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Alan H. Strahler
Researcher at Boston University
Publications - 287
Citations - 29529
Alan H. Strahler is an academic researcher from Boston University. The author has contributed to research in topics: Bidirectional reflectance distribution function & Albedo. The author has an hindex of 78, co-authored 287 publications receiving 27399 citations. Previous affiliations of Alan H. Strahler include Hunter College & City University of New York.
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Journal ArticleDOI
Global land cover mapping from MODIS: algorithms and early results
Mark A. Friedl,D.K. McIver,J.C.F. Hodges,Xiaoyang Zhang,D. Muchoney,Alan H. Strahler,Curtis E. Woodcock,Sucharita Gopal,Annemarie Schneider,Amanda Cooper,Alessandro Baccini,Feng Gao,Crystal B. Schaaf +12 more
TL;DR: This product provides maps of global land cover at 1-km spatial resolution using several classification systems, principally that of the IGBP, and a supervised classification methodology is used that exploits a global database of training sites interpreted from high-resolution imagery in association with ancillary data.
Journal ArticleDOI
Monitoring vegetation phenology using MODIS
Xiaoyang Zhang,Mark A. Friedl,Crystal B. Schaaf,Alan H. Strahler,John C.F. Hodges,Feng Gao,Bradley C. Reed,Alfredo Huete +7 more
TL;DR: In this article, a new methodology to monitor global vegetation phenology from time series of satellite data is presented, which uses series of piecewise logistic functions, which are fit to remotely sensed vegetation index (VI) data, to represent intra-annual vegetation dynamics.
Journal ArticleDOI
First operational BRDF, albedo nadir reflectance products from MODIS
Crystal B. Schaaf,Feng Gao,Alan H. Strahler,Wolfgang Lucht,Xiaowen Li,Trevor Tsang,Nicholas C. Strugnell,Xiaoyang Zhang,Yufang Jin,Jan-Peter Muller,Philip Lewis,M. J. Barnsley,P. Hobson,Mathias Disney,Gareth Roberts,Michael Dunderdale,Christopher N.H. Doll,Robert P. d'Entremont,Baoxin Hu,Shunlin Liang,Jeffrey L. Privette,David P. Roy +21 more
TL;DR: The MODIS BRDF/Albedo algorithm makes use of a semi-empirical kernel-driven bidirectional reflectance model and multidate, multispectral data to provide global 1-km gridded and tiled products of the land surface every 16 days.
Journal ArticleDOI
The Moderate Resolution Imaging Spectroradiometer (MODIS): land remote sensing for global change research
Christopher O. Justice,Eric Vermote,John R. Townshend,Ruth DeFries,David P. Roy,Dorothy K. Hall,Vincent V. Salomonson,Jeffrey L. Privette,G. A. Riggs,Alan H. Strahler,Wolfgang Lucht,Ranga B. Myneni,Yuri Knyazikhin,Steven W. Running,Ramakrishna R. Nemani,Zhengming Wan,Alfredo Huete,W.J.D. van Leeuwen,Robert E. Wolfe,Louis Giglio,Jan-Peter Muller,Philip Lewis,M.J. Barnsley +22 more
TL;DR: The proposed MODIS standard products for land applications are described along with the current plans for data quality assessment and product validation.
Journal ArticleDOI
The factor of scale in remote sensing
TL;DR: In this paper, the spatial structure of images as a function of spatial resolution is measured for selecting the appropriate scale for remote sensing, and graphs are obtained by imaging the scene at fine resolution and then collapsing the image to successively coarser resolutions while calculating the local variance.