Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis
The sparse observational network over the Arctic region makes severe storms such as polar lows (PLs) still hard to predict. To improve their forecasting and detection, it is of great importance to gain better understanding of their formation and development. Therefore, we have analyzed the environme...
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ftdoajarticles:oai:doaj.org/article:e6dc53532e984f4690b94f763f7cb783 2023-05-15T14:53:40+02:00 Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis Ana Radovan Susanne Crewell Erlend Moster Knudsen Annette Rinke 2019-01-01T00:00:00Z https://doi.org/10.1080/16000870.2019.1618131 https://doaj.org/article/e6dc53532e984f4690b94f763f7cb783 EN eng Stockholm University Press http://dx.doi.org/10.1080/16000870.2019.1618131 https://doaj.org/toc/1600-0870 1600-0870 doi:10.1080/16000870.2019.1618131 https://doaj.org/article/e6dc53532e984f4690b94f763f7cb783 Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 71, Iss 1 (2019) mesoscale cyclone polar low formation/ development environmental conditions Oceanography GC1-1581 Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.1080/16000870.2019.1618131 2022-12-31T02:13:24Z The sparse observational network over the Arctic region makes severe storms such as polar lows (PLs) still hard to predict. To improve their forecasting and detection, it is of great importance to gain better understanding of their formation and development. Therefore, we have analyzed the environment of PLs at their genesis and mature stages using a set of parameters: the difference between sea surface and 500 hPa temperature (or at 2 m height), lapse rate (LR) and relative humidity below 850 hPa (RH), near-surface wind speed and geopotential height anomaly. We evaluate which of these conditions (or which combination) is(are) the most favourable for PL formation and persistence. The analysis was performed on 33 January cases over 12 years (2000–2011) using the Arctic System Reanalysis. The results showed that, for the cases with lower thermal instability during formation stage, LRs throughout the boundary layer were stronger and steeper; therefore, these PLs were fostering convective development. However, for few cases, it was noted that when convection decreased simultaneously with increased thermal stability, RH most of the times was above 90%. It was also noted that the higher amount of RH at lower levels during genesis stage promoted stronger winds at the maturity stage. Article in Journal/Newspaper Arctic Nordic Seas Directory of Open Access Journals: DOAJ Articles Arctic Tellus A: Dynamic Meteorology and Oceanography 71 1 1618131 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
mesoscale cyclone polar low formation/ development environmental conditions Oceanography GC1-1581 Meteorology. Climatology QC851-999 |
spellingShingle |
mesoscale cyclone polar low formation/ development environmental conditions Oceanography GC1-1581 Meteorology. Climatology QC851-999 Ana Radovan Susanne Crewell Erlend Moster Knudsen Annette Rinke Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
topic_facet |
mesoscale cyclone polar low formation/ development environmental conditions Oceanography GC1-1581 Meteorology. Climatology QC851-999 |
description |
The sparse observational network over the Arctic region makes severe storms such as polar lows (PLs) still hard to predict. To improve their forecasting and detection, it is of great importance to gain better understanding of their formation and development. Therefore, we have analyzed the environment of PLs at their genesis and mature stages using a set of parameters: the difference between sea surface and 500 hPa temperature (or at 2 m height), lapse rate (LR) and relative humidity below 850 hPa (RH), near-surface wind speed and geopotential height anomaly. We evaluate which of these conditions (or which combination) is(are) the most favourable for PL formation and persistence. The analysis was performed on 33 January cases over 12 years (2000–2011) using the Arctic System Reanalysis. The results showed that, for the cases with lower thermal instability during formation stage, LRs throughout the boundary layer were stronger and steeper; therefore, these PLs were fostering convective development. However, for few cases, it was noted that when convection decreased simultaneously with increased thermal stability, RH most of the times was above 90%. It was also noted that the higher amount of RH at lower levels during genesis stage promoted stronger winds at the maturity stage. |
format |
Article in Journal/Newspaper |
author |
Ana Radovan Susanne Crewell Erlend Moster Knudsen Annette Rinke |
author_facet |
Ana Radovan Susanne Crewell Erlend Moster Knudsen Annette Rinke |
author_sort |
Ana Radovan |
title |
Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
title_short |
Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
title_full |
Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
title_fullStr |
Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
title_full_unstemmed |
Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis |
title_sort |
environmental conditions for polar low formation and development over the nordic seas: study of january cases based on the arctic system reanalysis |
publisher |
Stockholm University Press |
publishDate |
2019 |
url |
https://doi.org/10.1080/16000870.2019.1618131 https://doaj.org/article/e6dc53532e984f4690b94f763f7cb783 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Nordic Seas |
genre_facet |
Arctic Nordic Seas |
op_source |
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 71, Iss 1 (2019) |
op_relation |
http://dx.doi.org/10.1080/16000870.2019.1618131 https://doaj.org/toc/1600-0870 1600-0870 doi:10.1080/16000870.2019.1618131 https://doaj.org/article/e6dc53532e984f4690b94f763f7cb783 |
op_doi |
https://doi.org/10.1080/16000870.2019.1618131 |
container_title |
Tellus A: Dynamic Meteorology and Oceanography |
container_volume |
71 |
container_issue |
1 |
container_start_page |
1618131 |
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1766325261873184768 |