A5000258460- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Spectroscopy and Laser Applications
- Indoor Air Quality and Microbial Exposure
- Atmospheric Ozone and Climate
- Meteorological Phenomena and Simulations
- Remote Sensing in Agriculture
- Oceanographic and Atmospheric Processes
- Optical Systems and Laser Technology
- Advanced Measurement and Detection Methods
- Water Quality Monitoring and Analysis
- Infrared Target Detection Methodologies
- Environmental and Agricultural Sciences
- Advanced Fluorescence Microscopy Techniques
- Horticultural and Viticultural Research
- Allergic Rhinitis and Sensitization
- Aeolian processes and effects
- Advanced Optical Sensing Technologies
- Photorefractive and Nonlinear Optics
- Atomic and Subatomic Physics Research
- Odor and Emission Control Technologies
- Gas Dynamics and Kinetic Theory
- Photonic and Optical Devices
Xi'an University of Technology
2014-2019
University of Nova Gorica
2010-2018
Abstract. A measuring campaign was performed over the neighboring towns of Nova Gorica in Slovenia and Gorizia Italy on 24 25 May 2010, to investigate concentration distribution urban aerosols. Tracking two-dimensional spatial temporal aerosol distributions using scanning elastic LIDAR, operating at 1064 nm. In addition, PM10 concentrations particles, NOx meteorological data were continuously monitored within LIDAR region. Based we collected, investigated flow dynamics lower troposphere...
The vibration-rotational Raman lidar system built in Xi'an, China (34.233°N, 108.911°E) was used to simultaneously detect atmospheric temperature, water vapor, and aerosols under different weather conditions. Temperature measurement examples showed good agreement with radiosonde data terms of the lapse rates heights inversion layer lower stratosphere. statistical temperature error due signal-to-noise ratio is less than 1 K up a height 15 km, estimated be 3 below 22 km. High-quality were...
A laser-induced fluorescence lidar has been developed for detecting the concentration of fluorescent aerosols in air. The was constructed with a pulsed fourth-harmonic Nd:YAG laser at ultraviolet wavelength 266 nm repetition rate 10 Hz. 250 mm diameter custom telescope used to collect optical spectra ranging from 260 560 nm. Fluorescence signals wavelengths 310-440 were extracted, exploring filter bandwidth 130 preliminary experiments conducted campus Xi'an University Technology, which...
We report on the development of a scanning mobile Mie-fluorescence lidar for detection and identification biological non-biological aerosols in lower troposphere. Our system has capability to perform azimuth elevation angle scans with an angular resolution 0.1° both day-time night-time conditions. As transmitter, we use solid state Nd:YAG laser simultaneous emission 8 ns light pulses at 1064 nm 266 maximum repetition rate 10 Hz. Scattered is collected by Newtonian telescope diameter 300 mm....
Abstract. The eruption of the Eyjafjallajökull volcano starting on 14 April 2010 resulted in spreading volcanic ash over most parts Europe. In Slovenia, presence was monitored using ground-based in-situ measurements, lidar-based remote sensing and airborne measurements. Volcanic origin detected aerosols confirmed by subsequent spectral chemical analysis collected samples. initial arrival to Slovenia first through precipitation, which occurred 17 at 01:00 UTC satellite-based sensing. At this...
Accurate aerosol optical properties could be obtained via the high spectral resolution lidar (HSRL) technique, which employs a narrow filter to suppress Rayleigh or Mie scattering in return signals. The ability of is critical for HSRL. Meanwhile, it impossible increase rejection without limitation. How optimize discriminator and select appropriate suppression rate signal important us. HSRL technology was thoroughly studied based on error propagation. Error analyses sensitivity studies were...
In order to perform hyperspectral remote sensing, we present a continuous tunable cavity Fabry-Perot interferometer (FPI) by using potassium dideuterium phosphate (DKDP) with two ring electrodes. DKDP has the good performances of high transmittance in ultraviolet band and large aperture 20 mm (the maximum can be 100 mm). Since resonant frequency an FPI continuously varied refractive index change caused electro-optic effect, influence moving parts on eliminated. Digital holographic...
Abstract Real-time monitoring of atmospheric bioaerosol concentrations primarily involves analyzing the total fluorescence signal, which does not provide specific content each component. Since mixed spectra contain information about composition and bioaerosols, by employing multivariate analysis using regression algorithms, it is possible to extract components from predict proportion In this study, upon extracted in vertex component analysis, we compared several quantatitive models for their...
Poisson distributions have the characteristic of equality between their variance and mean values. By constructing a calculation model temporal spatial variance, relationship values lidar analog data photon-counting can be analyzed. The results show that from far field distribution property variances corresponding values, while for whole probing traces do not. In this paper, by analyzing properties data, dead time was estimated, threshold voltage system linear working range photomultiplier...
Abstract. The eruption of the Eyjafjallajökull volcano starting on 14 April 2010 resulted in spreading volcanic ash over most parts Europe. In Slovenia, presence was monitored using ground-based in-situ measurements, lidar-based remote sensing and airborne measurements. Volcanic origin detected aerosols confirmed by subsequent spectral chemical analysis collected samples. initial arrival to Slovenia at ground level measurements during night 17 2010, but not observed via due clouds lower...
Abstract. A measuring campaign was performed over the neighboring towns of Nova Gorica in Slovenia and Gorizia Italy on 24 25 May 2010, to investigate concentration distribution urban aerosols. Tracking two-dimensional spatial temporal aerosol distributions using scanning elastic lidar operating at 1064 nm. In addition, PM10 concentrations particles, NOx meteorological data were continuously monitored within region. Based collected data, we investigated flow dynamics lower troposphere an...
In order to investigate biological aerosols in the air, a fluorescence lidar has being developed at Laser Radar Center of Remote Sensing Atmosphere, Xi'an University Technology. The is constructed with pulsed Nd:YAG laser, employing based harmonic (1064 nm), second (532 nm) and fourth (266 simultaneously, repetition rate 10 Hz. A 250 mm diameter custom telescope used collect optical spectra ranging from 260-1100 nm. Infrared detection, an avalanche diode (APD) used, two photomultiplier tubes...
In order to investigate the biological aerosols in atmosphere, we have designed an ultraviolet laser induced fluorescence lidar based on measuring principle. The employs a Nd:YAG of 266 nm as excited transmitter, and examines intensity received light at 400 for aerosol concentration measurements. this work, firstly describe configuration simulation estimate measure range system resolution under certain background radiation. With relative error less than 10%, numerical simulations show is...