Daily to intraseasonal oscillations at Antarctic research station Neumayer
High temporal resolution (three hours) records of temperature, wind speed and sea level pressure recorded at Antarctic research station Neumayer (708S, 88W) during 1982–2011 are analysed to identify oscillations from daily to intraseasonal timescales. The diurnal cycle dominates the three-hourly tim...
Published in: | Antarctic Science |
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CAMBRIDGE UNIV PRESS
2014
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Online Access: | https://epic.awi.de/id/eprint/33818/ https://epic.awi.de/id/eprint/33818/1/ANS_S0954102013000540a.pdf https://www.cambridge.org/core/journals/antarctic-science/article/daily-to-intraseasonal-oscillations-at-antarctic-research-station-neumayer/E3C7BC80E7C6D04137EE88E63A954D6F https://hdl.handle.net/10013/epic.42197 https://hdl.handle.net/10013/epic.42197.d001 |
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ftawi:oai:epic.awi.de:33818 2024-09-09T19:03:36+00:00 Daily to intraseasonal oscillations at Antarctic research station Neumayer Rimbu, Norel Lohmann, Gerrit König-Langlo, Gert Necula, C. Ionita, Monica 2014-04 application/pdf https://epic.awi.de/id/eprint/33818/ https://epic.awi.de/id/eprint/33818/1/ANS_S0954102013000540a.pdf https://www.cambridge.org/core/journals/antarctic-science/article/daily-to-intraseasonal-oscillations-at-antarctic-research-station-neumayer/E3C7BC80E7C6D04137EE88E63A954D6F https://hdl.handle.net/10013/epic.42197 https://hdl.handle.net/10013/epic.42197.d001 unknown CAMBRIDGE UNIV PRESS https://epic.awi.de/id/eprint/33818/1/ANS_S0954102013000540a.pdf https://hdl.handle.net/10013/epic.42197.d001 Rimbu, N. orcid:0000-0003-2832-9396 , Lohmann, G. orcid:0000-0003-2089-733X , König-Langlo, G. , Necula, C. and Ionita, M. orcid:0000-0001-8240-4380 (2014) Daily to intraseasonal oscillations at Antarctic research station Neumayer , Antarctic Science, 26 (2), pp. 193-204 . doi:10.1017/S0954102013000540 <https://doi.org/10.1017/S0954102013000540> , hdl:10013/epic.42197 EPIC3Antarctic Science, CAMBRIDGE UNIV PRESS, 26(2), pp. 193-204, ISSN: 0954-1020 Article isiRev 2014 ftawi https://doi.org/10.1017/S0954102013000540 2024-06-24T04:07:26Z High temporal resolution (three hours) records of temperature, wind speed and sea level pressure recorded at Antarctic research station Neumayer (708S, 88W) during 1982–2011 are analysed to identify oscillations from daily to intraseasonal timescales. The diurnal cycle dominates the three-hourly time series of temperature during the Antarctic summer and is almost absent during winter. In contrast, the three-hourly time series of wind speed and sea level pressure show a weak diurnal cycle. The dominant pattern of the intraseasonal variability of these quantities, which captures the out-of-phase variation of temperature and wind speed with sea level pressure, shows enhanced variability at timescales of , 40 days and , 80 days, respectively. Correlation and composite analysis reveal that these oscillations may be related to tropical intraseasonal oscillations via large-scale eastward propagating atmospheric circulation wave-trains. The second pattern of intraseasonal variability, which captures in-phase variations of temperature, wind and sea level pressure, shows enhanced variability at timescales of , 35, , 60 and , 120 days. These oscillations are attributed to the Southern Annular Mode/Antarctic Oscillation (SAM/AAO) which shows enhanced variability at these timescales. We argue that intraseasonal oscillations of tropical climate and SAM/AAO are related to distinct patterns of climate variables measured at Neumayer. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Neumayer The Antarctic Antarctic Science 26 2 193 204 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
