Results 21 to 30 of about 3,413 (211)

A novel lidar gradient cluster analysis method of nocturnal boundary layer detection during air pollution episodes [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
The observation of the nocturnal boundary layer height (NBLH) plays an important role in air pollution and monitoring. Through 39 d of heavy pollution observation experiments in Beijing (China), as well as an exhaustive evaluation of the gradient,
Y. Zhang   +4 more
doaj   +1 more source

First validation of GOME-2/MetOp absorbing aerosol height using EARLINET lidar observations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
The aim of this study is to investigate the potential of the Global Ozone Monitoring Experiment-2 (GOME-2) instruments, aboard the Meteorological Operational (MetOp)-A, MetOp-B and MetOp-C satellite programme platforms, to deliver accurate geometrical ...
K. Michailidis   +9 more
doaj   +1 more source

Multi-Leakage Source Localization of Safety Valve Based on Uniform Circular AE Array and Improved MUSIC Algorithm

open access: yesSensors, 2023
The safety valve is the core component of the pressure-relief protection device for pressure-bearing special equipment. When the safety valve leaks, the medium of the pressure vessel will be lost and wasted, which may cause safety accidents. With the aim
Jianjun Hou, Shuxun Li, Lingxia Yang
doaj   +1 more source

Cloud top heights and aerosol layer properties from EarthCARE lidar observations: the A-CTH and A-ALD products [PDF]

open access: yesAtmospheric Measurement Techniques, 2023
The high-spectral-resolution Atmospheric Lidar (ATLID) on the Earth Cloud, Aerosol and Radiation Explorer (EarthCARE) provides vertically resolved information on aerosols and clouds with unprecedented accuracy.
U. Wandinger   +4 more
doaj   +1 more source

Atmospheric Boundary Layer Height Evolution with Lidar in Buenos Aires from 2008 to 2011

open access: yesEPJ Web of Conferences, 2016
The analysis of the atmospheric boundary layer top height evolution is obtained from 2008 to 2011 in Buenos Aires using the multiwavelength lidar located at CEILAP (CITEDEF-CONICET) (34°33’ S; 58°30’ W; 17 m asl).
Pawelko Ezequiel Eduardo   +5 more
doaj   +1 more source

Random Sample Fitting Method to Determine the Planetary Boundary Layer Height Using Satellite-Based Lidar Backscatter Profiles

open access: yesRemote Sensing, 2020
The planetary boundary layer height (PBLH) is the atmospheric region closest to the earth’s surface and has important implications on weather forecasting, air quality, and climate research.
Lin Du, Ya’ni Pan, Wei Wang
doaj   +1 more source

Estimation of Suspended Sediment Load Using Integrated Intelligent Methods with Considering Model Uncertainty [PDF]

open access: yesمجله آب و خاک, 2021
Introduction: Sediment transportation and accurate estimation of its rate is a significant issue for river engineers and researchers. So far, various and complex relationships have been proposed to predict the amount of suspended sediment transport rate,
S.M. Saghebian
doaj   +1 more source

Application of Convective Condensation Level Limiter in Convective Boundary Layer Height Retrieval Based on Lidar Data

open access: yesAtmosphere, 2017
Micro pulse lidar is a promising tool for retrieving the convective boundary layer height (CBLH), but its application has been hindered by sharp extinction of the signal in high humidity conditions, e.g., clouds. To remedy this, we developed an effective
Hong Li   +5 more
doaj   +1 more source

Image classification of human carcinoma cells using complex wavelet-based covariance descriptors. [PDF]

open access: yesPLoS ONE, 2013
Cancer cell lines are widely used for research purposes in laboratories all over the world. Computer-assisted classification of cancer cells can alleviate the burden of manual labeling and help cancer research.
Furkan Keskin   +5 more
doaj   +1 more source

Airborne flux measurements of ammonia over the southern Great Plains using chemical ionization mass spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2023
Ammonia (NH3) is an abundant trace gas in the atmosphere and an important player in atmospheric chemistry, aerosol formation and the atmosphere–surface exchange of nitrogen. The accurate determination of NH3 emission rates remains a challenge, partly due
S. Schobesberger   +14 more
doaj   +1 more source

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