Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis
Abstract Three temporary Automatic Weather Stations measured summertime surface layer climate over the Darwin–Hatherton Glacial system. These data were used to test a Polar optimized Weather Research and Forecasting model (Polar-WRF) simulation for December as a case study. Observations show differe...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102010000817 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000817 |
id |
crcambridgeupr:10.1017/s0954102010000817 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102010000817 2024-03-03T08:38:42+00:00 Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis Zawar-Reza, Peyman George, Steve Storey, Bryan Lawson, Wendy 2010 http://dx.doi.org/10.1017/s0954102010000817 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000817 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 22, issue 6, page 619-632 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2010 crcambridgeupr https://doi.org/10.1017/s0954102010000817 2024-02-08T08:45:45Z Abstract Three temporary Automatic Weather Stations measured summertime surface layer climate over the Darwin–Hatherton Glacial system. These data were used to test a Polar optimized Weather Research and Forecasting model (Polar-WRF) simulation for December as a case study. Observations show differences in hourly averaged solar and net all-wave radiation between white ice and blue ice areas (BIAs). Although the down-welling solar radiation is higher over the white ice region, the net all-wave energy is higher over the BIA. Derived albedo for each surface type confirms that the blue ice areas have lower albedo. Also, the hourly averaged temperatures are higher at lower elevation stations, creating a gradient towards the Ross Ice Shelf. Analysis shows that there is a diurnal oscillation in strength and intensity of the katabatic wind. The two lower stations register a distinct reversal of wind direction in the early afternoon due to intrusion of an anabatic circulation. Anabatic winds are not prevalent further up the Darwin Glacier. A high-resolution Polar-WRF simulation as a case study shows good agreement with observations. The December 2008 case study is characterized by a strong south-westerly katabatic wind over Hatherton, whereas the flow over Lower Darwin was diurnally reversing. Polar-WRF shows that the katabatic front advanced and retreated periodically between Hatherton and Lower Darwin. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Darwin Glacier Ice Shelf Ross Ice Shelf Cambridge University Press Ross Ice Shelf Bia ENVELOPE(22.891,22.891,70.317,70.317) Darwin Glacier ENVELOPE(159.000,159.000,-79.883,-79.883) Antarctic Science 22 6 619 632 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Zawar-Reza, Peyman George, Steve Storey, Bryan Lawson, Wendy Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Three temporary Automatic Weather Stations measured summertime surface layer climate over the Darwin–Hatherton Glacial system. These data were used to test a Polar optimized Weather Research and Forecasting model (Polar-WRF) simulation for December as a case study. Observations show differences in hourly averaged solar and net all-wave radiation between white ice and blue ice areas (BIAs). Although the down-welling solar radiation is higher over the white ice region, the net all-wave energy is higher over the BIA. Derived albedo for each surface type confirms that the blue ice areas have lower albedo. Also, the hourly averaged temperatures are higher at lower elevation stations, creating a gradient towards the Ross Ice Shelf. Analysis shows that there is a diurnal oscillation in strength and intensity of the katabatic wind. The two lower stations register a distinct reversal of wind direction in the early afternoon due to intrusion of an anabatic circulation. Anabatic winds are not prevalent further up the Darwin Glacier. A high-resolution Polar-WRF simulation as a case study shows good agreement with observations. The December 2008 case study is characterized by a strong south-westerly katabatic wind over Hatherton, whereas the flow over Lower Darwin was diurnally reversing. Polar-WRF shows that the katabatic front advanced and retreated periodically between Hatherton and Lower Darwin. |
format |
Article in Journal/Newspaper |
author |
Zawar-Reza, Peyman George, Steve Storey, Bryan Lawson, Wendy |
author_facet |
Zawar-Reza, Peyman George, Steve Storey, Bryan Lawson, Wendy |
author_sort |
Zawar-Reza, Peyman |
title |
Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
title_short |
Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
title_full |
Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
title_fullStr |
Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
title_full_unstemmed |
Summertime boundary layer winds over the Darwin–Hatherton glacial system, Antarctica: observed features and numerical analysis |
title_sort |
summertime boundary layer winds over the darwin–hatherton glacial system, antarctica: observed features and numerical analysis |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1017/s0954102010000817 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000817 |
long_lat |
ENVELOPE(22.891,22.891,70.317,70.317) ENVELOPE(159.000,159.000,-79.883,-79.883) |
geographic |
Ross Ice Shelf Bia Darwin Glacier |
geographic_facet |
Ross Ice Shelf Bia Darwin Glacier |
genre |
Antarc* Antarctic Science Antarctica Darwin Glacier Ice Shelf Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Science Antarctica Darwin Glacier Ice Shelf Ross Ice Shelf |
op_source |
Antarctic Science volume 22, issue 6, page 619-632 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102010000817 |
container_title |
Antarctic Science |
container_volume |
22 |
container_issue |
6 |
container_start_page |
619 |
op_container_end_page |
632 |
_version_ |
1792507147187126272 |