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Dip. Ingegeneria e Fisica dell’Ambiente, Università della Basilicata, Potenza, Italy
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- PublicationOpen AccessAn Intercomparison of Precipitable Water Vapor Measurements Obtained During the ECOWAR Field Campaign(2009-03-11)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Fiorucci, I.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Muscari, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Bianchi, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Di Girolamo, P.; Dipartimento di Ingegneria e Fisica dell'Ambiente, Università della Basilicata, Potenza, Italy ;Esposito, F.; Dipartimento di Ingegneria e Fisica dell'Ambiente, Università della Basilicata, Potenza, Italy ;Grieco, G.; Dipartimento di Ingegneria e Fisica dell'Ambiente, Università della Basilicata, Potenza, Italy ;Summa, D.; Dipartimento di Ingegneria e Fisica dell'Ambiente, Università della Basilicata, Potenza, Italy ;Bianchini, G.; Istituto di Fisica Applicata "Nello Carrara", IFAC-CNR, Sesto Fiorentino, Firenze, Italy ;Palchetti, L.; Istituto di Fisica Applicata "Nello Carrara", IFAC-CNR, Sesto Fiorentino, Firenze, Italy ;Cacciani, M.; Dipartimento di Fisica, Università di Roma "La Sapienza", Roma, Italy ;Di Iorio, T.; Dipartimento di Fisica, Università di Roma "La Sapienza", Roma, Italy ;Pavese, G.; Istituto di Metodologie per l’Analisi Ambientale, IMAA-CNR, Tito Scalo, Potenza, Italy ;Cimini, D.; CETEMPS, Dipartimento di Fisica, Università di L’Aquila, L’Aquila, Italy ;de Zafrah, R. L.; Department of Physics and Astronomy, and Institute for Terrestrial and Planetary Atmospheres, State University of New York, Stony Brook, U.S.A.; ; ; ; ; ; ; ; ; ; ; ; ; In this study we present an intercomparison of measurements of very low water vapor column content obtained with a Ground-Based Millimeter-wave Spectrometer (GBMS), Vaisala RS92k radiosondes, a Raman Lidar, and an IR Fourier Transform Spectrometer. These sets of measurements were carried out during the primary field campaign of the ECOWAR (Earth COoling by WAter vapor Radiation) project which took place on the Western Italian Alps from 3 to 16 March, 2007.403 271 - PublicationOpen AccessLidar research activities in Potenza, Southern Italy(2003)
; ; ; ; ; ;Di Girolamo, P.; Lidar research activities in Potenza,Southern Italy ;Amodeo, A.; Lidar research activities in Potenza,Southern Italy ;Pandolfi, M.; Lidar research activities in Potenza,Southern Italy ;Pappalardo, G.; Lidar research activities in Potenza,Southern Italy ;Cuomo, V.; Lidar research activities in Potenza,Southern Italy; ; ; ; The lidar group in Potenza has almost 10 years' experience in the field of lidar research. Important results have been accomplished both in aerosol and water vapour research. The lidar system in Potenza has acquired different confi gurations during the years, always preserving the capability to accomplish two wavelength aerosol and water vapour Raman measurements. An important up-grade was the introduction of a water vapour DIAL channel in 1997. The lidar system in Potenza has been involved in several aerosol and water vapour measurement campaigns: stratospheric aerosol measurement campaign (1994-1995); LITE correlative measurement campaign (September 1994); Water Vapour Intensive Observation Period (January-February 1997); EARLINET project (since February 2000). A second lidar system, primarily dedicated to water vapour Raman measurements, is under development and starting January 2002 will go through an intensive observation period dedicated to the validation of sensors on-board ENVISAT (principally GOMOS, MIPAS and SCIAMACHY). This paper summarises some of the major results accomplished, as well as expected results from the forthcoming campaigns.163 332 - PublicationRestrictedRetrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm −1(2008-09-29)
