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File:Earth Western Hemisphere.jpg

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原始文件 （2,048 × 2,048像素，文件大小：579 KB，MIME类型：image/jpeg）

摘要

描述
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.
日期
来源 http://visibleearth.nasa.gov/view.php?id=57723
作者
  • 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).
其他版本
  • Eastern Hemisphere in PNG format
    Eastern Hemisphere in PNG format
  • Western Hemisphere in PNG format
    Western Hemisphere in PNG format
  • Eastern Hemisphere in JPEG format
    Eastern Hemisphere in JPEG format
  • Eastern Hemisphere in TIFF format
    Eastern Hemisphere in TIFF format
  • Western Hemisphere in TIFF format
    Western Hemisphere in TIFF format
  • Hemispheres side by side
    Hemispheres side by side
此文件衍生的作品：  Environment Barnstar new.png

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Public domain 本文件完全由NASA创作，在美国属于公有领域。根据NASA的版权方针，NASA的材料除非另有声明否则不受版权保护。（参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。）
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当前2005年8月25日 (四) 03:092005年8月25日 (四) 03:09版本的缩略图2,048 × 2,048（579 KB）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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