HOPKINS GLOSSARY OF WEATHER TERMS S
- Any quantity that can be described sufficiently by its magnitude;
compare with a vector quantity. Examples of scalar quantities
include temperature and air pressure.
- The component of an instrument that converts the input signal
into a useable output signal.
- The direct line-of-sight distance between two objects not
necessarily at the same altitude; compare with horizontal range
- The process that the radiometer sensors onboard
a geosynchronous satellite samples the air temperature
at various levels of the atmosphere, based upon the amount of
infrared radiation that is emitted from that level. Contrast with
the image (or scanning) mode.
- Any probe of the environment made to obtain information at
various levels. In meteorology, the term often is used synonymously
with measurement of atmospheric conditions aloft (upper-air observation)
made by a radiosonde, but may also include those made by
a dropsonde, meteorological rocket or satellite
sounder. The term also refers to the plot of temperature,
dewpoint and wind measurements on a thermodynamic diagramor
other graph with temperature as the horizontal axis (dependent
variable) and pressure as the vertical axis (independent variable).
sun synchronous satellite
Last update 6 June 1996
Edward J. Hopkins, Ph.D.
Department of Atmospheric and Oceanic Sciences
University of Wisconsin-Madison