Climatic forcing before, during, and after the 8.2Kyr B.P. global cooling event

Devendra Lal; William G. Large; Stephan G. Walker

doi:10.1007/s12040-007-0017-3

Climatic forcing before, during, and after the 8.2Kyr B.P. global cooling event

Devendra Lal
, William G. Large
, Stephan G. Walker

University of California at San Diego
National Center for Atmospheric Research

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

This paper attempts at full characterization of the unique global 8.2 Kyr B.P. cooling event. Significant atmospheric cooling started during 9.5-8.5 Kyr B.P. when the Sun was extremely quiet during three periods of ∼ 50-100 years. The flood of melt water in the N. Atlantic from glacial lakes during the demise of the Laurentide ice sheet, starting at ∼ 8.5 Kyr B.P., adds to the atmospheric cooling. Climatic forcing events occurred at 8.5 Kyr B.P., at 8.2 Kyr B.P. and finally at 8.06 Kyr B.P., leading to concurrent increases or decreases in the atmospheric Δ ¹⁴C levels, completely consistent with the climatic forcing proposed here.

Original language	English
Pages (from-to)	171-177
Number of pages	7
Journal	Journal of Earth System Science
Volume	116
Issue number	3
DOIs	https://doi.org/10.1007/s12040-007-0017-3
State	Published - Jun 2007
Externally published	Yes

Keywords

8.2Kyr cooling event
Atmospheric C
Atmospheric sciences
Atmospheric δO
Climate
Cosmogenic C in ice
Enhanced oceanic mixing
Modeling
Paleoclimate

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10.1007/s12040-007-0017-3

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title = "Climatic forcing before, during, and after the 8.2Kyr B.P. global cooling event",

abstract = "This paper attempts at full characterization of the unique global 8.2 Kyr B.P. cooling event. Significant atmospheric cooling started during 9.5-8.5 Kyr B.P. when the Sun was extremely quiet during three periods of ∼ 50-100 years. The flood of melt water in the N. Atlantic from glacial lakes during the demise of the Laurentide ice sheet, starting at ∼ 8.5 Kyr B.P., adds to the atmospheric cooling. Climatic forcing events occurred at 8.5 Kyr B.P., at 8.2 Kyr B.P. and finally at 8.06 Kyr B.P., leading to concurrent increases or decreases in the atmospheric Δ 14C levels, completely consistent with the climatic forcing proposed here.",

keywords = "8.2Kyr cooling event, Atmospheric C, Atmospheric sciences, Atmospheric δO, Climate, Cosmogenic C in ice, Enhanced oceanic mixing, Modeling, Paleoclimate",

author = "Devendra Lal and Large, \{William G.\} and Walker, \{Stephan G.\}",

year = "2007",

month = jun,

doi = "10.1007/s12040-007-0017-3",

language = "English",

volume = "116",

pages = "171--177",

journal = "Journal of Earth System Science",

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publisher = "Indian Academy of Sciences",

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T1 - Climatic forcing before, during, and after the 8.2Kyr B.P. global cooling event

AU - Lal, Devendra

AU - Large, William G.

AU - Walker, Stephan G.

PY - 2007/6

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N2 - This paper attempts at full characterization of the unique global 8.2 Kyr B.P. cooling event. Significant atmospheric cooling started during 9.5-8.5 Kyr B.P. when the Sun was extremely quiet during three periods of ∼ 50-100 years. The flood of melt water in the N. Atlantic from glacial lakes during the demise of the Laurentide ice sheet, starting at ∼ 8.5 Kyr B.P., adds to the atmospheric cooling. Climatic forcing events occurred at 8.5 Kyr B.P., at 8.2 Kyr B.P. and finally at 8.06 Kyr B.P., leading to concurrent increases or decreases in the atmospheric Δ 14C levels, completely consistent with the climatic forcing proposed here.

AB - This paper attempts at full characterization of the unique global 8.2 Kyr B.P. cooling event. Significant atmospheric cooling started during 9.5-8.5 Kyr B.P. when the Sun was extremely quiet during three periods of ∼ 50-100 years. The flood of melt water in the N. Atlantic from glacial lakes during the demise of the Laurentide ice sheet, starting at ∼ 8.5 Kyr B.P., adds to the atmospheric cooling. Climatic forcing events occurred at 8.5 Kyr B.P., at 8.2 Kyr B.P. and finally at 8.06 Kyr B.P., leading to concurrent increases or decreases in the atmospheric Δ 14C levels, completely consistent with the climatic forcing proposed here.

KW - 8.2Kyr cooling event

KW - Atmospheric C

KW - Atmospheric sciences

KW - Atmospheric δO

KW - Climate

KW - Cosmogenic C in ice

KW - Enhanced oceanic mixing

KW - Modeling

KW - Paleoclimate

UR - https://www.scopus.com/pages/publications/36348957395

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DO - 10.1007/s12040-007-0017-3

M3 - Article

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SN - 0253-4126

VL - 116

SP - 171

EP - 177

JO - Journal of Earth System Science

JF - Journal of Earth System Science

IS - 3

ER -

Climatic forcing before, during, and after the 8.2Kyr B.P. global cooling event

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Keywords

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