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Review of the Draft Second State of the Carbon Cycle Report (SOCCR2) (2018) / Chapter Skim
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Chapter 1: Overview of the Global Carbon Cycle
Pages 25-32

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 25...
... Further editing to clarify and shorten the key findings as well as some of the text would also improve the chapter. There was not always a consistent mention of cement production and inland waters as important sources of carbon emissions to the atmosphere.
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From page 26...
... that shows carbon cycle feedbacks; - a figure or table illustrating Key Finding 3, "uncoupled from economic growth" - a table or figure that show the relative radiative forcings of greenhouse gases (including non-carbon) as per Key Finding 2 -- although the authors may wish to consider whether discussion of radiative forcing is even appropriate for this report, or whether that topic should instead be restricted to the NCA report.
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From page 27...
... • The authors should provide quantitative information. For instance, noting the current fossil fuel carbon emissions and cumulative emissions since pre-industrial would help tie this to Key Finding 5.
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From page 28...
... new global emissions estimates from inland waters and (2) the proportion of cement production emissions contributing to global CO2.
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From page 29...
... P55, Line 33-39 The accounting is not clear as written. North American emissions (from fossil fuel burning and cement production only -- not inland waters?
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From page 30...
... The cumulative ocean sink is best constrained using ocean interior data (DeVries, 2014; Khatiwala et al., 2009; 2013; Sabine et al., 2004; Sabine and Tanhua, 2010) , surface ocean pCO2 data can provide independent confirmation of the magnitude of the mean sink (Landschützer et al., 2013; 2014; 2015; 2016; Takahashi et al., 2009)
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From page 31...
... . These models are quantitatively tied to the estimates from interior ocean data and surface ocean pCO2.
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Key Terms

  • key finding
  • ocean sink
  • global carbon
  • key findings
  • fossil fuel

  • radiative forcing
  • inland waters
  • carbon emissions
  • cement production
  • time frames

  • surface ocean
  • future ocean
  • cumulative emissions
  • substantial uncertainty
  • anthropogenic carbon

  • natural carbon
  • cumulative carbon
  • echo key
  • outgas carbon
  • carbon content

  • illustrating key
  • slow carbon
  • carbon cycles
  • ocean sinks
  • cycle feedbacks

  • ocean data
  • upper ocean
  • emissions contribution
  • ocean circulation
  • radiative forcings


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