Ross Bunn edited Stable Layer Identification Era Interim.tex  almost 9 years ago

Commit id: 7fc5afe7effc5e90fa45a4d0b915be79cff45331

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My goal is to:  \begin{itemize}  \item - identify ETS from observations at many Australian sites (soundings which aren't outflow/rain contaminated)  \item - apply identification methods to Era Int to see how many ETS Era Int identifies  \item - Use Era Int to answer the following questions:  \begin{enumerate}  \item Where and when (monthly, diurnally, seasonally) do ES occur in Australia?  \item What are the typical synoptic situations associated with Australian ES (monthly, diurnally, seasonally)?  \item (Time permitting) Which types of instabilities (moist gravitational, moist symmetric, inertial instabilities) are associated with Australian ES?  \end{enumerate}  \end{itemize}  Colman 1990 - climatology EL TS identified by:  Surface reports of thunderstorms, and 00Z and 12Z sfc, 850hPa, 700 hPa, 50hPa pressure and θe, and the following criteria: 1. Report lies on the cold side of an analysed front, 2. station temp, pressure, dew point consistent with surroundings (reports in mountainous terrain are excluded by this criteria). 3. surface air in warm sector must have higher θe than air on the surface cold side. 4. surface air lifted psuedoadiabatically to 50hPa must have temperatures LESS than 850hPa lifted air temperatures lifted to 50hPa (eliminate poorly analysed surface fronts). Associated with each event were observations of 850 and 50 hPa horizontal wind shear, confluence or diffluence. Reports=1093 Events=497 events (2 rep/event).