More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)

The ²³⁴Th-²³⁸U radioactive pair has been extensively used to evaluate the efficiency with which photosyntetically fixed carbon is exported from the surface ocean by means of the biological pump since the 90's. The seminal work of Buesseler et al. (1992) proposed that particulate organic carbon...

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Main Authors: Ceballos-Romero, Elena, Buesseler, Ken O, Muñoz-Nevado, Carlos, Villa-Alfageme, María
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
234Th
biological carbon pump
carbon export
GEOTRACES
Global marine biogeochemical cycles of trace elements and their isotopes
JGOFS
Joint Global Ocean Flux Study
POC flux
Arctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.937414
id ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.937414
record_format openpolar
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic 234Th
biological carbon pump
carbon export
GEOTRACES
Global marine biogeochemical cycles of trace elements and their isotopes
JGOFS
Joint Global Ocean Flux Study
POC flux
spellingShingle 234Th
biological carbon pump
carbon export
GEOTRACES
Global marine biogeochemical cycles of trace elements and their isotopes
JGOFS
Joint Global Ocean Flux Study
POC flux
Ceballos-Romero, Elena
Buesseler, Ken O
Muñoz-Nevado, Carlos
Villa-Alfageme, María
More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
topic_facet 234Th
biological carbon pump
carbon export
GEOTRACES
Global marine biogeochemical cycles of trace elements and their isotopes
JGOFS
Joint Global Ocean Flux Study
POC flux
description The ²³⁴Th-²³⁸U radioactive pair has been extensively used to evaluate the efficiency with which photosyntetically fixed carbon is exported from the surface ocean by means of the biological pump since the 90's. The seminal work of Buesseler et al. (1992) proposed that particulate organic carbon (POC) flux can be indirectly calculated from ²³⁴Th distributions if the ratio of POC to ²³⁴Th measured on sinking particles (POC:²³⁴Th) at the desired export depth is known. Since then, a huge amount of ²³⁴Th depth profiles have been collected using a variety of sampling instruments and strategies that have changed along years. This is a global oceanic compilation of ²³⁴Th measurements, that collects results from innumerable researchers and laboratories over a period exceeding 50 years. The present compilation is made of a total 223 datasets: 214 from studies published either in articles in referred journals, PhD thesis or repositories, and 9 unpublished datasets. Including measurements from JGOFS, VERTIGO and GEOTRACES programs, with sampling from approximately 5000 locations spanning all the oceans. The compilation includes total ²³⁴Th profiles, dissolved and particulate ²³⁴Th concentrations, and POC:²³⁴Th ratios (both from pumps and sediment traps) for two sizes classes (1-53 μm and < 53 μm) when available. Appropriate metadata have been included, including geographic location, date, and sample depth, among others. When available, we also include water temperature, salinity, ²³⁸U data and particulate organic nitrogen data. Data sources and methods information (including ²³⁸U and ²³⁴Th) are also detailed along with valuable information for future data analysis such as bloom stage and steady/non-steady state conditions at the sampling moment. This undertaking is a treasure of data to understand and quantify how oceanic carbon cycle functions and how it will change in future. This is a compiled version of the dataset doi:10.1594/PANGAEA.918125. It was accepted for publication in PANGAEA and will be fully integrated into ...
