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Ras Umm Sidd Coral Oxygen Isotope Data, NOAA/NCDC/WDC Paleoclimatology Entry ID: NOAA_NCDC_PALEO_2000-067 |
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Summary
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Abstract:
This data set consists of Ras Umm Sidd bimonthly coral oxygen isotope data (coral core RUS-95). [Abstract] A 245-year coral oxygen isotope record from the northern Red Sea (Ras Umm Sidd/Egypt, ~28 deg. N) in bimonthly resolution is presented. The mean annual coral d18O signal apparently reflects varying proportions of both sea surface temperature and d18Oseawater variability. In conjunction with instrumental observations of climate the coral record suggests for interannual and longer timescales that colder periods are accompanied by more arid conditions in the northern Red Sea but increased rainfall in the southeastern Mediterranean, whereas warmer periods are accompanied by decreased rainfall in the latter and less arid conditions in the northern Red Sea. A ~70-year oscillation of probably North Atlantic origin dominates the coral time series. Interannual to interdecadal variability is correlated with instrumental indices of the North Atlantic Oscillation (NAO), the El Nino- Southern Oscillation (ENSO), and North Pacific climate variability. The results suggest that these modes contributed consistently to Middle East climate variability since at least 1750, preferentially at a period of ~5.7 years. The coral core was collected in the end of November 1995 in the northern Red Sea at Ras Umm Sidd (27 deg 50.9'N, 34 deg. 18.6'E) in the Ras Mohammed National Park near the southern tip of the Sinai Peninsula (Egypt), from a 2.6-m-high coral colony (Porites sp.) growing at a water depth of ~5.5 m. The average annual growth rate of the coral is 1 cm/year. The average sampling resolution for oxygen isotope analysis is more than 6 samples per year. The coral chronology is constructed by setting the maximum d18O value in a given year equal to mid-February (consistent with the climatological minimum in sea surface temperature) and assuming a constant coral growth rate between February of every year. Therefore we interpolated linearly between these fixed points for further age assignments. The resulting values were interpolated linearly to six equally spaced values per year, providing a bimonthly resolution. The strong seasonal cycle in d18O was used to count annual layers in the coral, supported by the consistent density banding pattern of low-density band creation during winter and high-density band creation during summer. The coral record extends from fall 1750 to fall 1995. We assigned an age model error of at least 2-3 months to the coral chronology. In addition, we assigned an age model error of +/-1 year to the interval 1924-1783 and an additional +/-1 year to 1782-1750. Therefore the chronology is assigned a cumulative age model error of less than +/-3 years at the bottom of the core. |
Related URL
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Link:
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Description: Access to the Ras Umm Sidd Coral Oxygen Isotope Data Link: VIEW RELATED INFORMATION Description: Additional information and links Link: VIEW RELATED INFORMATION Description: Additional descriptive information on this data set |
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Geographic Coverage
| N: 27.84 | S: 27.84 | E: 34.31 | W: 34.31 |
| Min Depth: 0 M | Max Depth: 5.5 M |
Data Set Citation
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Dataset Originator/Creator:
Thomas Felis, Jurgen Patzold, Gerold Wefer
Dataset Title: Ras Umm Sidd Coral Oxygen Isotope Data Dataset Release Date: December 2000 Dataset Release Place: Boulder, CO Dataset Publisher: IGBP PAGES/World Data Center Paleoclimatology Issue Identification: IGBP PAGES/WDC Paleoclimatology Contribution #2000-067 Other Citation Details: NOAA/NCDC Paleoclimatology Program, Boulder CO, USA Online Resource: http://www.ngdc.noaa.gov/paleo/pubs/felis2000/felis2000.html |
Temporal Coverage
| Start Date: 1750-11-01 |
| Stop Date: 1995-11-30 |
Paleo_Temporal_Coverage
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Paleo Start Date:
350 ybp
Paleo Stop Date: 0 ybp Chrono Unit: |
Location Keywords
Data Resolution
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Temporal Resolution:
bimonthly
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Science Keywords
| PALEOCLIMATE >OCEAN/LAKE RECORDS >CORAL DEPOSITS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >ISOTOPES [Definition] |
| CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >EL NINO SOUTHERN OSCILLATION (ENSO) >ENSO [Definition] |
| CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >NORTH ATLANTIC OSCILLATION >NAO [Definition] |
| CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >PACIFIC DECADAL OSCILLATION >PDO [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION OCEANS |
Project
| IGBP >International Geosphere-Biosphere Programme [Information] |
| PAGES >Past Global Changes, IGBP [Information] |
Access Constraints
| None |
Use Constraints
| None |
Keywords
| coral oxygen isotopes |
| Red Sea |
| Ras Mohammed National Park |
| Middle East |
| North Atlantic Oscillation |
| NAO |
| ENSO |
| El Nino Southern Oscillation |
| Pacific Decadal Oscillation |
| PDO |
| climate teleconnections |
Data Set Progress
| COMPLETE |
Originating Center
| NOAA/NCDC |
Data Center
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/ Dataset ID: Data Contribution Series #2000-067
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Distribution
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Distribution_Media:
online www, ftp
Distribution_Format: ascii Fees: none |
Personnel
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THOMAS
FELIS Role: INVESTIGATOR Contact Address: Fachbereich Geowissenschaften Universitat Bremen Bibliohekstrase 1 City: Bremen Postal Code: 28359 Country: Germany |
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JURGEN
PATZOLD Role: INVESTIGATOR Contact Address: Fachbereich Geowissenschaften Universitat Bremen City: Bibliohekstrase Province or State: Bremen Postal Code: 1-28359 Country: GERMANY |
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GERALD
WEFER Role: INVESTIGATOR Contact Address: Fachbereich Geowissenschaften Universitat Bremen City: Bibliohekstrase Province or State: Bremen Postal Code: 1 - 28359 Country: GERMANY |
Publications/References
Felis, T., J. Patzold, Y. Loya, M. Fine, A. H. Nawar, and G. Wefer,
2000, A coral oxygen isotope record from the northern Red Sea
documenting NAO, ENSO, and North Pacific teleconnections on Middle
East climate variability since the year 1750. Paleoceanography, 15,
679-694.
Rimbu, N., G. Lohmann, T. Felis, and J. PC$tzold, 2001, Arctic
Oscillation signature in a Red Sea coral. Geophysical Research
Letters, 28, 2959-2962.
Rimbu, N., G. Lohmann, T. Felis, and J. Patzold, 2003, Shift in ENSO
teleconnections recorded by a northern Red Sea coral, Journal of
Climate, 16, 1414-1422.
2000, A coral oxygen isotope record from the northern Red Sea
documenting NAO, ENSO, and North Pacific teleconnections on Middle
East climate variability since the year 1750. Paleoceanography, 15,
679-694.
Rimbu, N., G. Lohmann, T. Felis, and J. PC$tzold, 2001, Arctic
Oscillation signature in a Red Sea coral. Geophysical Research
Letters, 28, 2959-2962.
Rimbu, N., G. Lohmann, T. Felis, and J. Patzold, 2003, Shift in ENSO
teleconnections recorded by a northern Red Sea coral, Journal of
Climate, 16, 1414-1422.
Creation and Review Dates
DIF Creation Date:
2003-04-22
Last DIF Revision Date:
2009-01-21
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