Results 31 to 40 of about 20,211 (224)

An assessment of the performance of a 1.5 μm Doppler lidar for operational vertical wind profiling based on a 1-year trial [PDF]

Atmospheric Measurement Techniques, 2015
We present the results of a 1-year quasi-operational testing of the 1.5 μm StreamLine Doppler lidar developed by Halo Photonics from 2 October 2012 to 2 October 2013.
E. Päschke, R. Leinweber, V. Lehmann
doaj   +1 more source

ESA’s spaceborne lidar mission ADM-Aeolus; project status and preparations for launch

EPJ Web of Conferences, 2018
ESA’s Doppler Wind lidar mission, the Atmospheric Dynamics Mission (ADM-Aeolus, hereafter abbreviated to Aeolus), was chosen as an Earth Explorer Core mission within the Living Planet Programme in 1999.
Straume Anne Grete, Elfving Anders, Wernham Denny, de Bruin Frank, Kanitz Thomas, Schuettemeyer Dirk, Bismarck Jonas von, Buscaglione Fabio, Lecrenier O., McGoldrick Phil   +9 more
doaj   +1 more source

Assimilation of European and global Mode‐S aircraft observations into the Met Office global deterministic numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
European and global Mode‐S aircraft reports have been assimilated into the Met Office global deterministic numerical weather prediction model, improving forecast accuracy for wind, temperature, and geopotential height. This is the first time global Mode‐S network data have been assimilated, which include data from under‐observed regions, and has ...
Elliott Warren, Warren Tennant, Edmund Stone, Joanne Waller, Christopher Thomas, Adam Maycock   +5 more
wiley   +1 more source

Assessment of virtual towers performed with scanning wind lidars and Ka-band radars during the XPIA experiment [PDF]

Atmospheric Measurement Techniques, 2017
During the eXperimental Planetary boundary layer Instrumentation Assessment (XPIA) campaign, which was carried out at the Boulder Atmospheric Observatory (BAO) in spring 2015, multiple-Doppler scanning strategies were carried out with scanning wind ...
M. Debnath, G. V. Iungo, W. A. Brewer, A. Choukulkar, R. Delgado, S. Gunter, J. K. Lundquist, J. L. Schroeder, J. M. Wilczak, D. Wolfe   +9 more
doaj   +1 more source

Doppler lidar results from the San Gorgonio Pass experiments [PDF]

, 1984
During FY-84, the Doppler Lidar data from the San Gorgonio Pass experiments were analyzed, evaluated, and interpreted with regard to signal strength, signal width, magnitude and direction of velocity component and a goodness parameter associated with the
Cliff, W. C., Renne, D. S., Skarda, J. R.   +2 more
core   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

Design of a Data Acquisition, Correction and Retrieval of Na Doppler Lidar for Diurnal Measurement of Temperature and Wind in the Mesosphere and Lower Thermosphere Region

Remote Sensing, 2023
Based on the resonance fluorescence scattering mechanism, a narrowband sodium (Na) lidar can measure temperature and wind in the mesosphere and lower thermosphere (MLT) region.
Yuan Xia, Xuewu Cheng, Zelong Wang, Linmei Liu, Yong Yang, Lifang Du, Jing Jiao, Jihong Wang, Haoran Zheng, Yajuan Li, Faquan Li, Guotao Yang   +11 more
doaj   +1 more source

Using Fine Sediment Monitoring to Quantify Sand Loading Over Time

River Research and Applications, EarlyView.
ABSTRACT Riverine sand loading can lead to geomorphic change, impacting river processes like lateral migration and vertical aggradation or degradation. Yet many sediment monitoring programs track only fine sediment measurable as total suspended solids (TSS). Here, we assess the ability for TSS data to be used to determine sand loading.
Andrew P. Kasun, Karen B. Gran
wiley   +1 more source

Lidar Uncertainty Measurement Experiment (LUMEX) – Understanding Sampling Errors

EPJ Web of Conferences, 2016
Coherent Doppler LIDAR (Light Detection and Ranging) has been widely used to provide measurements of several boundary layer parameters such as profiles of wind speed, wind direction, vertical velocity statistics, mixing layer heights and turbulent ...
Choukulkar A., Brewer W.A., Banta R.M., Hardesty M., Pichugina Y., Senff Christoph, Sandberg S., Weickmann A., Carroll B., Delgado R., Muschinski A.   +10 more
doaj   +1 more source

Comparison of Lower Stratosphere Wind Observations From the USTC's Rayleigh Doppler Lidar and the ESA's Satellite Mission Aeolus

Earth and Space Science, 2022
Since the first spaceborne Doppler wind lidar, Aeolus, was launched, global wind field observations from space have been possible. Several ground‐ and air‐based validations followed, although most of these comparisons remained below 10 km in the ...
Chong Chen, Xianghui Xue, Dongsong Sun, Ruocan Zhao, Yuli Han, Tingdi Chen, Hengjia Liu, Yiming Zhao   +7 more
doaj   +1 more source