Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case
Abstract Cyclones with strong winds can make the Southern Ocean and the Antarctic a dangerous environment. Accurate weather forecasts are essential for safe shipping in the Southern Ocean and observational and logistical operations at Antarctic research stations. This study investigated the impact o...
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crspringernat:10.1007/s00376-019-8231-x 2023-05-15T14:07:40+02:00 Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case Sato, Kazutoshi Inoue, Jun Yamazaki, Akira Hirasawa, Naohiko Sugiura, Konosuke Yamada, Kyohei 2020 http://dx.doi.org/10.1007/s00376-019-8231-x http://link.springer.com/content/pdf/10.1007/s00376-019-8231-x.pdf http://link.springer.com/article/10.1007/s00376-019-8231-x/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Advances in Atmospheric Sciences volume 37, issue 5, page 431-440 ISSN 0256-1530 1861-9533 Atmospheric Science journal-article 2020 crspringernat https://doi.org/10.1007/s00376-019-8231-x 2022-01-04T16:41:52Z Abstract Cyclones with strong winds can make the Southern Ocean and the Antarctic a dangerous environment. Accurate weather forecasts are essential for safe shipping in the Southern Ocean and observational and logistical operations at Antarctic research stations. This study investigated the impact of additional radiosonde observations from Research Vessel “Shirase” over the Southern Ocean and Dome Fuji Station in Antarctica on reanalysis data and forecast experiments using an ensemble data assimilation system comprising the Atmospheric General Circulation Model for the Earth Simulator and the Local Ensemble Transform Kalman Filter Experimental Ensemble Reanalysis, version 2. A 63-member ensemble forecast experiment was conducted focusing on an unusually strong Antarctic cyclonic event. Reanalysis data with (observing system experiment) and without (control) additional radiosonde data were used as initial values. The observing system experiment correctly captured the central pressure of the cyclone, which led to the reliable prediction of the strong winds and moisture transport near the coast. Conversely, the control experiment predicted lower wind speeds because it failed to forecast the central pressure of the cyclone adequately. Differences were found in cyclone predictions of operational forecast systems with and without assimilation of radiosonde observations from Dome Fuji Station. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Springer Nature (via Crossref) Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dome Fuji Station ENVELOPE(39.703,39.703,-77.317,-77.317) Southern Ocean The Antarctic Advances in Atmospheric Sciences 37 5 431 440 |
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Springer Nature (via Crossref) |
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English |
topic |
Atmospheric Science |
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Atmospheric Science Sato, Kazutoshi Inoue, Jun Yamazaki, Akira Hirasawa, Naohiko Sugiura, Konosuke Yamada, Kyohei Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
topic_facet |
Atmospheric Science |
description |
Abstract Cyclones with strong winds can make the Southern Ocean and the Antarctic a dangerous environment. Accurate weather forecasts are essential for safe shipping in the Southern Ocean and observational and logistical operations at Antarctic research stations. This study investigated the impact of additional radiosonde observations from Research Vessel “Shirase” over the Southern Ocean and Dome Fuji Station in Antarctica on reanalysis data and forecast experiments using an ensemble data assimilation system comprising the Atmospheric General Circulation Model for the Earth Simulator and the Local Ensemble Transform Kalman Filter Experimental Ensemble Reanalysis, version 2. A 63-member ensemble forecast experiment was conducted focusing on an unusually strong Antarctic cyclonic event. Reanalysis data with (observing system experiment) and without (control) additional radiosonde data were used as initial values. The observing system experiment correctly captured the central pressure of the cyclone, which led to the reliable prediction of the strong winds and moisture transport near the coast. Conversely, the control experiment predicted lower wind speeds because it failed to forecast the central pressure of the cyclone adequately. Differences were found in cyclone predictions of operational forecast systems with and without assimilation of radiosonde observations from Dome Fuji Station. |
format |
Article in Journal/Newspaper |
author |
Sato, Kazutoshi Inoue, Jun Yamazaki, Akira Hirasawa, Naohiko Sugiura, Konosuke Yamada, Kyohei |
author_facet |
Sato, Kazutoshi Inoue, Jun Yamazaki, Akira Hirasawa, Naohiko Sugiura, Konosuke Yamada, Kyohei |
author_sort |
Sato, Kazutoshi |
title |
Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
title_short |
Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
title_full |
Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
title_fullStr |
Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
title_full_unstemmed |
Antarctic Radiosonde Observations Reduce Uncertainties and Errors in Reanalyses and Forecasts over the Southern Ocean: An Extreme Cyclone Case |
title_sort |
antarctic radiosonde observations reduce uncertainties and errors in reanalyses and forecasts over the southern ocean: an extreme cyclone case |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s00376-019-8231-x http://link.springer.com/content/pdf/10.1007/s00376-019-8231-x.pdf http://link.springer.com/article/10.1007/s00376-019-8231-x/fulltext.html |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.703,39.703,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji Dome Fuji Station Southern Ocean The Antarctic |
geographic_facet |
Antarctic Dome Fuji Dome Fuji Station Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
Advances in Atmospheric Sciences volume 37, issue 5, page 431-440 ISSN 0256-1530 1861-9533 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00376-019-8231-x |
container_title |
Advances in Atmospheric Sciences |
container_volume |
37 |
container_issue |
5 |
container_start_page |
431 |
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440 |
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1766279677966548992 |