Results 21 to 30 of about 43,716 (250)

Remote sensing of cloud droplet radius profiles using solar reflectance from cloud sides – Part 1: Retrieval development and characterization [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Convective clouds play an essential role for Earth's climate as well as for regional weather events since they have a large influence on the radiation budget and the water cycle.
F. Ewald   +4 more
doaj   +1 more source

Optical thickness and effective radius of Arctic boundary-layer clouds retrieved from airborne nadir and imaging spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
Arctic boundary-layer clouds in the vicinity of Svalbard (78° N, 15° E) were observed with airborne remote sensing and in situ methods. The cloud optical thickness and the droplet effective radius are retrieved from spectral radiance data from the nadir ...
E. Bierwirth   +8 more
doaj   +1 more source

Using Fay–Herriot Models and Variable Radius Plot Data to Develop a Stand-Level Inventory and Update a Prior Inventory in the Western Cascades, OR, United States

open access: yesFrontiers in Forests and Global Change, 2021
Stands are the primary unit for tactical and operational forest planning. Forest managers can use remote-sensing-based forest inventories to precisely estimate attributes of interest at the stand scale. However, remote-sensing-based inventories typically
Hailemariam Temesgen   +7 more
doaj   +1 more source

Remote sensing the vertical profile of cloud droplet effective radius, thermodynamic phase, and temperature [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Abstract. Cloud-aerosol interaction is a key issue in the climate system, affecting the water cycle, the weather, and the total energy balance including the spatial and temporal distribution of latent heat release. Information on the vertical distribution of cloud droplet microphysics and thermodynamic phase as a function of temperature or height, can ...
J. V. Martins   +9 more
openaire   +5 more sources

Redundancy Model and Boundary Effects Based Coverage-Enhancing Algorithm for 3D Underwater Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
In the study of three-dimensional underwater sensor networks, the nodes would produce changes in perception range under the influence of environmental factors and their own hardware. Requesting all nodes completely isomorphic is unrealistic.
Junjie Huang   +5 more
doaj   +1 more source

Effective radius of cloud droplets by ground‐based remote sensing: Relationship to aerosol [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2003
Enhancement of cloud droplet number concentration by anthropogenic aerosols has previously been demonstrated by in‐situ measurements, but there remains large uncertainty in the resultant enhancement of cloud optical depth and reflectivity. Detection of this effect is made difficult by the large inherent variability in cloud liquid water path (LWP); the
Byung‐Gon Kim   +3 more
openaire   +1 more source

Simulation of Optical Microfiber Loop Resonators for Ambient Refractive Index Sensing

open access: yesSensors, 2007
Based on theoretical modeling and optimization, we exploit the application ofoptical microfiber loop resonators in ambient refractive index sensing.
Xianfeng Chen   +3 more
doaj   +1 more source

Extraction of Liana Stems Using Geometric Features from Terrestrial Laser Scanning Point Clouds

open access: yesRemote Sensing, 2022
Lianas are self-supporting systems that are increasing their dominance in tropical forests due to climate change. As lianas increase tree mortality and reduce tree growth, one key challenge in ecological remote sensing is the separation of a liana and ...
Tao Han   +1 more
doaj   +1 more source

Computational Method for Wavefront Sensing Based on Transport-of-Intensity Equation

open access: yesPhotonics, 2021
Recently the transport-of-intensity equation as a phase imaging method turned out as an effective microscopy method that does not require the use of high-resolution optical systems and a priori information about the object.
Iliya Gritsenko   +4 more
doaj   +1 more source

Barrier Coverage Mechanism Using Adaptive Sensing Range for Renewable WSNs

open access: yesIEEE Access, 2020
Barrier coverage aims at constructing defense barriers to detect the intruder crossing the predefined boundary in a given wireless sensor network. In literature, most studies considered the battery-powered sensors and applied the Boolean Sensing Model ...
Zaixiu Dong   +3 more
doaj   +1 more source

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