A case study of observed and modeled barrier flow in the Denmark Strait in May 2015
Mesoscale barrier jets in the Denmark Strait are common in winter months and have the capability to influence open ocean convection. This paper presents the first detailed observational study of a summertime (21 May 2015) barrier wind event in the Denmark Strait using dropsondes and observations fro...
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ftncar:oai:drupal-site.org:articles_19833 2023-09-05T13:19:03+02:00 A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 DuVivier, Alice K. (author) Cassano, John J. (author) Greco, Steven (author) Emmitt, G. David (author) 2017-06 https://doi.org/10.1175/MWR-D-16-0386.1 en eng Monthly Weather Review--Mon. Wea. Rev.--0027-0644--1520-0493 articles:19833 ark:/85065/d7cn7624 doi:10.1175/MWR-D-16-0386.1 Copyright 2017 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. article Text 2017 ftncar https://doi.org/10.1175/MWR-D-16-0386.1 2023-08-14T18:47:24Z Mesoscale barrier jets in the Denmark Strait are common in winter months and have the capability to influence open ocean convection. This paper presents the first detailed observational study of a summertime (21 May 2015) barrier wind event in the Denmark Strait using dropsondes and observations from an airborne Doppler wind lidar (DWL). The DWL profiles agree well with dropsonde observations and show a vertically narrow (similar to 250-400 m) barrier jet of 23-28ms(-1) near the Greenland coast that broadens (similar to 300-1000 m) and strengthens farther off coast. In addition, otherwise identical regional high-resolution Weather Research and Forecasting (WRF) Model simulations of the event are analyzed at four horizontal grid spacings (5, 10, 25, and 50 km), two vertical resolutions (40 and 60 levels), and two planetary boundary layer (PBL) parameterizations [Mellor-Yamada-Nakanishi-Niino, version 2.5 (MYNN2.5) and University of Washington (UW)] to determine what model configurations best simulate the observed jet structure. Comparison of the WRF simulations with wind observations from satellites, dropsondes, and the airborne DWL scans indicate that the combination of both high horizontal resolution (5 km) and vertical resolution (60 levels) best captures observed barrier jet structure and speeds as well as the observed cloud field, including some convective clouds. Both WRF PBL schemes produced reasonable barrier jets with the UW scheme slightly outperforming the MYNN2.5 scheme. However, further investigation at high horizontal and vertical resolution is needed to determine the impact of the WRF PBL scheme on surface energy budget terms, particularly in the high-latitude maritime environment around Greenland. Article in Journal/Newspaper Denmark Strait Greenland OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Greenland Mellor ENVELOPE(-114.944,-114.944,60.714,60.714) Monthly Weather Review 145 6 2385 2404 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Mesoscale barrier jets in the Denmark Strait are common in winter months and have the capability to influence open ocean convection. This paper presents the first detailed observational study of a summertime (21 May 2015) barrier wind event in the Denmark Strait using dropsondes and observations from an airborne Doppler wind lidar (DWL). The DWL profiles agree well with dropsonde observations and show a vertically narrow (similar to 250-400 m) barrier jet of 23-28ms(-1) near the Greenland coast that broadens (similar to 300-1000 m) and strengthens farther off coast. In addition, otherwise identical regional high-resolution Weather Research and Forecasting (WRF) Model simulations of the event are analyzed at four horizontal grid spacings (5, 10, 25, and 50 km), two vertical resolutions (40 and 60 levels), and two planetary boundary layer (PBL) parameterizations [Mellor-Yamada-Nakanishi-Niino, version 2.5 (MYNN2.5) and University of Washington (UW)] to determine what model configurations best simulate the observed jet structure. Comparison of the WRF simulations with wind observations from satellites, dropsondes, and the airborne DWL scans indicate that the combination of both high horizontal resolution (5 km) and vertical resolution (60 levels) best captures observed barrier jet structure and speeds as well as the observed cloud field, including some convective clouds. Both WRF PBL schemes produced reasonable barrier jets with the UW scheme slightly outperforming the MYNN2.5 scheme. However, further investigation at high horizontal and vertical resolution is needed to determine the impact of the WRF PBL scheme on surface energy budget terms, particularly in the high-latitude maritime environment around Greenland. |
author2 |
DuVivier, Alice K. (author) Cassano, John J. (author) Greco, Steven (author) Emmitt, G. David (author) |
format |
Article in Journal/Newspaper |
title |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
spellingShingle |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
title_short |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
title_full |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
title_fullStr |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
title_full_unstemmed |
A case study of observed and modeled barrier flow in the Denmark Strait in May 2015 |
title_sort |
case study of observed and modeled barrier flow in the denmark strait in may 2015 |
publishDate |
2017 |
url |
https://doi.org/10.1175/MWR-D-16-0386.1 |
long_lat |
ENVELOPE(-114.944,-114.944,60.714,60.714) |
geographic |
Greenland Mellor |
geographic_facet |
Greenland Mellor |
genre |
Denmark Strait Greenland |
genre_facet |
Denmark Strait Greenland |
op_relation |
Monthly Weather Review--Mon. Wea. Rev.--0027-0644--1520-0493 articles:19833 ark:/85065/d7cn7624 doi:10.1175/MWR-D-16-0386.1 |
op_rights |
Copyright 2017 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. |
op_doi |
https://doi.org/10.1175/MWR-D-16-0386.1 |
container_title |
Monthly Weather Review |
container_volume |
145 |
container_issue |
6 |
container_start_page |
2385 |
op_container_end_page |
2404 |
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1776199869401137152 |