[OANNES Foro] Future high carbon dioxide (CO2) concentrations in sea-water driven by anthropogenic amplification of the natural CO2 cycle

[Mario Cabrejos]

Nature 529, 383-386

(21 January 2016)

doi:10.1038/nature16156

Published online 20 January 2016

http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html?WT.ec_
id=NATURE-20160121
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html?WT.ec
_id=NATURE-20160121&spMailingID=50507456&spUserID=MjA1NTE2ODQxMAS2&spJobID=8
42660933&spReportId=ODQyNjYwOTMzS0>
&spMailingID=50507456&spUserID=MjA1NTE2ODQxMAS2&spJobID=842660933&spReportId
=ODQyNjYwOTMzS0

 

Future ocean hypercapnia driven by anthropogenic amplification of the
natural CO2 cycle

 
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html?WT.ec
_id=NATURE-20160121&spMailingID=50507456&spUserID=MjA1NTE2ODQxMAS2&spJobID=8
42660933&spReportId=ODQyNjYwOTMzS0#auth-1> Ben I. McNeil &
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html?WT.ec
_id=NATURE-20160121&spMailingID=50507456&spUserID=MjA1NTE2ODQxMAS2&spJobID=8
42660933&spReportId=ODQyNjYwOTMzS0#auth-2> Tristan P. Sasse

 

High carbon dioxide (CO2) concentrations in sea-water (ocean hypercapnia)
can induce neurological, physiological and behavioural deficiencies in
marine animals
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref1>
1,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref2>
2,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref3>
3,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref4>
4,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref5>
5,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref6>
6,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref7>
7,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref8>
8,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref9>
9,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref10
> 10. Prediction of the onset and evolution of hypercapnia in the ocean
requires a good understanding of annual variations in oceanic CO2
concentration, but there is a lack of relevant global observational data.
Here we identify global ocean patterns of monthly variability in carbon
concentration using observations that allow us to examine the evolution of
surface-ocean CO2 levels over the entire annual cycle under increasing
atmospheric CO2 concentrations. We predict that the present-day amplitude of
the natural oscillations in oceanic CO2 concentration will be amplified by
up to tenfold in some regions by 2100, if atmospheric CO2 concentrations
continue to rise throughout this century (according to the RCP8.5 scenario
of the Intergovernmental Panel on Climate Change)
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref11
> 11. The findings from our data are broadly consistent with projections
from Earth system climate models
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref12
> 12,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref13
> 13,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref14
> 14,
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref15
> 15. Our predicted amplification of the annual CO2 cycle displays distinct
global patterns that may expose major fisheries in the Southern, Pacific and
North Atlantic oceans to hypercapnia many decades earlier than is expected
from average atmospheric CO2 concentrations. We suggest that these ocean
'CO2 hotspots' evolve as a combination of the strong seasonal dynamics of
CO2 concentration and the long-term effective storage of anthropogenic CO2
in the oceans that lowers the buffer capacity in these regions, causing a
nonlinear amplification of CO2concentration over the annual cycle. The onset
of ocean hypercapnia (when the partial pressure of CO2 in sea-water exceeds
1,000 micro-atmospheres) is forecast for atmospheric CO2concentrations that
exceed 650 parts per million, with hypercapnia expected in up to half the
surface ocean by 2100, assuming a high-emissions scenario (RCP8.5)
<http://www.nature.com/nature/journal/v529/n7586/full/nature16156.html#ref11
> 11. Such extensive ocean hypercapnia has detrimental implications for
fisheries during the twenty-first century.

 



---
This email is free from viruses and malware because avast! Antivirus protection is active.
https://www.avast.com/antivirus
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://lista.oannes.org.pe/pipermail/oannes-oannes.org.pe/attachments/20160206/573b14a7/attachment.htm>