نتایج جستجو برای: surface wind directions

تعداد نتایج: 795135  

2001
Paulo S. Polito John P. Ryan W. Timothy Liu Francisco P. Chavez

Tropical instability waves (TIWs) are detected in remotely-sensed sea surface height (SSH), temperature (SST), and wind records of the eastern equatorial Pacific. Analyses of TIW anomaly relationships reveal strong dynamical influence of TIWs within approximately 5 of the equator. The first influence is advective heat flux. The primary forcing of TIW SST anomalies is advection of the meridional...

2001
F. M. Monaldo D. R. Thompson R. C. Beal

Spaceborne synthetic aperture radars (SARs) measure surface radar cross section (RCS) with ground resolutions from 25 to 100 m. In turn, the RCS of the ocean surface is a function of wind speed and direction. Over the past few years, we have been routinely using RCS measured by the RADARSAT SAR to compute highresolution wind speed. We have converted over 3000 wide-swath SAR RCS images, provided...

F. Aloui R. Mestiri* S. Ben Nasrallah

The technique used to control the airflow is based on the electro-hydrodynamic actuator which is also called plasma actuator. This actuator ensures the airflow control thanks to the electric wind created by the electrical corona discharge. This ionic wind is developed at the profile surface tangential to the initial free airflow so that it has a significant effect on the boundary layer flow. Th...

2017
Diederik Aerts Jonito Aerts Arguelles Lester Beltran Suzette Geriente Massimiliano Sassoli de Bianchi Sandro Sozzo Tomas Veloz

In the first half of this two-part article [1], we analyzed a cognitive psychology experiment where participants were asked to select pairs of directions that they considered to be the best example of Two Different Wind Directions, and showed that the data violate the CHSH version of Bell’s inequality, with same magnitude as in typical Bell-test experiments in physics. In this second part, we c...

Journal: :IEEE Trans. Geoscience and Remote Sensing 1999
Simon Yueh William J. Wilson Steve J. Dinardo Fuk K. Li

‘1’hc smsitivitics of wind direction signals i)) ]Jassivc microwal’c brightness temperatures of sea surfaces to wind slwccl, incidcncc angle, polarization, and frequency are prwmted in this paper. ‘1’l)c cx]witncntal data were accluircd from ,a series of aircraft flights fro:n 1994 through 1996 by the Jet l’ropulsiorl Laboratory (JPL) using JP1i 19 and 37 G1lz polaritnetric radiometers (WINDRAI...

2014
Sonia Wharton Matthew Simpson Jessica L. Osuna Jennifer F. Newman Sebastien C. Biraud Stephan De Wekker

The Weather Research and Forecasting (WRF) model is used to investigate choice of land surface model (LSM) on the near surface wind profile, including heights reached by multi-megawatt (MW) wind turbines. Simulations of wind profiles and surface energy fluxes were made using five LSMs of varying degrees of sophistication in dealing with soil–plant–atmosphere feedbacks for the Department of Ener...

2017
Baolei Lv Jun Cai Bing Xu Yuqi Bai

Long-term air quality observations are seldom analyzed from a dynamic view. This study analyzed fine particulate matter (PM2.5) pollution processes using long-term PM2.5 observations in three Chinese cities. Pollution processes were defined as linearly growing PM2.5 concentrations following the criteria of coefficient of determination R2 > 0.8 and duration time T ≥ 18 hrs. The linear slopes qua...

2007
IL-JU MOON ISAAC GINIS TETSU HARA BIJU THOMAS

A new bulk parameterization of the air–sea momentum flux at high wind speeds is proposed based on coupled wave–wind model simulations for 10 tropical cyclones that occurred in the Atlantic Ocean during 1998–2003. The new parameterization describes how the roughness length increases linearly with wind speed and the neutral drag coefficient tends to level off at high wind speeds. The proposed par...

2014
David H. Richter Daniel P. Stern

It has long been conjectured that spray ejected from the high-wind ocean surface enhances air/sea enthalpy fluxes, but a lack of observational data, particularly at wind speeds exceeding 20 m s−1, has prevented either confirmation or refutation of this hypothesis. The current study has two aims: first, to provide an estimate of surface enthalpy fluxes obtained from dropsonde data and second, to...

1997
CLARA DESER CATHERINE A. SMITH

The climatological large-scale patterns of diurnal and semidiurnal near-surface wind variations over the tropical Pacific Ocean are documented using 3 yr of hourly measurements from the Tropical Atmosphere–Ocean moored buoy array. Semidiurnal variations account for 68% of the mean daily variance of the zonal wind component, while diurnal variations account for 82% of the mean daily variance of ...

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