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Ana M. B. Nunes and John O. Roads

time step of 3 min. The SSM/I–OLR precipitation estimates were provided on a Gaussian grid of about 70 km with defined values from 60°N to 60°S, and then bilinearly interpolated to the ECPC-RSM model grid. 2.3.3.2. One-degree-daily Global Precipitation Climatology Project The one-degree-daily precipitation estimates included into the Global Precipitation Climatology Project (1DD-GPCP; Huffman et al. 2001 ) evaluate the model performance for simulating rainfall patterns for PI and Control

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Edson E. Sano, Laerte G. Ferreira, and Alfredo R. Huete

sensitivity to tropical savanna structures. Because of such complexities and uncertainties of optical and radar sensors, there is a tendency to use the SAR–optical synergism to take advantage of favorable aspects of both sensors simultaneously ( Smith et al. 1995 ; Moran et al. 2002 ). In this study, we conducted a comparative analysis of the performance and complementarility of the L-band σ ° and two vegetation indices, the normalized difference vegetation index (NDVI) and the enhanced vegetation index

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Douglas C. Morton, Ruth S. DeFries, Yosio E. Shimabukuro, Liana O. Anderson, Fernando Del Bon Espírito-Santo, Matthew Hansen, and Mark Carroll

resolution, were also evaluated for their potential to identify new deforestation. Following the technique proposed by Shimabukuro and Smith ( Shimabukuro and Smith 1995 ), blue, red, NIR, and MIR bands at 250-m resolution were used in a linear spectral mixing model to estimate the subpixel fraction of soil, vegetation, and shade ( Anderson et al. 2005a ). Nonideal quality data were excluded from analyses based on information contained in the quality control band. Six data layers from the MOD13 16-day

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Michael Keller, Ruth Varner, Jadson D. Dias, Hudson Silva, Patrick Crill, Raimundo Cosme de Oliveira Jr., and Gregory P. Asner

flowmeter was checked occasionally against a NIST-traceable electronic bubble flowmeter (Gilibrator). The makeup air and standard additions maintained optimum and linear performance of the NO 2 chemiluminescent analyzer (Scintrex LMA-3) according to the manufacturer’s recommendations. The mixed sample stream passed through a Cr 2 O 3 catalyst for conversion of NO to NO 2 ( Levaggi et al. 1974 ). The NO 2 chemiluminescent analyzer was standardized by a two-point calibration approximately hourly

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