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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Observed Ocean Bottom Temperature Variability at Four Sites in the Northwestern Argentine Basin: Evidence of Decadal Deep/Abyssal Warming Amidst Hourly to Interannual Variability During 2009-2019

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Author(s):
Meinen, Christopher S. [1] ; Perez, Renellys C. [1] ; Dong, Shenfu [1] ; Piola, Alberto R. [2, 3, 4] ; Campos, Edmo [5, 6]
Total Authors: 5
Affiliation:
[1] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 - USA
[2] Univ Buenos Aires, Buenos Aires, DF - Argentina
[3] Serv Hidrog Naval, Buenos Aires, DF - Argentina
[4] Consejo Nacl Invest Cient & Tecn, Inst Francoargentino Estudios Clima & Sus Impacto, Buenos Aires, DF - Argentina
[5] Univ Sao Paulo, Oceanog Inst, Sao Paulo - Brazil
[6] Amer Univ Shatjah, Sch Arts & Sci, Dept Biol Chem & Environm Sci, Sharjah - U Arab Emirates
Total Affiliations: 6
Document type: Journal article
Source: Geophysical Research Letters; v. 47, n. 18 SEP 28 2020.
Web of Science Citations: 2
Abstract

Consecutive multiyear records of hourly ocean bottom temperature measurements are merged to produce new decade-long time series at four depths ranging from 1,360 to 4,757 m within the northwest Argentine Basin at 34.5 degrees S. Energetic temperature variations are found at a wide range of time scales. All sites exhibit fairly linear warming trends of approximately 0.02-0.04 degrees C per decade over the period 2009-2019, although the trends are only statistically different from zero at the two deepest sites at depths of similar to 4,500-4,800 m. Near-bottom temperatures from independent conductivity-temperature-depth profiles collected at these same locations every 6-24 months over the same decade show roughly consistent trends. Based on the distribution of spectral energies at the deepest sites and a Monte Carlo-style analysis, sampling at least once per year is necessary to capture the significant warming trends over this decade to within 50% error bars at a 95% confidence limit. (AU)

FAPESP's process: 11/50552-4 - Impact of the Southern Atlantic on the global overturning circulation (MOC) and climate (SAMOC)
Grantee:Edmo José Dias Campos
Support Opportunities: Research Program on Global Climate Change - Thematic Grants