航海业二氧化碳排放占全球总量的3.5%-Ship CO2 emissions at 3.5 pct of global total

[摘要] 2007年世界航海业的总排放达到11.2亿吨二氧化碳当量，大约全球总排放的3.5%,(another source claims 4.5 percent) 。根据国际海运组织IMO的最新报告。如果持续增长，国际海运在2020之前会增加30%，达到14.75亿吨二氧化碳当量。

不过海运这个比例的排放倒挺令人吃惊，因为之前IPCC就警告说海运的排放量会远高于航空。2002年航空总排放是4.92亿吨，2005年约7亿吨，约占总排放的 1.6-2%。外加非二氧化碳效应，航空业排放大概占全球的总排放要增加3-5倍,到2050年会达到全球总排放的5%。

目前，虽然航海和航空的排放增长很快，但是还没有并入到 京都议定书 下，因为把这些排放归类的每个国家的复杂性。

LONDON (Reuters) - Annual carbon dioxide emissions from world shipping reached 1.12 billion tonnes in 2007, about 3.5 percent of total global carbon emissions, a scientific report by the world's top maritime body shows. The report also showed that growing international seaborne trade and related fuel consumption will raise carbon dioxide (CO2) emissions from ships by 30 percent to 1.475 billion tonnes by 2020.

Shipping and aviation emissions are rising rapidly but are not accounted for in the international Kyoto Protocol on global warming, because of the complexity of attributing these emissions to individual states. The U.N.'s Intergovernmental Panel on Climate Change(IPCC) last year said aviation CO2 emissions in 2002 were 492 million tonnes, far less than the IMO estimate of ship emissions even though the airline industry has come under far more scrutiny.

The new study by a group of experts was finalized by the U.N. International Maritime Organisation (IMO) in late December but only distributed to countries party to IMO regulations who met to set new pollution regulations last week.

来源 Source 路透社 Reuters