format Dataset
author Ceballos-Romero, Elena
Buesseler, Ken O
Muñoz-Nevado, Carlos
Villa-Alfageme, María
author_facet Ceballos-Romero, Elena
Buesseler, Ken O
Muñoz-Nevado, Carlos
Villa-Alfageme, María
author_sort Ceballos-Romero, Elena
title More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
title_short More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
title_full More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
title_fullStr More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
title_full_unstemmed More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
title_sort more than 50 years of th-234 data: a comprehensive global oceanic compilation (compiled xlsx format)
publisher PANGAEA
publishDate 2021
url https://doi.pangaea.de/10.1594/PANGAEA.937414
genre Arctic
genre_facet Arctic
op_relation Ceballos-Romero, Elena; Buesseler, Ken O; Muñoz-Nevado, Carlos; Villa-Alfageme, María (2021): More than 50 years of Th-234 data: a comprehensive global oceanic compilation. PANGAEA, https://doi.org/10.1594/PANGAEA.918125
Alkalay, Ronen; Zlatkin, Olga; Katz, Timor; Herut, Barak; Halicz, Ludwik; Berman-Frank, Ilana; Weinstein, Yishai (2020): Carbon export and drivers in the southeastern Levantine Basin. Deep Sea Research Part II: Topical Studies in Oceanography, 171, 104713, https://doi.org/10.1016/j.dsr2.2019.104713
Amiel, David; Cochran, J Kirk (2008): Terrestrial and marine POC fluxes derived from 234Th distributions and δ13C measurements on the Mackenzie Shelf. Journal of Geophysical Research, 113(C3), https://doi.org/10.1029/2007JC004260
Amiel, David; Cochran, J Kirk; Hirschberg, David J (2002): 234Th/238U disequilibrium as an indicator of the seasonal export flux of particulate organic carbon in the North Water. Deep Sea Research Part II: Topical Studies in Oceanography, 49(22-23), 5191-5209, https://doi.org/10.1016/S0967-0645(02)00185-6
Aono, Tatsuo; Yamada, Masatoshi; Kudo, Isao; Imai, Keiri; Nojiri, Yukihiro; Tsuda, Atsushi (2005): Export fluxes of particulate organic carbon estimated from 234Th/238U disequilibrium during the Subarctic Pacific Iron Experiment for Ecosystem Dynamics Study (SEEDS 2001). Progress in Oceanography, 64(2-4), 263-282, https://doi.org/10.1016/j.pocean.2005.02.013
Bacon, Michael P; Cochran, J Kirk; Hirschberg, David J; Fleer, Alan P (1996): Export flux of carbon at the equator during the EqPac time-series cruises estimated from 234Th measurements. Deep Sea Research Part II: Topical Studies in Oceanography, 43(4-6), 1133-1153, https://doi.org/10.1016/0967-0645(96)00016-1
Bacon, Michael P; Rutgers van der Loeff, Michiel M (1989): Removal of thorium-234 by scavenging in the bottom nepheloid layer of the ocean. Earth and Planetary Science Letters, 92(2), 157-164, https://doi.org/10.1016/0012-821X(89)90043-5
Baskaran, Mark; Santschi, Peter Hans (1993): The role of particles and colloids in the transport of radionuclides in coastal environments of Texas. Marine Chemistry, 43(1-4), 95-114, https://doi.org/10.1016/0304-4203(93)90218-D
Baskaran, Mark; Santschi, Peter Hans; Benoit, David M (1992): Scavenging of thorium isotopes by colloids in seawater of the Gulf of Mexico. Geochimica et Cosmochimica Acta, 56(9), 3375-3388, https://doi.org/10.1016/0016-7037(92)90385-V
Baskaran, Mark; Santschi, Peter Hans; Guo, Laodong; Bianchi, Thomas S; Lambert, Corey D (1996): 234 Th: 238 U disequilibria in the Gulf of Mexico: the importance of organic matter and particle concentration. Continental Shelf Research, 16(3), 353-380, https://doi.org/10.1016/0278-4343(95)00016-T
