移,并深入东北地区。
至六月1日,此次大范围污染基本结束。
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