V. Cuomo | Consiglio Nazionale delle Ricerche (CNR) (original) (raw)

Papers by V. Cuomo

2011 3rd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2011

... the optical distortions occurring inside the scan head both spectral and spatial, ie the so c... more ... the optical distortions occurring inside the scan head both spectral and spatial, ie the so called spectral ???smile??? and ???keystone ... It incorporates photogrammetric bundle adjustment solutions to produce orthocorrected imagery utilizing precision IMU/GPS and terrain height data from ...

Journal of Geophysical Research: Atmospheres, 2001

The potential of NOAA-advanced very high resolution radiometer (AVHRR) time series for environmen... more The potential of NOAA-advanced very high resolution radiometer (AVHRR) time series for environmental studies was investigated at the pixel scale. We analyzed a multitemporal set of annual maximum value composite (MVC) of normalized difference vegetation index. Local area coverage data of middle and southern Italy were processed from measurements taken between 1985 and 1999 of the afternoon viewing of NOAA 9, 11, and 14. Significant artificial anomalies were found due to satellite switch, shortwave calibration instability and illumination effects. We removed such systematic errors and achieved a strong reduction of standard deviation values (around 50%). Interesting results were obtained from a change detection analysis performed at the pixel level. Outcomes from satellite-based analysis were compared with independent time series data, such as ancillary meteorological data, forest fire archives, and results from field surveys. Results showed that the geographical areas where MVC data indicated a decrease in vegetation activity match well with areas affected by forest fires, intense human activity, or rapid decline of coniferous forests. In contrast, an increase in MVC was found in regions recently involved in a growth of intensive farming or invaded by alien plants which are now recognized as a threat to native species. Our exploratory results indicate that high-quality AVHRR data can profitably support studies on interannual dynamics of surface parameters. In particular, our parameterization of illumination and calibration adjustments can be directly applied to Mediterranean-like ecosystems. 1. Introduction The large amount of information stored in NOAA advanced very high resolution radiometer (AVHRR) data might be very useful in environmental studies, out from the meteorology framework the NOAA satellite series was designed for. The spectral characteristics and availability of data for the last 20 years make AVHRR an attractive support for estimations of space/temporal dynamics of surface parameters, such as temperature and vegetation indexes. Unfortunately, AVHRR time series are strongly affected by systematic errors, due to calibration residuals of the shortwave channels [

Geophysical Research Letters, 2008

Atmospheric Chemistry and Physics, 2009

Indoor and outdoor water soluble trace elements (TEs) were analyzed on quasi-ultrafine (UF), accu... more Indoor and outdoor water soluble trace elements (TEs) were analyzed on quasi-ultrafine (UF), accumulation, and coarse PM filter samples collected at four retirement communities, three located in the San Gabriel Valley and one in Riverside, CA. Our analysis indicates that a complex mix of vehicular, industrial, and soil-related emissions was responsible for the elemental concentrations measured at the three San Gabriel sites, while regional transport, soil re-suspension and, to a lower degree, local traffic contributed to TE levels observed in Riverside. In the quasi-UF mode, the magnitude of indoor/outdoor concentration ratios (I/O) for elements of anthropogenic origin was highly variable, reflecting the spatial heterogeneity of combustion sources in the study area. Indoor/outdoor ratios in accumulation mode PM were closer to 1, and more homogeneous across sites, indicating that elements associated with this size fraction penetrate indoors with high efficiencies. The lowest overall I/O ratios were obtained for elements found in coarse particles, consistent with the fact that only a small portion of coarse outdoor PM infiltrates indoors. The potential of S and other TEs to serve as tracers of indoor-penetrated particles of outdoor origin was also examined. Our results suggest that using the I/O ratio of S (I/O S) as a surrogate of the infiltration factor for PM 2.5 [Finf(PM 2.5)] might lead to an overestimation of the indoor PM 2.5 originating outdoors. This is in contrast with what was reported in previous studies conducted in the Eastern US, where S has been consistently used as a reliable tracer of outdoor PM 2.5 infiltrating indoors. Our differences

International Journal of Remote Sensing, 2001

Advanced Very High Resolution Radiometer (AVHRR)-based fire detection methods are considered in t... more Advanced Very High Resolution Radiometer (AVHRR)-based fire detection methods are considered in this work in order to assess their effective usefulness in the framework of civil programmes for fire risk and damage mitigation. The discussion is divided into the evaluation of the ...

