Glossary: U

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  1. The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation constitutes only about 5 percent of the total energy emitted from the sun, it is the major energy source for the stratosphere and mesosphere, playing...
  2. United Nations Office for Outer Space Affairs (UNOOSA) through its Platform for for Disaster Management and Emergency Response (UN-SPIDER)
  3. United Nations Economic Commission for Europe
  4. United Nations Environment Programme
  5. The United Nations Office for Disaster Risk Reduction
  6. United Nations Office at Geneva
  7. UNITAR's Operational Satellite Applications Programme
  8. The University of Bonn, the United Nations University Institute for Environment and Human Security (UNU-EHS)
  9. USG
    Under-Secretary General
  10. United States Geological Survey
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