谡 ʾ ް ִ. ÷ Ż ġƿ ؼ ްϰ ϰ 鼭 ֹε ֿ 谡 ٴϱ , ī ɳĿ 600 ̻ ķ óߴ. ֡ 濡 ֹε ū ް ִ. ̷ , ֱ ǰ Ѵٴ ǥǾ ָް ִ.

ֱ (POSTECH) ̱ Ϲб(Harvard University), б(Yale University) м 'ȯ濬(Environmental Research)' , 츮 ǰ ǿ ĥ ִٴ ǥߴ. (O3) ǥ õ ȯ ߴ ȴٰ ˷ ִ. ؽ ް ִ ̱ ĶϾ ָߴ. ĶϾֿ ӵ ֿ ÿ ϴ ִ 31% پ, Ϻ . 2009~2015 ĶϾ Ϻ ִ 8ð ȭߴ. , Ⱓ ƴϾ Ⱓ 1.18ppb Ҵ 巯. Ҿ 11~4(0.79 ppb) 5~10(1.73 ppb) Ѵٴ ǰ ġ ٴ ߰ߴ. "̹ ȣ ȯ ϴ Ųٴ ִ" ߴ. ȯк "̹ ȯ å ȭ ִ ̷ Ѵٴ ûѴ" ߴ.
ĺȭ, η ǰ ĺȭ ϴ ̻ İ ǰ ū ǿ ģٴ ؼ ǥǰ ִ. 7 6 ȸǿ ȯȹ(United Nations Environment Programme, UNEP) ĺȭ ۹ ȭϴ ̶ ǥߴ. ۼ ij б(University of Newcastle upon Tyne) ̺ ̾(David Graham) ڽý Ͼ "ĺȭ µ η ǰ ϴ ۹ ȭ Ȯ Ѵ" ߴ. 2018 ̱ Ż б(Massachusetts Institute of Technology, MIT) м '̱пȸ(Proceedings of the National Academy of Sciences of the United States of America, PNAS)' ĺȭ Űǰ ũ ģٴ ǥߴ. 2002~2012 ̱ 漾(Centers for Disease Control and Prevention, CDC) ̱ 263 , 200 Űǰ 縦 м, ĺȭ µ Ҽ , Ѵٴ ߰ߴ.