Baskaran, Mark; Swarzenski, Peter W; Porcelli, Don (2003): Role of colloidal material in the removal of 234Th in the Canada basin of the Arctic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 50(10-11), 1353-1373, https://doi.org/10.1016/S0967-0637(03)00140-7
Baumann, M S; Moran, S Bradley; Lomas, Michael W; Kelly, R P; Bell, D W (2013): Seasonal decoupling of particulate organic carbon export and net primary production in relation to sea-ice at the shelf break of the eastern Bering Sea: Implications for off-shelf carbon export. Journal of Geophysical Research: Oceans, 118(10), 5504-5522, https://doi.org/10.1002/jgrc.20366
Benitez-Nelson, Claudia R; Buesseler, Ken O; Crossin, Glen (2000): Upper ocean carbon export, horizontal transport, and vertical eddy diffusivity in the southwestern Gulf of Maine. Continental Shelf Research, 20(6), 707-736, https://doi.org/10.1016/S0278-4343(99)00093-X
Benitez-Nelson, Claudia R; Buesseler, Ken O; Karl, David Michael; Andrews, John A (2001): A time-series study of particulate matter export in the North Pacific Subtropical Gyre based on 234Th:238U disequilibrium. Deep Sea Research Part I: Oceanographic Research Papers, 48(12), 2595-2611, https://doi.org/10.1016/S0967-0637(01)00032-2
Bhat, Suman G; Krishnaswamy, S; Lal, D; Rama; Moore, Willard S (1969): 234Th/238U ratios in the ocean. Earth and Planetary Science Letters, 5, 483-491, https://doi.org/10.1016/S0012-821X(68)80083-4
Black, Erin; Buesseler, Ken O; Pike, Steven M; Lam, Phoebe J (2018): 234Th as a tracer of particulate export and remineralization in the southeastern tropical Pacific. Marine Chemistry, 201, 35-50, https://doi.org/10.1016/j.marchem.2017.06.009
Brew, H S; Moran, S Bradley; Lomas, Michael W; Burd, Adrian B (2009): Plankton community composition, organic carbon and thorium-234 particle size distributions, and particle export in the Sargasso Sea. Journal of Marine Research, 67(6), 845-868, https://doi.org/10.1357/002224009792006124
Bruland, Kenneth W; Coale, Kenneth H (1986): Surface Water 234Th/238U Disequilibria: Spatial and Temporal Variations of Scavenging Rates within the Pacific Ocean. In: Burton JD, Brewer PG, Chesselet R (Eds) Dynamic Processes in the Chemistry of the Upper Ocean. NATO Conference Series, 17, 159-172, https://doi.org/10.1007/978-1-4684-5215-0_13
Buesseler, Ken O; Andrews, J E; Pike, Steven M; Charette, Matthew A; Goldson, Laura; Brzezinski, Mark A; Lance, V P (2005): Particle export during the Southern Ocean Iron Experiment (SOFeX). Limnology and Oceanography, 50(1), 311-327, https://doi.org/10.4319/lo.2005.50.1.0311
Buesseler, Ken O; Andrews, John A; Hartman, Mary C; Belastock, Rebecca; Chai, Fei (1995): Regional estimates of the export flux of particulate organic carbon derived from thorium-234 during the JGOFS EqPac program. Deep Sea Research Part II: Topical Studies in Oceanography, 42(2-3), 777-804, https://doi.org/10.1016/0967-0645(95)00043-P
Buesseler, Ken O; Bacon, Michael P; Cochran, J Kirk; Livingston, H D (1992): Carbon and nitrogen export during the JGOFS North Atlantic Bloom experiment estimated from 234Th: 238U disequilibria. Deep Sea Research Part A. Oceanographic Research Papers, 39(7-8), 1115-1137, https://doi.org/10.1016/0198-0149(92)90060-7
Buesseler, Ken O; Ball, Lary A; Andrews, James; Benitez-Nelson, Claudia R; Belastock, Rebecca; Chai, Fei; Chao, Yi (1998): Upper ocean export of particulate organic carbon in the Arabian Sea derived from Thorium-234. Deep Sea Research Part II: Topical Studies in Oceanography, 45(10-11), 2461-2487, https://doi.org/10.1016/S0967-0645(98)80022-2
