Solar and meteorological influences on seasonal atmospheric 7Be in Europe for 1975 to 2018
(2021) In Chemosphere 263.- Abstract
Assessing the transport of natural radionuclides in the atmosphere provides a powerful tool to study air mass circulation. Here, we investigated the seasonal atmospheric distribution of the naturally produced 7Be in surface air over Europe between 40° N and 68° N during the period 1975–2018. The results suggest that the inter-annual variability of 7Be reflects production rates of the radionuclide induced by solar modulation of cosmic rays. Further analysis of the meteorological influences indicates that the meteorological influences on 7Be concentrations are geographically and seasonally dependent. We found that, in general, the tropopause pressure plays an important factor influencing 7Be... (More)
Assessing the transport of natural radionuclides in the atmosphere provides a powerful tool to study air mass circulation. Here, we investigated the seasonal atmospheric distribution of the naturally produced 7Be in surface air over Europe between 40° N and 68° N during the period 1975–2018. The results suggest that the inter-annual variability of 7Be reflects production rates of the radionuclide induced by solar modulation of cosmic rays. Further analysis of the meteorological influences indicates that the meteorological influences on 7Be concentrations are geographically and seasonally dependent. We found that, in general, the tropopause pressure plays an important factor influencing 7Be activity for winter and spring seasons while the sea level pressure and temperature are more dominant during summer and autumn seasons. The combination of tropospheric production rates and meteorological parameters explains 24%–79% variances of the seasonal 7Be activity. We further applied a three-box model to study the influence of stratosphere-troposphere exchanges on 7Be concentrations. The simulation supports that the seasonal cycle of 7Be in Europe is controlled by two main factors: the changing height of the troposphere (seasonality of the tropopause height) and seasonal variations of the stratosphere-troposphere exchanges.
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- author
- Zheng, Minjie LU ; Sjolte, Jesper LU ; Adolphi, Florian LU ; Aldahan, Ala ; Possnert, Göran ; Wu, Mousong and Muscheler, Raimund LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Beryllium-7, Meteorological influences, Solar modulation, Stepwise regression, Stratospheric intrusion, Three-box model
- in
- Chemosphere
- volume
- 263
- article number
- 128318
- publisher
- Elsevier
- external identifiers
-
- scopus:85091213605
- pmid:33297251
- ISSN
- 0045-6535
- DOI
- 10.1016/j.chemosphere.2020.128318
- language
- English
- LU publication?
- yes
- id
- 55c609b4-3f0a-4915-a65a-4383a15d4062
- date added to LUP
- 2020-10-21 16:58:50
- date last changed
- 2024-10-03 09:37:34
@article{55c609b4-3f0a-4915-a65a-4383a15d4062, abstract = {{<p>Assessing the transport of natural radionuclides in the atmosphere provides a powerful tool to study air mass circulation. Here, we investigated the seasonal atmospheric distribution of the naturally produced <sup>7</sup>Be in surface air over Europe between 40° N and 68° N during the period 1975–2018. The results suggest that the inter-annual variability of <sup>7</sup>Be reflects production rates of the radionuclide induced by solar modulation of cosmic rays. Further analysis of the meteorological influences indicates that the meteorological influences on <sup>7</sup>Be concentrations are geographically and seasonally dependent. We found that, in general, the tropopause pressure plays an important factor influencing <sup>7</sup>Be activity for winter and spring seasons while the sea level pressure and temperature are more dominant during summer and autumn seasons. The combination of tropospheric production rates and meteorological parameters explains 24%–79% variances of the seasonal <sup>7</sup>Be activity. We further applied a three-box model to study the influence of stratosphere-troposphere exchanges on <sup>7</sup>Be concentrations. The simulation supports that the seasonal cycle of <sup>7</sup>Be in Europe is controlled by two main factors: the changing height of the troposphere (seasonality of the tropopause height) and seasonal variations of the stratosphere-troposphere exchanges.</p>}}, author = {{Zheng, Minjie and Sjolte, Jesper and Adolphi, Florian and Aldahan, Ala and Possnert, Göran and Wu, Mousong and Muscheler, Raimund}}, issn = {{0045-6535}}, keywords = {{Beryllium-7; Meteorological influences; Solar modulation; Stepwise regression; Stratospheric intrusion; Three-box model}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Chemosphere}}, title = {{Solar and meteorological influences on seasonal atmospheric <sup>7</sup>Be in Europe for 1975 to 2018}}, url = {{http://dx.doi.org/10.1016/j.chemosphere.2020.128318}}, doi = {{10.1016/j.chemosphere.2020.128318}}, volume = {{263}}, year = {{2021}}, }