Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components
The Arctic region shows some of the world's most significant signs of climate change; for instance, a negative trend in summer sea‐ice cover of around 15% per decade and Arctic amplified surface‐air warming that is three times the global average. The atmospheric energy transport plays an import...
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Online Access: | https://hdl.handle.net/10037/20229 https://doi.org/10.1002/qj.3813 |
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ftunivtroemsoe:oai:munin.uit.no:10037/20229 2023-05-15T14:25:11+02:00 Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components Heiskanen, Tuomas Ilkka Henrikki Graversen, Rune Grand Rydsaa, Johanne Hope Isachsen, Pål Erik 2020-05-04 https://hdl.handle.net/10037/20229 https://doi.org/10.1002/qj.3813 eng eng Wiley Heiskanen, T.I.H. (2022). On the linkage between atmospheric circulation changes and Arctic climate change. (Doctoral thesis). https://hdl.handle.net/10037/25297 Quarterly Journal of the Royal Meteorological Society Notur/NorStore: nn9384k Notur/NorStore: ns9063k Norges forskningsråd: 280727 info:eu-repo/grantAgreement/RCN/KLIMAFORSK/280727/Norway/The role of the atmospheric energy transport in recent Arctic climate change// Heiskanen, Graversen, Rydsaa, Isachsen. Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components. Quarterly Journal of the Royal Meteorological Society. 2020 FRIDAID 1813979 doi:10.1002/qj.3813 0035-9009 1477-870X https://hdl.handle.net/10037/20229 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1002/qj.3813 2022-06-01T22:58:57Z The Arctic region shows some of the world's most significant signs of climate change; for instance, a negative trend in summer sea‐ice cover of around 15% per decade and Arctic amplified surface‐air warming that is three times the global average. The atmospheric energy transport plays an important role in the Arctic climate. Recently a Fourier‐based method for studying the atmospheric energy transport contribution by planetary‐ and synoptic‐scale waves has been proposed. Recent studies based on this method show that planetary waves contribute more than synoptic waves to the atmospheric energy transport into the Arctic. However, this Fourier method suffers from being incapable of resolving spatially localized systems such as cyclones. Here an attempt to evaluate this problem is presented by applying the method on synthetic and reanalysis data. In addition, an alternative method based on a wavelet decomposition is proposed and compared with the Fourier‐based method. The wavelet method is based on localized basis functions which should be capable of resolving these localized systems. The wavelet method shows an impact of synoptic‐scale transport on Arctic temperatures which is not captured by the Fourier method, whilst the planetary‐scale effect of both methods appears similar. Article in Journal/Newspaper Arctic Arctic Climate change Sea ice University of Tromsø: Munin Open Research Archive Arctic Quarterly Journal of the Royal Meteorological Society 146 731 2717 2730 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
spellingShingle |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Heiskanen, Tuomas Ilkka Henrikki Graversen, Rune Grand Rydsaa, Johanne Hope Isachsen, Pål Erik Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
topic_facet |
VDP::Mathematics and natural science: 400::Physics: 430 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
description |
The Arctic region shows some of the world's most significant signs of climate change; for instance, a negative trend in summer sea‐ice cover of around 15% per decade and Arctic amplified surface‐air warming that is three times the global average. The atmospheric energy transport plays an important role in the Arctic climate. Recently a Fourier‐based method for studying the atmospheric energy transport contribution by planetary‐ and synoptic‐scale waves has been proposed. Recent studies based on this method show that planetary waves contribute more than synoptic waves to the atmospheric energy transport into the Arctic. However, this Fourier method suffers from being incapable of resolving spatially localized systems such as cyclones. Here an attempt to evaluate this problem is presented by applying the method on synthetic and reanalysis data. In addition, an alternative method based on a wavelet decomposition is proposed and compared with the Fourier‐based method. The wavelet method is based on localized basis functions which should be capable of resolving these localized systems. The wavelet method shows an impact of synoptic‐scale transport on Arctic temperatures which is not captured by the Fourier method, whilst the planetary‐scale effect of both methods appears similar. |
format |
Article in Journal/Newspaper |
author |
Heiskanen, Tuomas Ilkka Henrikki Graversen, Rune Grand Rydsaa, Johanne Hope Isachsen, Pål Erik |
author_facet |
Heiskanen, Tuomas Ilkka Henrikki Graversen, Rune Grand Rydsaa, Johanne Hope Isachsen, Pål Erik |
author_sort |
Heiskanen, Tuomas Ilkka Henrikki |
title |
Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
title_short |
Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
title_full |
Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
title_fullStr |
Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
title_full_unstemmed |
Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
title_sort |
comparing wavelet and fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/20229 https://doi.org/10.1002/qj.3813 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change Sea ice |
genre_facet |
Arctic Arctic Climate change Sea ice |
op_relation |
Heiskanen, T.I.H. (2022). On the linkage between atmospheric circulation changes and Arctic climate change. (Doctoral thesis). https://hdl.handle.net/10037/25297 Quarterly Journal of the Royal Meteorological Society Notur/NorStore: nn9384k Notur/NorStore: ns9063k Norges forskningsråd: 280727 info:eu-repo/grantAgreement/RCN/KLIMAFORSK/280727/Norway/The role of the atmospheric energy transport in recent Arctic climate change// Heiskanen, Graversen, Rydsaa, Isachsen. Comparing wavelet and Fourier perspectives on the decomposition of meridional energy transport into synoptic and planetary components. Quarterly Journal of the Royal Meteorological Society. 2020 FRIDAID 1813979 doi:10.1002/qj.3813 0035-9009 1477-870X https://hdl.handle.net/10037/20229 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1002/qj.3813 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
146 |
container_issue |
731 |
container_start_page |
2717 |
op_container_end_page |
2730 |
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1766297601592786944 |