Buesseler, Ken O; Ball, Lary A; Andrews, John E; Cochran, J Kirk; Hirschberg, David J; Bacon, Michael P; Fleer, Alan P; Brzezinski, Mark A (2001): Upper ocean export of particulate organic carbon and biogenic silica in the Southern Ocean along 170°W. Deep Sea Research Part II: Topical Studies in Oceanography, 48(19-20), 4275-4297, https://doi.org/10.1016/S0967-0645(01)00089-3
Buesseler, Ken O; Benitez-Nelson, Claudia R; Roca-Martí, Montserrat; Wyatt, Abigale M; Resplandy, Laure; Clevenger, Samantha J; Drysdale, Jessica A; Estapa, Margaret L; Pike, Steven M; Umhau, Blaire P (2020): High-resolution spatial and temporal measurements of particulate organic carbon flux using thorium-234 in the northeast Pacific Ocean during the EXport Processes in the Ocean from RemoTe Sensing field campaign. Elementa - Science of the Anthropocene, 8(1), 030, https://doi.org/10.1525/elementa.2020.030
Buesseler, Ken O; Lamborg, C H; Cai, Pinghe; Escoube, R; Johnson, Rodney J; Pike, Jennifer; Masqué, Pere; McGillicuddy, Dennis; Verdeny, E (2008): Particle fluxes associated with mesoscale eddies in the Sargasso Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 55(10-13), 1426-1444, https://doi.org/10.1016/j.dsr2.2008.02.007
Buesseler, Ken O; McDonnell, Andrew; Schofield, Oscar; Steinberg, Deborah K; Ducklow, Hugh W (2010): High particle export over the continental shelf of the west Antarctic Peninsula. Geophysical Research Letters, 37(22), L22606, https://doi.org/10.1029/2010GL045448
Buesseler, Ken O; Michaels, Anthony F; Siegel, David A; Knap, Anthony H (1994): A three dimensional time-dependent approach to calibrating sediment trap fluxes. Global Biogeochemical Cycles, 8(2), 179-193, https://doi.org/10.1029/94GB00207
Buesseler, Ken O: Personal communication. Southern Ocean data, 06/01/2009 - 30/01/2009.
Buesseler, Ken O: Personal communication. Southern Ocean data, 20/02/2009 - 14/03/2009.
Buesseler, Ken O; Pike, Steven M; Maiti, Kanchan; Lamborg, C H; Siegel, David A; Trull, Tom W (2009): Thorium-234 as a tracer of spatial, temporal and vertical variability in particle flux in the North Pacific. Deep Sea Research Part I: Oceanographic Research Papers, 56(7), 1143-1167, https://doi.org/10.1016/j.dsr.2009.04.001
Buesseler, Ken O; Steinberg, Deborah K; Michaels, Anthony F; Johnson, Rodney J; Andrews, John E; Valdes, J R; Price, James F (2000): A comparison of the quantity and composition of material caught in a neutrally buoyant versus surface-tethered sediment trap. Deep Sea Research Part I: Oceanographic Research Papers, 47(2), 277-294, https://doi.org/10.1016/S0967-0637(99)00056-4
Cai, Pinghe; Chen, Weifang; Dai, Minhan; Wan, Zhenwen; Wang, Dongxiao; Li, Qing; Tang, Tiantian; Lv, Dongwei (2008): A high-resolution study of particle export in the southern South China Sea based on 234Th:238U disequilibrium. Journal of Geophysical Research, 113(C4), C04019, https://doi.org/10.1029/2007JC004268
Cai, Pinghe; Dai, Minhan; Chen, Weifang; Tang, Tiantian; Zhou, Kuanbo (2006): On the importance of the decay of 234Th in determining size-fractionated C/234Th ratio on marine particles. Geophysical Research Letters, 33(23), L23602, https://doi.org/10.1029/2006GL027792
Cai, Pinghe; Dai, Minhan; Lv, Dongwei; Chen, Weifang (2006): How accurate are 234Th measurements in seawater based on the MnO2-impregnated cartridge technique? Geochemistry, Geophysics, Geosystems, 7(3), Q03020, https://doi.org/10.1029/2005GC001104
