(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment
ABSTRACT: During the Greenland Flow Distortion experiment, barrier flow was observed by an instrumented aircraft on 1, 2, 5 and 6 March 2007 off southeastern Greenland. During this time period the barrier flow increased from a narrow jet, ∼15 m s−1, to a jet filling almost the whole of the Denmark S...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.666.3462 http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.666.3462 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.666.3462 2023-05-15T16:00:38+02:00 (www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment G. N. Petersen A I. A. Renfrewa G. W. K. Mooreb The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.666.3462 http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.666.3462 http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf KEY WORDS Greenland Flow Distortion experiment Barrier flow FAAM observations orographic flow MetUM text ftciteseerx 2016-01-08T17:06:52Z ABSTRACT: During the Greenland Flow Distortion experiment, barrier flow was observed by an instrumented aircraft on 1, 2, 5 and 6 March 2007 off southeastern Greenland. During this time period the barrier flow increased from a narrow jet, ∼15 m s−1, to a jet filling almost the whole of the Denmark Strait with maximum wind speed exceeding 40 m s−1. Dropsonde observations show that the barrier flow was capped by a sharp temperature inversion below mountain height. Below the inversion was a cold and dry jet, with a larger northerly wind component than that of the flow above, which was also warmer and more moist. Thus, the observations indicate two air masses below mountain height: a cold and dry barrier jet of northern origin and, above this, a warmer and moister air mass that was of cyclonic origin. Numerical simulations emphasize the non-stationarity of the Greenland barrier flow and its dependence on the synoptic situation in the Greenland–Iceland region. They show that the barrier jet originated north of the Denmark Strait and was drawn southward by a synoptic-scale cyclone, with the strength and location of the maximum winds highly dependent on the location of the cyclone relative to the orography of Greenland. Experiments without Greenland’s orography suggest a ∼20 m s−1 enhancement of the low-level peak wind speeds due to the presence of the barrier. Thus, the Greenland barrier flows are not classic geostrophically balanced barrier flows but have a significant ageostrophic component and are precisely controlled by synoptic-scale systems. Copyright c © 2009 Royal Meteorological Society Text Denmark Strait Greenland Iceland Unknown Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
KEY WORDS Greenland Flow Distortion experiment Barrier flow FAAM observations orographic flow MetUM |
spellingShingle |
KEY WORDS Greenland Flow Distortion experiment Barrier flow FAAM observations orographic flow MetUM G. N. Petersen A I. A. Renfrewa G. W. K. Mooreb (www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
topic_facet |
KEY WORDS Greenland Flow Distortion experiment Barrier flow FAAM observations orographic flow MetUM |
description |
ABSTRACT: During the Greenland Flow Distortion experiment, barrier flow was observed by an instrumented aircraft on 1, 2, 5 and 6 March 2007 off southeastern Greenland. During this time period the barrier flow increased from a narrow jet, ∼15 m s−1, to a jet filling almost the whole of the Denmark Strait with maximum wind speed exceeding 40 m s−1. Dropsonde observations show that the barrier flow was capped by a sharp temperature inversion below mountain height. Below the inversion was a cold and dry jet, with a larger northerly wind component than that of the flow above, which was also warmer and more moist. Thus, the observations indicate two air masses below mountain height: a cold and dry barrier jet of northern origin and, above this, a warmer and moister air mass that was of cyclonic origin. Numerical simulations emphasize the non-stationarity of the Greenland barrier flow and its dependence on the synoptic situation in the Greenland–Iceland region. They show that the barrier jet originated north of the Denmark Strait and was drawn southward by a synoptic-scale cyclone, with the strength and location of the maximum winds highly dependent on the location of the cyclone relative to the orography of Greenland. Experiments without Greenland’s orography suggest a ∼20 m s−1 enhancement of the low-level peak wind speeds due to the presence of the barrier. Thus, the Greenland barrier flows are not classic geostrophically balanced barrier flows but have a significant ageostrophic component and are precisely controlled by synoptic-scale systems. Copyright c © 2009 Royal Meteorological Society |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
G. N. Petersen A I. A. Renfrewa G. W. K. Mooreb |
author_facet |
G. N. Petersen A I. A. Renfrewa G. W. K. Mooreb |
author_sort |
G. N. Petersen |
title |
(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
title_short |
(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
title_full |
(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
title_fullStr |
(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
title_full_unstemmed |
(www.interscience.wiley.com) DOI:10.1002/qj.455 An overview of barrier winds off southeastern Greenland during the Greenland Flow Distortion experiment |
title_sort |
(www.interscience.wiley.com) doi:10.1002/qj.455 an overview of barrier winds off southeastern greenland during the greenland flow distortion experiment |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.666.3462 http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Denmark Strait Greenland Iceland |
genre_facet |
Denmark Strait Greenland Iceland |
op_source |
http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.666.3462 http://www.uea.ac.uk/%7Ee046/reprints/petersen_etal_barrier_flows_QJRMS_2009.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766396639383126016 |