Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS
In 2014/2015 a one-year field campaign at the Tiksi observatory in the Laptev Sea area was carried out using Sound Detection and Ranging/Radio Acoustic Sounding System (SODAR/RASS) measurements to investigate the atmospheric boundary layer (ABL) with a focus on low-level jets (LLJ) during the winter...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/8/1421 |
| _version_ | 1797538538279927808 |
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| author | Günther Heinemann Clemens Drüe Pascal Schwarz Alexander Makshtas |
| author_facet | Günther Heinemann Clemens Drüe Pascal Schwarz Alexander Makshtas |
| author_sort | Günther Heinemann |
| collection | DOAJ |
| description | In 2014/2015 a one-year field campaign at the Tiksi observatory in the Laptev Sea area was carried out using Sound Detection and Ranging/Radio Acoustic Sounding System (SODAR/RASS) measurements to investigate the atmospheric boundary layer (ABL) with a focus on low-level jets (LLJ) during the winter season. In addition to SODAR/RASS-derived vertical profiles of temperature, wind speed and direction, a suite of complementary measurements at the Tiksi observatory was available. Data of a regional atmospheric model were used to put the local data into the synoptic context. Two case studies of LLJ events are presented. The statistics of LLJs for six months show that in about 23% of all profiles LLJs were present with a mean jet speed and height of about 7 m/s and 240 m, respectively. In 3.4% of all profiles LLJs exceeding 10 m/s occurred. The main driving mechanism for LLJs seems to be the baroclinicity, since no inertial oscillations were found. LLJs with heights below 200 m are likely influenced by local topography. |
| first_indexed | 2024-03-10T12:32:51Z |
| format | Article |
| id | doaj.art-677ff7024dc341efb0cc2778fdee3664 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T12:32:51Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-677ff7024dc341efb0cc2778fdee36642023-11-21T14:31:39ZengMDPI AGRemote Sensing2072-42922021-04-01138142110.3390/rs13081421Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASSGünther Heinemann0Clemens Drüe1Pascal Schwarz2Alexander Makshtas3Department of Environmental Meteorology, University of Trier, 54286 Trier, GermanyDepartment of Environmental Meteorology, University of Trier, 54286 Trier, GermanyMENTZ GmbH, 81675 München, GermanyArctic and Antarctic Research Institute (AARI), Air-Sea Interaction Department, 199397 St-Petersburg, RussiaIn 2014/2015 a one-year field campaign at the Tiksi observatory in the Laptev Sea area was carried out using Sound Detection and Ranging/Radio Acoustic Sounding System (SODAR/RASS) measurements to investigate the atmospheric boundary layer (ABL) with a focus on low-level jets (LLJ) during the winter season. In addition to SODAR/RASS-derived vertical profiles of temperature, wind speed and direction, a suite of complementary measurements at the Tiksi observatory was available. Data of a regional atmospheric model were used to put the local data into the synoptic context. Two case studies of LLJ events are presented. The statistics of LLJs for six months show that in about 23% of all profiles LLJs were present with a mean jet speed and height of about 7 m/s and 240 m, respectively. In 3.4% of all profiles LLJs exceeding 10 m/s occurred. The main driving mechanism for LLJs seems to be the baroclinicity, since no inertial oscillations were found. LLJs with heights below 200 m are likely influenced by local topography.https://www.mdpi.com/2072-4292/13/8/1421low-level jetsSODAR/RASSatmospheric boundary layerLaptev Sea |
| spellingShingle | Günther Heinemann Clemens Drüe Pascal Schwarz Alexander Makshtas Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS Remote Sensing low-level jets SODAR/RASS atmospheric boundary layer Laptev Sea |
| title | Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS |
| title_full | Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS |
| title_fullStr | Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS |
| title_full_unstemmed | Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS |
| title_short | Observations of Wintertime Low-Level Jets in the Coastal Region of the Laptev Sea in the Siberian Arctic Using SODAR/RASS |
| title_sort | observations of wintertime low level jets in the coastal region of the laptev sea in the siberian arctic using sodar rass |
| topic | low-level jets SODAR/RASS atmospheric boundary layer Laptev Sea |
| url | https://www.mdpi.com/2072-4292/13/8/1421 |
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