Heat and salinity budgets at the Stratus mooring in the southeast Pacific

dc.contributor.author Holte, James W.
dc.contributor.author Straneo, Fiamma
dc.contributor.author Farrar, J. Thomas
dc.contributor.author Weller, Robert A.
dc.date.accessioned 2015-01-07T21:04:49Z
dc.date.available 2015-05-28T09:09:48Z
dc.date.issued 2014-11-28
dc.description Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 119 (2014): 8162–8176, doi:10.1002/2014JC010256. en_US
dc.description.abstract The surface layer of the southeast Pacific Ocean (SEP) requires an input of cold, fresh water to balance heat gain, and evaporation from air-sea fluxes. Models typically fail to reproduce the cool sea surface temperatures (SST) of the SEP, limiting our ability to understand the variability of this climatically important region. We estimate the annual heat budget of the SEP for the period 2004–2009, using data from the upper 250 m of the Stratus mooring, located at 85°W 20°S, and from Argo floats. The surface buoy measures meteorological conditions and air-sea fluxes; the mooring line is heavily instrumented, measuring temperature, salinity, and velocity at more than 15 depth levels. We use a new method for estimating the advective component of the heat budget that combines Argo profiles and mooring velocity data, allowing us to calculate monthly profiles of heat advection. Averaged over the 6 year study period, we estimate a cooling advective heat flux of −41 ± 29 W m−2, accomplished by a combination of the mean gyre circulation, Ekman transport, and eddies. This compensates for warming fluxes of 32 ± 4 W m−2 due to air-sea fluxes and 7 ± 9 W m−2 due to vertical mixing and Ekman pumping. A salinity budget exhibits a similar balance, with advection of freshwater (−60 psu m) replenishing the freshwater lost through evaporation (47 psu m) and Ekman pumping (14 psu m). en_US
dc.description.embargo 2015-05-28 en_US
dc.description.sponsorship This work was supported by NOAA's Climate Program Office and by NSF grant OCE-0745508. en_US
dc.format.mimetype application/pdf
dc.identifier.citation Journal of Geophysical Research: Oceans 119 (2014): 8162–8176 en_US
dc.identifier.doi 10.1002/2014JC010256
dc.identifier.uri https://hdl.handle.net/1912/7026
dc.language.iso en_US en_US
dc.publisher John Wiley & Sons en_US
dc.relation.uri https://doi.org/10.1002/2014JC010256
dc.subject Southeast Pacific en_US
dc.subject Heat budget en_US
dc.subject Argo en_US
dc.subject Stratus mooring en_US
dc.title Heat and salinity budgets at the Stratus mooring in the southeast Pacific en_US
dc.type Article en_US
dspace.entity.type Publication
relation.isAuthorOfPublication c832360d-1cd9-46f6-a58f-51b4b422b626
relation.isAuthorOfPublication d3ffa7ad-e320-4749-9865-3569d315efde
relation.isAuthorOfPublication 6edf15f5-3541-4c74-b8b9-b45c4736cc3f
relation.isAuthorOfPublication 64acc4be-6b9f-4931-afdb-517d400130e3
relation.isAuthorOfPublication.latestForDiscovery c832360d-1cd9-46f6-a58f-51b4b422b626
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
1.6 MB
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
1.89 KB
Item-specific license agreed upon to submission