Editing Nanjing (section)

===Environmental issues===
[[File:Chinahaze tmo 2013341 lrg.jpg|thumb|December 7, 2013, image from [[NASA]]'s Terra Satellite of the Eastern China smog]]
{{See also|2013 Eastern China smog}}
A dense wave of smog began in the [[Central China|central]] and [[East China|east]] parts of China on December 2, 2013, across a distance of around {{cvt|1200|km|sp=us}},<ref>{{cite web |url=http://earthobservatory.nasa.gov/IOTD/view.php?id=82535 |title=Smog Shrouds Eastern China |publisher=Earth Observatory |date=December 10, 2013 |access-date=March 24, 2014 |archive-url=https://web.archive.org/web/20140324172215/http://earthobservatory.nasa.gov/IOTD/view.php?id=82535 |archive-date=March 24, 2014 |url-status=live }}</ref> including Tianjin, Hebei, Shandong, Jiangsu, Anhui, Shanghai and Zhejiang. A lack of cold air flow, combined with slow-moving [[air mass]]es carrying industrial emissions, collected [[air pollution|airborne pollutants]] to form a thick layer of smog over the region.<ref>{{cite news |title=Smog and fog hit east, north China |url=http://www.china.org.cn/environment/2013-12/06/content_30814209.htm |access-date=May 15, 2014 |agency=Xinhua News Agency |date=December 6, 2013 |archive-url=https://web.archive.org/web/20131206153436/http://china.org.cn/environment/2013-12/06/content_30814209.htm |archive-date=December 6, 2013 |url-status=live }}</ref> The heavy smog heavily polluted central and southern Jiangsu Province, especially in and around Nanjing,<ref name=wylww>{{cite web |url=http://news.qq.com/a/20131205/001551.htm |script-title=zh:我国25个省现雾霾 江苏成污染重灾区全国最严重 |publisher=腾讯转现代快报 |author1=Wu Yi (吴怡) |author2=Liu Wei Wei (刘伟伟) |access-date=March 4, 2014 |archive-url=https://web.archive.org/web/20131212151245/http://news.qq.com/a/20131205/001551.htm |archive-date=December 12, 2013 |url-status=live}}</ref> with its [[air quality index|AQI pollution Index]] at "severely polluted" for five straight days and "heavily polluted" for nine.<ref>{{cite web |url=https://www.chinadialogue.net/article/show/single/en/6632-Environmental-officials-deny-blame-for-eastern-China-smog |title=Environmental officials deny blame for eastern China smog |publisher=China Dialogue |date=January 6, 2014 |access-date=March 24, 2014 |archive-url=https://web.archive.org/web/20140324172728/https://www.chinadialogue.net/article/show/single/en/6632-Environmental-officials-deny-blame-for-eastern-China-smog |archive-date=March 24, 2014 |url-status=live }}</ref> Officials blamed the dense pollution on lack of wind, automobile exhaust emissions under low air pressure, and coal-powered [[district heating]] system in north China.<ref>{{cite web |url=http://news.xinhuanet.com/local/2013-12/07/c_118458506.htm |script-title=zh:三问今冬十面"霾"伏 |script-work=zh:人民日报海外版 |trans-work=People's Daily overseas version |access-date=May 11, 2014 |archive-url=https://web.archive.org/web/20131222103923/http://news.xinhuanet.com/local/2013-12/07/c_118458506.htm |archive-date=December 22, 2013 |url-status=dead}}</ref> Prevailing winds blew low-hanging air masses of factory emissions (mostly [[sulfur dioxide|SO<sub>2</sub>]]) towards China's east coast.<ref>{{cite web |url=http://www.greenpeace.org.uk/newsdesk/energy/data/map-shanghais-charts-air-pollution |title=Map: Shanghai's off the charts air pollution |publisher=Greenpeace |date=December 6, 2013 |access-date=March 24, 2014 |archive-url=https://web.archive.org/web/20140307155938/http://www.greenpeace.org.uk/newsdesk/energy/data/map-shanghais-charts-air-pollution |archive-date=March 7, 2014 |url-status=dead }}</ref>