PANGAEA_993904 Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Arabian Sea Stack Singh, Dharmendra Pratap Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Arabian Sea Stack 2026-04-29 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993904 Investigator Dharmendra Pratap Singh dharmendra.singh@es.iitr.ac.in Earth Science AGE δ15N, bulk sediment δ15N, standard deviation geoscientificInformation 117-722 355-U1456 Arabian Sea Calypso Corer Calypso square corer Composite Core d15N Exp355 GOA4 GOA6 Gravity corer Gravity corer (Kiel type) Kasten corer KL-74, AS-12 Leg117 M74/1b M74/1b_960-1 MD04-2876 MD04-2879CQ MD10 MD143 MD76-131 ME33-EAST ME33-NAST NIOP_905 NIOP-D2 NIOP-D2_455-1 NIOP-D2_464-1 Piston corer Piston corer (BGR type) RC27 RC27-14 RC27-23 RC27-24 RC27-61 Sedimentary geochemistry Sediment corer SK117_GC_08 SK126-GC39 SL 167 SO42 SO42-74KL SO90 SO90_111KL SS4018G SSD004_GC11 Stack TN Stacked calculated, 1 sigma Joides Resolution Meteor (1986) Marion Dufresne (1995) Marion Dufresne (1972) Tyro Robert Conrad Sonne Sindhu Sadhana 1976-01-01 2007-10-02 Complete 6.0 24.84283 46.9323 78.9312 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 350 data points text/tab-separated-values Pawar, Rahul; Singh, Dharmendra Pratap; Saraswat, Rajeev; Maurya, A S (2026): Orbital forcing regulated Arabian Sea denitrification during the late Pleistocene. Global and Planetary Change, 259, 105373, https://doi.org/10.1016/j.gloplacha.2026.105373 Altabet, Mark A; Francois, Roger; Murray, David W; Prell, Warren L (1995): Climate-related variations in denitrification in the Arabian Sea from sediment 15N/14N ratios. Nature, 373(6514), 506-509, https://doi.org/10.1038/373506a0 Altabet, Mark A; Higginson, Matthew J; Murray, David W (2002): NOAA/WDS Paleoclimatology - Arabian Sea Denitrification Data [dataset]. NOAA National Centers for Environmental Information, https://doi.org/10.25921/K2ME-E263 Altabet, Mark A; Higginson, Matthew J; Murray, David W (2002): The effect of millennial-scale changes in Arabian Sea denitrification on atmospheric CO2. Nature, 415(6868), 159-162, https://doi.org/10.1038/415159a Altabet, Mark A; Murray, David W; Prell, Warren L (1999): Climatically linked oscillations in Arabian Sea denitrification over the past 1 m.y.: Implications for the marine N cycle. Paleoceanography, 14(6), 732-743, https://doi.org/10.1029/1999PA900035 Altabet, Mark A; Murray, David W; Prell, Warren L (1999): Nitrogen content and isotope ratios of ODP Hole 117-722B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.856637 Altabet, Mark A; Murray, David W; Prell, Warren L (1999): Nitrogen content and isotope ratios of sediment core RC27-61 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.856638 Banakar, Virupaxa K; Oba, Tadamichi; Chodankar, A R; Kuramoto, Takayuki; Yamamoto, Masanobu; Minagawa, Masao (2005): Monsoon related changes in sea surface productivity and water column denitrification in the Eastern Arabian Sea during the last glacial cycle. Marine Geology, 219(2-3), 99-108, https://doi.org/10.1016/j.margeo.2005.05.004 Burdanowitz, Nicole; Schmiedl, Gerhard; Gaye, Birgit; Munz, Philipp; Schulz, Hartmut (2024): Nitrogen isotope record and TOC accumulation rates of sediment core GeoTü SL167 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.964228 Burdanowitz, Nicole; Schmiedl, Gerhard; Gaye, Birgit; Munz, Philipp M; Schulz, Hartmut (2024): Distinct oxygenation modes of the Gulf of Oman over the past 43 000 years – a multi-proxy approach. Biogeosciences, 21(6), 1477-1499, https://doi.org/10.5194/bg-21-1477-2024 Ganeshram, Raja S; Pedersen, Thomas F; Calvert, Stephen E; McNeill, Gavin W; Fontugne, Michel R (2000): Glacial‐interglacial variability in denitrification in the World's Oceans: Causes and consequences. Paleoceanography, 15(4), 361-376, https://doi.org/10.1029/1999PA000422 