Revue de Physique Appliquée, 1986

ABSTRACT

53rd EAEG Meeting, 1991

In this paper we are concerned with the problem of picking out the useful signal from noisy volta... more In this paper we are concerned with the problem of picking out the useful signal from noisy voltage recordings in geoelectrical prospecting. The voltage time series, recorded at the measuring probes of the electrodic array is made up of the sum of a deterministic component, the response of medium to the energizing current, and a random noise component.

Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science, 2001

In this work we describe the main features of a new prototype of remote station able to jointly d... more In this work we describe the main features of a new prototype of remote station able to jointly detect electrical and seismometric parameters. The measuring station has been installed at Tito site on the Southern Apennine chain, one of the most seismic active areas of the Mediterranean region; it combines new technologies for the data acquisition with a robust statistical technique to discriminate anomalous fluctuations from background noise in the recorded signals. The completely automatic station is equipped with sensors able to detect self-potential signals (16 channels, A/D 24 bit, sampling rate of 0.25Hz) and a 1Hz three directional seismometer connected to an acquisition unit having a dynamics of 133 dB. After a preliminary filtering procedure, mainly devoted to remove all the influences due to meteo-climatic parameters and/or cultural electrical noise, a software developed ad hoc to study the possible correlation between anomalous patterns in electrical signals and local microseismic activity was employed. In particular, the instrumental features of the new station allow us to compare the fluctuations of electrical signa& detected at short temporal scales, with seismic events with low magnitude (M<3), that are not revealed by the national seismometric network (National Institute of Geophysics). The analysis of the first results obtained during the 1999 confirms us that the station could be largely used in a geophysical monitoring network operating in seismic active areas.

Lettere al Nuovo Cimento Series 2, 1984

ABSTRACT

Air pollution is one of the most pressing environmental problems which affects likewise urban, in... more Air pollution is one of the most pressing environmental problems which affects likewise urban, industrial and rural areas. Environmental planners, regulators and decision makers need reliable, scientifically based tools to find out strategies for controlling air pollution in a cost-effective way, taking into account the whole productive system. In this framework the basic elements of energyenvironmental planning have to be extended to include also waste processing technologies amongst the usually considered pollution sources. Bottom-up optimizing models, based on linear programming techniques and customized for specific cases, represent a powerful tool in energy-environmental management. This paper focuses on the integrated modeling of material flows and energy system performed on a local scale case study (Basilicata Region, Southern Italy) using the linear programming model IEA-MARKAL. We have evaluated the feasibility of the model in representing the waste management system to estimate the environmental impact of the waste processing technologies in the context of the whole productive system. A sensitivity analysis has been carried out to emphasize the connections between tariffs, waste disposal technologies assessment and atmospheric emissions.

Proceedings. 2004 International Conference on Information and Communication Technologies: From Theory to Applications, 2004., 2004

In this work, we present an implementation of an open federated framework allowing discovery and ... more In this work, we present an implementation of an open federated framework allowing discovery and interoperability of disparate geographic information resources-i.e. Imagery, Gridded and Coverage Data stemming from Earth Observation. The framework is an example of a Service-Oriented Architecture (SOA), participated by heterogeneous computational resources according to the publish-find-bind paradigm. Such framework has been developed and experimented in the context of the COS(OT) project: part of the Italian National Operating Program (PON) on Scientific and Technological Research and High Education. The framework service architecture, as well as its information, computation and technology views are described. The presented technology framework implements some concepts of a Spatial Data Infrastructure for Environmental Sciences datasets.

Il Nuovo Cimento C, 1981

... Brindisi 40.65 Pantelleria 36.82 Capo Mele 43.95 Pescara 42.43 Capo Palinuro 40.02 Pian Ros&#... more ... Brindisi 40.65 Pantelleria 36.82 Capo Mele 43.95 Pescara 42.43 Capo Palinuro 40.02 Pian Ros'~ 42.43 Crotone 39.07 Pianosa 42.58 Gela 37.08 Pisa 43.67 ... Capo ~ele 0.22 Pescara 0.32 CapoPalinuro 0.20 Plan Ros~ 0.23 Crotone 0.24 Pianosa 0.16 G ela 0.17 Pisa 0.31 ...

