W. Scott Lincoln

Posted by: ScottLincoln, 6:25 PM GMT op 30 april 2012

The Mesocyclone Detection Algorithm (MDA) is the rotation algorithm from GR2Analyst. The MDA produces a Rotation (ROT) product which is invisible to the user and a Normalized Rotation (NROT) product which is visible to the user. Mesocyclone and TVS icons are based upon the results of the NROT calculation. The algorithm is described below,
and also in more detail in the powerpoint presentation GR2Analyst
Algorithms in WFO Operations (Lincoln, 2012), which was presented to the
National Weather Service (NWS) Weather Forecast Office (WFO) New
Orleans/Baton Rouge and subsequently through the Southern Region NWS
seminar series.

The MDA algorithm is based upon:
Smith, T.M., and Elmore, K.L., 2004: The Use of Radial Velocity Derivative to Diagnose Rotation and Divergence. 11th Conf. on Aviation, Range, and Aerospace. Hyannis, MA. Amer. Meteor. Soc.

Full write-up on the GR2Analyst MDA algorithm

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GR2Analyst Hail Algorithm (POSH/MEHS)

Posted by: ScottLincoln, 5:42 PM GMT op 30 april 2012

Probability of Severe Hail (POSH) and Maximum Estimate Hail Size (MEHS) are the hail algorithm outputs from GR2Analyst. The algorithm is described below, and also in more detail in the powerpoint presentation GR2Analyst Algorithms in WFO Operations (Lincoln, 2012), which was presented to the National Weather Service (NWS) Weather Forecast Office (WFO) New Orleans/Baton Rouge and subsequently through the Southern Region NWS seminar series.The hail algorithm is based ...

Updated: 5:47 PM GMT op 30 april 2012

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Blog/Online Comment Statement

Posted by: ScottLincoln, 11:30 PM GMT op 20 december 2011

As specified by the NOAA Scientific Integrity Policy....Comments posted online by me through my Weather Underground account or any social networking site such as Facebook reflects my personal and/or professional opinion, but may not reflect the official opinion of NOAA and National Weather Service.

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Hydrologist/Cartographer at the NOAA National Weather Service River Forecast Center in Slidell, LA. M.S. Environmental Science Certificate GIS

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