北京2008污染曲线

前几天在办公室,有同事打开窗户说透透气,一下就感觉不对,让同事关窗户,他们一脸诧异,不明白我为啥突然这样,问他们难道没觉得有啥问题,他们摇摇头,一副莫名其妙的表情看着我。空气那么难闻,肯定污染很厉害,他们没感觉,只好跑环保部的网站去查污染指数,一看超过250的API指数,然后google了一下空气质量的标准,“空气污染指数为201-300,空气质量级别为IV(1)级和IV(2)级,空气质量状况属于中度和中度重污染。此时,每个人的健康都会受到比较严重的影响“。同事们将信将疑的信了,虽然还是对我对空气的敏感保持怀疑。。。
昨天有同事在傍晚的时候说今天空气真好,透过窗户,可以清晰的看到远处山脊线,空气透视非常好,大家估计昨天污染指数肯定非常低,30左右,啊,这就和美国西海岸城市的空气指数差不多了。。。
今天说到这个问题,查了一下,果然没到30的污染指数,北京这样的天气可不多。索性把去年2008年全年的污染指数检索出来,在excel里面作了一个分析,看看北京一年里头污染指数到底是怎样的。拿到数据还是吓了一跳,居然有4天的污染指数是超过300的,有一天甚至高达460,这太可怕了。460的污染指数,那岂不是相当于我们人人都在汽车尾气排放口呼吸?
beijing2008API.jpg
2008全年污染指数曲线
beijing2008API_per.jpg
2008年全年污染程度百分比
其中,污染指数超过300的有8天,超过100的有96天,超过50的是305天,只有62天的空气质量是低于50的优。全年有93天是属于有污染的天气,有10天的首要污染物是二氧化硫,有295天的首要污染物是可吸入颗粒物,只有62天空气里没有首要污染物。这个是按照环保部的标准。
环保部数据中心
重点城市空气质量日报

三更天 发表于 2009-4-1 96 views | 类别: 尚未分类

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