Results 31 to 40 of about 8,388,711 (274)
Wind turbine load validation in wakes using wind field reconstruction techniques and nacelle lidar wind retrievals [PDF]
Wind Energy Science, 2020 Abstract. This study proposes two methodologies for improving the accuracy of wind turbine load assessment under wake conditions by combining nacelle-mounted lidar measurements with wake wind field reconstruction techniques. The first approach consists of incorporating wind measurements of the wake flow field, obtained from nacelle lidars, into random,
Davide Conti +3 more
openaire +3 more sources
Airborne direct-detection and coherent wind lidar measurements along the east coast of Greenland in 2009 supporting ESA’s Aeolus mission [PDF]
, 2011 The Aeolus mission of the European Space Agency (ESA) will send the first wind lidar to space to fulfill the utmost need for global wind profile observations.
Witschas, Benjamin +11 more
core +1 more source
Finite size scaling in the solar wind magnetic field energy density as seen by WIND [PDF]
, 2002 Statistical properties of the interplanetary magnetic field fluctuations can provide an important insight into the solar wind turbulent cascade. Recently, analysis of the Probability Density Functions (PDF) of the velocity and magnetic field fluctuations
Chapman, S.C. +8 more
core +1 more source
IEEE Access, 2020 The sea surface temperature (SST) actively impacts the backscattering coefficient measured by scatterometers and the wind retrieval accuracy. However, none of the geophysical model functions (GMFs) currently used in operational wind retrieval considers ...
Yihuan Peng +4 more
doaj +1 more source
Preliminary study on the causes of a downburst event in Tianjin in the summer of 2017
暴雨灾害, 2022 A severe thunderstorm gale event with several short-term rainfall,hail and downburst occurred in the southwest of Tianjin on 9 July 2017, during which two downbursts attacked successively Duliu Town,Jinghai District,Tianjin.
Yanchun WANG +4 more
doaj +1 more source
A pragmatic Bayesian approach to wind field retrieval [PDF]
, 2001 The ERS-1 Satellite was launched in July 1991 by the European Space Agency into a polar orbit at about 800 km, carrying a C-band scatterometer. A scatterometer measures the amount of backscatter microwave radiation reflected by small ripples on the ocean surface induced by sea-surface winds, and so provides instantaneous snap-shots of wind flow over ...
openaire +2 more sources
暴雨灾害High-quality three-dimensional wind field retrieval products from Doppler weather radars are essential data for studying and forecasting mesoscale weather systems.
Ran XU, Liping LIU
doaj +1 more source
WIND SHEAR IDENTIFICATION WITH THE RETRIEVAL WIND OF DOPPLER WEARTH RADAR [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 A new method, which based on the wind field retrieval algorithm of Volume Velocity Process (VVP), has been used to identified the intensity of wind shear occurred in a severe convection process in Guangzhou.
S. Zhou, Y. Cui, H. Zheng, T. Zhang
doaj +1 more source
Repair Wind Field of Oil Spill Regional Using SAR Data [PDF]
, 2015 In this paper, we compared the normalized radar cross section (NRCS) of the synthetic aperture radar in the cases of oil spill and clean sea areas with image samples and determined their thresholds of the NRCS of SAR. we used the NRCS of clean water from
Liu, X +5 more
core +1 more source
Effect of precipitation on synthetic aperture radar hurricane wind field retrieval
Frontiers in Environmental Science, 2022 C-band synthetic aperture radar (SAR) with all-weather observation capability is gradually being used for the high-resolution observation of hurricane. The extreme wind speed in hurricanes is retrieved by combining the co- and cross-polarized SAR signals.
Chaogang Guo +4 more
doaj +1 more source