RAINEX NOAA N42 P-3 Stepped Frequency Microwave Radiometer (SFMR) Version 2.0 Data NOAA/AOML/HRD has reprocessed all SFMR data using a new algorithm based off of Klotz and Uhlhorn, 2014 (hereafter KU2014). The updated algorithm improves the separation of the wind and rain in the microwave signal in order to reduce a high wind speed bias at wind speeds below ~60 kt. In so doing, rain rates are also more representative within the instrument limitations. A low bias in the strong wind speeds (> 120 kt) is reduced as well. If you have any questions about the KU2014 data processing please contact Brad Klotz (brad.klotz@noaa.gov). References Klotz, B. W., and E. W. Uhlhorn, 2014: Improved stepped frequency microwave radiometer tropical cyclone surface winds in heavy precipitation. J. Atmos. Oceanic Technol., 31, 2392–2408, doi:https://doi.org/10.1175/JTECH-D-14-00028.1. Uhlhorn, E. W., P. G. Black, J. L. Franklin, M. Goodberlet, J. Carswell, and A. S. Goldstein, 2007: Hurricane surface wind measurements from an operational stepped frequency microwave radiometer. Mon. Wea. Rev., 135, 3070–3085, doi:https://doi.org/10.1175/MWR3454.1.