; ; ; ; ; ; ; ; ; ; ; ; ;Serio, C.; Dip. Ingegeneria e Fisica dell’Ambiente, Università della Basilicata, Potenza, Italy ;Masiello, G.; Dip. Ingegeneria e Fisica dell’Ambiente, Università della Basilicata, Potenza, Italy ;Esposito, F.; Dip. Ingegeneria e Fisica dell’Ambiente, Università della Basilicata, Potenza, Italy ;Di Girolamo, P.; Dip. Ingegeneria e Fisica dell’Ambiente, Università della Basilicata, Potenza, Italy ;Di Iorio, T.; Dip. Fisica, Università di Roma ”La Sapienza”, Roma, Italy ;Palchetti, L.; Istituto di Fisica Applicata ”Nello Carrara”, IFAC-CNR, Firenze, Italy ;Bianchini, G.; Istituto di Fisica Applicata ”Nello Carrara”, IFAC-CNR, Firenze, Italy ;Muscari, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Pavese, G.; Istituto di Metodologie per l’Analisi Ambientale, IMAA-CNR, Potenza, Italy ;Rizzi, R.; Dip. Fisica, Università di Bologna, Bologna, Italy ;Carli, B.; Istituto di Fisica Applicata ”Nello Carrara”, IFAC-CNR, Firenze, Italy ;Cuomo, V.; Istituto di Metodologie per l’Analisi Ambientale, IMAA-CNR, Potenza, Italy; ; ; ; ; ; ; ; ; ; ; The paper presents a novel methodology to retrieve the foreign-broadened water vapor continuum absorption coefficients in the spectral range 240 to 590 cm−1 and is the first estimation of the continuum coefficient at wave numbers smaller than 400 cm−1 under atmospheric conditions. The derivation has been accomplished by processing a suitable set of atmospheric emitted spectral radiance observations obtained during the March 2007 Alps campaign of the ECOWAR project (Earth COoling by WAter vapor Radiation). It is shown that, in the range 450 to 600 cm−1, our findings are in good agreement with the widely used Mlawer, Tobin-Clough, Kneizys-Davies (MT_CKD) continuum. Below 450 cm−1 however the MT_CKD model overestimates the magnitude of the continuum coefficient.320 27 - PublicationRestrictedMeasurements of low amounts of precipitable water vapor by millimeter wave spectroscopy: An intercomparison with radiosonde, Raman lidar, and Fourier transform infrared data(2008-07)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Fiorucci, I.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Muscari, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Bianchi, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Di Girolamo, P.; Università della Basilicata ;Esposito, F.; Università della Basilicata ;Grieco, G.; Università della Basilicata ;Summa, D.; Università della Basilicata ;Bianchini, G.; Istituto di Fisica Applicata, CNR ;Palchetti, L.; Istituto di Fisica Applicata, CNR ;Cacciani, M.; Università di Roma "La Sapienza" ;Di Iorio, T.; Università di Roma "La Sapienza" ;Pavese, G.; Istituto di Metodologie per l'Analisi Ambientale, CNR ;Cimini, D.; Università di L'Aquila ;de Zafra, R.; State University of New York at Stony Brook; ; ; ; ; ; ; ; ; ; ; ; ; Observations of very low amounts of precipitable water vapor (PWV) by means of the Ground-Based Millimeter wave Spectrometer (GBMS) are discussed. Low amounts of column water vapor (between 0.5 and 4 mm) are typical of high mountain sites and polar regions, especially during winter, and are difficult to measure accurately because of the lack of sensitivity of conventional instruments to such low PWV contents. The technique used involves the measurement of atmospheric opacity in the range between 230 and 280 GHz with a spectral resolution of 4 GHz, followed by the conversion to precipitable water vapor using a linear relationship. We present the intercomparison of this data set with simultaneous PWV observations obtained with Vaisala RS92k radiosondes, a Raman lidar, and an IR Fourier transform spectrometer. These sets of measurements were carried out during the primary field campaign of the Earth Cooling by Water vapor Radiation (ECOWAR) project which took place at Breuil-Cervinia (45.9N, 7.6E, elevation 1990 m) and Plateau Rosa (45.9N, 7.7E, elevation 3490 m), Italy, from 3 to 16 March 2007. GBMS PWV measurements show a good agreement with the other three data sets exhibiting a mean difference between observations of 9%. The considerable number of data points available for the GBMS versus lidar PWV correlation allows an additional analysis which indicates negligible systematic differences between the two data sets.286 31 - PublicationRestrictedSpectrally resolved observations of atmospheric emitted radiance in the H2O rotation band(2008-02)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Bhawar, R.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Bianchini, G.; Istituto di Fisica Applicata Nello Carrara, CNR, Sesto Fiorentino, Italy ;Bozzo, A.; Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy ;Cacciani, M.