Interpretation of observed microwave signatures from ground dual polarization radar and space multi-frequency radiometer for the 2011 Grímsvötn volcanic eruption

Abstract. The important role played by ground-based microwave weather radars for the monitoring of volcanic ash clouds has been recently demonstrated. The potential of microwaves from satellite passive and ground-based active sensors to estimate near-source volcanic ash cloud parameters has been als...

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Bibliographic Details
Published in:Atmospheric Measurement Techniques
Main Authors: M. Montopoli, G. Vulpiani, D. Cimini, E. Picciotti, F. S. Marzano
Format: Article in Journal/Newspaper
Language:English
Published: 2014
Subjects:
Marie-Curie Actions
EC
FP7
SP3-People
European Commission
Atmospheric Science
Iceland
Online Access:https://www.openaccessrepository.it/record/68336
https://doi.org/10.5194/amt-7-537-2014
Description
Summary:Abstract. The important role played by ground-based microwave weather radars for the monitoring of volcanic ash clouds has been recently demonstrated. The potential of microwaves from satellite passive and ground-based active sensors to estimate near-source volcanic ash cloud parameters has been also proposed, though with little investigation of their synergy and the role of the radar polarimetry. The goal of this work is to show the potentiality and drawbacks of the X-band dual polarization (DPX) radar measurements through the data acquired during the latest Grímsvötn volcanic eruptions that took place in May 2011 in Iceland. The analysis is enriched by the comparison between DPX data and the observations from the satellite Special Sensor Microwave Imager/Sounder (SSMIS) and a C-band single polarization (SPC) radar. SPC, DPX, and SSMIS instruments cover a large range of the microwave spectrum, operating respectively at 5.4, 3.2, and 0.16–1.6 cm wavelengths.

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