Validación de imágenes satelitales de temperatura superficial del mar mediante observaciones in situ
DOI:
https://doi.org/10.26640/22159045.113Keywords:
Colombia caribbean, Guajira, sea surface temperature, satellites NOAAAbstract
In situ sea surface temperature obtained in the oceanographic cruise "Caribe-2003" on board of the R/V ARC "Malpelo" in March and April 2003 in Guajira sea waters (Colombian Caribbean) is compared with remote radiometer measurements from polar orbit satellites NOAA-16 and NOAA-17.
In a two week period, 252 points were used for the calibration. In the night, the mean value of the difference AT between skin temperature and bulk temperature was -0.92 ± 0.54 °C, while in the daytime this mean value amounted to -0.43 + 0.67 °C (homogeneity was assumed in the behavior of both satellites).
These results are discussed and compared with alternative in situ measurements; the dependence of the difference AT is also discussed in terms of cloud cover, wind and net heat flux. Day-time and night-time biases are compared with random errors produced by clouds. The study emphasizes the utility of sea surface temperature images for regional hydrodynamic forecast models.
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References
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