Isaji, Yuta; Kawahata, Hodaka; Ohkouchi, Naohiko; Ogawa, Nanako O; Murayama, Masafumi; Inoue, Kazuki; Tamaki, Kensaku (2015): Varying responses to I ndian monsoons during the past 220 kyr recorded in deep‐sea sediments in inner and outer regions of the G ulf of A den. Journal of Geophysical Research: Oceans, 120(11), 7253-7270, https://doi.org/10.1002/2015JC010982 Ivanochko, Tara S; Ganeshram, Raja S; Brummer, Geert-Jan A; Ganssen, Gerald M; Jung, S J A; Moreton, Stephen; Kroon, Dick (2005): Variations in tropical convection as an amplifier of global climate change at the millennial scale. Earth and Planetary Science Letters, 235(1-2), 302-314, https://doi.org/10.1016/j.epsl.2005.04.002 Jaeschke, Andrea; Ziegler, Martin; Hopmans, Ellen C; Reichart, Gert-Jan; Lourens, Lucas Joost; Schouten, Stefan; Sinninghe Damsté, Jaap S (2009): Figure 4. Geochemistry on sediment core MD04-2879 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.742495 Jaeschke, Andrea; Ziegler, Martin; Hopmans, Ellen C; Reichart, Gert-Jan; Lourens, Lucas Joost; Schouten, Stefan; Sinninghe Damsté, Jaap S (2009): Molecular fossil evidence for anaerobic ammonium oxidation in the Arabian Sea over the last glacial cycle. Paleoceanography, 24(2), PA2202, https://doi.org/10.1029/2008PA001712 Kessarkar, Pratima Mohan; Rao, V Purnachadra; Naqvi, Syed Wajih Ahmad; Chivas, Allan R; Saino, Toshiro (2011): Fluctuations in productivity and denitrification in the southeastern Arabian Sea during the Late Quaternary. Current Science, 99, 485-491, https://www.jstor.org/stable/24109571 Kim, Ji-Eun; Khim, Boo-Keun; Ikehara, Minoru; Lee, Jongmin (2018): Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-25415-7 Möbius, Jürgen; Gaye, Birgit; Lahajnar, Niko; Bahlmann, Enno; Emeis, Kay-Christian (2011): Influence of diagenesis on sedimentary d15N in the Arabian Sea over the last 130 kyr. Marine Geology, 284(1-4), 127-138, https://doi.org/10.1016/j.margeo.2011.03.013 Pichevin, Laetitia; Bard, Edouard; Martinez, Philippe; Billy, Isabelle (2007): Biogeochemical investigations on sediment core MD04-2876 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.727157 Pichevin, Laetitia; Bard, Edouard; Martinez, Philippe; Billy, Isabelle (2007): Evidence of ventilation changes in the Arabian Sea during the late Quaternary: Implication for denitrification and nitrous oxide emission. Global Biogeochemical Cycles, 21, GB4008, https://doi.org/10.1029/2006GB002852 Reichart, Gert-Jan; Lourens, Lucas Joost; Zachariasse, Willem-Jan (1998): Organic carbon content, stable isotopes and planktonic foraminifera in sediments of tghe norther Arabian Sea oxygen minimum zone [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.857398 Reichart, Gert-Jan; Lourens, Lucas Joost; Zachariasse, Willem-Jan (1998): Temporal variability in the northern Arabian Sea oxygen minimum zone (OMZ) during the last 225,000 years. Paleoceanography, 13(6), 607-621, https://doi.org/10.1029/98PA02203 Suthhof, Andreas; Ittekkot, Venugopalan; Gaye-Haake, Birgit (2001): Millennial‐scale oscillation of denitrification intensity in the Arabian Sea during the Late Quaternary and its potential influence on atmospheric N 2 O and global climate. 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The new δ¹⁵N record of sediment core SSD004_GC11 is combined with published regional datasets to produce a basin-wide Arabian Sea denitrification stack. Spectral and cross-wavelet analyses reveal dominant orbital-scale variability, with stronger obliquity influence in the southern basin and precession dominance in northern records. Coherent variability between δ¹⁵N records and atmospheric N₂O concentrations highlights orbital forcing as a key driver of long-term nitrogen cycling and greenhouse gas variability. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993904"!

