Results 51 to 60 of about 2,558,610 (193)

Feasibility Study for an Airborne N2O Lidar [PDF]

open access: yesEPJ Web of Conferences
Nitrous oxide, N2O is the third most important anthropogenic greenhouse gas after carbon dioxide and methane. The major source is nitrogen fertilization in croplands.
Kiemle Christoph   +3 more
doaj   +1 more source

Field-deployable diode-laser-based differential absorption lidar (DIAL) for profiling water vapor [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A field-deployable water vapor profiling instrument that builds on the foundation of the preceding generations of diode-laser-based differential absorption lidar (DIAL) laboratory prototypes was constructed and tested. Significant advances are discussed,
S. M. Spuler   +5 more
doaj   +1 more source

Comparison of Airborne Water Vapor Lidar Observations with ECMWF Analyses and first Assimilation Experiments [PDF]

open access: yes, 2006
Water vapor is the most important greenhouse gas and controls cloud formation and the evolution of weather systems. As its tropospheric concentration may rapidly vary over four orders of magnitude, accurate monitoring of water vapor, especially in the ...
Flentje, Harald   +6 more
core  

Spatial variation in liana effects on host‐tree allometry and biomass in an intact tropical forest

open access: yesEcography, EarlyView.
Lianas are increasing in abundance across the tropics, yet local spatial variation in their effects on host‐tree allometry and biomass, and the drivers of this variation within forests, remain poorly understood. Using field inventory, drone photogrammetry, and terrestrial laser scanning (TLS) across a 50‐ha plot on Barro Colorado Island, Panama, we ...
Sruthi M. Krishna Moorthy   +9 more
wiley   +1 more source

Laser remote sensing of the planetary boundary layer

open access: yesMeteorologische Zeitschrift, 2002
Laser remote sensing techniques are new tools for experimental studies of the planetary boundary layer. Backscatter lidar can make use of differences in the aerosol distribution to characterize the layer structure and to reveal properties of the ...
Jens Bösenberg, Holger Linné
doaj   +1 more source

Towards more accurate water vapour observations: Airborne lidar measurement examples and characteristics [PDF]

open access: yes, 2006
Airborne differential absorption lidar measurements of mid-latitude, subtropical and tropical water vapour were performed during several recent campaigns over North and South America, and Australia, as well as on the corresponding long-range transfer ...
Flentje, Harald   +4 more
core  

Interface Engineering in Piezoelectric‐on‐Insulator Platforms: Coupling of Electrons, Photons, and Phonons for Multifunctional Integration

open access: yesElectron, EarlyView.
The underlying interface physics and engineering strategies across key POI material systems, including LiNbO3/Si, LiNbO3/SiC, LiNbO3/diamond, and AlN/diamond, were reviewed. The key engineering strategies such as atomic‐scale bonding optimization, nanostructuring, ultrathin phonon‐bridge interlayers, and ferroelectric domain wall engineering for ...
Yunjia Bao   +6 more
wiley   +1 more source

Overcoming spectral limits of perovskite photodetectors for the infrared region

open access: yesInfoScience, EarlyView.
Infrared (IR) photodetectors are vital for modern optoelectronics, but traditional inorganic semiconductors face limitations in cost, processing, and bandgap tunability. This review provides a summary of advanced strategies to extend metal halide perovskites into the IR region, categorizing approaches into intrinsic material engineering, physical ...
Jiean Li   +4 more
wiley   +1 more source

The French-German Climate Monitoring Initiative on global observations of atmospheric CH4 [PDF]

open access: yes, 2010
Knowledge of concentrations and fluxes of the most important long-lived greenhouse carbon dioxide (CO2) and methane (CH4) is a key element of climate change research.
Gibert, Fabien   +9 more
core  

Preliminary range-resolved detection of stable water isotopologues by differential absorption lidar using a 2 µm parametric source

open access: yes, 2022
International audienceWe present a differential absorption lidar based on a single-frequency parametric source operating at 2 μm which was used for range-resolved measurements of the stable water isotopologues H$_2$ $^{16}$O and HD $^{16 ...
Totems, Julien   +27 more
core   +1 more source

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