Tak mi się wydaje - zob. link

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Note added at 38 mins (2015-04-05 22:22:21 GMT)
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Źle umieściłam linka w example sentences i nie odsyła do strony, sorki. Poniżej ekstrakt z definicji:

friction between tyres and the road stop cars from skidding
friction between the brakes and wheel help bikes and cars slow down

po prostu

Dust emissions from the externalized surface 1. General ...
www.cnrm.meteo.fr/surfex/IMG/pdf/4_dust.pdf
Tłumaczenie strony
Dust is mobilized from dry desert surfaces when the wind friction speed reaches ... Dust is mobilized by two related processes called saltation and sandblasting.

Mentioned alongside temperature and cloud cover.


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Note added at 1 hr (2015-04-05 23:15:50 GMT)
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This data set contains climatological monthly means of heat fluxes and radiation budget over the global oceans, based on analyses of the Comprehensive Ocean-Atmosphere Data Set (COADS) for the period 1950 - 1979. All data are given on a 2 x 2 latitude/longitude grid. Meteorological and oceanographic parameters contained in this data set include air temperature, mixed layer temperature, precipitation, relative humidity, cloud cover, wind speed, sea level pressure, salinity, absorbed solar radiation, outgoing longwave radiation, net radiation, latent heat flux, sensible heat flux, net downward heat flux, net freshwater flux, buoyancy flux, frictional velocity, newtonian cooling rate, and transfer coefficient for latent heat. Precipitation data were prepared by Dennis Shea. It was derived from land or island station records and completed by satellite observations. Salinity data required to compute buoyancy fluxes were taken from Levitus. All input data were monthly mean climatological values except the surface salinity. Because of the small variation of the climatological mean surface salinity throughout the year, annual mean values were used.
http://iridl.ldeo.columbia.edu/SOURCES/.OBERHUBER/.dataset_d...
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Estimation of regional evaporation under different weather conditions from satellite and meteorological data: a case study in the Naivasha basin, Kenya (2001)
Existing remote sensing algorithms used to estimate evaporation from remotely sensed data differ in the way they describe the spatial variations of input parameters. An evaluation of the impact of spatially varying input parameters on distributed surface fluxes showed that the vertical near surface air temperature difference and frictional velocity were the most critical parameters.
http://lib.icimod.org/record/250
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Seasonal Climatology of Surface Energy Fluxes on the Great Lakes
The frictional velocity, temperature, and mixing ratio in the above equations are calculated as follows:
http://www.glerl.noaa.gov/ftp/publications/tech_reports/gler...
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The correlation of frictional velocity and the rainfall along lO.05°1atitude
cross section in the study area calculated by the model for a single day in
different months in the year 1984.

From that we can calculate the frictional velocity (U*) which is an indication of the surface frictional characteristics.
http://dyuthi.cusat.ac.in/xmlui/bitstream/handle/purl/21/Dyu...
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Effects of meteorological models on the solution of the surface energy balance
and soil temperature variations in bare soils
by the atmosphere and cloud cover, and Rlu" is the sum of the out- ..... sphere temperature (K) at zref, and U* is the frictional velocity de-.
http://www.pc-progress.com/Documents/Jirka/Saito_et_al_JH_20...