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Partitioning the variance between space and time

Sun, Fubao; Roderick, Michael; Lim, Wee Ho; Zhang , Yongqiang; Bennett, Neil; Roxburgh , Stephen H; Farquhar, Graham

Description

Here we decompose the space-time variance of near-surface air temperature using monthly observations for the global land surface (excluding Antarctica) from 1901-2000. To do that, we developed a new method for partitioning the total space-time variance, here called the grand variance, into separate spatial and temporal components. The temporal component is, in turn, further partitioned into the variance relating to different time periods and we use monthly data to decompose intra- and...[Show more]

dc.contributor.authorSun, Fubao
dc.contributor.authorRoderick, Michael
dc.contributor.authorLim, Wee Ho
dc.contributor.authorZhang , Yongqiang
dc.contributor.authorBennett, Neil
dc.contributor.authorRoxburgh , Stephen H
dc.contributor.authorFarquhar, Graham
dc.date.accessioned2015-12-07T22:32:50Z
dc.identifier.issn0094-8276
dc.identifier.urihttp://hdl.handle.net/1885/22986
dc.description.abstractHere we decompose the space-time variance of near-surface air temperature using monthly observations for the global land surface (excluding Antarctica) from 1901-2000. To do that, we developed a new method for partitioning the total space-time variance, here called the grand variance, into separate spatial and temporal components. The temporal component is, in turn, further partitioned into the variance relating to different time periods and we use monthly data to decompose intra- and inter-annual components of the variance. The results show that the spatial and temporal components of the variance of near-surface air temperature have both, on average, decreased over time primarily because of reductions in the equator-to-pole (northern) temperature gradient, and because in cold regions, winter is generally warming faster than summer. We also found that in most regions, the inter-annual variance in near-surface air temperature has increased.
dc.publisherAmerican Geophysical Union
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0094-8276/..."Publisher's version/PDF must be used in Institutional Repository 6 months after publication" from SHERPA/RoMEO site (as at 18/10/16).
dc.sourceGeophysical Research Letters
dc.subjectKeywords: Antarctica; Cold regions; Global land surface; Interannual; Near surface air temperature; Space and time; Temperature gradient; Time periods; Atmospheric temperature; Atmospheric thermodynamics; air temperature; global perspective; land surface; seasonal
dc.titlePartitioning the variance between space and time
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume37
dc.date.issued2010
local.identifier.absfor040104 - Climate Change Processes
local.identifier.ariespublicationu4956746xPUB24
local.type.statusPublished Version
local.contributor.affiliationSun, Fubao, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationRoderick, Michael, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationFarquhar, Graham, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationLim, Wee Ho, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationZhang , Yongqiang , CSIRO Land and Water
local.contributor.affiliationBennett, Neil, College of Engineering and Computer Science, ANU
local.contributor.affiliationRoxburgh , Stephen H , CSIRO Sustainable Agriculture Flagship
local.bibliographicCitation.issueL12704
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage6
local.identifier.doi10.1029/2010GL043323
local.identifier.absseo960304 - Climate Variability (excl. Social Impacts)
dc.date.updated2016-02-24T11:27:30Z
local.identifier.scopusID2-s2.0-77954397105
local.identifier.thomsonID000279307300005
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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