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Toward a framework for systematic error modeling of nasa spaceborne radar with noaa/nssl ground radar-based national mosaic qpe
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Howard, K. Honh, Y. Flamig, Z. Amitai, E. Schwaller, M. Petersen, W. Gourley, J. J. Kirstettier, Pierre-Emmanual Zhang, J. Chen, S. |
| Copyright Year | 2011 |
| Description | Characterization of the error associated to satellite rainfall estimates is a necessary component of deterministic and probabilistic frameworks involving space-born passive and active microwave measurement") for applications ranging from water budget studies to forecasting natural hazards related to extreme rainfall events. We focus here on the error structure of NASA's Tropical Rainfall Measurement Mission (TRMM) Precipitation Radar (PR) quantitative precipitation estimation (QPE) at ground. The problem is addressed by comparison of PR QPEs with reference values derived from ground-based measurements using NOAA/NSSL ground radar-based National Mosaic and QPE system (NMQ/Q2). A preliminary investigation of this subject has been carried out at the PR estimation scale (instantaneous and 5 km) using a three-month data sample in the southern part of US. The primary contribution of this study is the presentation of the detailed steps required to derive trustworthy reference rainfall dataset from Q2 at the PR pixel resolution. It relics on a bias correction and a radar quality index, both of which provide a basis to filter out the less trustworthy Q2 values. Several aspects of PR errors arc revealed and quantified including sensitivity to the processing steps with the reference rainfall, comparisons of rainfall detectability and rainfall rate distributions, spatial representativeness of error, and separation of systematic biases and random errors. The methodology and framework developed herein applies more generally to rainfall rate estimates from other sensors onboard low-earth orbiting satellites such as microwave imagers and dual-wavelength radars such as with the Global Precipitation Measurement (GPM) mission. |
| File Size | 1244592 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110023570 |
| Archival Resource Key | ark:/13960/t21c6zx9r |
| Language | English |
| Publisher Date | 2011-10-14 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Meteorological Radar Satellite-borne Instruments Trmm Satellite Precipitation Meteorology Random Errors Estimates Forecasting Tropical Regions Rain Precipitation Measurement Systematic Errors Detection Microwaves Earth Orbits Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
