The correlation of Skylab L-band brightness temperatures with antecedent precipitation

摘要: The S194 L-band radiometer flown on the Skylab mission measured terrestrial radiation at microwave wavelength of 21.4 cm. terrain emissivity this is strongly dependent soil moisture content, which can be inferred from antecedent precipitation. For data acquisition pass Oklahoma panhandle to southeastern Texas 11 June 1973, brightness temperatures are highly correlated with precipitation preceding eleven day period, but very little correlation was apparent for five period. coefficient between averaged index values and corresponding 230 K 270 K, region response in data, -0.97. equation linear least squares line fitted was: API (cm) = 31.99 -0.114 TB (K), where temperature.