Climate Change terms starting with U

14 terms

  1. ultraviolet radiation (UL-truh-VY-oh-let RAY-dee-AY-shun) Invisible rays that are part of the energy that comes from the sun.
  2. Ultraviolet Radiation (UV) The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation constitutes only about 5 percent of the total energy…
  3. Unfinished oils All oils requiring further refinery processing, except those requiring only mechanical blending.
  4. United Nations Framework Convention on Climate Change (UNFCC) The international treaty unveiled at the United Nations Conference on Environment and Development (UNCED) in June 1992.
  5. United Nations Framework Convention on Climate Change (UNFCCC) The Convention on Climate Change sets an overall framework for intergovernmental efforts to tackle the challenge posed by climate change.
  6. Unmanned Aerospace Vehicle (UAV) Program A U.S. Department of Energy program that uses an unmanned aerospace vehicle and occupied aircraft to make key climate measurements that cannot be made my…
  7. Unstable Air Air that is able to rise easily, and has the potential to produce clouds, rain, and thunderstorms.
  8. Upper air observation Upper air observation An observation made in the free atmosphere either directly or indirectly.
  9. Upper atmosphere Upper atmosphere The general term applied to the atmosphere above the mesopause.
  10. Upper-air Weather Chart Weather maps that are produced for the portion of the atmosphere above the lower troposphere, generally at and above 850 mb.
  11. Upwelling In ocean dynamics, the upward motion of sub-surface water toward the surface of the ocean. This is often a source of cold, nutrient-rich water.
  12. upwelling longwave irradiance The rate at which radiant energy, at a wavelength longer than approximately 4 µm, is being emitted upwards into a radiation field and transferred across…
  13. upwelling shortwave radiance The rate at which radiant energy, at a wavelength between 0.4 and 4 µm, is being emitted upwards into a radiation field and transferred across a surface…
  14. UTC By international agreement, the local time at the prime meridian, which passes through Greenwich, England.