The Arctic Carbon Cycle and Its Response to Changing Climate

Bruhwiler, LoriNational Oceanic and Atmospheric Administration: Earth System Research Laboratory (ESRL) (author)

Purpose of Review: The Arctic has experienced the most rapid change in climate of anywhere on Earth, and these changes are certain to drive changes in the carbon budget of the Arctic as vegetation changes, soils warm, fires become more frequent, and wetlands evolve as permafrost thaws. In this study, we review the extensive evidence for Arctic climate change and effects on the carbon cycle. In addition, we re-evaluate some of the observational evidence for changing Arctic carbon budgets. Recent Findings: Observations suggest a more active CO2 cycle in high northern latitude ecosystems. Evidence points to increased uptake by boreal forests and Arctic ecosystems, as well as increasing respiration, especially in autumn. However, there is currently no strong evidence of increased CH4 emissions. Summary: Long-term observations using both bottom-up (e.g., flux) and top-down (atmospheric abundance) approaches are essential for understanding changing carbon cycle budgets. Consideration of atmospheric transport is critical for interpretation of top-down observations of atmospheric carbon.

Parmentier, Frans Jan W.Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,University of Oslo(Swepub:lu)nate-fpm (author)
Crill, PatrickStockholm University (author)
Leonard, MarkUniversity of Colorado,National Oceanic and Atmospheric Administration: Earth System Research Laboratory (ESRL) (author)
Palmer, Paul I.University of Edinburgh (author)
National Oceanic and Atmospheric Administration: Earth System Research Laboratory (ESRL)MERGE: ModElling the Regional and Global Earth system (creator_code:org_t)

In:Current Climate Change Reports: Springer Science and Business Media LLC7:1, s. 14-342198-6061

By the author/editor: Bruhwiler, Lori; Parmentier, Fran ...; Crill, Patrick; Leonard, Mark; Palmer, Paul I.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Climate Research

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