Storm climatology

Spatial climatology

The TrackGridStats application produces analyses of storm tracks over extended periods of time, such as complete seasons or multiple seasons. The output is in the form of 2-D grids which contain information on the spatial variability of various storm properties.

The following figures show some of the properties which may be computed in this way. The properties are for the month of August 1995 using data from the Front Range NEXRAD near Denver.

Spatial climatology of storm volume

This is overlain with the climatology of storm motion.

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Spatial climatology of storm area

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Spatial climatology of storm precipitation

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Spatial climatology of storm duration

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Spatial climatology of storm tops

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Spatial climatology of maximum storm refectivity

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Aggregate climatology

The TracksAscii application produces ASCII tables of storm and track properties, which can then be analyzed by a suitable statistics package. Two categories of property are produced:

Instantaneous storm properties

Aggregate track properties

The following figures demonstrate some of the ways in which this data may be analyzed. The data for this analysis was obtained from the Mile High radar, near Denver, for the summer seasons 1991 through 1993.

Lognormal fit to precipitation area

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Lognormal fit to precipitation flux

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Lognormal fit to swath area

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Lognormal fit to storm tops

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Lognormal fit to maximum speed

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Lognormal fit to maximum reflectivity

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Lognormal fit to area time integral (ATI)

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Exponential fit to duration > 15 min

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Radar estimated rain volume vs. Area time integral

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Volume vs. mean reflectivity

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Precipitaiton area vs. volume

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