Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations
Abstract Atmospheric flow of cold air over mountain barriers in the Alpine region often gives a rise to strong and gusty downslope wind, Bora. Such flows are often accompanied by atmospheric waves, generated by the flow passing an elevated barrier. Such phenomenon can only rarely be observed visuall...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-02-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024GL112400 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850275580047523840 |
|---|---|
| author | Longlong Wang Marija Bervida Mačak Samo Stanič Luca Patruno Wenjun Dong Daru Chen |
| author_facet | Longlong Wang Marija Bervida Mačak Samo Stanič Luca Patruno Wenjun Dong Daru Chen |
| author_sort | Longlong Wang |
| collection | DOAJ |
| description | Abstract Atmospheric flow of cold air over mountain barriers in the Alpine region often gives a rise to strong and gusty downslope wind, Bora. Such flows are often accompanied by atmospheric waves, generated by the flow passing an elevated barrier. Such phenomenon can only rarely be observed visually and can generally not be reliably reproduced by simplified numerical models. Orography‐induced atmospheric small‐scale waves were experimentally observed on 25 January 2019 during a Bora outbreak in the Vipava valley, Slovenia. A vertical scanning lidar, positioned at the lee side of the Trnovski gozd mountain and a fixed direction lidar, 5 km apart in the Vipava valley, were used to characterize the density field. The flow exhibited a stationary jump after the mountain ridge and, superimposed, an oscillatory flow pattern. High‐resolution numerical simulations complemented the observations and supported experimental results on the flow periodicity but also on the wave structures and propagation characteristics. |
| format | Article |
| id | doaj-art-b71bc39ddc0b405db5a9ff6cf5f1e0d8 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-b71bc39ddc0b405db5a9ff6cf5f1e0d82025-08-20T01:50:41ZengWileyGeophysical Research Letters0094-82761944-80072025-02-01524n/an/a10.1029/2024GL112400Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical SimulationsLonglong Wang0Marija Bervida Mačak1Samo Stanič2Luca Patruno3Wenjun Dong4Daru Chen5Hangzhou Institute of Advanced Studies Zhejiang Normal University Hangzhou ChinaCenter for Atmospheric Research University of Nova Gorica Nova Gorica SloveniaCenter for Atmospheric Research University of Nova Gorica Nova Gorica SloveniaDICAM, University of Bologna Bologna ItalyCenter for Space and Atmospheric Research (CSAR), Department of Physical Sciences Embry‐Riddle Aeronautical University Daytona Beach FL USAHangzhou Institute of Advanced Studies Zhejiang Normal University Hangzhou ChinaAbstract Atmospheric flow of cold air over mountain barriers in the Alpine region often gives a rise to strong and gusty downslope wind, Bora. Such flows are often accompanied by atmospheric waves, generated by the flow passing an elevated barrier. Such phenomenon can only rarely be observed visually and can generally not be reliably reproduced by simplified numerical models. Orography‐induced atmospheric small‐scale waves were experimentally observed on 25 January 2019 during a Bora outbreak in the Vipava valley, Slovenia. A vertical scanning lidar, positioned at the lee side of the Trnovski gozd mountain and a fixed direction lidar, 5 km apart in the Vipava valley, were used to characterize the density field. The flow exhibited a stationary jump after the mountain ridge and, superimposed, an oscillatory flow pattern. High‐resolution numerical simulations complemented the observations and supported experimental results on the flow periodicity but also on the wave structures and propagation characteristics.https://doi.org/10.1029/2024GL112400orography‐induced atmospheric wavesBoralidar observationsnumerical simulations |
| spellingShingle | Longlong Wang Marija Bervida Mačak Samo Stanič Luca Patruno Wenjun Dong Daru Chen Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations Geophysical Research Letters orography‐induced atmospheric waves Bora lidar observations numerical simulations |
| title | Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations |
| title_full | Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations |
| title_fullStr | Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations |
| title_full_unstemmed | Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations |
| title_short | Orography‐Induced Atmospheric Small‐Scale Waves During Bora Using Lidar Observations and Numerical Simulations |
| title_sort | orography induced atmospheric small scale waves during bora using lidar observations and numerical simulations |
| topic | orography‐induced atmospheric waves Bora lidar observations numerical simulations |
| url | https://doi.org/10.1029/2024GL112400 |
| work_keys_str_mv | AT longlongwang orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations AT marijabervidamacak orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations AT samostanic orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations AT lucapatruno orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations AT wenjundong orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations AT daruchen orographyinducedatmosphericsmallscalewavesduringborausinglidarobservationsandnumericalsimulations |