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clustering

Artigos

Fractal-based Analysis to Identify Trend Changes in Multiple Climate Time Series

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Ana Maria Heuminski de Avila , Luciana Alvim Santos Romani
Resumo

In the last few decades, huge amounts of climate data have been gathered and stored by several institutions. The analysis of these data has become an important task due to worldwide climate changes and the consequent social and economic effects. In this work, we propose an approach to analyzing multiple climate time series in order to identify intrinsic temporal patterns and trend changes. By deal...

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Artigos

Analysis of NOAA/AVHRR Multitemporal images, climate conditions and cultivated land of sugarcane fields applied to agricultural monitoring

562 visualizações
Jurandir Zullo Junior , Luciana Alvim Santos Romani , Renata Ribeiro do Valle Gonçalves
Resumo

The purpose of this work is to assess the sugarcane yield variation in regional scale through NDVI images from a low resolution spatial satellite. We have used Principal Component Analysis (PCA) and Cluster Analysis to correlate sugarcane cultivated land with multitemporal NDVI images also verifying the influence of climate conditions to them. According to both techniques (PCA and clustering...

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Logotipo do Programa Fapesp de Mudanças Climáticas Processo N.08/58160-5 | Período: 01/12/2010 a 30/11/2014