Lose sight of blue sky, be air quality difference?_News

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If you pay close attention to all the time

Air quality

With respect to meeting discovery

Sincerity is pretty good

Be being connected is " fine "

Lose sight of blue sky, be air quality difference?

Believe

Also have many people the meeting is interrogative

Look at the day is dusky obviously

Air quality can be how " good "

Actually

"Blue sky " not be to see color really

After all how appearance judgement

The stand or fall of air quality

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Empty temperament measures an index, call AQI again, it is the abbreviation of Air Quality Index, began to carry out on January 1, 2013 according to our country " standard of ambient air quality " (GB3095-2012) , the air pollution content that shares an evaluation is 2 oxidation sulfur (SO2) , 2 oxidation nitrogen (NO2) , carbon monoxide (CO) , ozone (O3) , but inspiratory grain content (PM10) , fine grained content (PM2.5) 6, describe air quality condition with ration of air quality index.

Do you know?

Air quality index (AQI) cent is 6 grade, AQI value is less than be equal to 50, explain air quality is actor; AQI value is more than 50 and be less than be equal to 100, make clear air quality good people. Specific ↓ of the ↓ that be like ↓

Air quality index is 0 - 50 (one class actors or actress)

Air quality scale is one class, air quality state belongs to actor. Of all kinds crowd but normal activity.

Air quality index is 51 - 100 (2 class good people)

Air quality scale is 2 class, air quality state belongs to fine. The proposal seldom counts unusually sensitive crowd to should reduce outdoors activity.

Air quality index is 101 - 150 (3 class spend pollution gently)

Air quality scale is 3 class, quality state belongs to air to spend pollution gently. Proposal children, what patient of disease of old people and heart disease, respiratory system should reduce long, high strength is outdoors take exercise.

Air quality index is 151 - 200 (pollution is spent in 4 class)

Air quality scale is 4 class, air pledges pollution is spent in measuring a state to belong to. Proposal disease patient prevents the outdoors exercise of long, high strenth, average crowd is right amount reduce outdoors motion.

Air quality index is 201 - 300 (5 class spend pollution again)

Air quality scale is 5 class, quality state belongs to air to spend pollution again. Proposal children, old people and heart disease, consumptive should stay indoors, suspend outdoors campaign, average crowd reduces outdoors motion.

Air quality index is more than 300 (6 class are polluted badly)

Air quality scale is 6 class, air quality state belongs to serious pollution. Proposal children, old people and patient ought to stay indoors, avoid physical strength to use up, average crowd should avoid outdoors activity.

From the point of the data that monitor, when white cloud of celestial blue sky, especially when summer, visibility is very good, an index exceeds Dan Mou mark, air quality also may appear contaminative phenomenon.

From the point of the factor that affects visibility, low visibility phenomenon includes mist, haze, sanded dust storm, Yang Sha, floating dust to wait, before two kinds are abound the weather appearance that cause by lunt, from the back a few kinds are the weather appearance that causes by grain content.

From monitor actually in light of, density of all sorts of air pollution content are very low when reaching super grade, if lunt is not Chang Fengfu, adjacent 100% when with respect to meeting occurrence mist, expression is a sky hazy, visibility also but low to 1 kilometer the following.

That is to say

Spatio-temporal air quality shows admirable

People naked eye sees the phenomenon of dusky however

That is not empty temperamental quantitative change to differ

It is the lunt in air likely too sufficient bring about