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Literature DB >> 11743160

Regional 14CO2 offsets in the troposphere: magnitude, mechanisms, and consequences.

B Kromer¹, S W Manning, P I Kuniholm, M W Newton, M Spurk, I Levin.

Abstract

Radiocarbon dating methods typically assume that there are no significant tropospheric (14)CO(2) gradients within the low- to mid-latitude zone of the Northern Hemisphere. Comparison of tree ring (14)C data from southern Germany and Anatolia supports this assumption in general but also documents episodes of significant short-term regional (14)CO(2) offsets. We suggest that the offset is caused by an enhanced seasonal (14)CO(2) cycle, with seasonally peaked flux of stratospheric (14)C into the troposphere during periods of low solar magnetic activity, coinciding with substantial atmospheric cooling. Short-term episodes of regional (14)CO(2) offsets are important to palaeoclimate studies and to high-resolution archaeological dating.

Entities: Chemical

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Year: 2001 PMID： 11743160 DOI： 10.1126/science.1066114

Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728

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Cited

7 in total

1. Dead wood biomass and turnover time, measured by radiocarbon, along a subalpine elevation gradient.

Authors: Lara M Kueppers; John Southon; Paul Baer; John Harte
Journal: Oecologia Date: 2004-08-26 Impact factor: 3.225

2. Integrated Tree-Ring-Radiocarbon High-Resolution Timeframe to Resolve Earlier Second Millennium BCE Mesopotamian Chronology.

Authors: Sturt W Manning; Carol B Griggs; Brita Lorentzen; Gojko Barjamovic; Christopher Bronk Ramsey; Bernd Kromer; Eva Maria Wild
Journal: PLoS One Date: 2016-07-13 Impact factor: 3.240

3. Fluctuating radiocarbon offsets observed in the southern Levant and implications for archaeological chronology debates.

Authors: Sturt W Manning; Carol Griggs; Brita Lorentzen; Christopher Bronk Ramsey; David Chivall; A J Timothy Jull; Todd E Lange
Journal: Proc Natl Acad Sci U S A Date: 2018-05-29 Impact factor: 11.205

Regional 14CO2 offsets in the troposphere: magnitude, mechanisms, and consequences.

1. Dead wood biomass and turnover time, measured by radiocarbon, along a subalpine elevation gradient.

2. Integrated Tree-Ring-Radiocarbon High-Resolution Timeframe to Resolve Earlier Second Millennium BCE Mesopotamian Chronology.

3. Fluctuating radiocarbon offsets observed in the southern Levant and implications for archaeological chronology debates.

4. Radiocarbon re-dating of contact-era Iroquoian history in northeastern North America.

5. Temporal population structure, a genetic dating method for ancient Eurasian genomes from the past 10,000 years.

6. Mediterranean radiocarbon offsets and calendar dates for prehistory.

7. Securing timelines in the ancient Mediterranean using multiproxy annual tree-ring data.