Figura:Earth Western Hemisphere.jpg

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Descrission
English: “Blue Marble”. Original caption:
Much of the information contained in this image came from a single remote-sensing device-NASA’s Moderate Resolution Imaging Spectroradiometer, or MODIS. Flying over 700 km above the Earth onboard the Terra satellite, MODIS provides an integrated tool for observing a variety of terrestrial, oceanic, and atmospheric features of the Earth. The land and coastal ocean portions of these images are based on surface observations collected from June through September 2001 and combined, or composited, every eight days to compensate for clouds that might block the sensor’s view of the surface on any single day. Two different types of ocean data were used in these images: shallow water true color data, and global ocean color (or chlorophyll) data. Topographic shading is based on the GTOPO 30 elevation dataset compiled by the U.S. Geological Survey’s EROS Data Center. MODIS observations of polar sea ice were combined with observations of Antarctica made by the National Oceanic and Atmospheric Administration’s AVHRR sensor—the Advanced Very High Resolution Radiometer. The cloud image is a composite of two days of imagery collected in visible light wavelengths and a third day of thermal infra-red imagery over the poles. Global city lights, derived from 9 months of observations from the Defense Meteorological Satellite Program, are superimposed on a darkened land surface map.
Data
Sorgiss http://visibleearth.nasa.gov/view.php?id=57723
Autor
  • Reto Stöckli (land surface, shallow water, clouds)
  • Robert Simmon (enhancements: ocean color, compositing, 3D globes, animation)
  • Data and technical support: MODIS Land Group; MODIS Science Data Support Team; MODIS Atmosphere Group; MODIS Ocean Group
  • Additional data: USGS EROS Data Center (topography); USGS Terrestrial Remote Sensing Flagstaff Field Center (Antarctica); Defense Meteorological Satellite Program (city lights).
Àutre version Derivative works of this file:  Environment Barnstar new.png

Licensa

Public domain Questo file è nel pubblico dominio perché creato dalla NASA. La politica sul copyright della NASA afferma che «il materiale della NASA non è protetto da copyright a meno che non sia specificato altrimenti». (NASA copyright policy e JPL Image Use Policy).
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Data e OraMiniaduraAmzureUtentComent
dël dì d'ancheuj05:09, 25 Aos 2005Miniadura dla version ëd 05:09, 25 Aos 20052 048 × 2 048 (579 KByte)Tom{{PD-USGov-NASA}} http://earthobservatory.nasa.gov/Newsroom/BlueMarble/Images/globe_west_2048.jpg Much of the information contained in this image came from a single remote-sensing device-NASA’s Moderate Resolution Imaging Spectroradiometer, or MODIS.

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