The Effects of Rain on Topex Radar Altimeter Data

摘要: Abstract Rain has long been categorized as a contaminant of altimeter data, but little done previously to ascertain the magnitude and frequency its effect or geographical distribution. Proceeding from recent analysis ERS-1 insight gained, this paper addresses all these issues, highlighting particular advantages Topex's dual-frequency capability. The primary rain is on observed backscatter values σ0 through attenuation radar signal. An empirical relationship derived linking at C band Ku band. Through series case studies global analyses, prominent departures are shown be caused by regions significant precipitation. As it predominantly Ku-band returns that affected, C-band σ0,s likely great use for determination wind speeds in events intense rain. different rates give altimetry potential yield inform...