Cai, Pinghe; Huang, Yipu; Chen, Min; Guo, Laodong; Liu, Guangshan; Qiu, Yusheng (2002): New production based on 228Ra-derived nutrient budgets and thorium-estimated POC export at the intercalibration station in the South China Sea. Deep Sea Research Part I: Oceanographic Research Papers, 49(1), 53-66, https://doi.org/10.1016/S0967-0637(01)00040-1
Cai, Pinghe; Huang, Yipu; Chen, Min; Liu, Guangshan; Qiu, Yusheng (2001): Export of particulate organic carbon estimated from 234Th-238U disequilibria and its temporal variation in the South China Sea. Chinese Science Bulletin, 46(20), 1722-1726, https://doi.org/10.1007/BF02900660
Cai, Pinghe; Rutgers van der Loeff, Michiel M; Stimac, Ingrid; Nöthig, Eva-Maria; Lepore, Kate; Moran, S Bradley (2010): Low export flux of particulate organic carbon in the central Arctic Ocean as revealed by 234Th:238U disequilibrium. Journal of Geophysical Research: Oceans, 115, C10037, https://doi.org/10.1029/2009JC005595
Cai, Pinghe; Zhao, Daochen; Wang, Lei; Huang, Bangqin; Dai, Minhan (2015): Role of particle stock and phytoplankton community structure in regulating particulate organic carbon export in a large marginal sea. Journal of Geophysical Research: Oceans, 120(3), 2063-2095, https://doi.org/10.1002/2014JC010432
California Current Ecosystem LTER; Stukel, Michael R (2019): Total Thorium-234 (Th-234) taken from discrete water column samples collected during CCE Process Cruises (2006 - 2017). Environmental Data Initiative, https://doi.org/10.6073/pasta/f124cdffb311eaf778519c873314ffdc
Ceballos-Romero, Elena; Le Moigne, Frédéric A C; Henson, Stephanie A; Marsay, Christopher M; Sanders, Richard J; García-Tenorio, Rafael; Villa-Alfageme, María (2016): Influence of bloom dynamics on Particle Export Efficiency in the North Atlantic: a comparative study of radioanalytical techniques and sediment traps. Marine Chemistry, 186, 198-210, https://doi.org/10.1016/j.marchem.2016.10.001
Ceballos-Romero, Elena: Personal communication. Southern Ocean data, 01/12/2013 - 12/12/2013.
Charette, Matthew A; Buesseler, Ken O (2000): Does iron fertilization lead to rapid carbon export in the Southern Ocean? Geochemistry, Geophysics, Geosystems, 1, 1-7, https://doi.org/10.1029/2000GC000069
Charette, Matthew A; Dulaiova, H (2009): Thorium isotope data summaries from R/V Yuzhmorgeologiya, RVIB Nathaniel B. Palmer AMLR2006-Leg1, NBP0606 in the Southern Ocean from January to August 2006 (Ant2006 project, BWZ project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 11 March 2009) Version Date 2009-03-11, http://lod.bco-dmo.org/id/dataset/3086
Charette, Matthew A; Moran, S Bradley (1999): Rates of particle scavenging and particulate organic carbon export estimated using 234Th as a tracer in the subtropical and equatorial Atlantic Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 46(5), 885-906, https://doi.org/10.1016/S0967-0645(99)00006-5
Charette, Matthew A; Moran, S Bradley; Bishop, James K B (1999): 234Th as a tracer of particulate organic carbon export in the subarctic Northeast Pacific Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 46(11-12), 2833-2861, https://doi.org/10.1016/S0967-0645(99)00085-5
Charette, Matthew A; Moran, S Bradley; Pike, Steven M; Smith, John N (2001): Investigating the carbon cycle in the Gulf of Maine using the natural tracer thorium 234. Journal of Geophysical Research, 106(C6), 11553, https://doi.org/10.1029/1999JC000277
