Results 61 to 70 of about 2,030,862 (242)

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

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

, 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, Kiemle, Christoph, Fix, Andreas, Dörnbrack, Andreas, Holm, Elias, Ehret, Gerhard, Weissmann, Martin   +6 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

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  

Model-based inference for biomass estimation in a LiDAR sample survey in Hedmark County, Norway [PDF]

, 2011
In forest inventories, regression models are often applied to predict quantities such as biomass at the level of sampling units. In this paper, we propose a model-based inference framework for combining sampling and model errors in the variance ...
Erik Næsset, Ross Nelson, Holm, Sören, Göran Ståhl, Sören Holm, Timothy G. Gregoire, Ståhl, Göran, Gregoire, Timothy G., Gobakken, Terje, Terje Gobakken, Næsset, Erik, Nelson, Ross, Sveriges lantbruksuniversitet., Holm, Sören,, Ståhl, Göran,   +14 more
core   +1 more source

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

Laser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan, Yanlei Liu, Kun Yu, Han Dai, Tianxu Jia, Zhiying Chen, Junsuk Rho, Yufang Liu   +7 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