The contemporary and historical budget of atmospheric CO2

被引：6
作者：
Huang, Junling [1 ]
McElroy, Michael B. [1 ,2 ]
机构：
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
[2] Harvard Univ, Dept Earth & Planetary Sci, Cambridge, MA 02138 USA
来源：
CANADIAN JOURNAL OF PHYSICS | 2012年 / 90卷 / 08期
基金：
美国国家科学基金会;
关键词：
CARBON-DIOXIDE EMISSIONS; VARIABILITY; SINKS; O-2; SF6;
D O I：
10.1139/p2012-033
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Observations of CO2 and O-2 are interpreted to develop an understanding of the changes in the abundance of atmospheric CO2 that have arisen over the period 1995-2007. Fossil fuels accounted for an addition of 89.3 Gt of carbon to the atmosphere over this time period, 29% of which was transferred to the ocean, 15% to the global biosphere, with the balance (57%) retained by the atmosphere. Analysis of historical data for CO2 derived from studies of gases trapped in ice at Law Dome in Antarctica indicate that the biosphere represented a net source of atmospheric CO2 prior to 1940, switching subsequently to a net sink.
引用
收藏
页码：707 / 716
页数：10
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