- Industry: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
An instrument for measuring temperature by utilizing the variation of the physical properties of substances according to their thermal states. Thermometers may be classified into six types according to their construction: gas thermometer, liquid-in-glass thermometer, deformation thermometer, electrical thermometer, liquid-in- metal thermometer, and sonic thermometer. See Also thermograph.
Industry:Weather
An instrument designed to study very small fluctuations of some quantity. The microbarograph is an example of a recording pressure variometer. A common form is an instrument designed to measure small changes in altitude by sensing small pressure changes.
Industry:Weather
An increase/decrease in the mean water level on a beach due to the effects of waves running up the beach and breaking. Set-down occurs prior to breaking, and set-up after breaking. Under some conditions the set- up can be large enough to contribute to local flooding and overtopping of sea defenses.
Industry:Weather
An image processing technique where a second image is created that is an out- of-focus (blurred, low-pass filtered) version of the original. The second image's pixel values are subtracted from the corresponding pixel values in the original image, enhancing detail in the image. Its use (and terminology) dates back to early photographic techniques.
Industry:Weather
An expression of the length of time it takes for water to travel from some designated geographical location of the watershed to another, or from some identifiable time on the histogram of the runoff-causing event to the time of peak or centroid of the storm hydrograph.
Industry:Weather
An estimate of wind vectors in the middle and upper troposphere obtained by tracking water vapor targets between successive satellite images.
Industry:Weather
An atmospheric wave disturbance embedded in a mean westerly flow, such as in the midlatitudes. Compare easterly wave.
Industry:Weather
An electrostatic type of electrometer that utilizes a single fiber as the sensitive element. A quartz fiber, coated with conducting material, is mounted midway between two electrical plates, across which a potential is applied. Then a charge is placed on the fiber and its deflection is noted against a scale in the eyepiece of the observing telescope. Compare bifilar electrometer.
Industry:Weather
An electrometer that makes use of the amplifying properties of specially designed vacuum tubes. These instruments are more rugged than the electrostatic electrometer and possess the additional advantage of being easily converted into self-registering instruments.
Industry:Weather
