Search Results - "Carrao, H."

Global Changes in Drought Conditions Under Different Levels of Warming by Naumann, G., Alfieri, L., Wyser, K., Mentaschi, L., Betts, R. A., Carrao, H., Spinoni, J., Vogt, J., Feyen, L.

“…Higher evaporative demands and more frequent and persistent dry spells associated with rising temperatures suggest that drought conditions could worsen in many…”
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Development of a Combined Drought Indicator to detect agricultural drought in Europe by Sepulcre-Canto, G, Horion, S, Singleton, A, Carrao, H, Vogt, J

“…This study proposes a drought indicator that combines the Standardized Precipitation Index (SPI), the anomalies of soil moisture and the anomalies of the…”
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Monitoring Drought Conditions and Their Uncertainties in Africa Using TRMM Data by Naumann, G., Barbosa, P., Carrao, H., Singleton, A., Vogt, J.

“…The main objective of this study is to evaluate the uncertainties due to sample size associated with the estimation of the standardized precipitation index…”
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Multitemporal MERIS images for land-cover mapping at a national scale: a case study of Portugal by Carrão, H., Araújo, A., Gonçalves, P., Caetano, M.

“…Medium-spatial-resolution satellite images have already proved to be successful in automatic production of global land-cover maps. However, their operational…”
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Incorporating reference classification uncertainty into the analysis of land cover accuracy by Sarmento, P., Carrão, H., Caetano, M., Stehman, S. V.

“…To accommodate the difficulty of identifying a single 'true' or 'reference' class, the reference data protocol of an accuracy assessment may include…”
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Magnitude of extreme heat waves in present climate and their projection in a warming world by Russo, Simone, Dosio, Alessandro, Graversen, Rune G., Sillmann, Jana, Carrao, Hugo, Dunbar, Martha B., Singleton, Andrew, Montagna, Paolo, Barbola, Paulo, Vogt, Jürgen V.

“…An extreme heat wave occurred in Russia in the summer of 2010. It had serious impacts on humans and natural ecosystems, it was the strongest recorded globally…”
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Contribution of multispectral and multitemporal information from MODIS images to land cover classification by Carrão, Hugo, Gonçalves, Paulo, Caetano, Mário

“…The goal of this study is to evaluate the relative usefulness of high spectral and temporal resolutions of MODIS imagery data for land cover classification. In…”
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A Nonlinear Harmonic Model for Fitting Satellite Image Time Series: Analysis and Prediction of Land Cover Dynamics by Carrao, H., Gonalves, P., Caetano, M.

“…Numerous efforts have been made to develop models to fit multispectral reflectance and vegetation index (VI) time series from satellite images for diverse land…”
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An approach for land cover mapping with multi-temporal MERIS imagery by Capao, L., Carrao, H., Araujo, A., Caetano, M., Carrao, H., Caetano, M.

“…In this paper we present a study exploring the medium spatial resolution images of recently launched ENVISAT MERIS for land cover characterization in Portugal…”
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Retrieving land cover information from MERIS and MODIS Data: a comparative study for landscape characterization in Portugal by Carrao, H., Sarmento, P., Araujo, A., Caetano, M., Carrao, H., Caetano, M.

“…This is a preliminary study in the framework of an ongoing research work that aims at comparing the aptitude of MERIS and MODIS images for land cover mapping…”
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Evaluation of ASAR and optical data synergy for high resolution land cover mapping in portugal by Pinheiro, A., Carrao, H., Caetano, M., Carrao, H., Caetano, M.

“…This paper aims at presenting the usefulness of combining satellite optical data from the visible and infrared wavelengths with longer wavelength radar data…”
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A reference sample database for the accuracy assessment of medium spatial resolution land cover products in Portugal by Carrao, H., Araujo, A., Cerdeira, C., Sarmento, P., Capao, L., Caetano, M.

“…This paper introduces a reference sample database that is being developed by the Remote Sensing Unit of the Portuguese Geographic Institute for the accuracy…”
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