Daily global solar-radiation sequences are studied for Italy. We show that the experimental data ... more Daily global solar-radiation sequences are studied for Italy. We show that the experimental data can be described as a first-order autoregressive stochastic process independent of locality or season: the only climatic information needed is the monthly average of the clearness index. We also show that tile clearness index sequences can be transformed in sequences with normal distribution but with the same autocorrelation properties; it is then easy to construct synthetic sequences of radiation data with the same statistical properties as the real data, useful for performance prediction of solar systems.

High Spectral Resolution Infrared Remote Sensing for Earth’s Weather and Climate Studies, 1993

Spectra recorded by Michelson interferometer spectrometers are usually distorted because the spec... more Spectra recorded by Michelson interferometer spectrometers are usually distorted because the spectrometers have a finite resolving power. Indeed, although the radiance spectrum is obtained in principle by a Fourier transform of the interferogram, various factors intervene to make the recovered spectrum an imperfect representation of the true spectrum. The most important ones are: a)- aperture effects; b)- tilt and aberrations; c)- phase and compensation; d)- truncation; e)- noise.

Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, 1999

The main objective of this work has been to evaluate the potential of integration of satellite da... more The main objective of this work has been to evaluate the potential of integration of satellite data and topographic factor, in order to achieve improved performance in forest fire danger estimation. Existing AVHRR-based fire danger estimation methods (a review is specifically made) aim at obtaining fire susceptibility classification exploiting, mainly, the temporal evolution of NDVI, and Surface Temperature (Ta). In this work fire danger estimation has been performed integrating satellite data with fuel type and topographic factors. In order to evaluate the reliability of the estimated indices, the timespace distribution of actual forest fires, provided by the Italian Forestry service, has been used. Preliminary results are very promising; they have shown that in the summer of 1 996, a large number of forest fires occurred in the estimated higher danger areas.

Lidar and Atmospheric Sensing, 1995

The lidar in-space technology experiment (LITE) has been developed at the NASA Langley Research C... more The lidar in-space technology experiment (LITE) has been developed at the NASA Langley Research Center to fly on the Space Shuttle and demonstrate the utility of lidar systems in space. An extensive correlative measurements campaign to validate LITE measurements with coincident measurements made with reliable ground-based and balloon-borne sensors was carried out both in Napoli and Potenza in the period September 10-19, 1994. The lidar in Napoli is based on a Xe:F excimer laser (351 nm), while the lidar in Potenza is based on a Nd:YAG laser operating both on the 2nd (532 nm) and 3rd (355 nm) harmonic. During this intense campaign we performed both elastic and Raman measurements for molecular nitrogen. Solar irradiance spectra at ground level were measured by an Optical Spectra Analyzer in the spectral region 0.4-1.1 micrometers , obtaining both columnar water vapor and aerosol load. Aerosol backscattering data will be presented. Elastic and nitrogen Raman signals are used for measuring atmospheric transmissivity. Finally the density and temperature profiles obtained from the simultaneous measurement of the elastic and the N2 Raman signal will be presented. Simultaneous radiosonde measurements of temperature, pressure, and relative humidity will be used to compare lidar data.

Lidar techniques are widely used to measure atmospheric aerosols and water vapour concentration a... more Lidar techniques are widely used to measure atmospheric aerosols and water vapour concentration and therefore they can be efficiently employed to validate ENVISAT products. An intensive aerosol and water vapour lidar measurement campaign, started on July 2002, is in progress at IMAA-CNR in Tito Scalo (PZ) (Southern Italy, 40^o36'N, 15^o44'E, 820 m above sea level) in the frame of the validation program of ENVISAT. A Raman lidar system is used to perform both aerosol and water vapour measurements; aerosol backscatter and extinction coefficients are retrieved from simultaneous elastic signals at 355 nm and inelastic N_2 Raman backscatter lidar signals at 386.6 nm, whereas, water vapour mixing ratio measurements are retrieved from simultaneous H_2O and N_2 Raman signals. Systematic measurements will be performed for a period of 12 months. Two measurements per week are scheduled for the first six months of the validation campaign, while one measurement per week is scheduled fo...

Solar Energy, 1982

In this paper we estimate, for the stations of Genova and Macerata, daily values of direct and di... more In this paper we estimate, for the stations of Genova and Macerata, daily values of direct and diffuse radiation starting from daily values of global radiation. We propose a fit to the experimental points and analyse their statistical distributions.

