UO Solar Radiation Monitoring Laboratory

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SRML Glossary — "N"

Special thanks to NREL

We'd like to thank the National Renewable Energy Laboratory for making available to us their glossary, which is the basis of ours. We've edited and reformatted it, and linked it to our Web pages, and we'll continue to add our own specialized terms, illustrations, and examples. Please note that the Solar Radiation Monitoring Laboratory takes full responsibility for any inaccuracies that may occur.

Links to other glossary sections:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Nadir
 
  Straight down (toward the center of the Earth).
NCDC
 
  The United States National Climatic Data Center.
NIP
 
  A Normal Incident Pyrheliometer, used to determine the amount of solar irradiance emitted from the direction of the sun. Below is a picture of two NIPs (silver) mounted on a sun-following tracker (white) at the Solar Radiation Research Laboratory. These thermopile-based radiometers have a uniform spectral response from 280 nm to 2800 nm and a 5.7° field of view.

   


NOAA
 
  The United States National Oceanic and Atmospheric Administration.
Non-renewable Energy Source
 
  There is no formal definition for this term. Typical usage defines it as any energy source that is used faster than it is replenished. Standard examples are petroleum products, natural gas, coal, and fissionable materials; the replenishment rates of these energy sources are immensely slow, making it likely that they will become depleted at some time.
Normal Radiation
 
  Radiation striking a surface that is facing the sun. Mathematically, the word normal is the vector (direction) that is perpendicular to a surface, and the direction of a normal radiation source is perpendicular to a radiation source. Global (total) normal solar irradiance is all radiation that strikes a flat surface that faces the sun, while direct normal solar irradiance excludes all radiation that does not come from the direction of the sun in the sky.
NREL
 
  The National Renewable Energy Laboratory, a U. S. National Laboratory specializing in developing technologies and procedures for using renewable energy sources.
NSRDB
 
  The 1961-1990 National Solar Radiation Data Base, which supplies hourly solar and meteorological data from 239 locations in the United States and its territories.
   
Links to other glossary sections:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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© 2000, UO Solar Radiation Monitoring Laboratory.
Last revised: December 11, 2000.


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