Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1971
DC Field | Value | Language |
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dc.contributor.authorall | Remitti, M.; Dipartimento di Ingegneria dei Materiali e dell’Ambiente, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
dc.contributor.authorall | Pugnaghi, S.; Dipartimento di Ingegneria dei Materiali e dell’Ambiente, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
dc.contributor.authorall | Teggi, S.; Dipartimento di Ingegneria Meccanica e Civile, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
dc.date.accessioned | 2006-12-07T14:40:22Z | en |
dc.date.available | 2006-12-07T14:40:22Z | en |
dc.date.issued | 2006-02 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1971 | en |
dc.description.abstract | This work focuses on the evaluation of Aerosol Optical Thickness (AOT) in Mt. Etna volcano area starting from the analysis of MIVIS VIS images. MIVIS images and ancillary data (atmospheric profiles, photometric measurements, atmospheric infrared radiances, surface temperatures, ground reflectances, SO2 abundances) were collected during the «Sicily ’97» campaign. Data elaboration was performed with extensive use of 6S radiative transfer model, determining optical thickness with an inversion algorithm that uses atmospheric vertical profile, ground reflectance data and radiance measured by the first MIVIS spectrometer (channels 1-20; range 0.44-0.82 n). Ground reflectance is the most problematic parameter for the algorithm. In order to have a low and ‘uniform’ surface reflectance, only pixels located at an altitude between 2000-3000 m a.s.l. were analysed. At this altitude,AOT is very low during non-eruptive periods: at Torre del Filosofo (2920 m a.s.l.) on June 16th 1997, during one MIVIS flight, AOT at 0.55 n was 0.19. The uncertainty about ground reflectance produces significant errors on volcanic background AOT, and in some cases the error is up to 100%. The developed algorithm worked well on volcanic plume, allowing us to determine the plume related pixels’AOT. High plume AOT values minimize the problems deriving from reflectance uncertainty. Plume optical thickness shows values included in a range from 0.5 to 1.0. The plume AOT map of Mt. Etna volcano, derived from a MIVIS image of June 16th 1997, is presented. | en |
dc.format.extent | 6123768 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 1/49 (2006) | en |
dc.subject | remote sensing | en |
dc.subject | aerosol optical thickness | en |
dc.subject | Mt. Etna volcano | en |
dc.subject | MIVIS | en |
dc.subject | 6S | en |
dc.title | Mt. Etna aerosol optical thickness from MIVIS images | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
dc.relation.references | ACKERMAN, S.A. (1997): Remote sensing aerosols using satellite infrared observations, J. Geophys. Res., 102 (14), 17069-17079. BUONGIORNO, M.F., L. MERUCCI, F. DOUMAZ, S. SALVI, M. P. BOGLIOLO, S. PUGNAGHI, S. TEGGI, S. CORRADINI, L. LOMBROSO, A. STERNI, T. CALTABIANO and V. CARRÉRE (1999): MVRRS campaign: MIVIS mission on Sicilian volcanoes and ground measurements, Quad. Geofis., 7, pp. 90. DAEDALUS (1996): MIVIS Technical Specifications, Daedalus Enterprises. IGNATOV, A. and L. STOWE (2002a): Aerosol retrievals from individual AVHRR channels, Part I. Retrieval algorithm and transition from Dave to 6S radiative transfer model, J. Atmos. Sci., 59 (3), 313-334. IGNATOV, A. and L. STOWE (2002b): Aerosol retrievals from individual AVHRR channels, Part II. Quality control, probability distribution functions, information content, and consistency checks of retrievals, J. Atmos. Sci., 59 (3), 335-362. MOULA, M., J. VERDEBOUT and H. EVA (2002): Aerosol optical thickness retrieval over the Atlantic Ocean using GOES imager data, Phys. Chem. Earth, 27 (35), 1525- 1531. PEARLMAN, J., C. SEGAL, P. CLANCY, N. NELSON, P. JARECKE, M. ONO, D. BEISO, L. LIAO, K. YOKOYAMA, S. CARMAN, B. BROWNE, L. ONG and S. UNGAR (2001): The EO-1 Hyperion Imaging Spectrometer (available on line at: http://eo1.usgs.gov/documents/hyperionpub.asp). PORTER, J.N., K.A. HORTON, P.J. MOUGINIS-MARK, B. LIENERT, S. K. SHARMA, E. LAU, A.J. SUTTON, T. ELIAS and C. OPPENHEIMER (2002): Sun photometer and LIDAR measurements of the plume from the Hawaii Kilauea Volcano Pu’u O’o vent: aerosol flux and SO2 lifetime, Geophys. Res. Lett., 29 (16), 1783. PRATA, A.J. (1989): Infrared radiative transfer calculation for volcanic ash clouds, Geophys. Res. Lett., 16 (11), 1293-1296. REMITTI, M. (2001): Sviluppo di tecniche di telerilevamento per il monitoraggio di aerosol e nubi vulcaniche, Tesi di Laurea (Università degli Studi di Modena e Reggio Emilia). REMITTI, M., S. PUGNAGHI, S. TEGGI and F. PARMIGGIANI (2006): Retrieval of tropospheric ash clouds of Mt. Etna from AVHRR data, in Proceedings of the Mid Term Meeting of the GNV Project on Remote Sensing, 24-25 January 2002, Catania, Quad. Geofis. (in press). SCHNEIDER, D.J., W.I. ROSE, L.R. COKE, G.J.S. BLUTH, I.E. SPROD and A.J. KRUEGER (1999): Early evolution of a stratospheric volcanic eruption cloud as observed with TOMS and AVHRR, Geophys. Res. Lett., 104 (4), 4037- 4050. SIMPSON, J.J., G. HUFFORD, D. PIERI and J. BERG (2000): Failures in detecting volcanic ash from a satellite-based technique, Remote Sensing Environ., 72, 192-217. VERMOTE, E., D. TANRÉ, J.L. DEUZÉ, M. HERMAN and J.J. MORCRETTE (1997): Second Simulation of the Satellite Signal in the Solar Spectrum (6S), 6S User Guide Version 2 (University of Maryland, Dept. Of Geograph/ Laboratoire d’Optique Atmospherique, Lille). WATSON, I.M. and C. OPPENHEIMER (2000): Particle size distributions of Mount Etna’s aerosol plume constrained by sun photometry, J. Geophys. Res., 105 (8), 9823-9829. WEN, S. and W.I. ROSE (1994): Retrieval of sizes and total masses of particles in volcanic clouds using AVHRR bands 4 and 5, J. Geophys. Res., 99 (3), 5421-5431. | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Remitti, M. | en |
dc.contributor.author | Pugnaghi, S. | en |
dc.contributor.author | Teggi, S. | en |
dc.contributor.department | Dipartimento di Ingegneria dei Materiali e dell’Ambiente, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
dc.contributor.department | Dipartimento di Ingegneria dei Materiali e dell’Ambiente, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
dc.contributor.department | Dipartimento di Ingegneria Meccanica e Civile, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Dipartimento di Ingegneria dei Materiali e dell’Ambiente, Università degli Studi di Modena e Reggio Emilia, Modena, Italy | - |
crisitem.author.dept | Università di Modena e Reggio Emilia | - |
crisitem.author.dept | Dipartimento di Ingegneria dei Materiali e dell Ambiente (Osservatorio Geofi sico), Università di Modena e Reggio Emilia, Modena, Italy | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
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17 Remitti.pdf | 5.98 MB | Adobe PDF | View/Open |
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