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  • Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu  (17)
  • John Wiley & Sons  (7)
  • Cambridge University Press  (5)
  • 1
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    Export of strongly diluted Greenland meltwater from a major glacial fjord (2018)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 45 (2018): 4163-4170, doi:10.1029/2018GL077000.
    Description: The Greenland Ice Sheet has been, and will continue, losing mass at an accelerating rate. The influence of this anomalous meltwater discharge on the regional and large‐scale ocean could be considerable but remains poorly understood. This uncertainty is in part a consequence of challenges in observing water mass transformation and meltwater spreading in coastal Greenland. Here we use tracer observations that enable unprecedented quantification of the export, mixing, and vertical distribution of meltwaters leaving one of Greenland's major glacial fjords. We find that the primarily subsurface meltwater input results in the upwelling of the deep fjord waters and an export of a meltwater/deepwater mixture that is 30 times larger than the initial meltwater release. Using these tracer data, the vertical structure of Greenland's summer meltwater export is defined for the first time showing that half the meltwater export occurs below 65 m.
    Description: National Science Foundation Grant Number: OCE-1536856
    Description: 2018-11-05
    Keywords: Greenland ; Ocean-glacier interactions ; Fjord circulation ; Meltwater ; Noble gas ; Overturning
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 2
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    Movement of deep-sea coral populations on climatic timescales (2013)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 28 (2013): 227–236, doi:10.1002/palo.20023.
    Description: During the past 40,000 years, global climate has moved into and out of a full glacial period, with the deglaciation marked by several millennial-scale rapid climate change events. Here we investigate the ecological response of deep-sea coral communities to both glaciation and these rapid climate change events. We find that the deep-sea coral populations of Desmophyllum dianthus in both the North Atlantic and the Tasmanian seamounts expand at times of rapid climate change. However, during the more stable Last Glacial Maximum, the coral population globally retreats to a more restricted depth range. Holocene populations show regional patterns that provide some insight into what causes these dramatic changes in population structure. The most important factors are likely responses to climatically driven changes in productivity, [O2] and [CO32–].
    Description: 2013-11-30
    Keywords: Radiocarbon ; Coral ; Glacial
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 3
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    Spreading of Greenland meltwaters in the ocean revealed by noble gases (2015)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 7705–7713, doi:10.1002/2015GL065003.
    Description: We present the first noble gas observations in a proglacial fjord in Greenland, providing an unprecedented view of surface and submarine melt pathways into the ocean. Using Optimum Multiparameter Analysis, noble gas concentrations remove large uncertainties inherent in previous studies of meltwater in Greenland fjords. We find glacially modified waters with submarine melt concentrations up to 0.66 ± 0.09% and runoff 3.9 ± 0.29%. Radiogenic enrichment of Helium enables identification of ice sheet near-bed melt (0.48 ± 0.08%). We identify distinct regions of meltwater export reflecting heterogeneous melt processes: a surface layer of both runoff and submarine melt and an intermediate layer composed primarily of submarine melt. Intermediate ocean waters carry the majority of heat to the fjords' glaciers, and warmer deep waters are isolated from the ice edge. The average entrainment ratio implies that ocean water masses are upwelled at a rate 30 times the combined glacial meltwater volume flux.
    Description: We gratefully acknowledge funding from WHOI's Ocean and Climate Change Institute, the Doherty Postdoctoral Scholarship, and ship time from the Advanced Climate Dynamics Summer School (SiU grant NNA-2012/10151).
    Description: 2016-03-30
    Keywords: Glacial melt ; Noble gases ; Tracers ; Meltwater ; Greenland ; Fjord
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 4
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    Evolution of the south Pacific helium plume over the past three decades (2017)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 18 (2017): 1810–1823, doi:10.1002/2017GC006848.
    Description: The recent GEOTRACES Eastern Pacific Zonal Transect in 2013 crossed the East Pacific Rise at 15°S following the same track as the 1987 Helios Expedition along the core of the mid-depth helium plume that spreads westward from the East Pacific Rise (EPR) axis. The fact that several stations were co-located with the earlier Helios stations has allowed a detailed comparison of the changes in the helium plume over the intervening 26 years. While the plume in many areas is unchanged, there is a marked decrease in plume intensity at longitude 120°W in the 2013 data which was not present in 1987. Recent radioisotope measurements along the plume track suggest that this decrease is due to the intrusion of a different water mass into the plume, rather than a modulation of hydrothermal input on the EPR axis. Analysis of GEOTRACES hydrographic data shows excess heat present in the plume up to 0.04°C, corresponding to a 3He/heat ratio of ∼2.5 × 10−18 mol J−1, similar to that found in mature hydrothermal vents. RAFOS floats deployed in 1987 indicate an average westward transport of ∼0.3 cm s−1 at 2500 m depth in the off-axis plume, in agreement with recent estimates of ∼0.4 cm s−1 based on “aging” of the plume from 227Ac/3He ratios.
