Name
Title | ||
|---|---|---|
Remote sensing of volcanic ash: Synergistic use of ash models and microwave observations of the erupting plumes |
Abstract | ||
|---|---|---|
The goal of this work is to show potentials and drawbacks of Dual Polarization measurements of volcanic plume from microwave ground-based X-band radar (DPX). Measurements of brightness temperature (BT) from the space-orbiting microwave radiometer are used as well and compared with DPX retrievals of total columnar content (TCC). The latter is estimated from the radar variables using the volcanic ash radar retrieval for dual-polarization X band systems (VARR-PX) algorithm whereas BT's have been acquired from the Special Sensor Microwave Imager/Sounder (SSMIS). Model simulations of volcanic plume evolution are generated to carry out comparisons with radar estimates of TCC. The Active Tracer High-Resolution Atmospheric Model (ATHAM) of eruption plume is used for this purpose. Results show that high- spatial-resolution DPX radar data identify an evident volcanic plume signature, even though the interpretation of the polarimetric variables and the related retrievals is not always easy, likely due to the possible formation of ash and ice particle aggregates, the radar signal depolarization induced by turbulence effects, and the partial filling of the radar beam. A forth degree polynomial relationship is in good agreement with BT - TCC measured samples with correlation of -0.71. The variability of TCC, described by the ATHAM simulations, seems to include the spatial and temporal variation of the radar retrievals. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/IGARSS.2013.6721256 | IGARSS |
Keywords | Field | DocType |
radiometry,volcanic eruption plume,remote sensing,microwave radiometry,spatial variation,partial filling,radar variables,volcanic plume signature,total columnar content,atham simulations,space-orbiting microwave radiometer,brightness temperature measurements,radar beam,atmospheric turbulence,temporal variation,mesoscale model,polarimetric variables,active tracer high-resolution atmospheric model,volcanic eruption,volcanic plume evolution,erupting plumes,remote sensing by radar,ash,dual-polarization x band system algorithm,volcanology,volcanic ash models,weather radar,model simulations,ice particle aggregates,geophysical signal processing,forth degree polynomial relationship,special sensor microwave imager/sounder,ice,radiometers,radar resolution,dpx retrievals,microwave observations,turbulence effects,volcanic ash radar retrieval,microwave ground-based x-band radar,radar signal depolarization,dual polarization measurements,polynomials,radar polarimetry,high-spatial-resolution dpx radar data,radar,atmospheric modeling | Radar,SSMIS,Interferometric synthetic aperture radar,Weather radar,Computer science,Space-based radar,Synthetic aperture radar,Remote sensing,Special sensor microwave/imager,Volcanic ash | Conference |
ISSN | ISBN | Citations |
2153-6996 | 978-1-4799-1114-1 | 0 |
PageRank | References | Authors |
0.34 | 3 | 6 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mario Montopoli | 1 | 59 | 17.34 |
| Michael Herzog | 2 | 4 | 1.14 |
| Gianfranco Vulpiani | 3 | 82 | 16.53 |
| domenico cimini | 4 | 69 | 19.16 |
| Frank S. Marzano | 5 | 41 | 15.92 |
| Hans Friedrich Graf | 6 | 4 | 1.14 |