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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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Atmos. Meas. Tech., 7, 537-552, 2014
https://doi.org/10.5194/amt-7-537-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
19 Feb 2014
Interpretation of observed microwave signatures from ground dual polarization radar and space multi-frequency radiometer for the 2011 Grímsvötn volcanic eruption
M. Montopoli4,1,5, G. Vulpiani2, D. Cimini3,5, E. Picciotti5,6, and F. S. Marzano4,5 1Department of Geography, University of Cambridge, Cambridge, UK
2Department of Civil Protection, Rome, Italy
3IMAA-CNR, Tito scalo, Potenza, Italy
4Dep. of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, Rome, Italy
5CETEMPS, University of L'Aquila, L'Aquila, Italy
6Himet srl, L'Aquila, Italy
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.

Citation: Montopoli, M., Vulpiani, G., Cimini, D., Picciotti, E., and Marzano, F. S.: Interpretation of observed microwave signatures from ground dual polarization radar and space multi-frequency radiometer for the 2011 Grímsvötn volcanic eruption, Atmos. Meas. Tech., 7, 537-552, https://doi.org/10.5194/amt-7-537-2014, 2014.
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