Surface net heat flux estimated from drifter observations
The ocean mixed layer temperature equation is used to estimate the surface net heat flux from drifter measurements. The net heat flux is determined for both the climatologic and tropical cyclone (TC) conditions. The spatial distributions of the drifter-derived heat fluxes under both the two conditio...
Published in: | Environmental Research Letters |
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Online Access: | https://doi.org/10.1088/1748-9326/ac8821 https://doaj.org/article/9dec2870351a473fb9ac737441c491e6 |
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ftdoajarticles:oai:doaj.org/article:9dec2870351a473fb9ac737441c491e6 2023-09-05T13:14:11+02:00 Surface net heat flux estimated from drifter observations Lingwei Wu Guihua Wang 2022-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac8821 https://doaj.org/article/9dec2870351a473fb9ac737441c491e6 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac8821 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac8821 1748-9326 https://doaj.org/article/9dec2870351a473fb9ac737441c491e6 Environmental Research Letters, Vol 17, Iss 9, p 094009 (2022) drifter air-sea net heat flux entrainment velocity eddy diffusivity tropical cyclone Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2022 ftdoajarticles https://doi.org/10.1088/1748-9326/ac8821 2023-08-13T00:36:58Z The ocean mixed layer temperature equation is used to estimate the surface net heat flux from drifter measurements. The net heat flux is determined for both the climatologic and tropical cyclone (TC) conditions. The spatial distributions of the drifter-derived heat fluxes under both the two conditions are similar to those derived from satellite observations. However, the drifter-derived climatologic heat flux appears to be weaker in magnitude than that derived from satellites, and performs better in closing the energy budget with a global mean value of 3.9 W m ^−2 . The drifter-derived heat flux also performs better than the satellite-derived heat flux under TCs, using the buoy observations as a reference considering metrics such as the meen error, mean absolute error, root mean-square error and percent bias. The spatially averaged mean net heat flux derived from drifters under TCs is −124 W m ^−2 at 10° N, and decreases to −85 W m ^−2 at 30° N, however, these values are much larger than those obtained from satellites (−63 W m ^−2 and −21 W m ^−2 , respectively). As additional components for the mixed layer temperature equation, both the entrainment velocity and eddy diffusivity in climatology show large amplitudes in regions with strong currents such as the Western Boundary Current and Antarctic Circumpolar Current. However, under TC conditions large values of the entrainment velocity and eddy diffusivity mostly appear in regions with strong winds. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Environmental Research Letters 17 9 094009 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
drifter air-sea net heat flux entrainment velocity eddy diffusivity tropical cyclone Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
drifter air-sea net heat flux entrainment velocity eddy diffusivity tropical cyclone Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Lingwei Wu Guihua Wang Surface net heat flux estimated from drifter observations |
topic_facet |
drifter air-sea net heat flux entrainment velocity eddy diffusivity tropical cyclone Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The ocean mixed layer temperature equation is used to estimate the surface net heat flux from drifter measurements. The net heat flux is determined for both the climatologic and tropical cyclone (TC) conditions. The spatial distributions of the drifter-derived heat fluxes under both the two conditions are similar to those derived from satellite observations. However, the drifter-derived climatologic heat flux appears to be weaker in magnitude than that derived from satellites, and performs better in closing the energy budget with a global mean value of 3.9 W m ^−2 . The drifter-derived heat flux also performs better than the satellite-derived heat flux under TCs, using the buoy observations as a reference considering metrics such as the meen error, mean absolute error, root mean-square error and percent bias. The spatially averaged mean net heat flux derived from drifters under TCs is −124 W m ^−2 at 10° N, and decreases to −85 W m ^−2 at 30° N, however, these values are much larger than those obtained from satellites (−63 W m ^−2 and −21 W m ^−2 , respectively). As additional components for the mixed layer temperature equation, both the entrainment velocity and eddy diffusivity in climatology show large amplitudes in regions with strong currents such as the Western Boundary Current and Antarctic Circumpolar Current. However, under TC conditions large values of the entrainment velocity and eddy diffusivity mostly appear in regions with strong winds. |
format |
Article in Journal/Newspaper |
author |
Lingwei Wu Guihua Wang |
author_facet |
Lingwei Wu Guihua Wang |
author_sort |
Lingwei Wu |
title |
Surface net heat flux estimated from drifter observations |
title_short |
Surface net heat flux estimated from drifter observations |
title_full |
Surface net heat flux estimated from drifter observations |
title_fullStr |
Surface net heat flux estimated from drifter observations |
title_full_unstemmed |
Surface net heat flux estimated from drifter observations |
title_sort |
surface net heat flux estimated from drifter observations |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
https://doi.org/10.1088/1748-9326/ac8821 https://doaj.org/article/9dec2870351a473fb9ac737441c491e6 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Environmental Research Letters, Vol 17, Iss 9, p 094009 (2022) |
op_relation |
https://doi.org/10.1088/1748-9326/ac8821 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac8821 1748-9326 https://doaj.org/article/9dec2870351a473fb9ac737441c491e6 |
op_doi |
https://doi.org/10.1088/1748-9326/ac8821 |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
9 |
container_start_page |
094009 |
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1776205225365864448 |