Results 71 to 80 of about 2,423,184 (252)

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

Airborne 2-Micron Double Pulsed Direct Detection IPDA Lidar for Atmospheric CO2 Measurement

EPJ Web of Conferences, 2016
An airborne 2-micron double-pulsed Integrated Path Differential Absorption (IPDA) lidar has been developed for atmospheric CO2 measurements. This new instrument has been flown in spring of 2014 for a total of ten flights with 27 flight hours.
Yu Jirong, Petros Mulugeta, Refaat Tamer, Reithmaier Karl, Remus Ruben, Singh Upendra, Johnson Will, Boyer Charlie, Fay James, Johnston Susan, Murchison Luke   +10 more
doaj   +1 more source

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

, 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, Kiemle, Christoph, Flamant, Pierre, Fabien, Gibert, Fix, Andreas, Ciais, Philippe, Quatrevalet, Mathieu, Amediek, Axel, Ehret, Gerhard, Wirth, Martin   +9 more
core  

Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response

Laser &Photonics Reviews, EarlyView.
A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng, Yu Zhang, Xiangfeng Chen, Wim Bogaerts   +3 more
wiley   +1 more source

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

, 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, Kiemle, Christoph, Fix, Andreas, Dörnbrack, Andreas, Ehret, Gerhard   +4 more
core  

From Planar to 3D Nanophotonic Lenses: Advancing Design, Fabrication, and Applications

Laser &Photonics Reviews, EarlyView.
Three‐dimensional nanophotonic lenses are enabled by an integrated workflow that links design parameterization, full‐wave electromagnetic simulation, computational optimization, and freeform fabrication. This Review summarizes how these tools expand optical design freedom beyond a single patterned plane by enriching the local meta‐atom response and ...
Wei Zhu, Lyudmila V. Goncharova, Eric Johlin   +2 more
wiley   +1 more source

Latent Heat Fluxes over Complex Terrain Measured by Airborne Water Vapour and Wind Lidars [PDF]

, 2010
The combination of a water vapour and a wind lidar on an aircraft is an interesting new tool that allows to measure latent heat flux profiles and to portray the small- to mesoscale variability beneath the aircraft trajectory with high accuracy and ...
Kiemle, Christoph
core  

A Scalable Platform for Massively Parallel Superconducting Single‐Photon Detection

Laser &Photonics Reviews, EarlyView.
One hundred independent superconducting nanowire detectors, each with efficiency up to 80.1–98.3%, are integrated into a single compact system operating below 2.1 K. This parallel architecture supports fully connected multi‐user quantum entanglement distribution, while its scalability opens new avenues in optical quantum computing, QKD networks ...
You Xiao, Zhen Wan, Dianpeng Wang, Jianjian Zhu, Huiqin Yu, Shuna Wang, Zhiyun Shu, Chaomeng Ding, Hongxin Xu, Jia Huang, Jiamin Xiong, Xiaoyu Liu, Lingyun Li, Lixing You, Hao Li   +14 more
wiley   +1 more source

Research on Synchronous Inversion Algorithm Based on Tri-Wavelength DIAL

Optics
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, Hangbo Hua, Jing Yu, Zhitian Niu, Ming Kong   +4 more
doaj   +1 more source

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

EPJ 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., Dolgii S.I., Burlakov V. D., Nevzorov A.A., Nevzorov A. V.   +4 more
doaj   +1 more source