Effect of heterogeneous atmospheric CO2 on simulated global carbon budget
Global and Planetary Change
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Abstract
The effects of rising atmospheric carbon dioxide (CO2) on terrestrial carbon (C) sequestration have been a key focus in global change studies. As anthropological CO2 emissions substantially increase, the spatial variability of atmospheric CO2 should be considered to reduce the potential bias on C source and sink estimations. In this study, the global spatial–temporal patterns of near surface CO2 concentrations for the period 2003-2009 were established using the SCIAMACHY satellite observations and the GLOBALVIEW-CO2 field observations. With this CO2 data and the Integrated Biosphere Simulator (IBIS), our estimation of the global mean annual NPP and NEP was 0.5% and 7% respectively which differs from the traditional C sequestration assessments. The Amazon, Southeast Asia, and Tropical Africa showed higher C sequestration than the traditional assessment, and the rest of the areas around the world showed slightly lower C sequestration than the traditional assessment. We find that the variability of NEP is less intense under heterogeneous CO2 pattern on a global scale. Further studies of the cause of CO2 variation and the interactions between natural and anthropogenic processes of C sequestration are needed.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effect of heterogeneous atmospheric CO2 on simulated global carbon budget |
| Series title | Global and Planetary Change |
| DOI | 10.1016/j.gloplacha.2012.12.002 |
| Volume | 101 |
| Year Published | 2013 |
| Language | English |
| Publisher | Elsevier |
| Publisher location | Amsterdam, Netherlands |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 19 p. |
| First page | 33 |
| Last page | 51 |
| Google Analytic Metrics | Metrics page |