Real-time NAM parallel test

Evaluation results for NAM parallel:

1. PRECIPITATION THREAT AND BIAS SCORES

2. UPPER AIR STATISTICS

3. NEAR-SURFACE STATISTICS


:

14 June 2007 - 8 August 2007: ops NAM vs pll NAM with 20% reduction of raob data in the stratosphere

The NAM parallel log with further details can be found here.


1. PRECIPITATION THREAT AND BIAS SCORES

CONUS,
24-84 hour forecasts

NAM parallel

Eastern US, 24-84 hour forecasts

NAM parallel

Western US, 24-84 hour forecasts

NAM parallel


2. UPPER AIR STATISTICS

24/48/72-h forecasts on one plot, 00z/12z combined

Parameter CONUS RMS Error CONUS Bias Error Alaska RMS Error Alaska Bias Error
Height X X X X
Temperature X X X X
Relative Humidity X X X X
Wind X X

FIRST GUESS UPPER AIR STATISTICS (00z/12z combined)

Parameter CONUS RMS Error CONUS Bias Error
Height X X
Temperature X X
Relative Humidity X X
Wind X


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PRIVACY / COLLECTION OF INFORMATION STATEMENT