Se presentan el procesamiento realizado a las imágenes infrarojas térmicas (10.20 a 11.20 & mu;) del satélite geoestacionario GOES 8. La región de estudio en el área comprendida entre: 0° a 18° S de latitud y 83° a 65 W de longitud, que corresponde a Perú. Los datos de imágenes se encuentran en formato tiff binario (8 bit). Los píxeles tienen una resolución espacial de 4.9 km y se considera que 110 km es igual a un grado en el Ecuador geográfico. Este proceso es aplicado a imágenes GOES-8 del mes de enero del año 202 y se usa una técnica físico-matemático (Convective Stratiform Technique, CST) para la obtención de lluvia convectiva y estratiforme. Se presentan los resultados, haciéndose un análisis del RMSD y BIAS encontrados.

The main objective of this paper is to estímate the monthly rainfall over Peru during EL NIÑO weak to moderate of the 2002 year. To make this GOES-8 satellite images and the convective stratiform technique are used. An analysis of the comparison between GOES-8 estimates and monthly rainfall gauges values is presented. It is observed that the monthly rain rate estímate over the Peruvian rain forest offers the best correlations. However the Peruvian mountain presents the mínimum bias. An explanation is developed to these results making an analysis of the estimates of rain rate that diverse authors carry out in other latitudes.

The goal of the present paper ís the evaluation of a physical-mathematical technique to estímate the rain rate in the Peruvian north coast during days of extreme rainfall the period considered in this work in april 2002. For this purpose infrared GOES-8 satellíte images have been used. The results show that the used technique produces a good representation of the diurna!varíability of rain; however a seríous deficiency exísts in the daily rain rate estimation. The orography conditions and rapid rain formation during an atmospheric process similar to EL NIÑO one would explaín the cause of the opposing results.

The interaction of the electromagnetic field with a homogeneous and non-magnetized isotropic dielectric sphere is described under the Mie solution of Maxwell equations, considering the absorption and scattering for a variable wavelength of electromagnetic waves with respect to the microsphere sizes.Results of the extinction factors for different refractive indices of different materials found in the literature and the determination of the optical thickness for spherical particles are shown.

The chlorophyll a is an indicator of the plankton biomass for track flows, jets and oceanographic feathers and is used as an entry for primary production models. The chlorophyll a in the Peruvian sea surface can be measured by means of satellite remote sensing in the visible spectral range from 0.4 to 0.7 μm. This work aims to develop a physical model for the estimation of chlorophyll a concentration from the MODIS images in the Peruvian sea.

The chlorophill a in the Peruvian sea must be measured by means of remote sensing in the visible range. The objective of the present work is to determine the chlorophill a concentration using MODIS images from the Peruvian sea. The mean monthly concentration maps of chlorophill a of January, February, March and April of 2006 year has been obtained from the MODIS-AQUA images. In each monthly image the chlrophill a concentration is greater near to coastline and decrese gradually far from the coast. In the Northern coast (0-5°S), the chlorophill a vary between 0.05 to 0.5 g/cm3 and it disperse far from the coast. In the Central coast (5°-15°S) the chlorophill a vary between 10 to 30 g/cm3, it’s more dense in the coastline and diminished conform the distance from the coast is increased. In the Southern coast (15°-20°S) the chlorophill a vary between 3 to 5 g/cm3 very near to the coast...