Results 51 to 60 of about 877 (209)

Research on Synchronous Inversion Algorithm Based on Tri-Wavelength DIAL

open access: yesOptics
Traditionally, retrieving both temperature and CO2 concentration in atmospheric remote sensing has relied on two independent lidar systems, leading to increased system complexity and limited coordination.
Zhixiao Xu   +4 more
doaj   +1 more source

Lidar Measurements of Ozone in the Upper Troposphere – Lower Stratosphere at Siberian Lidar Station in Tomsk

open access: yesEPJ Web of Conferences, 2016
The paper presents the results of DIAL measurements of the vertical ozone distribution at the Siberian lidar station. Sensing is performed according to the method of differential absorption and scattering at wavelength pair of 299/341 nm, which are ...
Romanovskii O. A.   +4 more
doaj   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl   +8 more
wiley   +1 more source

Remote sensing of methane emissions by combining optical similitude absorption spectroscopy (OSAS) and lidar

open access: yesEPJ Web of Conferences, 2018
Monitoring the emission of gases is difficult to achieve in industrial sites and in environments presenting poor infrastructures. Hence, robust methodologies should be developed and coupled to Lidar technology to allow remote sensing of gas emission ...
Galtier Sandrine   +6 more
doaj   +1 more source

δ 13C carbon isotopic composition of CO2 in the atmosphere by Lidar [PDF]

open access: yesEPJ Web of Conferences
A differential absorption lidar (DIAL) has been developed at LMD to measure the variation of stable isotopic composition of CO2, δ 13C, in the atmosphere.
Gibert Fabien   +2 more
doaj   +1 more source

Hyperspectral species maps and LiDAR‐based structured population models show future forest fire frequency may compromise forest resilience

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Monitoring forest recovery from disturbances at scale requires tracking tree dynamics, yet traditional ground‐based approaches are resource‐intensive. We present a pipeline to parameterize integral projection models (IPMs) using LiDAR data and hyperspectral‐based species maps to assess post‐fire recovery across large, forested areas at the Caribou ...
Jessica McLean   +4 more
wiley   +1 more source

Development of wavelength locking circuit for 1.53 micron water vapor monitoring coherent differential absorption LIDAR

open access: yesEPJ Web of Conferences, 2018
We have studied a ground based coherent differential absorption LIDAR (DIAL) for vertical profiling of water vapor density using a 1.5μm laser wavelength. A coherent LIDAR has an advantage in daytime measurement compared with incoherent LIDAR because the
Imaki Masaharu   +2 more
doaj   +1 more source

Scheimpflug-like processing of differential absorption lidar data on water vapor [PDF]

open access: yesEPJ Web of Conferences
Differential Absorption Lidar (DiAL) method is widely used for a number of ground-based and airborne greenhouse gas measurement applications. However, for a direct detection in the 2µm range, other sources of random noise can be neglected in front of the
Esnouf Tancrède   +5 more
doaj   +1 more source

Measuring Water Vapor with Differential Absorption Lidar

open access: yes, 2012
Despite the need for global measurements of water vapor profiles with low bias and high vertical resolution there is currently no operational remote sensing system that would deliver such data. A possible solution to this problem is offered by the differential absorption lidar (DIAL) approach. The basic principle of operation will be described and some
openaire   +2 more sources

Intercomparison of CL31 and CL51 ceilometers and impact of installation angle on cloud base height measurement agreement

open access: yesWeather, EarlyView.
Lowest‐layer cloud base height (CBH) measurements obtained between July 2018 and December 2019 from four ceilometers at the Korea Standard Meteorological Observatory were compared to determine how ceilometer installation angle differentially affects CBH measurements.
Jaewon Kim   +3 more
wiley   +1 more source

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