Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean
The Southern Ocean (SO) is one of the important regions where significant processes and feedbacks of the Earth's climate take place. Expeditions to the SO provide useful data for improving global weather/climate simulations and understanding many processes. Some of the uncertainties in these we...
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ftcityunivny:oai:academicworks.cuny.edu:ny_pubs-1214 2023-06-11T04:16:57+02:00 Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean Gera, Anitha Mahapatra, D K Sharma, Kuldeep Prakash, Satya Mitra, A. K. Iyengar, G. R. Rajagopal, E. N. Anil Kumar, N. 2017-04-28T07:00:00Z application/pdf https://academicworks.cuny.edu/ny_pubs/212 https://academicworks.cuny.edu/context/ny_pubs/article/1214/viewcontent/SOanitha_PolarScience_acceptedms.pdf English eng CUNY Academic Works https://academicworks.cuny.edu/ny_pubs/212 https://academicworks.cuny.edu/context/ny_pubs/article/1214/viewcontent/SOanitha_PolarScience_acceptedms.pdf Publications and Research Southern ocean Numerical weather prediction Westerly winds Sub–seasonal rainfall variability Sub polar low pressure systems Oceanography and Atmospheric Sciences and Meteorology article 2017 ftcityunivny 2023-05-06T22:16:40Z The Southern Ocean (SO) is one of the important regions where significant processes and feedbacks of the Earth's climate take place. Expeditions to the SO provide useful data for improving global weather/climate simulations and understanding many processes. Some of the uncertainties in these weather/climate models arise during the first few days of simulation/forecast and do not grow much further. NCMRWF issued real-time five day weather forecasts of mean sea level pressure, surface winds, winds at 500 hPa & 850 hPa and rainfall, daily to NCAOR to provide guidance for their expedition to Indian sector of SO during the austral summer of 2014–2015. Evaluation of the skill of these forecasts indicates possible error growth in the atmospheric model at shorter time scales. The error growth is assessed using the model analysis/reanalysis, satellite data and observations made during the expedition. The observed variability of sub-seasonal rainfall associated with mid-latitude systems is seen to exhibit eastward propagations and are well reproduced in the model forecasts. All cyclonic disturbances including the sub-polar lows and tropical cyclones that occurred during this period were well captured in the model forecasts. Overall, this model performs reasonably well over the Indian sector of the SO in medium range time scale. Article in Journal/Newspaper Southern Ocean City University of New York: CUNY Academic Works Austral Indian Southern Ocean |
institution |
Open Polar |
collection |
City University of New York: CUNY Academic Works |
op_collection_id |
ftcityunivny |
language |
English |
topic |
Southern ocean Numerical weather prediction Westerly winds Sub–seasonal rainfall variability Sub polar low pressure systems Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
Southern ocean Numerical weather prediction Westerly winds Sub–seasonal rainfall variability Sub polar low pressure systems Oceanography and Atmospheric Sciences and Meteorology Gera, Anitha Mahapatra, D K Sharma, Kuldeep Prakash, Satya Mitra, A. K. Iyengar, G. R. Rajagopal, E. N. Anil Kumar, N. Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
topic_facet |
Southern ocean Numerical weather prediction Westerly winds Sub–seasonal rainfall variability Sub polar low pressure systems Oceanography and Atmospheric Sciences and Meteorology |
description |
The Southern Ocean (SO) is one of the important regions where significant processes and feedbacks of the Earth's climate take place. Expeditions to the SO provide useful data for improving global weather/climate simulations and understanding many processes. Some of the uncertainties in these weather/climate models arise during the first few days of simulation/forecast and do not grow much further. NCMRWF issued real-time five day weather forecasts of mean sea level pressure, surface winds, winds at 500 hPa & 850 hPa and rainfall, daily to NCAOR to provide guidance for their expedition to Indian sector of SO during the austral summer of 2014–2015. Evaluation of the skill of these forecasts indicates possible error growth in the atmospheric model at shorter time scales. The error growth is assessed using the model analysis/reanalysis, satellite data and observations made during the expedition. The observed variability of sub-seasonal rainfall associated with mid-latitude systems is seen to exhibit eastward propagations and are well reproduced in the model forecasts. All cyclonic disturbances including the sub-polar lows and tropical cyclones that occurred during this period were well captured in the model forecasts. Overall, this model performs reasonably well over the Indian sector of the SO in medium range time scale. |
format |
Article in Journal/Newspaper |
author |
Gera, Anitha Mahapatra, D K Sharma, Kuldeep Prakash, Satya Mitra, A. K. Iyengar, G. R. Rajagopal, E. N. Anil Kumar, N. |
author_facet |
Gera, Anitha Mahapatra, D K Sharma, Kuldeep Prakash, Satya Mitra, A. K. Iyengar, G. R. Rajagopal, E. N. Anil Kumar, N. |
author_sort |
Gera, Anitha |
title |
Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
title_short |
Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
title_full |
Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
title_fullStr |
Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
title_full_unstemmed |
Assessment of Marine Weather forecasts over the Indian Sector of Southern Ocean |
title_sort |
assessment of marine weather forecasts over the indian sector of southern ocean |
publisher |
CUNY Academic Works |
publishDate |
2017 |
url |
https://academicworks.cuny.edu/ny_pubs/212 https://academicworks.cuny.edu/context/ny_pubs/article/1214/viewcontent/SOanitha_PolarScience_acceptedms.pdf |
geographic |
Austral Indian Southern Ocean |
geographic_facet |
Austral Indian Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Publications and Research |
op_relation |
https://academicworks.cuny.edu/ny_pubs/212 https://academicworks.cuny.edu/context/ny_pubs/article/1214/viewcontent/SOanitha_PolarScience_acceptedms.pdf |
_version_ |
1768375664018194432 |