Results 41 to 50 of about 20,430 (225)

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

Latent Heat Flux and TKE measurements from the combined use of Water Vapour Raman and Wind Doppler Lidars during WaLiNeas Campaign [PDF]

EPJ Web of Conferences
Measurements of latent heat flux profiles in the daytime convective boundary layer were carried out in the frame of the WaLiNeAs field campaign, taking advantage of the combined use of two ground-based lidars: a water vapour Raman lidar and a wind ...
Summa Donato, D'Amico Giuseppe, Gandolfi Ilaria, Di Paolantonio Marco, Dionisi Davide, Rosoldi Marco, De Rosa Benedetto, Di Girolamo Paolo   +7 more
doaj   +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

Virtual Doppler Lidar Instrument

Journal of Atmospheric and Oceanic Technology, 2001
Abstract Doppler lidars measure the range-resolved line-of-sight wind component by extracting the Doppler shift of radiation backscattered from atmospheric aerosols and molecules. A virtual instrument was developed to simulate wind measurements by flying virtually over the atmosphere.
Leike, I., Streicher, J., Werner, C., Banakh, V., Smalikho, I., Wergen, W., Cress, A.   +6 more
openaire   +2 more sources

Characteristics of unique cap, Tsurushi and Hata clouds around Mount Fuji

Weather, EarlyView.
Distinct clouds, such as cap clouds, Tsurushi (a type of lenticular cloud) and Hata (banner cloud‐like clouds), frequently form around Mount Fuji, an isolated peak with a slightly elliptical conical shape. Here, we examine their characteristics and occurrence patterns.
Hiroyuki Kusaka, Tomoko Kodama, Riho Ito, Tomoka Maeda, Natsuki Takada, Rio Ishikawa, Kakeru Konnai, Risa Asano, Miru Maebata, Ken T. Murata   +9 more
wiley   +1 more source

Observations of Wind Profile of Marine Atmosphere Boundary Layer by Shipborne Coherent Doppler Lidar

EPJ Web of Conferences, 2016
Pulsed Coherent Doppler Lidar (CDL) system is so good as to prove the feasibility of the marine atmosphere boundary layer detection. A ship-mounted Coherent Doppler lidar was used to measure the wind profile and vertical velocity in the boundary layer ...
Wu Songhua, Yin Jiaping, Liu Bingyi, Liu Jintao, Zhang Hongwei, Song Xiaoquan, Zhang Kailin   +6 more
doaj   +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

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

Development and Demonstration of Navigation Doppler Lidar for Planetary Landing Missions [PDF]

EPJ Web of Conferences
A coherent Doppler lidar has been developed by NASA for providing vector velocity and altitude data to landing vehicles. Future robotic and manned missions to planetary bodies demand precise ground-relative velocity and altitude data to execute complex ...
Amzajerdian Farzin, Hines Glenn D., Gragossian Aram, Acevedo Elisa Leal, Hsu Jonathan, Laughter Sean. A., Dostart Nathan A., Heppler Jacob M., Follman Jacob J., Liles Kaitlin A.K., Martin Kimberly J., Litton Daniel. K.   +11 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