Sat, 26 Jul 2008 17:21:14 BST CiteULike: neteler clouds http://www.citeulike.org/user/neteler/tag/clouds CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/neteler/article/1457805 <i>Remote Sensing of Environment, Vol. 83, No. 1-2. (November 2002), pp. 3-15.</i><br /><br />Data from the first Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on the NASA Terra Platform are being used to provide a new generation of land data products in support of the National Aeronautics and Space Administration (NASA)'s Earth Science Enterprise, global change research and natural resource management. The MODIS products include global data sets heretofore unavailable, derived from new moderate resolution spectral bands with spatial resolutions of 250 m to 1 km. A partnership between Science Team members and the MODIS Science Data Support Team is producing data sets of unprecedented volume and number for the land research and applications. This overview paper provides a summary of the instrument performance and status, the data production system, the products, their status and availability for land studies. An overview of MODIS Land data processing and product status CO Justice JRG Townshend EF Vermote E Masuoka RE Wolfe N Saleous DP Roy JT Morisette Remote Sensing of Environment, Vol. 83, No. 1-2. (November 2002), pp. 3-15. 2007-07-15T16:47:49-00:00 2002 Remote Sensing of Environment 83 1-2 3 15 clouds evi fpar modis ndvi npp remote-sensing snow time-series http://www.citeulike.org/user/neteler/article/937370 <i>Solar Energy, Vol. 73, No. 5. (November 2002), pp. 307-317.</i><br /><br />We present a new simple model capable of exploiting geostationary satellite visible images for the production of site/time-specific global and direct irradiances The new model features new clear sky global and direct irradiance functions, a new cloud-index-to-irradiance index function, and a new global-to-direct-irradiance conversion model. The model can also exploit operationally available snow cover resource data, while deriving local ground specular reflectance characteristics from the stream of incoming satellite data. Validation against 10 US locations representing a wide range of climatic environments indicates that model performance is systematically improved, compared to current visible-channel-based modeling practice. A new operational model for satellite-derived irradiances: description and validation R Perez P Ineichen K Moore M Kmiecik C Chain R George F Vignola Solar Energy, Vol. 73, No. 5. (November 2002), pp. 307-317. 2006-11-09T09:17:17-00:00 2002 Solar Energy 73 5 307 317 clouds energy irradiation remote-sensing