1
artículo
Publicado 2001
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The objective of this work is the estimation of the temperature of the sea surface in the Eastern Pacific Ocean of the Southern Hemisphere from the images of the meteorological satellite of polar orbit NOAA-14 (National Administration of Atmospheric Oceanography). The study area ranges from the Peruvian coast, 70 ° W to 90 ° W of geographic longitude and from 2 ° S to 22 ° S of geographic latitude. This parameter will be applied in the determination of thermal fronts or fishing fronts. The original HRPT (High Resolution Picture Transmition) format image data is from January 1999. During the initial processing of the image data, the original HRPT format (16 bits) has been converted into another BURL format (Bradford University Research Limited) (10 bits) of interest to us. The threshold technique has been used on channels 1 and 5 for the removal of clouds. The size of the original ima...
2
artículo
Publicado 2000
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The calibration of the original HRPT and LAC images, corresponding to channels 1 and 2 of the AVHRR sensor of the NOAA-14 satellite in polar orbit has been undertaken with the purpose of estimating the Normalized Difference Vegetation Index (NDVI) above Peru. The imagery data used were obtained from IMARPE, ABTEMA, INPE and SAA, and are in binary 16 bits per pixel format for the 5 channels. Reflectance images for channels 1 and 2 images have been obtained in 16 bits (data type: integers). Afterwards, the NDVI is obtained using an equation in which the information from the reflectance images is used. The imagery data product of the vegetation indices are obtained for every day from January to Febrary 1999. We pretend to obtain monthly and 10-day images to get an average NDVI using the method of compound máxima. Finally, we are preparing a time series for this parameter from January 1980 ...