Get flash to fully experience Pearltrees
Interpreting Satellite Images. The radiometers flown on satellites are not cameras. Moving mirrors make the radiometer view different regions of the earth.
NOAA satellites use Zulu Time or Coordinated Universal Time (UTC) as their time reference. The satellite images that appear on NOAA's Web sites are stamped in Zulu time. To make the conversion to your local time, see the chart below. Find your local time in the first column. If you are on Eastern Daylight Saving Time (EDT), you would use the second column to find your Zulu Time/UTC.
The majority of satellite imagery that SSEC focuses on, such as GOES, NOAA polar satellites, Aqua/Terra, etc., is geared towards viewing Earth's meteorology, oceanography and climate and does not have the spatial resolution to see things like people or cars. For example, the MODIS instrument on the Aqua and Terra satellites has a resolution of 250 meters which means that it can't resolve anything smaller than that. However, the WisconsinView organization which operates here at SSEC does work with high resolution satellite imagery that could be of use for observing smaller scale objects/places on the ground. Specifically, WisconsinView maintains a free online archive of civilian public domain color satellite imagery and aerial photos of Wisconsin with spatial resolutions ranging from 15cm (6-inch) to 250m (273yds).
Sources: World Resources Institute (WRI) : The Last Frontier Forests: Ecosystems and Economies on the Edge (1997) Greenpeace : The Worlds Last Intact Forest Landscapes (2006) United Nations Food and Agriculture Organization : Global Forest Resources Assessment 2005 Tools used: PHP(+Ming for flash counter) & MySQL: XAMPP , World Borders Dataset (+chartAPI-icon idea): thematicmapping.org (mentioned here , here , here , here , here , here , here , here , here , here , here , here , here , here , here ) <p style="text-align:right;color:#A8A8A8"></p>
Now that I’ve *finally* finished the series on how to meet or beat most of Google Earth Plus’s features without paying for it, here’s a one-post set of links to all the posts in the series. Google Earth Plus – Do You Really Need It? Brief summary of what features Google Earth Plus has, and which ones there are free solutions for. Importing GPS Data Into Google Earth I – Proprietary software and EasyGPS
GIS Resources Follow the links below to find the available Web Mapping Services (WMS), along with descriptions and instructions on how to use the services. Emergency Operations Baseline Open the following link in ArcGIS or your web browser: <Please select a service to construct a URL> Emergency Operations Post Event Open the following link in ArcGIS or your web browser: <Please select a service to construct a URL> <p style="text-align:right;color:#A8A8A8"></p>