title: Coral Sr/Ca-based sea surface temperature and air temperature variability from the inshore and offshore corals in the Seribu Islands, Indonesia.
abstract: The ability of massive Porites corals to faithfully record temperature is assessed. Porites corals from Kepulauan Seribu were sampled from one inshore and one offshore site and analyzed for their Sr/Ca variation. The results show that Sr/Ca of the offshore coral tracked SST, while Sr/Ca variation of the inshore coral tracked ambient air temperature. In particular, the inshore SST variation is related to air temperature anomalies of the urban center of Jakarta. The latter we relate to air-sea interactions modifying inshore SST associated with the land-sea breeze mechanism and/or monsoonal circulation. The correlation pattern of monthly coral Sr/Ca with the Niño3.4 index and SEIO-SST reveals that corals in the Seribu islands region respond differently to remote forcing. An opposite response is observed for inshore and offshore corals in response to El Niño onset, yet similar to El Niño mature phase (December to February). SEIO SSTs co-vary strongly with SST and air temperature variability across the Seribu island reef complex. The results of this study clearly indicate that locations of coral proxy record in Indonesia need to be chosen carefully in order to identify the seasonal climate response to local and remote climate and anthropogenic forcing.
authors.affiliation: Indonesian Institute of Sciences (LIPI)-R.C for Geotechnology, Bandung, Indonesia. Electronic address: sycahyarini@gmail.com.
authors.forename: Sri Yudawati
authors.initials: SY
authors.lastname: Cahyarini
authors.affiliation: Curtin University of Technology, Department of Environment and Agriculture, Australian Institute of Marine Science, Australia; University of the Witwatersrand, School of Geography, Archaeology & Environmental Studies, Wits 2050, South Africa; Freie Universität Berlin, Institute for Paleontology, Malteserstrasse 74-100, 12249 Berlin, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Zinke
authors.affiliation: Vrije Universiteit Amsterdam FALW, Dept. Marine Biogeology, Amsterdam, The Netherlands.
authors.forename: Simon
authors.initials: S
authors.lastname: Troelstra
authors.affiliation: Indonesian Institute of Sciences (LIPI)-R.C for Oceanography, Jakarta, Indonesia.
authors.lastname: Suharsono
authors.affiliation: Meteorological Climatological and Geophysical Agency (BMKG), Jakarta, Indonesia.
authors.forename: Edvin
authors.initials: E
authors.lastname: Aldrian
authors.affiliation: Naturalis Biodiversity Center P.O. Box 9517, 2300 RA Leiden, The Netherlands.
authors.forename: B W
authors.initials: BW
authors.lastname: Hoeksema
mesh_terms: D000388:Air / Q000032:analysis*; D000818:Animals; D037421:Anthozoa / Q000737:chemistry* / Q000502:physiology; D002118:Calcium / Q000032:analysis*; D002947:Cities; D059000:El Nino-Southern Oscillation; D004784:Environmental Monitoring / Q000379:methods*; D007214:Indonesia; D062312:Islands; D010865:Pilot Projects; D012623:Seawater / Q000737:chemistry*; D013324:Strontium / Q000032:analysis*; D013696:Temperature
chemical_list: D002118:Calcium; D013324:Strontium
keywords: Air temperature; Coral; Indonesia; Sea surface temperature; Sr/Ca