Precipitable Water Over Canada: II Distribution

Lognormal distribution of precipitable water in Hawaii

[1] We use four-year time series of precipitable water (PW) and zenith neutral delay (ZND) derived from a GPS network in Hawaii to show that the statistical distributions of these quantities are closely approximated by the lognormal distribution. The long term average and median values of precipitable water decline exponentially with height, or very nearly so. The arithmetic standard deviation ...

Precipitable water vapour

Variability of GPS-Based Precipitable Water Vapor over Antarctica: Comparison Between Observations and Predictions

This paper presents observations of precipitable water vapor (PWV) from the Global Positioning System (GPS) signals and the surface meteorological measurements. Three stations in Antarctica that are Scott Base (SBA), Casey (CAS1), Macquarie Island (MAC1) and Syowa (SYOG) were taken as the location of observation. For analysis, the data gathered from January to December 2004 are analyzed. The PW...

PIn. II. Comparative evaluation of SSM/I and TMI precipitable water estimate for the Mediterranean Sea

To estimate integrated precipitable water vapour along with liquid water path and water vapour effective profile (i.e. standard atmospheric profile approximation), utilising the SSM/I and TMI radiometers, an operative procedure was developed and assessed. This procedure is based on a fast nonlinear physical inversion algorithm (PIn) developed by the authors. A large data-set of near-coincident ...

Possible Near-II? Channels for Remote Sensing Precipitable Water Vapor from Geostationat-y Satellite Platforms

Remote wssing of tropospheric water vapor profiles from current geostaticmary writher satellites are made using a few broadband infrared (IR) channels in the 6-13-pn~ region. Uncerminties greater than 21N0 exist in derived water vapor values just above the surface from the IR emission measurements. [n this paper, we propose three near-[R channels. one within the O.94-jMr1 water vapor band absor...