An application of scatterometer signal phase information for the determination of near sea surface wind speed and near surface air and water temperatures difference

<title>Synergy of altimeter signal amplitude and phase information for evaluation of sea wave and atmospheric stratification conditions</title>

“…Calculations have not been made for wind friction velocities, u 12cm 1 s. In accordance with [3] such a temperature behaviour of the variance of altimeter signal frequency distribution is typical for any tilted angle of observation and is independent of the resolution cell's radius, for r0 > 20m . The results of Fig.2 show that the variance of altimeter signal frequency distribution depends significantly on two parameters: on sea surface wind speed and on the difference of near surface air and water temperatures.…”

“…Therefore, under fully developed Taking into account also that amplitude and phase characteristics of altimeter signals reflected from the sea surface may be considered as a quasi independent values, by a decision of the above set of functional dependencies it is possible to determine simultaneously the sea surface wind speed and a condition of atmospheric stratification. Such a method of determination of sea surface wind speed and the difference of near surface air and water temperatures, but for microwave scatterometry, was developed in [3]. …”

“…The results of last researches have shown the necessity joint processing of the results of altimeter and scatterometer observations [1], or of the results of Doppler radar and scatterometer observations [2,3]. It is necessary for unambiguous and high precise solutions of an inverse-problem of a sea surface microwave active remote sensing, applied to the determination of sea surface wave and near surface wind fields' parameters, as well as for estimation of atmospheric stratification condition.…”