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| Reverdin, Gilles; Morisset, S.; Bellenger, H.; Boutin, J.; Martin, N.; Blouch, P.; Rolland, Jean; Gaillard, Fabienne; Bouruet-aubertot, P.; Ward, B.. |
| This study describes how the hull temperature (Ttop) measurements from multisensor surface velocity program (SVP) drifters can be combined with other measurements to provide quantitative information on near-surface vertical temperature stratification during large daily cycles. First, Ttop is compared to the temperature measured at 17 -cm depth from a float tethered to the SVP drifter. These 2007-12 SVP drifters present a larger daily cycle by 1%-3% for 1 degrees-2 degrees C daily cycle amplitudes, with a maximum difference close to the local noon. The difference could result from flow around the SVP drifter in the presence of temperature stratification in the top 20 cm of the water column but also from a small influence of internal drifter temperature on... |
| Tipo: Text |
Palavras-chave: Sea surface temperature; Buoy observations. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00155/26589/24720.pdf |
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| Boutin, J.; Chao, Y.; Asher, W. E.; Delcroix, T.; Drucker, R.; Drushka, K.; Kolodziejczyk, Nicolas; Lee, T.; Reul, Nicolas; Reverdin, G.; Schanze, J.; Soloviev, A.; Yu, L.; Anderson, J.; Brucker, L.; Dinnat, E.; Santos-garcia, A.; Jones, W. L.; Maes, C.; Meissner, T.; Tang, W.; Vinogradova, N.; Ward, B.. |
| Remote sensing of salinity using satellite-mounted microwave radiometers provides new perspectives for studying ocean dynamics and the global hydrological cycle. Calibration and validation of these measurements is challenging because satellite and in situ methods measure salinity differently. Microwave radiometers measure the salinity in the top few centimeters of the ocean, whereas most in situ observations are reported below a depth of a few meters. Additionally, satellites measure salinity as a spatial average over an area of about 100x100 km2. In contrast, in situ sensors provide pointwise measurements at the location of the sensor. Thus, the presence of vertical gradients in, and horizontal variability of, sea surface salinity complicates comparing... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00300/41095/40268.pdf |
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