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GLOSSARY


Our comprehensive glossary is available to assist in your understanding of the S'COOL lesson plan vocabulary words. Please select the first letter of the word you wish to check for a definition and further information.


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All definitions


Weather word translations
R
radiation budget:
The Earth's radiation budget describes the balance of sunlight entering the Earth system, and reflected sunlight and emitted heat leaving the Earth. This is the focus of CERES measurements.   See also Energy Budget Earth Radiation Budget Illustration
R
Radiosonde:
A balloon-borne instrument that measures meteorological parameters from the Earth's surface up to 20 miles in the atmosphere. The radiosonde measures temperature, pressure, and humidity, and transmits or "radios" these data back to Earth. Upper air winds also are determined through tracking of the balloon ascent. Radiosonde observations generally are taken twice a day (0000 and 1200 UTC) around the globe. NOAA's National Weather Service (NWS) operates a network of about 90 radiosonde observing sites in the U.S. and its territories. When the balloons burst, radiosondes return to Earth on a parachute. Approximately 25 percent are recovered and returned to NWS for reconditioning and reuse..  
R
rain:
moisture falling in the form of a droplet resulting from vapor that has been condensed in the atmosphere.   Rain Storm
Image courtesy NASA/Sean Smith
R
rainfall:
the amount of water in rain that fell over a certain area on Earth during a certain amount of time.  
R
rain gauge:
an instrument to record the amount of rainfall in a given area over a set period of time.   Rain Gauge
R
range:
The difference between the highest and lowest numbers in a set of data.  
R
record:
(1)anything that has the ability to show proof of a past event. (2) having the highest or lowest point in a particular data set (i.e yesterdays temperature set the record for the highest temperature in the states history.).  
R
recycle:
To produce a new item using an old item. To reprocess inorganic materials.  
R
reduce:
To use less of a resource.  
R
reflection:
the return of sound or light back to its source. In the atmosphere, the process where incoming solar rays are redirected back upwardly after striking particles. Cloud water and ice account for most reflection of solar radiation.   Diagram of reflection and refraction
Image courtesy University of Virginia
R
relative humidity:
the ratio between the amount of water vapor in the air and the amount required for saturation; depends on atmospheric temperature and pressure.  
R
remote sensing:
Obtaining information about a subject, as with a camera, without being in contact with it. This term is now commonly used in conjunction with electromagnetic techniques for acquiring information. That is, techniques which image part of the electromagnetic spectrum (i.e., visible light, infrared energy (heat), X-rays, ultraviolet light, etc...).  
R
report:
share the findings of an experiment or other research.  
R
reuse:
To use an item more than once.  
R
rotate:
to turn about a central axis.  
R
rotation:
the act of turning about a central axis.  
R
row:
a side-by-side arrangement of objects in a long continual line or strip.