NOAA/WDS Paleoclimatology - Paleo-pCO2 Database: Meteor Rise, Atlantic Ocean Boron Isotope Data from the Late Miocene
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title: NOAA/WDS Paleoclimatology - Paleo-pCO2 Database: Meteor Rise, Atlantic Ocean Boron Isotope Data from the Late Miocene
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date: 2023-05-04
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Anchor: DOI doi:10.25921/fdr8-nx82
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individualName: Raitzsch, M.
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individualName: Bijma, J.
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abstract: This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Forcing. The data include parameters of climate forcing (other) with a geographic location of South Atlantic Ocean. The time period coverage is from 14400000 to 13100000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
purpose: Records of changes in solar irradiance, volcanic aerosols, atmospheric trace gases, and other properties thought to influence climate in the past. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
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keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Forcing
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date: 2020-01-09
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keyword: earth science > paleoclimate > climate forcing > other
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keyword: Atmospheric Gas Reconstruction
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keyword: Ocean > Atlantic Ocean > South Atlantic Ocean > Meteor Rise > LATITUDE -46.41 > LONGITUDE 7.08
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otherConstraints: Cite as: Raitzsch, M.; Bijma, J.; Bickert, T.; Schulz, M.; Holbourn, A.; Kucera, M. (2023-05-04): NOAA/WDS Paleoclimatology - Paleo-pCO2 Database: Meteor Rise, Atlantic Ocean Boron Isotope Data from the Late Miocene. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/fdr8-nx82. Accessed [date].
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otherConstraints: Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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otherConstraints: Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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otherConstraints: Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
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title: Atmospheric carbon dioxide variations across the middle Miocene climate transition
date: (CI_Date)
date: 2021
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individualName: Markus Raitzsch, Jelle Bijma, Torsten Bickert, Michael Schulz, Ann Holbourn, and Michal Kucera
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description: Markus Raitzsch, Jelle Bijma, Torsten Bickert, Michael Schulz, Ann Holbourn, and Michal Kucera, 2021: Atmospheric carbon dioxide variations across the middle Miocene climate transition. Climate of the Past, 17, 703-719, 10.5194/cp-17-703-2021
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description: Date Range: 14400000 cal yr BP to 13100000 cal yr BP;
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westBoundLongitude: 7.08
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supplementalInformation: ABSTRACT SUPPLIED BY ORIGINATOR: The middle Miocene climate transition 14 Ma marks a fundamental step towards the current “ice-house” climate, with a 1‰ 18O increase and a 1‰ transient 13C rise in the deep ocean, indicating rapid expansion of the East Antarctic Ice Sheet associated with a change in the operation of the global carbon cycle. The variation of atmospheric CO2 across the carbon-cycle perturbation has been intensely debated as proxy records of pCO2 for this time interval are sparse and partly contradictory. Using boron isotopes ( 11B) in planktonic foraminifers from Ocean Drilling Program (ODP) Site 1092 in the South Atlantic, we show that long-term pCO2 varied at 402 kyr periodicity between 14.3 and 13.2 Ma and follows the global 13C variation remarkably well. This suggests a close link to precessional insolation forcing modulated by eccentricity, which governs the monsoon and hence weathering intensity, with enhanced weathering and decreasing pCO2 at high eccentricity and vice versa. The 50 kyr lag of 13C and pCO2 behind eccentricity in our records may be related to the slow response of weathering to orbital forcing. A pCO2 drop of 200 µatm before 13.9Ma may have facilitated the inception of icesheet expansion on Antarctica, which accentuated monsoondriven carbon cycle changes through a major sea-level fall, invigorated deep-water ventilation, and shelf-to-basin shift of carbonate burial. The temporary rise in pCO2 following Antarctic glaciation would have acted as a negative feedback on the progressing glaciation and helped to stabilize the climate system on its way to the late Cenozoic ice-house world.
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fees: In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
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maintenanceNote: This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21