    Description: Earth Ocean Interactions Program; NOAA Pacific Marine Environmental Laboratory
    Description: 2017-11-04
    Keywords: Helium ; East Pacific Rise ; Circulation ; Mid-ocean ridge
    Repository Name: Woods Hole Open Access Server
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  • 5
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    A compilation of dissolved noble gas and N2/Ar ratio measurements collected from 1999-2016 in locations spanning the globe (2022)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Global Noble Gases
    Description: Inert gases dissolved in the ocean are powerful tracers of the impact of physical processes on gases, particularly air-sea gas exchange (by both diffusive and bubble-meditated processes), temperature change, atmospheric pressure variation, mixing between different water masses, and ice processes. We have compiled a global ocean database of dissolved neon, argon, and krypton measurements, supplemented by helium, xenon, and nitrogen/argon (N2/Ar) ratios in some locations. Samples were collected on board multiple research cruises spanning the period 1999 through 2016 and analyzed by mass spectrometry at four different shore-based laboratories (University of Victoria, Woods Hole Oceanographic Institution, University of Washington, and Scripps Institution of Oceanography). Version 2.0 corrects an incorrect sign in the longitude for cruise 33KI20040814:HOT162 in version 1.0. The error in the database does not affect any figures in the publication (doi: 10.1146/annurev-marine-121916-063604). For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/743867
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0623034, NSF Division of Ocean Sciences (NSF OCE) OCE-0926659, National Sciences and Engineering Research Council of Canada (NSERC) 328290-2006, NSF Division of Ocean Sciences (NSF OCE) OCE-1130870, NSF Division of Ocean Sciences (NSF OCE) OCE-1232991, NSF Division of Ocean Sciences (NSF OCE) OCE-1029299, National Sciences and Engineering Research Council of Canada (NSERC) 329290-2012, National Sciences and Engineering Research Council of Canada (NSERC) 433848-2012, National Sciences and Engineering Research Council of Canada (NSERC) 433898-2012, NSF Division of Ocean Sciences (NSF OCE) OCE-9617487, NSF Division of Ocean Sciences (NSF OCE) OCE-9819181, NSF Division of Ocean Sciences (NSF OCE) OCE-9906922, NSF Division of Ocean Sciences (NSF OCE) OCE-0221247, NSF Division of Ocean Sciences (NSF OCE) OCE-0242139, NSF Division of Ocean Sciences (NSF OCE) OCE-0647979, NSF Division of Ocean Sciences (NSF OCE) OCE-0825394
    Keywords: Noble gases ; Nitrogen ; Neon ; Argon ; Krypton ; Carbon pumps
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 6
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    GTC CTD profiles along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N. Atlantic during 2010 (U.S. GEOTRACES NAT project) (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-26
    Description: Dataset: GT10 - CTD - GT-C Profiles
    Description: GTC CTD profiles along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N. Atlantic during 2010 (U.S. GEOTRACES NAT project). For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/3516
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0926423, NSF Division of Ocean Sciences (NSF OCE) OCE-0926092
    Repository Name: Woods Hole Open Access Server
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  • 7
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    ODF CTD profiles along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N Atlantic during 2010 (U.S. GEOTRACES NAT project) (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-26
    Description: Dataset: GT10 - CTD - ODF/SIOR Profiles
    Description: ODF CTD profiles along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N Atlantic during 2010 (U.S. GEOTRACES NAT project). For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/3518
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0926423, NSF Division of Ocean Sciences (NSF OCE) OCE-0926092
    Repository Name: Woods Hole Open Access Server
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  • 8
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    Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-26
    Description: Dataset: GP16 Water Mass Percentages
    Description: Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/713003
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1130870, NSF Division of Ocean Sciences (NSF OCE) OCE-1233339, NSF Division of Ocean Sciences (NSF OCE) OCE-1232991, NSF Division of Ocean Sciences (NSF OCE) OCE-1130245, NSF Division of Ocean Sciences (NSF OCE) OCE-1233028
    Repository Name: Woods Hole Open Access Server
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  • 9
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    Helium isotope with helium and neon concentration data from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 (2021)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-27
    Description: Dataset: GP15 He Isotope C(He) and C(Ne) - Leg 1
    Description: This dataset includes helium isotope, helium, and neon concentration data from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/862182
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1756138
    Repository Name: Woods Hole Open Access Server
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  • 10
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    Helium isotope with helium and neon concentration data from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 2018 (2021)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-05-27
    Description: Dataset: GP15 He Isotope C(He) and C(Ne) - Leg 2
    Description: This dataset includes helium isotope, helium, and neon concentration data from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/862220
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1756138
    Repository Name: Woods Hole Open Access Server
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