High temporal resolution (three hours) records of temperature, wind speed and sea level pressure recorded at Antarctic research station Neumayer (708S, 88W) during 1982–2011 are analysed to identify oscillations from daily to intraseasonal timescales. The diurnal cycle dominates the three-hourly time series of temperature during the Antarctic summer and is almost absent during winter. In contrast, the three-hourly time series of wind speed and sea level pressure show a weak diurnal cycle. The dominant pattern of the intraseasonal variability of these quantities, which captures the out-of-phase variation of temperature and wind speed with sea level pressure, shows enhanced variability at timescales of , 40 days and , 80 days, respectively. Correlation and composite analysis reveal that these oscillations may be related to tropical intraseasonal oscillations via large-scale eastward propagating atmospheric circulation wave-trains. The second pattern of intraseasonal variability, which captures in-phase variations of temperature, wind and sea level pressure, shows enhanced variability at timescales of , 35, , 60 and , 120 days. These oscillations are attributed to the Southern Annular Mode/Antarctic Oscillation (SAM/AAO) which shows enhanced variability at these timescales. We argue that intraseasonal oscillations of tropical climate and SAM/AAO are related to distinct patterns of climate variables measured at Neumayer. |
format |
Article in Journal/Newspaper |
author |
Rimbu, Norel Lohmann, Gerrit König-Langlo, Gert Necula, C. Ionita, Monica |
spellingShingle |
Rimbu, Norel Lohmann, Gerrit König-Langlo, Gert Necula, C. Ionita, Monica Daily to intraseasonal oscillations at Antarctic research station Neumayer |
author_facet |
Rimbu, Norel Lohmann, Gerrit König-Langlo, Gert Necula, C. Ionita, Monica |
author_sort |
Rimbu, Norel |
title |
Daily to intraseasonal oscillations at Antarctic research station Neumayer |
title_short |
Daily to intraseasonal oscillations at Antarctic research station Neumayer |
title_full |
Daily to intraseasonal oscillations at Antarctic research station Neumayer |
title_fullStr |
Daily to intraseasonal oscillations at Antarctic research station Neumayer |
title_full_unstemmed |
Daily to intraseasonal oscillations at Antarctic research station Neumayer |
title_sort |
daily to intraseasonal oscillations at antarctic research station neumayer |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/33818/ https://epic.awi.de/id/eprint/33818/1/ANS_S0954102013000540a.pdf https://www.cambridge.org/core/journals/antarctic-science/article/daily-to-intraseasonal-oscillations-at-antarctic-research-station-neumayer/E3C7BC80E7C6D04137EE88E63A954D6F https://hdl.handle.net/10013/epic.42197 https://hdl.handle.net/10013/epic.42197.d001 |
geographic |
Antarctic Neumayer The Antarctic |
geographic_facet |
Antarctic Neumayer The Antarctic |
genre |
Antarc* Antarctic Antarctic Science |
genre_facet |
Antarc* Antarctic Antarctic Science |
op_source |
EPIC3Antarctic Science, CAMBRIDGE UNIV PRESS, 26(2), pp. 193-204, ISSN: 0954-1020 |
op_relation |
https://epic.awi.de/id/eprint/33818/1/ANS_S0954102013000540a.pdf https://hdl.handle.net/10013/epic.42197.d001 Rimbu, N. orcid:0000-0003-2832-9396 , Lohmann, G. orcid:0000-0003-2089-733X , König-Langlo, G. , Necula, C. and Ionita, M. orcid:0000-0001-8240-4380 (2014) Daily to intraseasonal oscillations at Antarctic research station Neumayer , Antarctic Science, 26 (2), pp. 193-204 . doi:10.1017/S0954102013000540 <https://doi.org/10.1017/S0954102013000540> , hdl:10013/epic.42197 |
op_doi |
https://doi.org/10.1017/S0954102013000540 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
2 |
container_start_page |
193 |
op_container_end_page |
204 |
_version_ |
1809817615449718784 |