A 600-year annual 10Be record from the NGRIP ice core, Greenland

A.M. Berggren; Sigfus Johann Johnsen; Bo Møllesøe Vinther

doi:10.1029/2009GL038004

A 600-year annual ¹⁰Be record from the NGRIP ice core, Greenland

A.M. Berggren, Sigfus Johann Johnsen, Bo Møllesøe Vinther

Is-, Klima- og Geofysik

127 Citationer (Scopus)

Abstract

Despite the extensive use of ¹⁰Be as the most significant information source on past solar activity, there has been only one record (Dye-3, Greenland) providing annual resolution over several centuries. Here we report a new annual resolution ¹⁰Be record spanning the period 1389-1994 AD, measured in an ice core from the NGRIP site in Greenland. NGRIP and Dye-3 ¹⁰Be exhibits similar long-term variability, although occasional short term differences between the two sites indicate that at least two high resolution ¹⁰Be records are needed to assess local variations and to confidently reconstruct past solar activity. A comparison with sunspot and neutron records confirms that ice core ¹⁰Be reflects solar Schwabe cycle variations, and continued ¹⁰Be variability suggests cyclic solar activity throughout the Maunder and Spörer grand solar activity minima. Recent ¹⁰Be values are low; however, they do not indicate unusually high recent solar activity compared to the last 600 years.
Udgivelsesdato: 2 June

Originalsprog	Engelsk
Tidsskrift	Geophysical Research Letters
Vol/bind	36
Sider (fra-til)	L11801
ISSN	0094-8276
DOI	https://doi.org/10.1029/2009GL038004
Status	Udgivet - 2009

Adgang til dokumentet

10.1029/2009GL038004

Citationsformater

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title = "A 600-year annual 10Be record from the NGRIP ice core, Greenland",

abstract = "Despite the extensive use of 10Be as the most significant information source on past solar activity, there has been only one record (Dye-3, Greenland) providing annual resolution over several centuries. Here we report a new annual resolution 10Be record spanning the period 1389-1994 AD, measured in an ice core from the NGRIP site in Greenland. NGRIP and Dye-3 10Be exhibits similar long-term variability, although occasional short term differences between the two sites indicate that at least two high resolution 10Be records are needed to assess local variations and to confidently reconstruct past solar activity. A comparison with sunspot and neutron records confirms that ice core 10Be reflects solar Schwabe cycle variations, and continued 10Be variability suggests cyclic solar activity throughout the Maunder and Sp{\"o}rer grand solar activity minima. Recent 10Be values are low; however, they do not indicate unusually high recent solar activity compared to the last 600 years. Udgivelsesdato: 2 June",

author = "A.M. Berggren and Johnsen, {Sigfus Johann} and Vinther, {Bo M{\o}lles{\o}e}",

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journal = "Geophysical Research Letters",

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T1 - A 600-year annual 10Be record from the NGRIP ice core, Greenland

AU - Berggren, A.M.

AU - Johnsen, Sigfus Johann

AU - Vinther, Bo Møllesøe

PY - 2009

Y1 - 2009

N2 - Despite the extensive use of 10Be as the most significant information source on past solar activity, there has been only one record (Dye-3, Greenland) providing annual resolution over several centuries. Here we report a new annual resolution 10Be record spanning the period 1389-1994 AD, measured in an ice core from the NGRIP site in Greenland. NGRIP and Dye-3 10Be exhibits similar long-term variability, although occasional short term differences between the two sites indicate that at least two high resolution 10Be records are needed to assess local variations and to confidently reconstruct past solar activity. A comparison with sunspot and neutron records confirms that ice core 10Be reflects solar Schwabe cycle variations, and continued 10Be variability suggests cyclic solar activity throughout the Maunder and Spörer grand solar activity minima. Recent 10Be values are low; however, they do not indicate unusually high recent solar activity compared to the last 600 years. Udgivelsesdato: 2 June

AB - Despite the extensive use of 10Be as the most significant information source on past solar activity, there has been only one record (Dye-3, Greenland) providing annual resolution over several centuries. Here we report a new annual resolution 10Be record spanning the period 1389-1994 AD, measured in an ice core from the NGRIP site in Greenland. NGRIP and Dye-3 10Be exhibits similar long-term variability, although occasional short term differences between the two sites indicate that at least two high resolution 10Be records are needed to assess local variations and to confidently reconstruct past solar activity. A comparison with sunspot and neutron records confirms that ice core 10Be reflects solar Schwabe cycle variations, and continued 10Be variability suggests cyclic solar activity throughout the Maunder and Spörer grand solar activity minima. Recent 10Be values are low; however, they do not indicate unusually high recent solar activity compared to the last 600 years. Udgivelsesdato: 2 June

U2 - 10.1029/2009GL038004

DO - 10.1029/2009GL038004

M3 - Journal article

SN - 0094-8276

VL - 36

SP - L11801

JO - Geophysical Research Letters

JF - Geophysical Research Letters

ER -