Chen, Min; Huang, Yipu; Cai, Pinghe; Guo, Laodong (2003): Particulate Organic Carbon Export Fluxes in The Canada Basin and Bering Sea as Derived from 234Th/238U Disequilibria. Arctic, 56(1), https://doi.org/10.14430/arctic600
Chen, Weifang; Cai, Pinghe; Dai, Minhan; Wei, Junfeng (2008): 234Th/238U disequilibrium and particulate organic carbon export in the northern South China Sea. Journal of Oceanography, 64(3), 417-428, https://doi.org/10.1007/s10872-008-0035-z
Claustre, Hervé; Sciandra, Antoine (2004): BIOSOPE cruise, RV L'Atalante. Sismer, https://doi.org/10.17600/4010100
Coale, Kenneth H; Bruland, Kenneth W (1985): 234Th:238U disequilibria within the California Current. Limnology and Oceanography, 30(1), 22-33, https://doi.org/10.4319/lo.1985.30.1.0022
op_rights CC-BY-4.0: Creative Commons Attribution 4.0 International
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.1594/PANGAEA.918125
https://doi.org/10.1016/j.dsr2.2019.104713
https://doi.org/10.1029/2007JC004260
https://doi.org/10.1016/S0967-0645(02)00185-6
https://doi.org/10.1016/j.pocean.2005.02.013
https://doi.org/10.1016/0967-0645(9
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spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.937414 2023-05-15T14:28:23+02:00 More than 50 years of Th-234 data: a comprehensive global oceanic compilation (compiled xlsx format) Ceballos-Romero, Elena Buesseler, Ken O Muñoz-Nevado, Carlos Villa-Alfageme, María 2021-10-15 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 12.8 MBytes https://doi.pangaea.de/10.1594/PANGAEA.937414 en eng PANGAEA Ceballos-Romero, Elena; Buesseler, Ken O; Muñoz-Nevado, Carlos; Villa-Alfageme, María (2021): More than 50 years of Th-234 data: a comprehensive global oceanic compilation. PANGAEA, https://doi.org/10.1594/PANGAEA.918125 Alkalay, Ronen; Zlatkin, Olga; Katz, Timor; Herut, Barak; Halicz, Ludwik; Berman-Frank, Ilana; Weinstein, Yishai (2020): Carbon export and drivers in the southeastern Levantine Basin. Deep Sea Research Part II: Topical Studies in Oceanography, 171, 104713, https://doi.org/10.1016/j.dsr2.2019.104713 Amiel, David; Cochran, J Kirk (2008): Terrestrial and marine POC fluxes derived from 234Th distributions and δ13C measurements on the Mackenzie Shelf. Journal of Geophysical Research, 113(C3), https://doi.org/10.1029/2007JC004260 Amiel, David; Cochran, J Kirk; Hirschberg, David J (2002): 234Th/238U disequilibrium as an indicator of the seasonal export flux of particulate organic carbon in the North Water. Deep Sea Research Part II: Topical Studies in Oceanography, 49(22-23), 5191-5209, https://doi.org/10.1016/S0967-0645(02)00185-6 Aono, Tatsuo; Yamada, Masatoshi; Kudo, Isao; Imai, Keiri; Nojiri, Yukihiro; Tsuda, Atsushi (2005): Export fluxes of particulate organic carbon estimated from 234Th/238U disequilibrium during the Subarctic Pacific Iron Experiment for Ecosystem Dynamics Study (SEEDS 2001). Progress in Oceanography, 64(2-4), 263-282, https://doi.org/10.1016/j.pocean.2005.02.013 Bacon, Michael P; Cochran, J Kirk; Hirschberg, David J; Fleer, Alan P (1996): Export flux of carbon at the equator during the EqPac time-series cruises estimated from 234Th measurements. Deep Sea Research Part II: Topical Studies in Oceanography, 43(4-6), 1133-1153, https://doi.org/10.1016/0967-0645(96)00016-1 Bacon, Michael P; Rutgers van der Loeff, Michiel M (1989): Removal of thorium-234 by scavenging in the bottom nepheloid layer of the ocean. Earth and Planetary Science Letters, 92(2), 157-164, https://doi.org/10.1016/0012-821X(89)90043-5 