2011 3rd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2011

... the optical distortions occurring inside the scan head both spectral and spatial, ie the so c... more ... the optical distortions occurring inside the scan head both spectral and spatial, ie the so called spectral ???smile??? and ???keystone ... It incorporates photogrammetric bundle adjustment solutions to produce orthocorrected imagery utilizing precision IMU/GPS and terrain height data from ...

Journal of Geophysical Research: Atmospheres, 2001

The potential of NOAA-advanced very high resolution radiometer (AVHRR) time series for environmen... more The potential of NOAA-advanced very high resolution radiometer (AVHRR) time series for environmental studies was investigated at the pixel scale. We analyzed a multitemporal set of annual maximum value composite (MVC) of normalized difference vegetation index. Local area coverage data of middle and southern Italy were processed from measurements taken between 1985 and 1999 of the afternoon viewing of NOAA 9, 11, and 14. Significant artificial anomalies were found due to satellite switch, shortwave calibration instability and illumination effects. We removed such systematic errors and achieved a strong reduction of standard deviation values (around 50%). Interesting results were obtained from a change detection analysis performed at the pixel level. Outcomes from satellite-based analysis were compared with independent time series data, such as ancillary meteorological data, forest fire archives, and results from field surveys. Results showed that the geographical areas where MVC data indicated a decrease in vegetation activity match well with areas affected by forest fires, intense human activity, or rapid decline of coniferous forests. In contrast, an increase in MVC was found in regions recently involved in a growth of intensive farming or invaded by alien plants which are now recognized as a threat to native species. Our exploratory results indicate that high-quality AVHRR data can profitably support studies on interannual dynamics of surface parameters. In particular, our parameterization of illumination and calibration adjustments can be directly applied to Mediterranean-like ecosystems. 1. Introduction The large amount of information stored in NOAA advanced very high resolution radiometer (AVHRR) data might be very useful in environmental studies, out from the meteorology framework the NOAA satellite series was designed for. The spectral characteristics and availability of data for the last 20 years make AVHRR an attractive support for estimations of space/temporal dynamics of surface parameters, such as temperature and vegetation indexes. Unfortunately, AVHRR time series are strongly affected by systematic errors, due to calibration residuals of the shortwave channels [

Geophysical Research Letters, 2008

Atmospheric Chemistry and Physics, 2009

Indoor and outdoor water soluble trace elements (TEs) were analyzed on quasi-ultrafine (UF), accu... more Indoor and outdoor water soluble trace elements (TEs) were analyzed on quasi-ultrafine (UF), accumulation, and coarse PM filter samples collected at four retirement communities, three located in the San Gabriel Valley and one in Riverside, CA. Our analysis indicates that a complex mix of vehicular, industrial, and soil-related emissions was responsible for the elemental concentrations measured at the three San Gabriel sites, while regional transport, soil re-suspension and, to a lower degree, local traffic contributed to TE levels observed in Riverside. In the quasi-UF mode, the magnitude of indoor/outdoor concentration ratios (I/O) for elements of anthropogenic origin was highly variable, reflecting the spatial heterogeneity of combustion sources in the study area. Indoor/outdoor ratios in accumulation mode PM were closer to 1, and more homogeneous across sites, indicating that elements associated with this size fraction penetrate indoors with high efficiencies. The lowest overall I/O ratios were obtained for elements found in coarse particles, consistent with the fact that only a small portion of coarse outdoor PM infiltrates indoors. The potential of S and other TEs to serve as tracers of indoor-penetrated particles of outdoor origin was also examined. Our results suggest that using the I/O ratio of S (I/O S) as a surrogate of the infiltration factor for PM 2.5 [Finf(PM 2.5)] might lead to an overestimation of the indoor PM 2.5 originating outdoors. This is in contrast with what was reported in previous studies conducted in the Eastern US, where S has been consistently used as a reliable tracer of outdoor PM 2.5 infiltrating indoors. Our differences

International Journal of Remote Sensing, 2001

Advanced Very High Resolution Radiometer (AVHRR)-based fire detection methods are considered in t... more Advanced Very High Resolution Radiometer (AVHRR)-based fire detection methods are considered in this work in order to assess their effective usefulness in the framework of civil programmes for fire risk and damage mitigation. The discussion is divided into the evaluation of the ...

