Sand and Dust Storm Measurement

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Sand and Dust Storm Measurement

by EarthdataForumContributor » Tue Aug 20, 2019 1:39 pm America/New_York

On Dec 11, 2017

If I want to realize the quantitative measurement for sand-and-dust storm, is more suitably to use 3mm or 8mm-radar, or Lidar?

How is the effect to detect strong sand-and-dust storm using CALIPSO data?

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Re: Sand and Dust Storm Measurement

by asdc_user_services » Tue Aug 20, 2019 1:54 pm America/New_York

On Dec 11, 2017 the Subject Matter Expert (SME) posted

Radar has a sufficient sensitivity to measure dust in the air. It may be possible to detect some dust storm over the source but the particles size has to be really large (at least larger than 100 micron). Particle size for transported dust is typically around several microns.

Lidar is definitely better than a Radar for dust measurement. The CALIPSO lidar is an effective remote sensing tool for dust profiling. For very dense dust, the CALIPSO lidar may not be able to completely penetrate the dust layer. There may also be some misclassification of very dense dust layers at relatively high altitudes and/or far north over the source region but the fraction should be small.

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