Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives
On the basis of ERA40 and NCEP/NCAR Reanalysis (NNR) and simulations from CCCma, CCSM, CSIRO, HadCM3, MIROC-MEDRES and GFDL, which support the Intergovernmental Panel on Climate Change (IPCC) 4th Assessment Report (AR4), we demonstrated that the amplitude of the annual and the semi-annual harmonics...
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ftnerc:oai:nora.nerc.ac.uk:14061 2023-05-15T13:45:11+02:00 Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives Justino, F. Setzer, A. Bracegirdle, Thomas J. Mendes, D. Grimm, A. Dechiche, G. Schaefer, C.E.G.R. 2011 http://nora.nerc.ac.uk/id/eprint/14061/ http://onlinelibrary.wiley.com/doi/10.1002/joc.2090/pdf unknown Wiley-Blackwell Justino, F.; Setzer, A.; Bracegirdle, Thomas J. orcid:0000-0002-8868-4739 Mendes, D.; Grimm, A.; Dechiche, G.; Schaefer, C.E.G.R. 2011 Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives. International Journal of Climatology, 31 (4). 514-530. https://doi.org/10.1002/joc.2090 <https://doi.org/10.1002/joc.2090> Meteorology and Climatology Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1002/joc.2090 2023-02-04T19:28:57Z On the basis of ERA40 and NCEP/NCAR Reanalysis (NNR) and simulations from CCCma, CCSM, CSIRO, HadCM3, MIROC-MEDRES and GFDL, which support the Intergovernmental Panel on Climate Change (IPCC) 4th Assessment Report (AR4), we demonstrated that the amplitude of the annual and the semi-annual harmonics delivered by the ERA40 and NNR is dominated by distinct seasonal variability. The maximum first harmonic amplitude of near surface temperature 2-metre air temperature (t2m) according the NNR is located over the Plateau of East Antarctica, whereas analyses for ERA40 show maximum amplitude over the west Antarctic ice sheet. The spatial pattern of the first harmonic of t2m in NNR more closely corresponds to station observations, suggesting that the seasonal cycle of t2m over Antarctica may be biased in ERA-40. A comparison between the global climate models (GCMs) and NNR demonstrates that the models satisfactorily simulate the amplitude of the first and second harmonics; however, the modelling results differ among themselves in terms of the amplitude values. Larger seasonal variability is identified for CCCma, HadCM3 and MIROC-MEDRES with values as high as 20 °C over the Antarctic plateau. We have further identified that the CSIRO GCM does not reproduce the seasonal amplitude of t2m as compared to other models, which is primarily due to its overestimation of the cloud cover and weak seasonal changes of precipitation. Calculations of the harmonic analysis based upon greenhouse warming (GW) conditions reveal that there is no substantial seasonal difference between the amplitude of the first harmonic as projected by GW and present day (PD) simulations over the Antarctic continent. Over the polar ocean, however, the amplitude of the first harmonic is reduced in all climate models under future conditions. In order to narrow down the uncertainties on future climate projections, analyses of the cloud forcing which include the short- and long-wave radiation and the surface mass balance (SMB) may provide substantial information ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet International Journal of Climatology 31 4 514 530 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Justino, F. Setzer, A. Bracegirdle, Thomas J. Mendes, D. Grimm, A. Dechiche, G. Schaefer, C.E.G.R. Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
topic_facet |
Meteorology and Climatology |
description |
On the basis of ERA40 and NCEP/NCAR Reanalysis (NNR) and simulations from CCCma, CCSM, CSIRO, HadCM3, MIROC-MEDRES and GFDL, which support the Intergovernmental Panel on Climate Change (IPCC) 4th Assessment Report (AR4), we demonstrated that the amplitude of the annual and the semi-annual harmonics delivered by the ERA40 and NNR is dominated by distinct seasonal variability. The maximum first harmonic amplitude of near surface temperature 2-metre air temperature (t2m) according the NNR is located over the Plateau of East Antarctica, whereas analyses for ERA40 show maximum amplitude over the west Antarctic ice sheet. The spatial pattern of the first harmonic of t2m in NNR more closely corresponds to station observations, suggesting that the seasonal cycle of t2m over Antarctica may be biased in ERA-40. A comparison between the global climate models (GCMs) and NNR demonstrates that the models satisfactorily simulate the amplitude of the first and second harmonics; however, the modelling results differ among themselves in terms of the amplitude values. Larger seasonal variability is identified for CCCma, HadCM3 and MIROC-MEDRES with values as high as 20 °C over the Antarctic plateau. We have further identified that the CSIRO GCM does not reproduce the seasonal amplitude of t2m as compared to other models, which is primarily due to its overestimation of the cloud cover and weak seasonal changes of precipitation. Calculations of the harmonic analysis based upon greenhouse warming (GW) conditions reveal that there is no substantial seasonal difference between the amplitude of the first harmonic as projected by GW and present day (PD) simulations over the Antarctic continent. Over the polar ocean, however, the amplitude of the first harmonic is reduced in all climate models under future conditions. In order to narrow down the uncertainties on future climate projections, analyses of the cloud forcing which include the short- and long-wave radiation and the surface mass balance (SMB) may provide substantial information ... |
format |
Article in Journal/Newspaper |
author |
Justino, F. Setzer, A. Bracegirdle, Thomas J. Mendes, D. Grimm, A. Dechiche, G. Schaefer, C.E.G.R. |
author_facet |
Justino, F. Setzer, A. Bracegirdle, Thomas J. Mendes, D. Grimm, A. Dechiche, G. Schaefer, C.E.G.R. |
author_sort |
Justino, F. |
title |
Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
title_short |
Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
title_full |
Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
title_fullStr |
Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
title_full_unstemmed |
Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives |
title_sort |
harmonic analysis of climatological temperature over antarctica: present day and greenhouse warming perspectives |
publisher |
Wiley-Blackwell |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/14061/ http://onlinelibrary.wiley.com/doi/10.1002/joc.2090/pdf |
geographic |
Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_relation |
Justino, F.; Setzer, A.; Bracegirdle, Thomas J. orcid:0000-0002-8868-4739 Mendes, D.; Grimm, A.; Dechiche, G.; Schaefer, C.E.G.R. 2011 Harmonic analysis of climatological temperature over Antarctica: present day and greenhouse warming perspectives. International Journal of Climatology, 31 (4). 514-530. https://doi.org/10.1002/joc.2090 <https://doi.org/10.1002/joc.2090> |
op_doi |
https://doi.org/10.1002/joc.2090 |
container_title |
International Journal of Climatology |
container_volume |
31 |
container_issue |
4 |
container_start_page |
514 |
op_container_end_page |
530 |
_version_ |
1766215659943886848 |