Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains
Time-varying relationships between two atmospheric oscillation modes and precipitation (rainfall and snow) in the western portion of the Carpathian Mountains and the northern part of the Pannonian Plain are investigated in this paper. The Arctic Oscillation (AO) and the North Atlantic Oscillation (N...
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Earth Science Institute, Slovak Academy of Sciences, Slovakia
2023
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ftdoajarticles:oai:doaj.org/article:98d8d78b539249fe8eeda3d08eba7b02 2023-11-12T04:12:47+01:00 Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains Milan ONDERKA Jozef PECHO 2023-10-01T00:00:00Z https://doi.org/10.31577/congeo.2023.53.3.4 https://doaj.org/article/98d8d78b539249fe8eeda3d08eba7b02 EN eng Earth Science Institute, Slovak Academy of Sciences, Slovakia https://journal.geo.sav.sk/cgg/article/view/469 https://doaj.org/toc/1338-0540 1338-0540 doi:10.31577/congeo.2023.53.3.4 https://doaj.org/article/98d8d78b539249fe8eeda3d08eba7b02 Contributions to Geophysics and Geodesy, Vol 53, Iss 3, Pp 225-240 (2023) signal-to-noise ratio nao ao carpathians precipitation rainfall snowpack Geodesy QB275-343 Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.31577/congeo.2023.53.3.4 2023-10-22T00:36:02Z Time-varying relationships between two atmospheric oscillation modes and precipitation (rainfall and snow) in the western portion of the Carpathian Mountains and the northern part of the Pannonian Plain are investigated in this paper. The Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO) modes were used to explain the intra-annual variability of monthly rainfall totals and new snow over a 36-year period (1981–2017) observed at a dense network of 177 rain gauges and 33 snow rods located throughout the investigated area, respectively. The Continuous Wavelet Transform (CWT) was deployed as a band-pass filter to quantify the spectral coherence and attribution (based on signal-to-noise ratio) of the NAO and AO modes to the precipitation variability. The temporal and spatial patterns of NAO and AO-related signal variance in monthly rainfall totals and fresh snowpack were evaluated on seasonal and monthly bases. The NAO mode explained the major historically observed snow calamities, such as the snowy cold spell of January 1985 that hit central and southern Europe, bringing heavy snowfall to the investigated region and many other parts of Europe. This event was the beginning of a prolonged cold wave in Europe, with extremely low air temperatures across the continent. Our analyses showed that the AO mode appears to have only a limited effect on the overall variability of new snowpack in late winter. The attribution of NAO and AO modes to the variability of monthly rainfall totals is less pronounced compared to new snowpack. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Arctic |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
signal-to-noise ratio nao ao carpathians precipitation rainfall snowpack Geodesy QB275-343 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
signal-to-noise ratio nao ao carpathians precipitation rainfall snowpack Geodesy QB275-343 Geophysics. Cosmic physics QC801-809 Milan ONDERKA Jozef PECHO Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
topic_facet |
signal-to-noise ratio nao ao carpathians precipitation rainfall snowpack Geodesy QB275-343 Geophysics. Cosmic physics QC801-809 |
description |
Time-varying relationships between two atmospheric oscillation modes and precipitation (rainfall and snow) in the western portion of the Carpathian Mountains and the northern part of the Pannonian Plain are investigated in this paper. The Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO) modes were used to explain the intra-annual variability of monthly rainfall totals and new snow over a 36-year period (1981–2017) observed at a dense network of 177 rain gauges and 33 snow rods located throughout the investigated area, respectively. The Continuous Wavelet Transform (CWT) was deployed as a band-pass filter to quantify the spectral coherence and attribution (based on signal-to-noise ratio) of the NAO and AO modes to the precipitation variability. The temporal and spatial patterns of NAO and AO-related signal variance in monthly rainfall totals and fresh snowpack were evaluated on seasonal and monthly bases. The NAO mode explained the major historically observed snow calamities, such as the snowy cold spell of January 1985 that hit central and southern Europe, bringing heavy snowfall to the investigated region and many other parts of Europe. This event was the beginning of a prolonged cold wave in Europe, with extremely low air temperatures across the continent. Our analyses showed that the AO mode appears to have only a limited effect on the overall variability of new snowpack in late winter. The attribution of NAO and AO modes to the variability of monthly rainfall totals is less pronounced compared to new snowpack. |
format |
Article in Journal/Newspaper |
author |
Milan ONDERKA Jozef PECHO |
author_facet |
Milan ONDERKA Jozef PECHO |
author_sort |
Milan ONDERKA |
title |
Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
title_short |
Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
title_full |
Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
title_fullStr |
Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
title_full_unstemmed |
Fingerprinting the North-Atlantic and Arctic oscillation signals in rainfall and new snowpack in the western Carpathian Mountains |
title_sort |
fingerprinting the north-atlantic and arctic oscillation signals in rainfall and new snowpack in the western carpathian mountains |
publisher |
Earth Science Institute, Slovak Academy of Sciences, Slovakia |
publishDate |
2023 |
url |
https://doi.org/10.31577/congeo.2023.53.3.4 https://doaj.org/article/98d8d78b539249fe8eeda3d08eba7b02 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_source |
Contributions to Geophysics and Geodesy, Vol 53, Iss 3, Pp 225-240 (2023) |
op_relation |
https://journal.geo.sav.sk/cgg/article/view/469 https://doaj.org/toc/1338-0540 1338-0540 doi:10.31577/congeo.2023.53.3.4 https://doaj.org/article/98d8d78b539249fe8eeda3d08eba7b02 |
op_doi |
https://doi.org/10.31577/congeo.2023.53.3.4 |
_version_ |
1782331119054618624 |