PUFF: A Lagrangian Trajectory Volcanic Ash Tracking Model Introduction

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JVGR Paper
Cleveland
Volcano
Feb 19 2001
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PUFF: A Lagrangian Trajectory Volcanic Ash Tracking Model

PUFF initializes and transports a collection of discrete ash particles, representing a sample of the eruption cloud. Transport includes:

  • Advection:
Four-dimensional U,V gridded wind field data
  • Diffusion:
Turbulence simulated by 'random-walk'
  • Fallout:
Stoke's law

Input: 4D netcdf U and V wind data.
Output: Ash netcdf file (lat,lon,z,t,size).

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Craig Searcy, National Weather Service, Anchorage Forecast Office
Last modified: Fri Jun 15 10:25:43 AKDT 2001 		craig.searcy@noaa.gov