Mitigation of Systematic Noise in F16 SSMIS LAS Channels Observations for Tropical Cyclone Applications

The Special Sensor Microwave Imager Sounder (SSMIS) onboard the Defense Meteorological Satellite Program (DMSP) F16, launched on 18 October 2003, was first conical-scanning radiometer to combine Microwave/Imagers (SSM/I), Microwave/Temperature (SSM/T), and Microwave/Water Vapor (SSM/T2). Nearly 20 years of F16 SSMIS data are available general public, providing many opportunities study atmosphere at both synoptic decadal scales. However, noise from complicated structures has occurred in brightness temperature (TB) observations lower atmospheric sounding (LAS) channels since 25 April 2013. We used a two-dimensional Fast Fourier Transform analyze characteristic features cross-track along-track directions. found that is around 1–2 K occurs certain wavelengths (Δλ)noise. A latitudinal variation for Due interference, TB reflecting rain, clouds, tropical cyclone warm core, temperature, water vapor distributions not readily distinguishable, especially above middle troposphere (channels 4–7 24), whose dynamic range smaller than low tropospheric 1–3. Examples provided show impact proposed mitigation capture 3D hurricanes directly. Once LAS 2013to present eliminated, we may investigate change cyclones derivable these observations.