Drought rapidly diminishes the large net CO<inf>2</inf> uptake in 2011 over semi-arid Australia

Ma, X; Huete, A; Cleverly, J; Eamus, D; Chevallier, F; Joiner, J; Poulter, B; Zhang, Y; Guanter, L; Meyer, W; Xie, Z; Ponce-Campos, G

Drought rapidly diminishes the large net CO<inf>2</inf> uptake in 2011 over semi-arid Australia

Ma, X

Huete, A

Cleverly, J

Eamus, D

Chevallier, F Joiner, J Poulter, B Zhang, Y Guanter, L Meyer, W Xie, Z

Ponce-Campos, G

Permalink

Publication Type:: Journal Article
Citation:: Scientific Reports, 2016, 6
Issue Date:: 2016-11-25

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Published VersionAdobe PDF (9.05 MB)

Adobe PDF

Download Accepted Manuscript VersionAdobe PDF (536.5 kB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Ma, X https://orcid.org/0000-0003-1499-8476	en_US
dc.contributor.author	Huete, A https://orcid.org/0000-0003-2809-2376	en_US
dc.contributor.author	Cleverly, J https://orcid.org/0000-0002-2731-7150	en_US
dc.contributor.author	Eamus, D https://orcid.org/0000-0003-2765-8040	en_US
dc.contributor.author	Chevallier, F	en_US
dc.contributor.author	Joiner, J	en_US
dc.contributor.author	Poulter, B	en_US
dc.contributor.author	Zhang, Y	en_US
dc.contributor.author	Guanter, L	en_US
dc.contributor.author	Meyer, W	en_US
dc.contributor.author	Xie, Z https://orcid.org/0000-0002-4327-420X	en_US
dc.contributor.author	Ponce-Campos, G	en_US
dc.date.available	2016-11-01	en_US
dc.date.issued	2016-11-25	en_US
dc.identifier.citation	Scientific Reports, 2016, 6	en_US
dc.identifier.uri	http://hdl.handle.net/10453/63934
dc.description.abstract	© The Author(s) 2016. Each year, terrestrial ecosystems absorb more than a quarter of the anthropogenic carbon emissions, termed as land carbon sink. An exceptionally large land carbon sink anomaly was recorded in 2011, of which more than half was attributed to Australia. However, the persistence and spatially attribution of this carbon sink remain largely unknown. Here we conducted an observation-based study to characterize the Australian land carbon sink through the novel coupling of satellite retrievals of atmospheric CO2 and photosynthesis and in-situ flux tower measures. We show the 2010-11 carbon sink was primarily ascribed to savannas and grasslands. When all biomes were normalized by rainfall, shrublands however, were most efficient in absorbing carbon. We found the 2010-11 net CO2 uptake was highly transient with rapid dissipation through drought. The size of the 2010-11 carbon sink over Australia (0.97 Pg) was reduced to 0.48 Pg in 2011-12, and was nearly eliminated in 2012-13 (0.08 Pg). We further report evidence of an earlier 2000-01 large net CO2 uptake, demonstrating a repetitive nature of this land carbon sink. Given a significant increasing trend in extreme wet year precipitation over Australia, we suggest that carbon sink episodes will exert greater future impacts on global carbon cycle.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP140102698
dc.relation	http://purl.org/au-research/grants/arc/
dc.relation.ispartof	Scientific Reports	en_US
dc.relation.isbasedon	10.1038/srep37747	en_US
dc.title	Drought rapidly diminishes the large net CO<inf>2</inf> uptake in 2011 over semi-arid Australia	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.for	0501 Ecological Applications	en_US
utslib.for	050206 Environmental Monitoring	en_US
utslib.for	090905 Photogrammetry and Remote Sensing	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	6	en_US

Abstract:

© The Author(s) 2016. Each year, terrestrial ecosystems absorb more than a quarter of the anthropogenic carbon emissions, termed as land carbon sink. An exceptionally large land carbon sink anomaly was recorded in 2011, of which more than half was attributed to Australia. However, the persistence and spatially attribution of this carbon sink remain largely unknown. Here we conducted an observation-based study to characterize the Australian land carbon sink through the novel coupling of satellite retrievals of atmospheric CO2 and photosynthesis and in-situ flux tower measures. We show the 2010-11 carbon sink was primarily ascribed to savannas and grasslands. When all biomes were normalized by rainfall, shrublands however, were most efficient in absorbing carbon. We found the 2010-11 net CO2 uptake was highly transient with rapid dissipation through drought. The size of the 2010-11 carbon sink over Australia (0.97 Pg) was reduced to 0.48 Pg in 2011-12, and was nearly eliminated in 2012-13 (0.08 Pg). We further report evidence of an earlier 2000-01 large net CO2 uptake, demonstrating a repetitive nature of this land carbon sink. Given a significant increasing trend in extreme wet year precipitation over Australia, we suggest that carbon sink episodes will exert greater future impacts on global carbon cycle.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/63934