Revue de Physique Appliquée, 1986

ABSTRACT

53rd EAEG Meeting, 1991

In this paper we are concerned with the problem of picking out the useful signal from noisy volta... more In this paper we are concerned with the problem of picking out the useful signal from noisy voltage recordings in geoelectrical prospecting. The voltage time series, recorded at the measuring probes of the electrodic array is made up of the sum of a deterministic component, the response of medium to the energizing current, and a random noise component.

Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science, 2001

In this work we describe the main features of a new prototype of remote station able to jointly d... more In this work we describe the main features of a new prototype of remote station able to jointly detect electrical and seismometric parameters. The measuring station has been installed at Tito site on the Southern Apennine chain, one of the most seismic active areas of the Mediterranean region; it combines new technologies for the data acquisition with a robust statistical technique to discriminate anomalous fluctuations from background noise in the recorded signals. The completely automatic station is equipped with sensors able to detect self-potential signals (16 channels, A/D 24 bit, sampling rate of 0.25Hz) and a 1Hz three directional seismometer connected to an acquisition unit having a dynamics of 133 dB. After a preliminary filtering procedure, mainly devoted to remove all the influences due to meteo-climatic parameters and/or cultural electrical noise, a software developed ad hoc to study the possible correlation between anomalous patterns in electrical signals and local microseismic activity was employed. In particular, the instrumental features of the new station allow us to compare the fluctuations of electrical signa& detected at short temporal scales, with seismic events with low magnitude (M<3), that are not revealed by the national seismometric network (National Institute of Geophysics). The analysis of the first results obtained during the 1999 confirms us that the station could be largely used in a geophysical monitoring network operating in seismic active areas.

Lettere al Nuovo Cimento Series 2, 1984

ABSTRACT

Air pollution is one of the most pressing environmental problems which affects likewise urban, in... more Air pollution is one of the most pressing environmental problems which affects likewise urban, industrial and rural areas. Environmental planners, regulators and decision makers need reliable, scientifically based tools to find out strategies for controlling air pollution in a cost-effective way, taking into account the whole productive system. In this framework the basic elements of energyenvironmental planning have to be extended to include also waste processing technologies amongst the usually considered pollution sources. Bottom-up optimizing models, based on linear programming techniques and customized for specific cases, represent a powerful tool in energy-environmental management. This paper focuses on the integrated modeling of material flows and energy system performed on a local scale case study (Basilicata Region, Southern Italy) using the linear programming model IEA-MARKAL. We have evaluated the feasibility of the model in representing the waste management system to estimate the environmental impact of the waste processing technologies in the context of the whole productive system. A sensitivity analysis has been carried out to emphasize the connections between tariffs, waste disposal technologies assessment and atmospheric emissions.

Proceedings. 2004 International Conference on Information and Communication Technologies: From Theory to Applications, 2004., 2004

In this work, we present an implementation of an open federated framework allowing discovery and ... more In this work, we present an implementation of an open federated framework allowing discovery and interoperability of disparate geographic information resources-i.e. Imagery, Gridded and Coverage Data stemming from Earth Observation. The framework is an example of a Service-Oriented Architecture (SOA), participated by heterogeneous computational resources according to the publish-find-bind paradigm. Such framework has been developed and experimented in the context of the COS(OT) project: part of the Italian National Operating Program (PON) on Scientific and Technological Research and High Education. The framework service architecture, as well as its information, computation and technology views are described. The presented technology framework implements some concepts of a Spatial Data Infrastructure for Environmental Sciences datasets.

Il Nuovo Cimento C, 1981

... Brindisi 40.65 Pantelleria 36.82 Capo Mele 43.95 Pescara 42.43 Capo Palinuro 40.02 Pian Ros&#... more ... Brindisi 40.65 Pantelleria 36.82 Capo Mele 43.95 Pescara 42.43 Capo Palinuro 40.02 Pian Ros'~ 42.43 Crotone 39.07 Pianosa 42.58 Gela 37.08 Pisa 43.67 ... Capo ~ele 0.22 Pescara 0.32 CapoPalinuro 0.20 Plan Ros~ 0.23 Crotone 0.24 Pianosa 0.16 G ela 0.17 Pisa 0.31 ...

