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R. A. Sohlberg
Researcher at University of Maryland, College Park
Publications - 11
Citations - 2271
R. A. Sohlberg is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Land cover & Moderate-resolution imaging spectroradiometer. The author has an hindex of 8, co-authored 11 publications receiving 2115 citations.
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Global Percent Tree Cover at a Spatial Resolution of 500 Meters: First Results of the MODIS Vegetation Continuous Fields Algorithm
TL;DR: The first results of the MODIS vegetation continuous field algorithm's global percent tree cover are presented in this article, where a supervised regression tree algorithm is used to estimate tree cover per 500m MODIS pixel.
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Towards an operational MODIS continuous field of percent tree cover algorithm: examples using AVHRR and MODIS data
TL;DR: In this paper, a regression tree algorithm is used to predict the dependent variable of tree cover based on signatures from the multitemporal metrics and a root mean square error (rmse) of 9.06% tree cover was found from the global training data set.
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A new global raster water mask at 250 m resolution
TL;DR: A new water mask product has been created using the SWBD in combination with MODIS 250 m data to create a complete global map of surface water at 250 m spatial resolution and is produced from remotely sensed data and provided to the public in digital format, free of charge.
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Subpixel forest cover in central Africa from multisensor, multitemporal data
Ruth DeFries,Matthew C. Hansen,Marc K. Steininger,Ralph Dubayah,R. A. Sohlberg,John R. Townshend +5 more
TL;DR: In this paper, linear relationships between percent forest cover and 30 multitemporal metrics derived from all AVHRR optical and thermal channels were determined, including mean annual normalized difference vegetation index (NDVI) and mean annual brightness temperature (AVHRR Channel 3) and weakest for those metrics, besides NDVI, based on near-infrared reflectances.
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Shrinking lakes of the Arctic: Spatial relationships and trajectory of change
TL;DR: This paper used global satellite data from the Moderate Resolution Imaging Spectro-radiometer (MODIS) instrument to investigate changes in lakes across Canada between 2000 and 2009, showing a net reduction of more than 6,700 km2 in the surface area of water.