Changes in the TRMM Version-5 and Version-6 Precipitation Radar Products Due to Orbit Boost

The performance of the version-5 and version-6 Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) products before and after the satellite orbit boost is assessed through a series of comparisons with Weather Surveillance Radar (WSR)-88D ground-based radar in Melbourne, Florida. Analysis of the comparisons of radar reflectivity near the storm top from the ground radar and both versions of the PR indicates that the PR bias relative to the WSR radar at Melbourne is on the order of 1 dB for both pre- and post-boost periods, indicating that the PR products maintain accurate calibration after the orbit boost. Comparisons with the WSR-88D near-surface reflectivity factors indicate that both versions of the PR products accurately correct for attenuation in stratiform rain. However, in convective rain, both versions exhibit negative biases in the near-surface radar reflectivity with version-6 products having larger negative biases than version-5. Rain rate comparisons between the ground and space radars show similar characteristics.

[1]  Robert F. Adler,et al.  On the Tropical Rainfall Measuring Mission (TRMM) , 1996 .

[2]  Toshio Iguchi,et al.  Validation of rainfall estimates from the TRMM precipitation radar and microwave imager using a radiative transfer model: 1. Comparison of the version‐5 and ‐6 products , 2006 .

[3]  J. Theon,et al.  Tropical rainfall measuring mission (TRMM) , 1987 .

[4]  Katsuhiko Nishikawa,et al.  Development of precipitation radar onboard the Tropical Rainfall Measuring Mission (TRMM) satellite , 2001, IEEE Trans. Geosci. Remote. Sens..

[5]  T. N. Krishnamurti,et al.  The status of the tropical rainfall measuring mission (TRMM) after two years in orbit , 2000 .

[6]  Toshio Iguchi,et al.  Comparisons of Rain Rate and Reflectivity Factor Derived from the TRMM Precipitation Radar and the WSR-88D over the Melbourne, Florida, Site , 2001 .

[7]  H. Chun,et al.  Impacts on the TRMM data due to orbit boost in the spectral domain , 2008 .

[8]  James W. Wilson,et al.  Radar Measurement of Rainfall—A Summary , 1979 .

[9]  M. Robinson,et al.  Climatological processing and product development for the TRMM ground validation program , 2000 .

[10]  Eugenio Gorgucci,et al.  Estimation of Raindrop Size Distribution Parameters from Polarimetric Radar Measurements , 2002 .

[11]  Christopher R. Williams,et al.  Uncertainties in Oceanic Radar Rain Maps at Kwajalein and Implications for Satellite Validation , 2004 .

[12]  Walter Hitschfeld,et al.  ERRORS INHERENT IN THE RADAR MEASUREMENT OF RAINFALL AT ATTENUATING WAVELENGTHS , 1954 .

[13]  David B. Wolff,et al.  Ground Validation for the Tropical Rainfall Measuring Mission (TRMM) , 2005 .

[14]  Emmanouil N. Anagnostou,et al.  The Use of TRMM Precipitation Radar Observations in Determining Ground Radar Calibration Biases , 2001 .

[15]  K. Beard,et al.  A New Model for the Equilibrium Shape of Raindrops , 1987 .

[16]  R. Meneghini,et al.  Validation of TRMM Precipitation Radar through Comparison of Its Multiyear Measurements with Ground-Based Radar , 2009 .

[17]  Nobuhiro Takahashi,et al.  Estimation of Path-Integrated Attenuation and Its Nonuniformity From TRMM/PR Range Profile Data , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[18]  Kenneth P. Bowman,et al.  Changes in TRMM Rainfall due to the Orbit Boost Estimated from Buoy Rain Gauge Data , 2007 .

[19]  Roscoe R. Braham Snow Particle Size Spectra in Lake Effect Snows. , 1990 .

[20]  WSR-88 D Radar Rainfall Estimation : Capabilities , Limitations and Potential Improvements , 2009 .

[21]  Donald W. Burgess,et al.  Recording, Archiving, and Using WSR-88D Data , 1993 .

[22]  Emmanouil N. Anagnostou,et al.  Calibration of the WSR-88D Precipitation Processing Subsystem , 1998 .

[23]  Eugenio Gorgucci,et al.  Measurement of Mean Raindrop Shape from Polarimetric Radar Observations , 2000 .

[24]  J. Marshall,et al.  THE DISTRIBUTION WITH SIZE OF AGGREGATE SNOWFLAKES , 1958 .

[25]  Jeffrey A. Jones,et al.  Use of the Surface Reference Technique for Path Attenuation Estimates from the TRMM Precipitation Radar , 2000 .

[26]  V. Chandrasekar,et al.  Quantitative Cross Validation of Space-Based and Ground-Based Radar Observations , 2000 .

[27]  D. Rosenfeld,et al.  The Window Probability Matching Method for Rainfall Measurements with Radar , 1994 .

[28]  Robert A. Houze,et al.  Comparison of Radar Data from the TRMM Satellite and Kwajalein Oceanic Validation Site , 2000 .

[29]  J. Marshall,et al.  THE DISTRIBUTION OF RAINDROPS WITH SIZE , 1948 .

[30]  K. Okamoto,et al.  Rain profiling algorithm for the TRMM precipitation radar , 1997, IGARSS'97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development.