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Enhanced-V

A Satellite Severe Storm Signature

S. Bachmeier, B. Motta, A. Mostek and D. Bikos

Introduction

This case reviews the use of the enhanced-V signature in the GOES-IR data. Previous studies by McCann(1981) have indicated the value of real-time satellite data in detecting and monitoring severe thunderstorms.

The goal of this teletraining session is to review the correct identification and interpretation of the enhanced-V.

Prerequisites

This is a basic course.

Prior to attending this session on the enhanced-V satellite signature, you should review the following materials:

Training Session Options

  1. Live VISIT teletraining (with an instructor leading the session). Check the VISIT Training Calendar to signup for teletraining. The session will last 60 minutes. This teletraining session uses the VISITview software, where a Windows PC with an Internet connection is needed.

    Please follow the teletraining installation instructions to install the session

  2. VISITview playback without Audio - You may step through the VISITview file on your own to view the presentation. If talking points are available, you may use these in tandem with going through the slides.

    Create a directory to download the playback file from the following site: http://rammb.cira.colostate.edu/training/visit/training_sessions/enhanced-v/enhanced-v.exe

    After extracting the files into that directory click on the visitlocal.bat file to start the lesson. Advance slides on your own using the navigation controls (i.e., the Next button will advance to the next slide)

Review and Final Remarks

This training installment used the 29 March 1998 Minnesota tornado case to provide an analysis of the enhanced-V satellite signature using GOES data. This signature is an important indicator of severe weather which can be used during weather warning operations to augment radar information. Also shown are imagery from the Jarrell, Texas tornado outbreak. Of particular interest with this case, is the 1km IR AVHRR data which was available for an interesting comparison with GOES.

References/Additional Links

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