NOAA/WDS Paleoclimatology - Clemens and Prell 2003 Arabian Sea Summer Monsoon Proxy Data
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title: NOAA/WDS Paleoclimatology - Clemens and Prell 2003 Arabian Sea Summer Monsoon Proxy Data
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date: 2003-10-17
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Anchor: DOI doi:10.25921/rmmh-ss98
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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 Paleoceanography. The data include parameters of paleoceanography with a geographic location of Indian Ocean. The time period coverage is from 347400 to 6000 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 past climate and ocean circulation derived from marine sediments. 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 > Paleoclimate > Ocean/Lake Records
keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
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date: 2020-01-09
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keyword: earth science > paleoclimate > paleoceanography
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keyword: What: biogenic silica; Material: sediment
keyword: What: barium excess; Material: sediment
keyword: What: age; Material: null
keyword: What: delta 18O; Material: Trilobatus sacculifer
keyword: What: age; Material: null
keyword: What: Globigerina bulloides; Material: null
keyword: What: grain size median; Material: sediment
keyword: What: age; Material: null
keyword: What: barium excess; Material: sediment
keyword: What: notes; Material: null
keyword: What: Globigerina bulloides; Material: null
keyword: What: age; Material: null
keyword: What: delta 15N; Material: sediment
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keyword: What: biogenic silica; Material: sediment
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keyword: Ocean > Indian Ocean > RC27-61 > LATITUDE 16.625 > LONGITUDE 59.861667
keyword: Ocean > Indian Ocean > ODP 722B > LATITUDE 16.621833 > LONGITUDE 59.796
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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otherConstraints: Cite as: Clemens, S.C.; Prell, W.L.; Murray, D.W.; Altabet, M.A.; Shimmield, G.B. (2003-10-17): NOAA/WDS Paleoclimatology - Clemens and Prell 2003 Arabian Sea Summer Monsoon Proxy Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/rmmh-ss98. 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: A 350,000 year summer-monsoon multi-proxy stack from the Owen Ridge, Northern Arabian Sea
date: (CI_Date)
date: 2003
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individualName: Clemens, S.C. and W.L. Prell
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name: Associated Reference published 2003
description: Clemens, S.C. and W.L. Prell, 2003: A 350,000 year summer-monsoon multi-proxy stack from the Owen Ridge, Northern Arabian Sea. Marine Geology, 201, 35-51, 10.1016/S0025-3227(03)00207-X
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description: Date Range: 347400 cal yr BP to 6000 cal yr BP;
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supplementalInformation: ABSTRACT SUPPLIED BY ORIGINATOR: Five summer-monsoon proxies from the Northern Arabian Sea are combined using stacking and principal components analysis (PCA) to create two very similar multi-proxy records of summer-monsoon variability. The five individual proxies all respond to monsoon variability but are largely independent in terms of the processes that complicate their interpretation as summer-monsoon indicators (e.g. preservation, dissolution, diagenesis, sediment reworking). As such, stacking and PCA average out non-monsoon variance, yielding a more pure monsoon signal. These stacked and PCA records (hereafter summer-monsoon stack and summer-monsoon factor) allow evaluation of relative monsoon strength through time as well as the relative concentration of variance within orbital bands; these two parameters are less reliable when estimated from individual proxy records. In fact, the summer-monsoon factor (SMF) accounts for only 33% of the total variance in the five records, suggesting that relative amplitude variations in each individual proxy time series are influenced by non-monsoon processes. The summer-monsoon stack (SMS) and SMF are spectrally very similar, dominated by variance in the 41-k.y. (obliquity) and 23-k.y. (precession) bands; there is very little variance at the 100-k.y. (eccentricity) band associated with large-scale changes in global ice-volume. Indeed, equally strong monsoons occur in both glacial and interglacial intervals. Within the 23-k.y. precession cycle, monsoon maxima fall at −121° relative to precession minima (June 21 perihelion, maximum Northern Hemisphere (NH) summer insolation). This phase falls midway between δ18O minima (−78°) and December 21 perihelion (−180°) indicating that two mechanisms exert equal influence in determining the timing of strong summer monsoons within the precession band: (1) sensible heating of the Asian Plateau which is maximized at times of ice-volume minima (−78°), and (2) latent heat export from the southern subtropical Indian Ocean which is maximized at times of December 21 perihelion (−180°). The seasonal cycle at December 21 perihelion is characterized by warm Southern Hemisphere (SH) summers followed by cold SH winters, a combination that preconditions the ocean to export latent heat during the boreal summer-monsoon season. Summer-monsoon winds transport this latent heat into Asia where it is released during precipitation, enhancing the Asian monsoon low. Within the 41-k.y. obliquity cycle, monsoon maxima are in phase with obliquity maxima. This indicates that two mechanisms, quite similar to those in the precession band, influence the timing of strong summer-monsoons in the obliquity band: (1) sensible heating of the Asian Plateau but with no ice-volume delay, and (2) latent heat export from the southern subtropical Indian Ocean which is maximized at times of obliquity maxima. Again, the seasonal cycle at obliquity maximum is characterized by warm SH summers followed by cold SH winters, ideal for maximizing latent heat export during the boreal summer monsoon.
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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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