Results 31 to 40 of about 897 (203)
Development of water vapor DIAL and comparison with Raman lidar [PDF]
EPJ Web of ConferencesVertical profile measurements of water vapor are important for improving early prediction accuracy of heavy rainfall. Developing a low-maintenance lidar is expected to establish an extensive lidar observation network to reduce water-related hazards such ...
Uchiho Yuichi +3 more
doaj +1 more source
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 +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 +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 +10 more
doaj +1 more source
Mixed layer height retrievals using MicroPulse Differential Absorption Lidar [PDF]
Atmospheric Measurement TechniquesAccurate 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 +4 more
doaj +1 more source
Remote SensingDifferential 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 +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 ConferencesThe 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 +2 more
doaj +1 more source
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 +5 more
doaj +1 more source
Biological Diversity, EarlyView.We compared Landsat‐8 OLI, SPOT, and hyperspectral data for estimating vascular plant diversity in China's Hunshandak Sandland. SPOT data showed the strongest correlation with alpha diversity, followed by hyperspectral data, with Landsat‐8 performing the weakest.
Ying Ye +3 more
wiley +1 more source
Perceived importance and didactic difficulty of chemistry education: Insights from Czech teachers
The Curriculum Journal, EarlyView.Abstract This empirical study examines how chemistry teachers in lower and upper secondary schools in the Czech Republic evaluate the content of the chemistry curriculum, focussing on its perceived importance and didactic difficulty. Based on a quantitative survey (N = 146), the study provides insight into the pedagogical content knowledge of ...
Jitka Lorenzová +6 more
wiley +1 more source