Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air

A. Aldahan; G. Possnert; I. Vintersved

doi:10.1016/S0969-8043(00)00163-9

Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air

A. Aldahan, G. Possnert, I. Vintersved

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

54 Citations (Scopus)

Abstract

We present weekly ⁷Be (from 1972 to 1995), and weekly/seasonal ¹⁰Be (for 1994) data in surface air from ground level stations in Sweden with a coverage of most of the northern high latitudes (56°-68°N). Our Be data are regionally representative and reveal seasonal variation and coupling with tropospheric air mass from middle-low latitudes. The Be data also suggests a few percent, and sometimes episodic, incursion of stratospheric air mass. Frequent precipitation depletes the Be isotopes in the air, but cyclone events contribute to enrichments. A strong coherence between the ⁷Be record and short-term (monthly-seasonal) change in solar activity is observed which introduces a new mechanism for driving the amplitude of seasonal variation. Copyright (C) 2001 Elsevier Science Ltd.

Original language	English
Pages (from-to)	345-353
Number of pages	9
Journal	Applied Radiation and Isotopes
Volume	54
Issue number	2
DOIs	https://doi.org/10.1016/S0969-8043(00)00163-9
Publication status	Published - Feb 2001
Externally published	Yes

Keywords

Atmosphere
Be-isotopes
Cs-137
Solar activity
Sweden

ASJC Scopus subject areas

Radiation

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10.1016/S0969-8043(00)00163-9

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title = "Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air",

abstract = "We present weekly 7Be (from 1972 to 1995), and weekly/seasonal 10Be (for 1994) data in surface air from ground level stations in Sweden with a coverage of most of the northern high latitudes (56°-68°N). Our Be data are regionally representative and reveal seasonal variation and coupling with tropospheric air mass from middle-low latitudes. The Be data also suggests a few percent, and sometimes episodic, incursion of stratospheric air mass. Frequent precipitation depletes the Be isotopes in the air, but cyclone events contribute to enrichments. A strong coherence between the 7Be record and short-term (monthly-seasonal) change in solar activity is observed which introduces a new mechanism for driving the amplitude of seasonal variation. Copyright (C) 2001 Elsevier Science Ltd.",

keywords = "Atmosphere, Be-isotopes, Cs-137, Solar activity, Sweden",

author = "A. Aldahan and G. Possnert and I. Vintersved",

note = "Funding Information: This study was made possible through financial support from the Swedish Natural Science Research Council (NFR), the Swedish Environmental Protection Agency (NVV) and Knut and Alice Wallenberg Foundation.",

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T1 - Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air

AU - Aldahan, A.

AU - Possnert, G.

AU - Vintersved, I.

N1 - Funding Information: This study was made possible through financial support from the Swedish Natural Science Research Council (NFR), the Swedish Environmental Protection Agency (NVV) and Knut and Alice Wallenberg Foundation.

PY - 2001/2

Y1 - 2001/2

N2 - We present weekly 7Be (from 1972 to 1995), and weekly/seasonal 10Be (for 1994) data in surface air from ground level stations in Sweden with a coverage of most of the northern high latitudes (56°-68°N). Our Be data are regionally representative and reveal seasonal variation and coupling with tropospheric air mass from middle-low latitudes. The Be data also suggests a few percent, and sometimes episodic, incursion of stratospheric air mass. Frequent precipitation depletes the Be isotopes in the air, but cyclone events contribute to enrichments. A strong coherence between the 7Be record and short-term (monthly-seasonal) change in solar activity is observed which introduces a new mechanism for driving the amplitude of seasonal variation. Copyright (C) 2001 Elsevier Science Ltd.

AB - We present weekly 7Be (from 1972 to 1995), and weekly/seasonal 10Be (for 1994) data in surface air from ground level stations in Sweden with a coverage of most of the northern high latitudes (56°-68°N). Our Be data are regionally representative and reveal seasonal variation and coupling with tropospheric air mass from middle-low latitudes. The Be data also suggests a few percent, and sometimes episodic, incursion of stratospheric air mass. Frequent precipitation depletes the Be isotopes in the air, but cyclone events contribute to enrichments. A strong coherence between the 7Be record and short-term (monthly-seasonal) change in solar activity is observed which introduces a new mechanism for driving the amplitude of seasonal variation. Copyright (C) 2001 Elsevier Science Ltd.

KW - Atmosphere

KW - Be-isotopes

KW - Cs-137

KW - Solar activity

KW - Sweden

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ER -

Atmospheric interactions at northern high latitudes from weekly Be-isotopes in surface air

Abstract

Keywords

ASJC Scopus subject areas

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