| 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. |
| Genre: | Article |
| ProdID: | 70043284 |
| Citation Author: | Zhang, Zhen; Jiang, Hong; Liu, Jinxun; Ju, Weimin; Zhang, Xiuying |
| Citation Contributing Office: | Earth Resources Observation and Science (EROS) Center |
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| Citation End Page: | 51 |
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| Citation Language: | English |
| Citation Larger Work Title: | Global and Planetary Change |
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| Citation Phsyical Description: | 19 p. |
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| Citation Publisher: | Elsevier |
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| Citation Search Results Text: | Effect of heterogeneousatmospheric CO2 on simulated global carbon budget; 2013; Article; Journal; Global and Planetary Change; Zhang, Zhen; Jiang, Hong; Liu, Jinxun; Ju, Weimin; Zhang, Xiuying |
| Citation Start Page: | 33 |
| Citation Volume: | 101 |
| Citation Year: | 2013 |
| Type: | citation/reference |
| Text: | Effect of heterogeneousatmospheric CO2 on simulated global carbon budget; 2013; Article; Journal; Global and Planetary Change; Zhang, Zhen; Jiang, Hong; Liu, Jinxun; Ju, Weimin; Zhang, Xiuying |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.gloplacha.2012.12.002 |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 10 Feb 2013 00:00 -0600 |
| Publisher: | Elsevier |
