thumbnail

An analysis of the carbon balance of the Arctic Basin from 1997 to 2006

Tellus, Series B: Chemical and Physical Meteorology

By:
, , , , , , , , , , ,
DOI: 10.1111/j.1600-0889.2010.00497.x

Links

Abstract

This study used several model-based tools to analyse the dynamics of the Arctic Basin between 1997 and 2006 as a linked system of land-ocean-atmosphere C exchange. The analysis estimates that terrestrial areas of the Arctic Basin lost 62.9 Tg C yr-1 and that the Arctic Ocean gained 94.1 Tg C yr-1. Arctic lands and oceans were a net CO2 sink of 108.9 Tg C yr-1, which is within the range of uncertainty in estimates from atmospheric inversions. Although both lands and oceans of the Arctic were estimated to be CO2 sinks, the land sink diminished in strength because of increased fire disturbance compared to previous decades, while the ocean sink increased in strength because of increased biological pump activity associated with reduced sea ice cover. Terrestrial areas of the Arctic were a net source of 41.5 Tg CH4 yr-1 that increased by 0.6 Tg CH4 yr-1 during the decade of analysis, a magnitude that is comparable with an atmospheric inversion of CH4. Because the radiative forcing of the estimated CH4 emissions is much greater than the CO2 sink, the analysis suggests that the Arctic Basin is a substantial net source of green house gas forcing to the climate system. ?? 2010 The Authors Tellus B ?? 2010 International Meteorological Institute in Stockholm.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
An analysis of the carbon balance of the Arctic Basin from 1997 to 2006
Series title:
Tellus, Series B: Chemical and Physical Meteorology
DOI:
10.1111/j.1600-0889.2010.00497.x
Volume
62
Issue:
5
Year Published:
2010
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
455
Last page:
474
Number of Pages:
20