Abstract

Millimeter-wave remote sensing technology can significantly improve measurements of volcanic eruptions, yielding new insights into eruption processes and improving forecasts of drifting volcanic ash for aviation safety. Radiometers can measure water vapor density and temperature inside eruption clouds, improving on existing measurements with infrared cameras that are limited to measuring the outer cloud surface. Millimeter-wave radar can measure the 3-D mass distribution of volcanic ash inside eruption plumes and their nearby drifting ash clouds. Millimeter wavelengths are better matched to typical ash particle sizes, offering better sensitivity than longer wavelength existing weather radar measurements, as well as the unique ability to directly measure ash particle size in situ. Here we present sensitivity calculations in the context of developing the water and ash millimeter-wave spectrometer (WAMS) instrument. WAMS, a radar/radiometer system designed to use off-the-shelf components, would be able to measure water vapor and ash throughout an entire eruption cloud, a unique capability.

Original languageEnglish (US)
JournalIEEE Transactions on Geoscience and Remote Sensing
DOIs
StateAccepted/In press - Feb 23 2017

Fingerprint

Ashes
Millimeter waves
Image sensors
Water vapor
water vapor
Radar
ash
volcanic eruption
radar
volcanic ash
radiometer
spectrometer
Radiometers
particle size
wavelength
Spectrometers
Particle size
Meteorological radar
Radar measurement
Wavelength

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)

Cite this

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title = "Measuring Water Vapor and Ash in Volcanic Eruptions With a Millimeter-Wave Radar/Imager",
abstract = "Millimeter-wave remote sensing technology can significantly improve measurements of volcanic eruptions, yielding new insights into eruption processes and improving forecasts of drifting volcanic ash for aviation safety. Radiometers can measure water vapor density and temperature inside eruption clouds, improving on existing measurements with infrared cameras that are limited to measuring the outer cloud surface. Millimeter-wave radar can measure the 3-D mass distribution of volcanic ash inside eruption plumes and their nearby drifting ash clouds. Millimeter wavelengths are better matched to typical ash particle sizes, offering better sensitivity than longer wavelength existing weather radar measurements, as well as the unique ability to directly measure ash particle size in situ. Here we present sensitivity calculations in the context of developing the water and ash millimeter-wave spectrometer (WAMS) instrument. WAMS, a radar/radiometer system designed to use off-the-shelf components, would be able to measure water vapor and ash throughout an entire eruption cloud, a unique capability.",
author = "Sean Bryan and Amanda Clarke and Loyc Vanderkluysen and Christopher Groppi and Scott Paine and Daniel Bliss and James Aberle and Philip Mauskopf",
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AU - Bryan, Sean

AU - Clarke, Amanda

AU - Vanderkluysen, Loyc

AU - Groppi, Christopher

AU - Paine, Scott

AU - Bliss, Daniel

AU - Aberle, James

AU - Mauskopf, Philip

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