Results 21 to 30 of about 917 (218)

Imaging of Atmospheric Dispersion Processes with Differential Absorption Lidar [PDF]

SIAM Journal on Imaging Sciences
We consider the inverse problem of fitting atmospheric dispersion parameters based on time-resolved back-scattered differential absorption Lidar (DIAL) measurements. The obvious advantage of light-based remote sensing modalities is their extended spatial range which makes them less sensitive to strictly local perturbations/modelling errors or the ...
Robert Lung, Nick Polydorides
openaire   +3 more sources

Advances in Diode-Laser-Based Water Vapor Differential Absorption Lidar

EPJ Web of Conferences, 2016
An advanced diode-laser-based water vapor differential absorption lidar (WV-DIAL) has been developed. The next generation design was built on the success of previous diode-laser-based prototypes and enables accurate measurement of water vapor closer to ...
Spuler Scott, Repasky Kevin, Morley Bruce, Moen Drew, Weckwerth Tammy, Hayman Matt, Nehrir Amin   +6 more
doaj   +1 more source

Differential Absorption Lidar (DIAL) Measurements of Landfill Methane Emissions

Remote Sensing, 2017
Methane is one of the most important gaseous hydrocarbon species for both industrial and environmental reasons. Understanding and quantifying methane emissions to atmosphere is therefore an important element of climate change research.
Fabrizio Innocenti, Rod Robinson, Tom Gardiner, Andrew Finlayson, Andy Connor   +4 more
doaj   +1 more source

First Steps of Maturation Towards Space of Nested Cavity Optical Parametric Oscillator and Amplifiers for DIAL Based on Periodically Poled Nonlinear Materials [PDF]

EPJ Web of Conferences, 2020
We report on the first steps of maturation towards space of a nested cavity optical parametric oscillator and amplifiers, based on periodically poled nonlinear materials, emitting in the 2µm range for multi species differential absorption lidar (DIAL).
Dherbecourt Jean-Baptiste, Melkonian Jean-Michel, Lebat Vincent, Tanguy Nicolas, Duzellier Sophie, Blanchard Cedric, Coetzee Rian S., Canalias Carlota, Pasiskevicius Valdas, Godard Antoine, Raybaut Myriam   +10 more
doaj   +1 more source

Mixed layer height retrievals using MicroPulse Differential Absorption Lidar [PDF]

Atmospheric Measurement Techniques
Accurate measurement of the mixed layer height (MLH) is a key observational capability necessary for many studies in weather forecasting, air quality assessment, and surface-atmosphere exchange.
L. Colberg, K. S. Repasky, M. Hayman, R. A. Stillwell, S. M. Spuler   +4 more
doaj   +1 more source

Accuracy Evaluation of Differential Absorption Lidar for Ozone Detection and Intercomparisons with Other Instruments

Remote Sensing
Differential absorption lidar is an advanced tool for investigating tropospheric ozone transport and development. High-quality differential absorption lidar data are the basis for studying the temporal and spatial evolution of ozone pollution.
Guangqiang Fan, Bowen Zhang, Tianshu Zhang, Yibin Fu, Chenglei Pei, Shengrong Lou, Xiaobing Li, Zhenyi Chen, Wenqing Liu   +8 more
doaj   +1 more source

Field tests of the mobile lidar for tropospheric ozone sensing on horizontal (inclined) and vertical paths [PDF]

E3S Web of Conferences
The results of field tests of the mobile lidar for ozone sensing on horizontal (inclined) and vertical paths are presented. The lidar operates on the basis of the differential absorption and scattering method at wavelengths of 299/341 nm and allows ...
Nevzorov Alexey, Tuzhilkin Dmitry, Nevzorov Aleksey   +2 more
doaj   +1 more source

Remote measurement of atmospheric mercury using differential absorption lidar [PDF]

Optics Letters, 1982
Atomic mercury in the atmosphere was detected by the differential-absorption lidar technique. Laser light at the mercury resonance wavelength of 253.65 nm was generated by anti-Stokes shifting in H(2) of the frequency-doubled output from a Nd:YAG-pumped dye laser.
Aldén, Marcus, Edner, H, Svanberg, Sune
openaire   +3 more sources

Estimation of background gas concentration from differential absorption lidar measurements [PDF]

Atmospheric Measurement Techniques, 2016
Approaches are considered to estimate the background concentration level of a target species in the atmosphere from an analysis of the measured data provided by the National Physical Laboratory's differential absorption lidar (DIAL) system.
P. Harris, N. Smith, V. Livina, T. Gardiner, R. Robinson, F. Innocenti   +5 more
doaj   +1 more source

Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors

Advanced Science, EarlyView.
A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong, Sang‐Jun Kim, Jisu Jang, Je‐Jun Lee, Seong‐Jun Han, Eungseon Yeon, Jung Woo Kim, Jongtae Ahn, Sang Yeon Kim, Hyun Woo Ko, Sunghyun Han, Seung Ah Lee, Paul Hongsuck Seo, Young‐Woo Suh, Kimoon Lee, Gunuk Wang, Dong‐Guang Zheng, Sunghee Hong, Sangin Hahn, Seon Kyu Yoon, Min‐Chul Park, Do Kyung Hwang   +21 more
wiley   +1 more source