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Institute of Atmospheric Sciences and Climate, National Research Council
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- PublicationRestrictedAerosol extinction coefficient profile retrieval in the oxygen A-band considering multiple scattering atmosphere.Test case: SCIAMACHY nadir simulated measurements.(2006)
; ; ;Corradini, S.; Università di Modena e Reggio Emilia ;Cervino, M.; Istituto di Scienze dell’Atmosfera e del Clima, Consiglio Nazionale delle Ricerche, Bologna, Italy; A multiple scattering inversion procedure for the aerosol extinction coefficient profile retrieval and error assessment in the oxygen A-band, for passive remote sensing instruments, has been developed. The procedure has been applied to SCIAMACHY nadir simulated measurements to investigate its effectiveness in the troposphere. The inversion procedure consists of a multiple scattering Forward Model, an inversion method and a complete sensitivity and error assessment tool. The Forward Model is based on LIDORT code; the inversion method, the sensitivity study and the complete error assessment are based on Optimal Estimation. The sensitivity and error analysis has been derived to investigate the profile retrieval errors due to the uncertainty of different aerosol optical properties, molecular and surface parameters. The analysis confirms that the profile retrieval accuracy and vertical resolution are strongly dependent on the oxygen A-band spectral resolution. The moderately high SCIAMACHY spectral resolution (0.4 nm in the oxygen A-band) results in distinguishing a maximum of three aerosol layers in troposphere. The SCIAMACHY tropospheric aerosol profile retrieval is shown to be highly sensitive to aerosol optical properties as phase function and single scattering albedo. The sensitivity study reveals an improvement of information content increasing the solar zenith angle and decreasing the surface albedo. As regards the forward model, negligible errors occur as the number of streams exceeds 6.184 35 - PublicationOpen AccessGROUND-BASED MONITORING OF PINATUBO AEROSOLS AND OZONE AT L'AQUILA, ITALY: EVIDENCES FOR OZONE DEPLETION DURING 1991/92 WINTER MONTHS(1993-01)
; ; ; ; ; ; ; ;D'Altorio, A.; Dipartimento di Fisica, Università di L'Aquila ;Masci, F.; Dipartimento di Fisica, Università di L'Aquila ;Pitari, G.; Dipartimento di Fisica, Università di L'Aquila ;Visconti, G.; Dipartimento di Fisica, Università di L'Aquila ;Rizi, V.; ING ;Cervino, M.; FISBAT CNR ;Giovanelli, G.; FISBAT CNR; ; ; ; ; ; Possible evidence for stratospheric ozone depletion at Northern mid-latitudes as a consequence of the Pinatubo aerosol cloud is presented in this work. A ten month record of aerosol and ozone measurements taken at the lidar station of L'Aquila, Italy is compared to the 1985-1986 SBUV and SAGE II ozone data. Ozonesonde data collected in the station of Hohenpeissenberg, Germany and S. Pietro Capofiume, Italy are used to validate the DIAL measurements corrected for the aerosol presence.155 128 - PublicationRestrictedIs the ‘peaceful use’ of outer space being ruled out?(2003-11)
; ; ; ;Cervino, M.; Institute of Atmospheric Sciences and Climate, National Research Council ;Corradini, S.; Università di Modena e Reggio Emilia ;Davolio, S.; Institute of Atmospheric Sciences and Climate, National Research Council; ; Dual-use space technology poses a threat to the original peaceful mandate of scientific research, being de facto a proxy for future military confrontation in space. Following the example of the USA, the European Union and consortia of European nations are starting to flatten the barriers between military, commercial and scientific missions and programmes, under pressure from security issues and to protect their economic investments in space. While arguing against the militarization of the space environment, this article presents a summary of the potential benefits and drawbacks of the rise of dual use in the European scenario. It then discusses the Italian Cosmo-SkyMed mission as an example of Europe's move towards dual-use technology. Some suggestions are made for enforcing the peaceful use of outer space, such as maintaining free data availability and providing for greater public and scientific say in missions.176 36