Daily global solar-radiation sequences are studied for Italy. We show that the experimental data ... more Daily global solar-radiation sequences are studied for Italy. We show that the experimental data can be described as a first-order autoregressive stochastic process independent of locality or season: the only climatic information needed is the monthly average of the clearness index. We also show that tile clearness index sequences can be transformed in sequences with normal distribution but with the same autocorrelation properties; it is then easy to construct synthetic sequences of radiation data with the same statistical properties as the real data, useful for performance prediction of solar systems.

High Spectral Resolution Infrared Remote Sensing for Earth’s Weather and Climate Studies, 1993

Spectra recorded by Michelson interferometer spectrometers are usually distorted because the spec... more Spectra recorded by Michelson interferometer spectrometers are usually distorted because the spectrometers have a finite resolving power. Indeed, although the radiance spectrum is obtained in principle by a Fourier transform of the interferogram, various factors intervene to make the recovered spectrum an imperfect representation of the true spectrum. The most important ones are: a)- aperture effects; b)- tilt and aberrations; c)- phase and compensation; d)- truncation; e)- noise.

Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, 1999

The main objective of this work has been to evaluate the potential of integration of satellite da... more The main objective of this work has been to evaluate the potential of integration of satellite data and topographic factor, in order to achieve improved performance in forest fire danger estimation. Existing AVHRR-based fire danger estimation methods (a review is specifically made) aim at obtaining fire susceptibility classification exploiting, mainly, the temporal evolution of NDVI, and Surface Temperature (Ta). In this work fire danger estimation has been performed integrating satellite data with fuel type and topographic factors. In order to evaluate the reliability of the estimated indices, the timespace distribution of actual forest fires, provided by the Italian Forestry service, has been used. Preliminary results are very promising; they have shown that in the summer of 1 996, a large number of forest fires occurred in the estimated higher danger areas.

Lidar and Atmospheric Sensing, 1995

The lidar in-space technology experiment (LITE) has been developed at the NASA Langley Research C... more The lidar in-space technology experiment (LITE) has been developed at the NASA Langley Research Center to fly on the Space Shuttle and demonstrate the utility of lidar systems in space. An extensive correlative measurements campaign to validate LITE measurements with coincident measurements made with reliable ground-based and balloon-borne sensors was carried out both in Napoli and Potenza in the period September 10-19, 1994. The lidar in Napoli is based on a Xe:F excimer laser (351 nm), while the lidar in Potenza is based on a Nd:YAG laser operating both on the 2nd (532 nm) and 3rd (355 nm) harmonic. During this intense campaign we performed both elastic and Raman measurements for molecular nitrogen. Solar irradiance spectra at ground level were measured by an Optical Spectra Analyzer in the spectral region 0.4-1.1 micrometers , obtaining both columnar water vapor and aerosol load. Aerosol backscattering data will be presented. Elastic and nitrogen Raman signals are used for measuring atmospheric transmissivity. Finally the density and temperature profiles obtained from the simultaneous measurement of the elastic and the N2 Raman signal will be presented. Simultaneous radiosonde measurements of temperature, pressure, and relative humidity will be used to compare lidar data.

Lidar techniques are widely used to measure atmospheric aerosols and water vapour concentration a... more Lidar techniques are widely used to measure atmospheric aerosols and water vapour concentration and therefore they can be efficiently employed to validate ENVISAT products. An intensive aerosol and water vapour lidar measurement campaign, started on July 2002, is in progress at IMAA-CNR in Tito Scalo (PZ) (Southern Italy, 40^o36'N, 15^o44'E, 820 m above sea level) in the frame of the validation program of ENVISAT. A Raman lidar system is used to perform both aerosol and water vapour measurements; aerosol backscatter and extinction coefficients are retrieved from simultaneous elastic signals at 355 nm and inelastic N_2 Raman backscatter lidar signals at 386.6 nm, whereas, water vapour mixing ratio measurements are retrieved from simultaneous H_2O and N_2 Raman signals. Systematic measurements will be performed for a period of 12 months. Two measurements per week are scheduled for the first six months of the validation campaign, while one measurement per week is scheduled fo...

Solar Energy, 1982

In this paper we estimate, for the stations of Genova and Macerata, daily values of direct and di... more In this paper we estimate, for the stations of Genova and Macerata, daily values of direct and diffuse radiation starting from daily values of global radiation. We propose a fit to the experimental points and analyse their statistical distributions.