HOPKINS GLOSSARY OF WEATHER TERMS T
- The study of the remote sensing and measurement of quantities.
- An optical or radio instrument used to make accurate measurements
of vertical and horizontal angles; used in tracking instrument
packages on weather balloons and rockets. Optical theodolites
use a telescope to aid in tracking.
- A type of electrical therometer whose electrical resistance
decreases markedly and monotonically as the temperature increases.
This instrument is often used on radiosondes or rocketsondes
- A continuous trace of temperature variation
with time, typically produced by a thermograph.
- A self-recording thermometer that produces a permanent
- Any instrument that measures temperature with a sensor element
that utilizes the variation of the physical properties of a substances
associated with their temperature. Examples include liquid-in-glass
, deformation-type, electrical and radiation
- The region of the earth's atmosphere above the mesopause
, starting at 80 km (50 mi) altitude, where the air temperature
increases with altitude. The thermosphere extends outward toward
space and includes the exosphere and most or all of the
- A miniature receiver-transmitter that can be tracked by a
- The cold region in the earth's atmosphere located about 10
km (8 mi) above the surface, at which the usual vertical temperature
decrease in the troposphere ceases; by convention, the
tropopause is defined as where the temperature lapse rate
to less than 2 C per kilometer for an extended depth (usually
2 km). This boundary marks the top of the troposphere and the
base of the stratosphere, and can vary with season and
latitude, with a altitude ranging from 6 km (4 mi) in polar regions
to 16 km (10 mi) in the tropics
- The lowest region of the earth's atmosphere that extends from
the surface to the tropopause, located at an altitude of
6 to 16 km (4 to 10 mi). Normally this region has a more or less
regular decrease of air temperature with increasing altitude,
considerable vertical wind motion, appreciable water vapor, and
Last update 6 June 1996
Edward J. Hopkins, Ph.D.
Department of Atmospheric and Oceanic Sciences
University of Wisconsin-Madison