http://en.wikipedia.org/wiki/Kyr AGE http://www.ifremer.fr/sismer/UK/catal/campagne/campagnea.htql?crno=4200250 MD143 https://doi.org/10.1002/2015JC010982 Varying responses to I ndian monsoons during the past 220 kyr recorded in deep‐sea sediments in inner and outer regions of the G ulf of A den https://doi.org/10.1002/jqs.1398 Did the Indo‐Asian summer monsoon decrease during the Holocene following insolation? https://doi.org/10.1016/j.epsl.2005.04.002 Variations in tropical convection as an amplifier of global climate change at the millennial scale https://doi.org/10.1016/j.gloplacha.2026.105373 Orbital forcing regulated Arabian Sea denitrification during the late Pleistocene https://doi.org/10.1016/j.margeo.2005.05.004 Monsoon related changes in sea surface productivity and water column denitrification in the Eastern Arabian Sea during the last glacial cycle https://doi.org/10.1016/j.margeo.2011.03.013 Influence of diagenesis on sedimentary d15N in the Arabian Sea over the last 130 kyr https://doi.org/10.1029/1999PA000422 Glacial‐interglacial variability in denitrification in the World's Oceans: Causes and consequences https://doi.org/10.1029/1999PA900035 Climatically linked oscillations in Arabian Sea denitrification over the past 1 m.y.: Implications for the marine N cycle https://doi.org/10.1029/2000GB001337 Millennial‐scale oscillation of denitrification intensity in the Arabian Sea during the Late Quaternary and its potential influence on atmospheric N 2 O and global climate https://doi.org/10.1029/2006GB002852 Evidence of ventilation changes in the Arabian Sea during the late Quaternary: Implication for denitrification and nitrous oxide emission https://doi.org/10.1029/2008PA001712 Molecular fossil evidence for anaerobic ammonium oxidation in the Arabian Sea over the last glacial cycle https://doi.org/10.1029/98PA02203 Temporal variability in the northern Arabian Sea oxygen minimum zone (OMZ) during the last 225,000 years https://doi.org/10.1038/373506a0 Climate-related variations in denitrification in the Arabian Sea from sediment 15N/14N ratios https://doi.org/10.1038/415159a The effect of millennial-scale changes in Arabian Sea denitrification on atmospheric CO2 https://doi.org/10.1038/s41598-018-25415-7 Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs https://doi.org/10.25921/K2ME-E263 NOAA/WDS Paleoclimatology - Arabian Sea Denitrification Data https://doi.org/10.25921/W9CA-1Z10 NOAA/WDS Paleoclimatology - NICOPP Global Ocean Sediment Nitrogen Isotope Database https://doi.org/10.5194/bg-21-1477-2024 Distinct oxygenation modes of the Gulf of Oman over the past 43 000 years – a multi-proxy approach https://doi.pangaea.de/10.1594/PANGAEA.727157 Biogeochemical investigations on sediment core MD04-2876 https://doi.pangaea.de/10.1594/PANGAEA.742495 Figure 4. Geochemistry on sediment core MD04-2879 https://doi.pangaea.de/10.1594/PANGAEA.856637 Nitrogen content and isotope ratios of ODP Hole 117-722B https://doi.pangaea.de/10.1594/PANGAEA.856638 Nitrogen content and isotope ratios of sediment core RC27-61 https://doi.pangaea.de/10.1594/PANGAEA.857398 Organic carbon content, stable isotopes and planktonic foraminifera in sediments of tghe norther Arabian Sea oxygen minimum zone https://doi.pangaea.de/10.1594/PANGAEA.964228 Nitrogen isotope record and TOC accumulation rates of sediment core GeoTü SL167 https://en.wikipedia.org/wiki/Marion_Dufresne_(1994) Marion Dufresne (1995) https://en.wikipedia.org/wiki/RV_Meteor_(1986) Meteor (1986) https://en.wikipedia.org/wiki/RV_Sonne Sonne https://fr.wikipedia.org/wiki/Marion_Dufresne_(1972) Marion Dufresne (1972) https://www.jstor.org/stable/24109571 Fluctuations in productivity and denitrification in the southeastern Arabian Sea during the Late Quaternary https://www.nio.res.in/research/research-vessels/rv-sindhu-sadhana Sindhu Sadhana https://www-odp.tamu.edu:443/resolutn.html Joides Resolution PANGAEA_993898 DIF 9.4 2026-04-29 2026-04-29