Baskaran, Mark; Santschi, Peter Hans (1993): The role of particles and colloids in the transport of radionuclides in coastal environments of Texas. Marine Chemistry, 43(1-4), 95-114, https://doi.org/10.1016/0304-4203(93)90218-D Baskaran, Mark; Santschi, Peter Hans; Benoit, David M (1992): Scavenging of thorium isotopes by colloids in seawater of the Gulf of Mexico. Geochimica et Cosmochimica Acta, 56(9), 3375-3388, https://doi.org/10.1016/0016-7037(92)90385-V Baskaran, Mark; Santschi, Peter Hans; Guo, Laodong; Bianchi, Thomas S; Lambert, Corey D (1996): 234 Th: 238 U disequilibria in the Gulf of Mexico: the importance of organic matter and particle concentration. Continental Shelf Research, 16(3), 353-380, https://doi.org/10.1016/0278-4343(95)00016-T Baskaran, Mark; Swarzenski, Peter W; Porcelli, Don (2003): Role of colloidal material in the removal of 234Th in the Canada basin of the Arctic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 50(10-11), 1353-1373, https://doi.org/10.1016/S0967-0637(03)00140-7 Baumann, M S; Moran, S Bradley; Lomas, Michael W; Kelly, R P; Bell, D W (2013): Seasonal decoupling of particulate organic carbon export and net primary production in relation to sea-ice at the shelf break of the eastern Bering Sea: Implications for off-shelf carbon export. Journal of Geophysical Research: Oceans, 118(10), 5504-5522, https://doi.org/10.1002/jgrc.20366 Benitez-Nelson, Claudia R; Buesseler, Ken O; Crossin, Glen (2000): Upper ocean carbon export, horizontal transport, and vertical eddy diffusivity in the southwestern Gulf of Maine. Continental Shelf Research, 20(6), 707-736, https://doi.org/10.1016/S0278-4343(99)00093-X Benitez-Nelson, Claudia R; Buesseler, Ken O; Karl, David Michael; Andrews, John A (2001): A time-series study of particulate matter export in the North Pacific Subtropical Gyre based on 234Th:238U disequilibrium. Deep Sea Research Part I: Oceanographic Research Papers, 48(12), 2595-2611, https://doi.org/10.1016/S0967-0637(01)00032-2 Bhat, Suman G; Krishnaswamy, S; Lal, D; Rama; Moore, Willard S (1969): 234Th/238U ratios in the ocean. Earth and Planetary Science Letters, 5, 483-491, https://doi.org/10.1016/S0012-821X(68)80083-4 Black, Erin; Buesseler, Ken O; Pike, Steven M; Lam, Phoebe J (2018): 234Th as a tracer of particulate export and remineralization in the southeastern tropical Pacific. Marine Chemistry, 201, 35-50, https://doi.org/10.1016/j.marchem.2017.06.009 Brew, H S; Moran, S Bradley; Lomas, Michael W; Burd, Adrian B (2009): Plankton community composition, organic carbon and thorium-234 particle size distributions, and particle export in the Sargasso Sea. Journal of Marine Research, 67(6), 845-868, https://doi.org/10.1357/002224009792006124 Bruland, Kenneth W; Coale, Kenneth H (1986): Surface Water 234Th/238U Disequilibria: Spatial and Temporal Variations of Scavenging Rates within the Pacific Ocean. In: Burton JD, Brewer PG, Chesselet R (Eds) Dynamic Processes in the Chemistry of the Upper Ocean. NATO Conference Series, 17, 159-172, https://doi.org/10.1007/978-1-4684-5215-0_13 Buesseler, Ken O; Andrews, J E; Pike, Steven M; Charette, Matthew A; Goldson, Laura; Brzezinski, Mark A; Lance, V P (2005): Particle export during the Southern Ocean Iron Experiment (SOFeX). Limnology and Oceanography, 50(1), 311-327, https://doi.org/10.4319/lo.2005.50.1.0311 Buesseler, Ken O; Andrews, John A; Hartman, Mary C; Belastock, Rebecca; Chai, Fei (1995): Regional estimates of the export flux of particulate organic carbon