Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean
Given the large uncertainties in surface heat fluxes over the Southern Ocean, an assessment of fluxes obtained by European Centre for Medium-Range Weather Forecasts interim reanalysis (ERA-Interim) product, the Australian Integrated Marine Observing System (IMOS) routine observations, and the Object...
Published in: | Journal of Atmospheric and Oceanic Technology |
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ftmonashunicris:oai:monash.edu:publications/2b6712c8-4852-470f-b708-f2d46d9d9c54 2023-05-15T18:24:21+02:00 Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean Bharti, Vidhi Schulz, Eric Fairall, Christopher W. Blomquist, Byron W. Huang, Y. I. Protat, Alain Siems, Steven T. Manton, Michael J. 2019-09-13 application/pdf https://research.monash.edu/en/publications/2b6712c8-4852-470f-b708-f2d46d9d9c54 https://doi.org/10.1175/JTECH-D-19-0009.1 https://researchmgt.monash.edu/ws/files/313796112/288141332_oa.pdf http://www.scopus.com/inward/record.url?scp=85073430531&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Bharti , V , Schulz , E , Fairall , C W , Blomquist , B W , Huang , Y I , Protat , A , Siems , S T & Manton , M J 2019 , ' Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean ' , Journal of Atmospheric and Oceanic Technology , vol. 36 , no. 9 , pp. 1849-1861 . https://doi.org/10.1175/JTECH-D-19-0009.1 article 2019 ftmonashunicris https://doi.org/10.1175/JTECH-D-19-0009.1 2023-02-05T06:33:27Z Given the large uncertainties in surface heat fluxes over the Southern Ocean, an assessment of fluxes obtained by European Centre for Medium-Range Weather Forecasts interim reanalysis (ERA-Interim) product, the Australian Integrated Marine Observing System (IMOS) routine observations, and the Objectively Analyzed Air–Sea Heat Fluxes (OAFlux) project hybrid dataset is performed. The surface fluxes are calculated using the COARE 3.5 bulk algorithm with in situ data obtained from the NOAA Physical Sciences Division flux system during the Clouds, Aerosols, Precipitation, Radiation, and Atmospheric Composition over the Southern Ocean (CAPRICORN) experiment on board the R/V Investigator during a voyage (March–April 2016) in the Australian sector of the Southern Ocean (438–538S). ERA-Interim and OAFlux data are further compared with the Southern Ocean Flux Station (SOFS) air–sea flux moored surface float deployed for a year (March 2015–April 2016) at;46.78S, 1428E. The results indicate that ERA-Interim (3 hourly at 0.258) and OAFlux (daily at 18) estimate sensible heat flux H s accurately to within 65 Wm 22 and latent heat flux H l to within 610 W m 22 . ERA-Interim gives a positive bias in H s at low latitudes (,478S) and in H l at high latitudes (.478S), and OAFlux displays consistently positive bias in H l at all latitudes. No systematic bias with respect to wind or rain conditions was observed. Although some differences in the bulk flux algorithms are noted, these biases can be largely attributed to the uncertainties in the observations used to derive the flux products. Article in Journal/Newspaper Southern Ocean Monash University Research Portal Southern Ocean Journal of Atmospheric and Oceanic Technology 36 9 1849 1861 |
institution |
Open Polar |
collection |
Monash University Research Portal |
op_collection_id |
ftmonashunicris |
language |
English |
description |
Given the large uncertainties in surface heat fluxes over the Southern Ocean, an assessment of fluxes obtained by European Centre for Medium-Range Weather Forecasts interim reanalysis (ERA-Interim) product, the Australian Integrated Marine Observing System (IMOS) routine observations, and the Objectively Analyzed Air–Sea Heat Fluxes (OAFlux) project hybrid dataset is performed. The surface fluxes are calculated using the COARE 3.5 bulk algorithm with in situ data obtained from the NOAA Physical Sciences Division flux system during the Clouds, Aerosols, Precipitation, Radiation, and Atmospheric Composition over the Southern Ocean (CAPRICORN) experiment on board the R/V Investigator during a voyage (March–April 2016) in the Australian sector of the Southern Ocean (438–538S). ERA-Interim and OAFlux data are further compared with the Southern Ocean Flux Station (SOFS) air–sea flux moored surface float deployed for a year (March 2015–April 2016) at;46.78S, 1428E. The results indicate that ERA-Interim (3 hourly at 0.258) and OAFlux (daily at 18) estimate sensible heat flux H s accurately to within 65 Wm 22 and latent heat flux H l to within 610 W m 22 . ERA-Interim gives a positive bias in H s at low latitudes (,478S) and in H l at high latitudes (.478S), and OAFlux displays consistently positive bias in H l at all latitudes. No systematic bias with respect to wind or rain conditions was observed. Although some differences in the bulk flux algorithms are noted, these biases can be largely attributed to the uncertainties in the observations used to derive the flux products. |
format |
Article in Journal/Newspaper |
author |
Bharti, Vidhi Schulz, Eric Fairall, Christopher W. Blomquist, Byron W. Huang, Y. I. Protat, Alain Siems, Steven T. Manton, Michael J. |
spellingShingle |
Bharti, Vidhi Schulz, Eric Fairall, Christopher W. Blomquist, Byron W. Huang, Y. I. Protat, Alain Siems, Steven T. Manton, Michael J. Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
author_facet |
Bharti, Vidhi Schulz, Eric Fairall, Christopher W. Blomquist, Byron W. Huang, Y. I. Protat, Alain Siems, Steven T. Manton, Michael J. |
author_sort |
Bharti, Vidhi |
title |
Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
title_short |
Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
title_full |
Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
title_fullStr |
Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
title_full_unstemmed |
Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean |
title_sort |
assessing surface heat flux products with in situ observations over the australian sector of the southern ocean |
publishDate |
2019 |
url |
https://research.monash.edu/en/publications/2b6712c8-4852-470f-b708-f2d46d9d9c54 https://doi.org/10.1175/JTECH-D-19-0009.1 https://researchmgt.monash.edu/ws/files/313796112/288141332_oa.pdf http://www.scopus.com/inward/record.url?scp=85073430531&partnerID=8YFLogxK |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Bharti , V , Schulz , E , Fairall , C W , Blomquist , B W , Huang , Y I , Protat , A , Siems , S T & Manton , M J 2019 , ' Assessing surface heat flux products with in situ observations over the Australian sector of the Southern Ocean ' , Journal of Atmospheric and Oceanic Technology , vol. 36 , no. 9 , pp. 1849-1861 . https://doi.org/10.1175/JTECH-D-19-0009.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/JTECH-D-19-0009.1 |
container_title |
Journal of Atmospheric and Oceanic Technology |
container_volume |
36 |
container_issue |
9 |
container_start_page |
1849 |
op_container_end_page |
1861 |
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1766204792244273152 |