gov.usgs.gfl:cafram_20000621_1.tif U.S. Geological Survey (USGS) 20090714 The Global Fiducials Library is a long term archive of images, from U.S. National Imagery Systems, which represents a long term periodic record for selected scientifically important sites. The Global Fiducials Library was created to be the collection, archive, and data management component of the Global Fiducials Program. 20000621 ground condition Complete Variable -1.254347 0.763175 85.124847 84.963714 GLOBAL FIDUCIALS CLIMATE CHANGE ATMOSPHERE OCEAN LAND USE GEOLOGY SNOW AND ICE CLIMATE USGS GLOBAL FIDUCIALS ARCTIC ANTARCTICA UNITED STATES 1 NONE NONE Unknown Unknown U.S. Geological Survey (USGS) 20090714 Reston, VA U.S. Geological Survey (USGS) Internet Download 20000621 ground condition NA U.S. National Imagery Systems The production procedures, instrumentation, hardware and software used in the collection of these datasets vary depending on systems used at U.S. Geological Survey facilities. The process step describes a general process used to create these orthorectified images. The orthorectification process used sensor information along with digital elevation data to generate an orthoimage. When mosaics were created, a fully automated, highly accurate cross-sensor image registration algorithm was used or semi-automated procedures using tie points were used depending on the commercial software package. Each orthoimage is cast on the Universal Transverse Mercator (UTM) projection on the 1984 World Geodetic System (WGS-84) using one of five resampling kernels: Nearest Neighbor, Bilinear Interpolation, Exponential, Cubic Convolution, or AutoFleming-Sharpness. All files were generated as unsigned eight-bit integers in GeoTiff tiled format with LZW compression applied. GeoPDF files were created from the GeoTiff using JPEG compression (80 percent quality) based on a two standard deviation stretch. In some cases, no stretch has been applied in the conversion process. 20090714 71 330 19 Raster unsigned eight-bit integer Pixel 16978 18530 Universal Transverse Mercator 31N 0.9996 3 0 500000 0 row and column 1.000000 1.000000 meters WGS-84 6378137 298.257 U.S. Geological Survey mailing address

12201 Sunrise Valley Drive

Reston VA 20192 US 1-800-ASK-USGS info@usgs.gov http://gfl.usgs.gov/ Monday - Friday, 6:00 - 18:00 Eastern Standard Time http://gfl.usgs.gov/ GeoTiff or GeoPDF The U.S. Geological Survey (USGS) provides these geographic data "as is". The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the delivery, installation, operation, or support by the USGS. GeoTIFF Tiled 6.0 LZW http://gfl.usgs.gov/outgoing/gfl/cafram/2000/cafram_20000621_1_tif.zip GeoPDF 1.7 PDF Version 1.7 (Acrobat 8.x) http://gfl.usgs.gov/outgoing/gfl/cafram/2000/cafram_20000621_1_pdf.zip None 20090714 U.S. Geological Survey mailing address

12201 Sunrise Valley Drive

Reston VA 20192 US 1-800-ASK-USGS info@usgs.gov http://gfl.usgs.gov/ Monday - Friday, 6:00 - 18:00 Eastern Standard Time http://gfl.usgs.gov/ FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 Extensions for Remote Sensing Metadata, FGDC-STD-012-2002 http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf Solar_Elevation_Angle solarele integer 0 <= Solar_Elevation_Angle <= 90 Acquisition_Information Optional The angle at the viewed point between the horizon and the Sun, in degrees. The Solar_Elevation_Angle is provided which describes the position of the sun in the sky relative to the horizon. This is different from the Solar_Zenith_Angle which describes the position of the sun relative to the zenith (this parameter is also provided in this metadata). U.S. Geological Survey