precipitable water


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precipitable water

[pri′sip·əd·ə·bəl ′wȯd·ər]
(meteorology)
The total atmospheric water vapor contained in a vertical column of unit cross-sectional area extending between any two specified levels, commonly expressed in terms of the height to which that water substance would stand if completely condensed and collected in a vessel of the same unit cross section. Also known as precipitable water vapor.
References in periodicals archive ?
Smith, 2004: Rapid retrieval and assimilation of ground based GPS precipitable water observations at the NOA A Forecast Systems Laboratory: Impact on weather forecasts.
As a rule of thumb, apart from the effects of topography, precipitable water in humid regions is generally larger than that in arid regions.
Klein, "Measurement of low amounts of precipitable water vapor using ground-based millimeterwave radiometry," Journal of Atmospheric and Oceanic Technology, Vol.
and Ware, R.H.: 1994, GPS Meteorology: Mapping zenith wet delays onto precipitable water, Journal of Applied Meteorology, 33, 379-386.
Tuller, S.E., 1968: World distribution of mean monthly and annual precipitable water .
Transforming the obtained zenith wet delays into precipitable water vapour may now be done if the weighted mean temperature of the atmosphere is known ([T.sub.m]).
Downed trees and power outages were a common complaint as the latest of three frontal systems brought more wind and what the National Weather Service referred to as "very high precipitable water values" - that means rain - to Lane County.
By reducing the number of input parameters to three (the atmospheric integral transparency coefficient, precipitable water, the Angstrom wavelength exponent) and the associated formulas to one (instead of 13), we succeeded in considerable simplification of the initial model and converted it to a handy and flexible tool for the calculation of AOT[lambda].
The potential of sunphotometer data from the AERONET/AEROCAN network for monitoring of Arctic aerosols is illustrated, using examples of the multiyear variation of aerosol optical properties and atmospheric precipitable water vapour content at some stations, and in particular at Bonanza Creek, Alaska since 1994.
Errors detected by DGPS are determined by the atmosphere and, in particular, by the integrated precipitable water vapor in the signal paths from the satellite to ground reference stations.
According to Seth Gutman, a systems analyst in FSL's Demonstration Division and the GPS integrated precipitable water vapor (GPS-IPW) project leader, GPS satellite radio signals are slowed by the earth's atmosphere, which results in a delay in the arrival of a signal as compared to propagation in free space.
Disc 1 contains monthly mean normalized difference vegetation index, precipitable water index, calibrated albedos from AVHRR channels 1 and 2, calibrated temperatures from AVHRR channels 4 and 5, and standard deviations of tile same parameters.