Evaluation of TRMM rainfall products for hydrological uses at different scales
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Estadístiques de LA Referencia / Recolecta
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hdl:2099.1/26162
Tipus de documentProjecte Final de Màster Oficial
Data2013-08
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The principal objectives of the thesis are two: firstly to study the accuracy of the satellite
rainfall products in climatologically distinctive places at different scales and secondly to find
the possibility of using satellite-rain gauge blended rainfall products for hydrological
purposes.
Three case study areas Catalunya, Bangladesh, and South Africa have been chosen for the
analysis using the satellite rainfall products (TMPA) and rain gauge records for the period
from January 2005 to December 2009. The areal pattern of rainfall has been presented using
satellite rainfall products over the case study areas. Both daily and monthly products are
showing good agreement with rain gauge records although it is highly variable with space and
seasonality. From the results, it can be shown that TRMM satellite identified the seasonal
variability of rainfall. Moreover, the mean TRMM rainfall products show same pattern as like
mean rain gauge observations in daily and monthly scale in all case study areas.Finally, a blending technique is applied (originally used for radar-rain gauge blending) to
conform satellite rainfall products to rain gauge observations. This blended product is also
tested against the rain gauge records to verify the improvement of the blended rainfall
products over the original satellite products. Results of blended rainfall products enlightens
few aspects or issues that should consider before applying blending technique including
density of rain gauge network and resolution of TRMM pixel.
TitulacióMÀSTER UNIVERSITARI EN ENGINYERIA DEL TERRENY I ENGINYERIA SÍSMICA (Pla 2009)
Fitxers | Descripció | Mida | Format | Visualitza |
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print_thesis.pdf | 14,90Mb | Visualitza/Obre |