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False Color Merged IR Visualization now available!

With a web browser and few mouse clicks, users can produce visualizations for all 8 years and 4.5 TB of Merged IR Brightness Temperature data and generate False Color IR imagery and animation without downloading any software and data.

The GES DISC Hurricane Data Analysis Tool  has now added the capability to animate false color images of NCEP/CPC 4-km Global (60°N - 60°S) Merged IR Brightness Temperature Dataset in addition to the previously available grayscale images. With a web browser and few mouse clicks, users can produce visualizations for all 8 years and 4.5 TB of Merged IR Brightness Temperature data and generate False Color IR imagery and animation, as well as grayscale, without downloading any software and data, a priori. This is an important addition to the current collection of multi-sensor datasets already in the system, namely, Tropical Rainfall Measuring Mission (TRMM) precipitation, TRMM Microwave Imager (TMI) sea surface temperature (SST), NASA's daily Quick Scatterometer (QuikSCAT) ocean surface wind, NCEP Reanalysis sea level pressure (SLP) and NCEP Reanalysis winds.

To access this capability with the tool, the Merged IR dataset must be selected. When this selection is made, the Dataset box will provide a choice between "Black and White" and "False Color". After selecting False Color, the geographical area, time increment, and temporal criteria can then be entered. Note that selecting extended time periods with a large number of images will greatly increase the time required to generate the animation.

When the animation is generated, it appears as an Animated GIF image. To save the image as an Animated GIF, Windows users will need to right-click on the image, then enter the name of the animation, including the ".gif" suffix, in the "Save Image As" field. Macintosh users will have to adapt these instructions for their operating system. You could insert these saved animated images in your PowerPoint for presentations.

More information is available in the Hurricane Data Analysis Tool FAQ

disc.sci.gsfc.nasa.gov/hurricane/analysisFAQ.shtml

An animation of Hurricane Katrina generated with the False Color option in the Hurricane Data Analysis Tool is shown below

katrina_hurricane_tool_animation.gif

Note that this animation was generated with the Pre-Defined palette; Dynamic and Custom palettes can also be used.

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Last updated: May 27, 2010 04:15 PM ET
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