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;Calvello, M. R.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Carlotti, M.; Dipartimento di Chimica Fisica ed Inorganica, Universita` di Bologna, Bologna, Italy ;Castagnoli, F.; Istituto di Fisica Applicata Nello Carrara, CNR, Sesto Fiorentino, Italy ;Cuomo, V.; Istituto di Metodologie per l’Analisi Ambientale, CNR, Tito Scalo, Italy ;Di Girolamo, P.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Di Iorio, T.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;Di Liberto, L.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;di Sarra, A.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;Esposito, F.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Fiocco, G.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;Fuà, D.; Dipartimento di Fisica, Universita di Roma La Sapienza, Roma, Italy ;Grieco, G.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Maestri, T.; Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy ;Masiello, G.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Muscari, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Palchetti, L.; Istituto di Fisica Applicata Nello Carrara, CNR, Sesto Fiorentino, Italy ;Papandrea, E.; Dipartimento di Chimica Fisica ed Inorganica, Universita` di Bologna, Bologna, Italy ;Pavese, G.; Istituto di Metodologie per l’Analisi Ambientale, CNR, Tito Scalo, Italy ;Restieri, R.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Rizzi, R.; Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy ;Romano, F.; Istituto di Metodologie per l’Analisi Ambientale, CNR, Tito Scalo, Italy ;Serio, C.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Summa, D.; Dipartimento di Ingegeneria e Fisica dell’Ambiente, Universita` della Basilicata, Potenza, Italy ;Todini, G.; Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy ;Tosi, E.; Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; This paper presents the project Earth Cooling by Water Vapor Radiation, an observational programme, which aims at developing a database of spectrally resolved far infrared observations, in atmospheric dry conditions, in order to validate radiative transfer models and test the quality of water vapor continuum and line parameters. The project provides the very first set of far-infrared spectral downwelling radiance measurements, in dry atmospheric conditions, which are complemented with Raman Lidar-derived temperature and water vapor profiles.261 32 - PublicationOpen AccessCharacterization of atmospheric aerosol optical properties based on the combined use of a ground-based Raman lidar and an airborne optical particle counter in the framework of the Hydrological Cycle in the Mediterranean Experiment - Special Observation Period 1Vertical profiles of the particle backscattering co-efficient at 355, 532 and 1064 nm measured by the University of Basilicata Raman lidar system (BASIL) have been compared with simulated particle backscatter profiles obtained through a Mie scattering code based on the use of simultaneous and almost co-located profiles provided by an airborne optical particle counter. Measurements were carried out during dedicated flights of the French research aircraft ATR42 in the framework of the European Facility for Airborne Research (EUFAR) project “WaLiTemp”, as part of the Hydrological Cycle in the Mediterranean Experiment –Special Observation Period 1 (HyMeX-SOP1). Results from two selected case studies are reported and discussed in the paper, and a dedicated analysis approach is illustrated and ap-plied to the dataset. Results reveal a good agreement between measured and simulated multi-wavelength particle backscattering profiles. Specifically, simulated and measured particle backscattering profiles at 355 and 532 nm for the second case study are found to deviate less than 15 % (mean value=5.9 %) and 50 % (mean value=25.9 %), respectively, when considering the presence of a continental–urban aerosol component, while slightly larger deviation values are found for the first study. The reported good agreement between measured and simulated multi-wavelength particle backscatter profiles testifies to the ability of multi-wavelength Raman lidar systems to infer aerosol types at different altitudes.
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