A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP
Measurements of the atmospheric boundary layer (ABL) structure were performed for three years (October 2017–August 2020) at the Russian observatory “Ice Base Cape Baranova” (79.280° N, 101.620° E) using SODAR (Sound Detection And Ranging). These measurements were part of the YOPP (Year of Polar Pred...
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2022
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ftdoajarticles:oai:doaj.org/article:cb946a0e1a7247a49e8872631f42003d 2023-05-15T15:19:13+02:00 A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP Günther Heinemann Clemens Drüe Alexander Makshtas 2022-06-01T00:00:00Z https://doi.org/10.3390/atmos13060957 https://doaj.org/article/cb946a0e1a7247a49e8872631f42003d EN eng MDPI AG https://www.mdpi.com/2073-4433/13/6/957 https://doaj.org/toc/2073-4433 doi:10.3390/atmos13060957 2073-4433 https://doaj.org/article/cb946a0e1a7247a49e8872631f42003d Atmosphere, Vol 13, Iss 957, p 957 (2022) low-level jets SODAR atmospheric boundary layer topographic flow atmospheric modeling Laptev Sea Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.3390/atmos13060957 2022-12-31T03:10:06Z Measurements of the atmospheric boundary layer (ABL) structure were performed for three years (October 2017–August 2020) at the Russian observatory “Ice Base Cape Baranova” (79.280° N, 101.620° E) using SODAR (Sound Detection And Ranging). These measurements were part of the YOPP (Year of Polar Prediction) project “Boundary layer measurements in the high Arctic” (CATS_BL) within the scope of a joint German–Russian project. In addition to SODAR-derived vertical profiles of wind speed and direction, a suite of complementary measurements at the observatory was available. ABL measurements were used for verification of the regional climate model COSMO-CLM (CCLM) with a 5 km resolution for 2017–2020. The CCLM was run with nesting in ERA5 data in a forecast mode for the measurement period. SODAR measurements were mostly limited to wind speeds <12 m/s since the signal was often lost for higher winds. The SODAR data showed a topographical channeling effect for the wind field in the lowest 100 m and some low-level jets (LLJs). The verification of the CCLM with near-surface data of the observatory showed good agreement for the wind and a negative bias for the 2 m temperature. The comparison with SODAR data showed a positive bias for the wind speed of about 1 m/s below 100 m, which increased to 1.5 m/s for higher levels. In contrast to the SODAR data, the CCLM data showed the frequent presence of LLJs associated with the topographic channeling in Shokalsky Strait. Although SODAR wind profiles are limited in range and have a lot of gaps, they represent a valuable data set for model verification. However, a full picture of the ABL structure and the climatology of channeling events could be obtained only with the model data. The climatological evaluation showed that the wind field at Cape Baranova was not only influenced by direct topographic channeling under conditions of southerly winds through the Shokalsky Strait but also by channeling through a mountain gap for westerly winds. LLJs were detected in 37% of all profiles ... Article in Journal/Newspaper Arctic laptev Laptev Sea Severnaya Zemlya Siberia Directory of Open Access Journals: DOAJ Articles Arctic Laptev Sea Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Baranova ENVELOPE(159.744,159.744,53.931,53.931) Atmosphere 13 6 957 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
low-level jets SODAR atmospheric boundary layer topographic flow atmospheric modeling Laptev Sea Meteorology. Climatology QC851-999 |
spellingShingle |
low-level jets SODAR atmospheric boundary layer topographic flow atmospheric modeling Laptev Sea Meteorology. Climatology QC851-999 Günther Heinemann Clemens Drüe Alexander Makshtas A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
topic_facet |
low-level jets SODAR atmospheric boundary layer topographic flow atmospheric modeling Laptev Sea Meteorology. Climatology QC851-999 |
description |
Measurements of the atmospheric boundary layer (ABL) structure were performed for three years (October 2017–August 2020) at the Russian observatory “Ice Base Cape Baranova” (79.280° N, 101.620° E) using SODAR (Sound Detection And Ranging). These measurements were part of the YOPP (Year of Polar Prediction) project “Boundary layer measurements in the high Arctic” (CATS_BL) within the scope of a joint German–Russian project. In addition to SODAR-derived vertical profiles of wind speed and direction, a suite of complementary measurements at the observatory was available. ABL measurements were used for verification of the regional climate model COSMO-CLM (CCLM) with a 5 km resolution for 2017–2020. The CCLM was run with nesting in ERA5 data in a forecast mode for the measurement period. SODAR measurements were mostly limited to wind speeds <12 m/s since the signal was often lost for higher winds. The SODAR data showed a topographical channeling effect for the wind field in the lowest 100 m and some low-level jets (LLJs). The verification of the CCLM with near-surface data of the observatory showed good agreement for the wind and a negative bias for the 2 m temperature. The comparison with SODAR data showed a positive bias for the wind speed of about 1 m/s below 100 m, which increased to 1.5 m/s for higher levels. In contrast to the SODAR data, the CCLM data showed the frequent presence of LLJs associated with the topographic channeling in Shokalsky Strait. Although SODAR wind profiles are limited in range and have a lot of gaps, they represent a valuable data set for model verification. However, a full picture of the ABL structure and the climatology of channeling events could be obtained only with the model data. The climatological evaluation showed that the wind field at Cape Baranova was not only influenced by direct topographic channeling under conditions of southerly winds through the Shokalsky Strait but also by channeling through a mountain gap for westerly winds. LLJs were detected in 37% of all profiles ... |
format |
Article in Journal/Newspaper |
author |
Günther Heinemann Clemens Drüe Alexander Makshtas |
author_facet |
Günther Heinemann Clemens Drüe Alexander Makshtas |
author_sort |
Günther Heinemann |
title |
A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
title_short |
A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
title_full |
A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
title_fullStr |
A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
title_full_unstemmed |
A Three-Year Climatology of the Wind Field Structure at Cape Baranova (Severnaya Zemlya, Siberia) from SODAR Observations and High-Resolution Regional Climate Model Simulations during YOPP |
title_sort |
three-year climatology of the wind field structure at cape baranova (severnaya zemlya, siberia) from sodar observations and high-resolution regional climate model simulations during yopp |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13060957 https://doaj.org/article/cb946a0e1a7247a49e8872631f42003d |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(159.744,159.744,53.931,53.931) |
geographic |
Arctic Laptev Sea Severnaya Zemlya Baranova |
geographic_facet |
Arctic Laptev Sea Severnaya Zemlya Baranova |
genre |
Arctic laptev Laptev Sea Severnaya Zemlya Siberia |
genre_facet |
Arctic laptev Laptev Sea Severnaya Zemlya Siberia |
op_source |
Atmosphere, Vol 13, Iss 957, p 957 (2022) |
op_relation |
https://www.mdpi.com/2073-4433/13/6/957 https://doaj.org/toc/2073-4433 doi:10.3390/atmos13060957 2073-4433 https://doaj.org/article/cb946a0e1a7247a49e8872631f42003d |
op_doi |
https://doi.org/10.3390/atmos13060957 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
6 |
container_start_page |
957 |
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1766349399694245888 |