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2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated

2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated • Old satellites drift • But still useful! HRPP’s use “all” sensors • Timing of version changes for both input and HRPP algorithms • Sensor degradation CDR-like GPCP

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2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated

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  1. 2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated • Old satellites drift • But still useful! HRPP’s use “all” sensors • Timing of version changes for both input and HRPP algorithms • Sensor degradation CDR-like GPCP • Limit microwave calibrator to 6 a.m./ p.m. satellite • Consistent diurnal bias

  2. 2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated • Old satellites drift • But still useful! HRPP’s use “all” sensors • Timing of version changes for both input and HRPP algorithms • Sensor degradation CDR-like GPCP • Limit microwave calibrator to 6 a.m./ p.m. satellite • Consistent diurnal bias

  3. 2. ESTIMATION – Microwave data International constellation of microwave sensors is uncoordinated • Old satellites drift • But still useful! HRPP’s use “all” sensors • Timing of version changes for both input and HRPP algorithms • Sensor degradation CDR-like GPCP • Limit microwave calibrator to 6 a.m./ p.m. satellite • Consistent diurnal bias

  4. CURRENT ISSUES – Combination errors • Need to estimate bias outside usual validation areas • • Very resistant to solution • Need to estimate HRPP random error • • Depends on weather regimes • • Time/space covariance structure • • real • • retrieval • Account for diverse interleaved sources • • Graphic looks better than the real situation orange = best microwave ± 1 hr green = other microwave ± 1 hr

  5. CURRENT ISSUES – Combination errors • Need to estimate bias outside usual validation areas • • Very resistant to solution • Need to estimate HRPP random error • • Depends on weather regimes • • Time/space covariance structure • • real • • retrieval • Account for diverse interleaved sources • • Graphic looks better than the real situation orange = best microwave ± 1 hr green = other microwave ± 1 hr

  6. CURRENT ISSUES – Combination errors • Need to estimate bias outside usual validation areas • • Very resistant to solution • Need to estimate HRPP random error • • Depends on weather regimes • • Time/space covariance structure • • real • • retrieval • Account for diverse interleaved sources • • Graphic looks better than the real situation orange = best microwave ± 1 hr green = other microwave ± 1 hr

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