When you look at that graph, and, indeed, today's, you'll notice that the peak moments coincide with low wind speeds. Winds are very strong in spring afternoons and I believe they blow a lot of the pollution away. When the wind dies down at night, the air fills up with pollution again. From diesel trucks, certainly, but construction, too. And agricultural stalk burning.
What puzzles me is that the humidity, which reaches 100% at night, doesn't precipitate the pollution. I thought it should?
Anyway, high AQI rates are common for Kunming in spring. But that doesn't mean it isn't utterly disgusting. We should all be aware that we're slowly being killed here.
Setting up an international dental clinic in Kunming
发布者Where's my april fool's article!
Highway promises easier access to Meili Snow Mountain
发布者cyled it. The road is at phenomenal altitude (some stretches as high as 4400masl), that probably had something to do with it the slowness :)
Kunming driver boldly goes where few have before
发布者I.e. one of the men was driving and they blamed the woman.
Yunnan to spend 500 billion on roads
发布者sounds like a desperate attempt to boost the economy rather than fulfilling a really necessary need. Yunnan's roads are not of such poor quality. Well let's hope it works, whichever the target.
200 Kunming officials punished for corruption
发布者She is raging like a devil in a font of holy water.