derived from thorium-234 during the JGOFS EqPac program. Deep Sea Research Part II: Topical Studies in Oceanography, 42(2-3), 777-804, https://doi.org/10.1016/0967-0645(95)00043-P Buesseler, Ken O; Bacon, Michael P; Cochran, J Kirk; Livingston, H D (1992): Carbon and nitrogen export during the JGOFS North Atlantic Bloom experiment estimated from 234Th: 238U disequilibria. Deep Sea Research Part A. Oceanographic Research Papers, 39(7-8), 1115-1137, https://doi.org/10.1016/0198-0149(92)90060-7 Buesseler, Ken O; Ball, Lary A; Andrews, James; Benitez-Nelson, Claudia R; Belastock, Rebecca; Chai, Fei; Chao, Yi (1998): Upper ocean export of particulate organic carbon in the Arabian Sea derived from Thorium-234. 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Limnology and Oceanography, 30(1), 22-33, https://doi.org/10.4319/lo.1985.30.1.0022 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY 234Th biological carbon pump carbon export GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes JGOFS Joint Global Ocean Flux Study POC flux Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.918125 https://doi.org/10.1016/j.dsr2.2019.104713 https://doi.org/10.1029/2007JC004260 https://doi.org/10.1016/S0967-0645(02)00185-6 https://doi.org/10.1016/j.pocean.2005.02.013 https://doi.org/10.1016/0967-0645(9 2022-06-26T05:54:03Z The ²³⁴Th-²³⁸U radioactive pair has been extensively used to evaluate the efficiency with which photosyntetically fixed carbon is exported from the surface ocean by means of the biological pump since the 90's. The seminal work of Buesseler et al. (1992) proposed that particulate organic carbon (POC) flux can be indirectly calculated from ²³⁴Th distributions if the ratio of POC to ²³⁴Th measured on sinking particles (POC:²³⁴Th) at the desired export depth is known. Since then, a huge amount of ²³⁴Th depth profiles have been collected using a variety of sampling instruments and strategies that have changed along years. This is a global oceanic compilation of ²³⁴Th measurements, that collects results from innumerable researchers and laboratories over a period exceeding 50 years. The present compilation is made of a total 223 datasets: 214 from studies published either in articles in referred journals, PhD thesis or repositories, and 9 unpublished datasets. Including measurements from JGOFS, VERTIGO and GEOTRACES programs, with sampling from approximately 5000 locations spanning all the oceans. The compilation includes total ²³⁴Th profiles, dissolved and particulate ²³⁴Th concentrations, and POC:²³⁴Th ratios (both from pumps and sediment traps) for two sizes classes (1-53 μm and < 53 μm) when available. Appropriate metadata have been included, including geographic location, date, and sample depth, among others. When available, we also include water temperature, salinity, ²³⁸U data and particulate organic nitrogen data. Data sources and methods information (including ²³⁸U and ²³⁴Th) are also detailed along with valuable information for future data analysis such as bloom stage and steady/non-steady state conditions at the sampling moment. This undertaking is a treasure of data to understand and quantify how oceanic carbon cycle functions and how it will change in future. This is a compiled version of the dataset doi:10.1594/PANGAEA.918125. It was accepted for publication in PANGAEA and will be fully integrated into ... Dataset Arctic PANGAEA - Data Publisher for Earth & Environmental Science

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