JSM 2004 - Toronto

Abstract #301922

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Activity Number: 314
Type: Contributed
Date/Time: Wednesday, August 11, 2004 : 9:00 AM to 10:50 AM
Sponsor: Section on Statistical Graphics
Abstract - #301922
Title: Two Way ("Hour-Month") Time-section Plots as a Tool for Climatological Visualization and Summarization
Author(s): Charles Fisk*+
Companies: Naval Base Ventura County
Address: , Newbury Park, CA, 91320,
Keywords: climatic/oceanographic data visualization ; contour plots ; diurnal/seasonal time-section plots
Abstract:

This study discusses and demonstrates the utility of two-way ("hour-month") time-section plots as a means of visualizing single station climatological or oceanographic data, a mode of presentation certainly not unknown but not believed to be widely used in practice. Data of these kind usually reside in tabular, digitized form, but the recent advent of data analysis/visualization software and desktop computing power makes it feasible to "transform" multiple digital summaries of these kind into single page graphical layouts that give a comprehensive visual feel for the seasonal/diurnal variations of parameter(s) of interest. The graphs also lend themselves to effective presentation on the web. In this mode, calendar month comprises the y-axis, hour of the day the x-axis. Upon the grid, climatic or oceanographic variables are contoured, represented by symbols, or colored. Multiple contour are also possible, and sunrise/sunset demarcation lines can be overlain. Derived variables such as mean vector wind/constancy are also represented effectively in this manner. A number of charts types are presented and explained.


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