Climate Change Science: Key Points

Leggett, Jane A.

Library of Congress. Congressional Research Service.

关键词: Air pollution;    Environmental protection;    Environmental research;    Global climate change;    Global warming;   

RP-ID  :  R43229
RP-ID  :  R43229_2013Sep10

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report discusses the climate change science, that though often is portrayed as controversial there is a broad scientific agreement over many points. The report provides data on long-term temperature observations, estimate of human-related versus solar contributions to global temperature change over the 20th century, estimated top 20 emitting nations of greenhouse gases in 2010, and sea ice extent in Arctic (September) and Antarctica (April), 1979 to 2012