Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean

Simple item page
dc.contributor.authorThomalla, S J
dc.contributor.authorFauchereau, N
dc.contributor.authorSwart, S
dc.contributor.authorMonteiro, P M S
dc.date.accessioned2021-10-08T06:20:13Z
dc.date.available2021-10-08T06:20:13Z
dc.date.issued2011
dc.description.abstractIn the Ocean, the seasonal cycle is the mode that couples climate forcing to ecosystem response in production, diversity and carbon export. A better characterisation of the ecosystem's seasonal cycle therefore addresses an important gap in our ability to estimate the sensitivity of the biological pump to climate change. In this study, the regional characteristics of the seasonal cycle of phytoplankton biomass in the Southern Ocean are examined in terms of the timing of the bloom initiation, its amplitude, regional scale variability and the importance of the climatological seasonal cycle in explaining the overall variance. The seasonal cycle was consequently defined into four broad zonal regions; the subtropical zone (STZ), the transition zone (TZ), the Antarctic circumpolar zone (ACZ) and the marginal ice zone (MIZ). Defining the Southern Ocean according to the characteristics of its seasonal cycle provides a more dynamic understanding of ocean productivity based on underlying physical drivers rather than climatological biomass. The response of the biology to the underlying physics of the different seasonal zones resulted in an additional classification of four regions based on the extent of inter-annual seasonal phase locking and the magnitude of the integrated seasonal biomass. This regionalisation contributes towards an improved understanding of the regional differences in the sensitivity of the Southern Oceans ecosystem to climate forcing, potentially allowing more robust predictions of the effects of long term climate trends.
dc.identifier.apacitationThomalla, S. J., Fauchereau, N., Swart, S., & Monteiro, P. M. S. (2011). Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean. <i>Biogeosciences</i>, 8(10), 2849 - 2866. http://hdl.handle.net/11427/34228en_ZA
dc.identifier.chicagocitationThomalla, S J, N Fauchereau, S Swart, and P M S Monteiro "Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean." <i>Biogeosciences</i> 8, 10. (2011): 2849 - 2866. http://hdl.handle.net/11427/34228en_ZA
dc.identifier.citationThomalla, S.J., Fauchereau, N., Swart, S. & Monteiro, P.M.S. 2011. Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean. <i>Biogeosciences.</i> 8(10):2849 - 2866. http://hdl.handle.net/11427/34228en_ZA
dc.identifier.issn1726-4170
dc.identifier.issn1726-4189
dc.identifier.ris TY - Journal Article AU - Thomalla, S J AU - Fauchereau, N AU - Swart, S AU - Monteiro, P M S AB - In the Ocean, the seasonal cycle is the mode that couples climate forcing to ecosystem response in production, diversity and carbon export. A better characterisation of the ecosystem's seasonal cycle therefore addresses an important gap in our ability to estimate the sensitivity of the biological pump to climate change. In this study, the regional characteristics of the seasonal cycle of phytoplankton biomass in the Southern Ocean are examined in terms of the timing of the bloom initiation, its amplitude, regional scale variability and the importance of the climatological seasonal cycle in explaining the overall variance. The seasonal cycle was consequently defined into four broad zonal regions; the subtropical zone (STZ), the transition zone (TZ), the Antarctic circumpolar zone (ACZ) and the marginal ice zone (MIZ). Defining the Southern Ocean according to the characteristics of its seasonal cycle provides a more dynamic understanding of ocean productivity based on underlying physical drivers rather than climatological biomass. The response of the biology to the underlying physics of the different seasonal zones resulted in an additional classification of four regions based on the extent of inter-annual seasonal phase locking and the magnitude of the integrated seasonal biomass. This regionalisation contributes towards an improved understanding of the regional differences in the sensitivity of the Southern Oceans ecosystem to climate forcing, potentially allowing more robust predictions of the effects of long term climate trends. DA - 2011 DB - OpenUCT DP - University of Cape Town IS - 10 J1 - Biogeosciences LK - https://open.uct.ac.za PY - 2011 SM - 1726-4170 SM - 1726-4189 T1 - Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean TI - Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean UR - http://hdl.handle.net/11427/34228 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34228
dc.identifier.vancouvercitationThomalla SJ, Fauchereau N, Swart S, Monteiro PMS. Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean. Biogeosciences. 2011;8(10):2849 - 2866. http://hdl.handle.net/11427/34228.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceBiogeosciences
dc.source.journalissue10
dc.source.journalvolume8
dc.source.pagination2849 - 2866
dc.source.urihttps://dx.doi.org/10.5194/bg-8-2849-2011
dc.subject.otherBurns
dc.subject.otherDisaster Planning
dc.subject.otherHumans
dc.subject.otherMass Casualty Incidents
dc.subject.otherNational Health Programs
dc.subject.otherPractice Guidelines as Topic
dc.subject.otherSocieties, Medical
dc.subject.otherSouth Africa
dc.titleRegional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ThomallaSJ_Regional_scale_2011.pdf
Size:
7.44 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Journal Articles