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  • 110, M31/3-110.4_MSN1; 414; 601; Arabian Sea; Bay of Bengal; Bermuda; BIGSET; Cape Blanc; Carbonate ion; CB_trap; CBi3; Cenderawasih Bay; Day of study; Event label; Formosa Strait; Globigerinoides ruber white, Magnesium/Calcium ratio; GOC_trap; Guaymas Basin, Gulf of California; HAI; IMAGES VII - WEPAMA; Indian Ocean; JAM-1; JAM-2; JGOFS-IN-2; Latitude of event; Location; Longitude of event; M31/3; M31/3_MSN913; M32/5; M32/5_MSN974; M33/1; M33/1_MSN1007; Marion Dufresne (1995); MD122; MD122-PT10; MD122-PT12; MD122-PT17; MD122-PT18; MD122-PT26; Meteor (1986); MOOR; Mooring; Morphotype; MOZ1_trap; MOZ2; Mozambique Channel; MS-5; MSN; Multiple opening/closing net; NBBT-09; Oceanic Flux Program; off Cap Blanc; off south Java; OFP_trap; pH; POS344/1; Poseidon; Reference/source; Salinity; Sample ID; Sargasso Sea; SCIFF_site; SCS_M1s_trap; SCS_M2_trap; SCS_M3_trap; Sigma; Size fraction; SO119; SO119_MSN1284; Sonne; South China Sea; Sulu Sea; Temperature, water; Towed zooplankton net; Trap; TRAP; Trap, sediment; TRAPS  (1)
  • Anthropogenic climate change  (1)
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  • 1
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    PANGAEA
    In:  Supplement to: Gray, William Robert; Weldeab, Syee; Lea, David W; Rosenthal, Yair; Gruber, Nicolas; Donner, Barbara; Fischer, Gerhard (2018): The effects of temperature, salinity, and the carbonate system on Mg/Ca in Globigerinoides ruber (white): A global sediment trap calibration. Earth and Planetary Science Letters, 482, 607-620, https://doi.org/10.1016/j.epsl.2017.11.026
    Publication Date: 2024-02-16
    Description: The Mg/Ca of planktic foraminifera Globigerinoides ruber (white) is a widely applied proxy for tropical and sub-tropical sea-surface temperature. The accuracy with which temperature can be reconstructed depends on how accurately relationships between Mg/Ca and temperature and the multiple secondary controls on Mg/Ca are known; however, these relationships remain poorly quantified under oceanic conditions. Here, we present new calibrations based on 440 sediment trap/plankton tow samples from the Atlantic, Pacific and Indian Oceans, including 130 new samples from the Bay of Bengal/Arabian Sea and the tropical Atlantic Ocean. Our results indicate temperature, salinity and the carbonate system all significantly influence Mg/Ca in G. ruber (white). We propose two calibration models: The first model assumes pH is the controlling carbonate system parameter. In this model, Mg/Ca has a temperature sensitivity of 6.0 ± 0.8 %/°C (2 Sigma), a salinity sensitivity of 3.3 ± 2.2%/PSU and a pH sensitivity of -8.3 ± 7.7%/0.1 pH units; The second model assumes carbonate ion concentration ([CO3**2-]) is the controlling carbonate system parameter. In this model, Mg/Ca has a temperature sensitivity of 6.7 ± 0.8%/°C, a salinity sensitivity of 5.0 ± 3.0%/PSU and a [CO3**2-] sensitivity of -0.24 ± 0.11/µmol kg**1. In both models, the temperature sensitivity is significantly lower than the widely-applied sensitivity of 9.0 ± 0.6%/°C. Application of our new calibrations to down-core data from the Last Glacial Maximum, considering whole ocean changes in salinity and carbonate chemistry, indicate a cooling of 2.4 ± 1.6 °C in the tropical oceans if pH is the controlling parameter and 1.5 ± 1.4 °C if [CO3**2-] is the controlling parameter.
    Keywords: 110, M31/3-110.4_MSN1; 414; 601; Arabian Sea; Bay of Bengal; Bermuda; BIGSET; Cape Blanc; Carbonate ion; CB_trap; CBi3; Cenderawasih Bay; Day of study; Event label; Formosa Strait; Globigerinoides ruber white, Magnesium/Calcium ratio; GOC_trap; Guaymas Basin, Gulf of California; HAI; IMAGES VII - WEPAMA; Indian Ocean; JAM-1; JAM-2; JGOFS-IN-2; Latitude of event; Location; Longitude of event; M31/3; M31/3_MSN913; M32/5; M32/5_MSN974; M33/1; M33/1_MSN1007; Marion Dufresne (1995); MD122; MD122-PT10; MD122-PT12; MD122-PT17; MD122-PT18; MD122-PT26; Meteor (1986); MOOR; Mooring; Morphotype; MOZ1_trap; MOZ2; Mozambique Channel; MS-5; MSN; Multiple opening/closing net; NBBT-09; Oceanic Flux Program; off Cap Blanc; off south Java; OFP_trap; pH; POS344/1; Poseidon; Reference/source; Salinity; Sample ID; Sargasso Sea; SCIFF_site; SCS_M1s_trap; SCS_M2_trap; SCS_M3_trap; Sigma; Size fraction; SO119; SO119_MSN1284; Sonne; South China Sea; Sulu Sea; Temperature, water; Towed zooplankton net; Trap; TRAP; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 7480 data points
    Location Call Number Expected Availability
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  • 2
    Publication Date: 2022-05-25
    Description: Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here for personal use, not for redistribution. The definitive version was published in Annual Review of Marine Science 8 (2016): 185-215, doi:10.1146/annurev-marine-052915-100829.
    Description: The ocean, a central component of Earth’s climate system, is changing. Given the global scope of these changes, highly accurate measurements of physical and biogeochemical properties need to be conducted over the full water column, spanning the ocean basins from coast to coast, and repeated every decade at a minimum, with a ship-based observing system. Since the late 1970s, when the Geochemical Ocean Sections Study (GEOSECS) conducted the first global survey of this kind, the World Ocean Circulation Experiment (WOCE) and Joint Global Ocean Flux Study (JGOFS), and now the Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) have collected these “reference standard” data that allow quantification of ocean heat and carbon uptake, and variations in salinity, oxygen, nutrients, and acidity on basin scales. The evolving GO-SHIP measurement suite also provides new global information about dissolved organic carbon, a large bioactive reservoir of carbon.
    Description: Climate Observations Division of the U.S. NOAA Climate Program Office and NOAA Research; Joint Institute for the Study of the Atmosphere and Ocean (JISAO) under NOAA Cooperative Agreement NA10OAR4320148; U.S. National Science Foundation [OCE- 0223869; OCE-0752970; OCE-0825163; OCE-1434000; OCE 0752972; OCE-0752980; OCE-1232962; OCE-1155983; OCE-1436748]; U.S. CLIVAR Project Office; Global Environment and Marine Department, Japan Meteorological Agency; Australian Climate Change Science Program (Australian Department of Environment and CSIRO); U.K. Natural Environment Research Council; European Union’s FP7 grant agreement 264879 (CarboChange); Horizon 2020 grant agreement No 633211; ETH Zurich Switzerland.
    Keywords: Anthropogenic climate change ; Ocean temperature change ; Salinity change ; Ocean carbon cycle ; Ocean oxygen and nutrients ; Ocean chlorofluorocarbons ; Ocean circulation change ; Ocean mixing
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
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