Download PDF by Anna M Michalak, Robert B Jackson, Gregg Marland: A U.S. Carbon Cycle Science Plan

By Anna M Michalak, Robert B Jackson, Gregg Marland

Realizing of the Earth’s carbon cycle is an pressing societal desire in addition to a hard highbrow challenge. The affects of human-caused alterations at the worldwide carbon cycle might be felt for hundreds and hundreds to hundreds of thousands of years. Direct observations of carbon shares and flows, process-based knowing, info synthesis, and cautious modeling are had to verify how the carbon cycle is being changed, what the implications are of those alterations, and the way top to mitigate and adapt to adjustments within the carbon cycle and weather. the significance of the carbon cycle is accentuated by way of its complicated interaction with different geochemical cycles (such as nitrogen and water), its severe position in fiscal and different human structures, and the worldwide scale of its interactions.

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Moreover, understanding these effects is critical to identifying potential feedbacks and thresholds in the interactions among ecosystems, climate, and atmospheric chemistry. 2 Progress over the last decade 1020 1021 1022 1023 1024 1025 1026 1027 Over the past decade, we have come to a better understanding of the profound ecosystem changes that have occurred with changing greenhouse gas concentrations and other climate-related forcings. , 2007, Field et al. 2007). , 2008). , 2007). , 2009). , Riebesell, 2008).

3 Major uncertainties 923 924 925 926 927 928 929 930 931 Uncertainties associated with changes to vulnerable carbon stocks and flows are still large (Schimel et al. , 2006). Given that approximately half of the carbon released through fossil fuel burning is currently taken up by sinks on land and in the ocean, predicting the future carbon balance of these major reservoirs is critically important. There are major gaps in our understanding of how the carbon cycle responds to climate change. Important processes are affected differently by changes occurring over diverse time scales, such as short-term climate disturbance versus long-term climate change.

S. Forest Service). , Sarmiento and Wofsy, 1999; SOCCR 2007), current circumstances provide a unique opportunity for fulfilling this goal. Both carbon cycle scientists and decision makers are coming to recognize that decision support is an on-going dialogue and not an intermitted push or pull of information and research results. 3 Major uncertainties 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 Given the societal importance of decarbonizing the economy and preserving terrestrial carbon stores, there are many decision-making contexts that should be informed by carbon science at appropriate scales.

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A U.S. Carbon Cycle Science Plan by Anna M Michalak, Robert B Jackson, Gregg Marland


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