This technical note is a compilation of the latest clear air turbulence (CAT) forecasting techniques used by AFGWC forecasters. It is a comprehensive treatment of a complex and unique forecasting subject. The methods are relatively easy to follow and are a step-by-step approach to forecasting ...
Bougeault P, Lacarrere P (1989) Parameterization of orography-induced turbulence in a mesobeta-scale model. Mon Weather Rev 117:1872–1890 Article Google Scholar Brown KS, Min C (2000) Volatile Organic Compounds (VOCs) in New Car Interiors. The 15th International Clean Air & Environment Con...
Is there a clear-air turbulence forecast? The unpredictability of clear-air turbulence makes it difficult to forecast, though it is more common during winter months. Experts said the best way to prepare for the phenomenon is stay buckled in while flying. If you're not actively moving about th...
The following article is fromThe Great Soviet Encyclopedia(1979). It might be outdated or ideologically biased. Air Treatment the processing of air to impart to it qualities that meet technological or sanitary-hygienic requirements. Air treatment is widely utilized in hot-air heating, ventilation, ...
An objective technique for forecasting clear-air turbulence (CAT) is described. An index is calculated based on the product of horizontal deformation and vertical wind shear derived from numerical model forecast winds aloft. The forecast technique has been evaluated and is now in operational use at...
A main problem is that turbulence is a phenomenon with a short spatial and temporal range. It is impossible to forecast the fluctuation of atmosphere from the output of numerical prediction models and turbulence observations because of their coarseness and inadequacy. Fortunately, the turbulent kinetic...
10.12 Application and Verification of Clear-Air Turbulence (CAT) Forecast Indices in Korea (2002 - 13ac10av_10aram)Application and Verification of ClearAir Turbulence (CAT) Forecast Indices in Korea ( acavaram)
A technique that statistically integrates information from many numerical turbulence indices, known as the integrated turbulence forecast algorithm (ITFA), was developed in the late 1990s. ITFA first assigns a score to each diagnostic index, based on comparison with available observations at the initial...
it wasn’t bad. What surprised me, however, was that even with an almost calm wind on the ground, in the air it can be rougher than a cob, even on cool days. A 50 degree day with calm winds in Texas would have been as smooth as glass. Here it can border on moderate turbulence...
However, clear-air turbulence (CAT) is difficult to observe in advance of an aircraft's track using remote sensing methods. Furthermore, it is still challenging for aviation meteorologists to forecast CAT, partly because current Numerical Weather Prediction (NWP) models have grid sizes that are ...