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Bias Monthly Rain Rate Difference
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Figure C. Histogram of monthly rain rate differences from gauge rain rate for TRMM and GPCC rain rates (unit: mm/day) for Oklahoma from January 1998 to November 2003.
*Monthly rain rate difference=Algorithm_rain_rate-Gauge_rain_rate
| Algorithm | Average_bias from the gauge (mm/day) | RMSE |
| 3B42 | 0.81 | 1.41 |
| 3B43 | -0.28 | 0.65 |
| TMI | 0.6 | 2.22 |
| TPR | 0.82 | 2.01 |
| TCI | 0.78 | 1.84 |
Table 4. TRMM algorithms biases and root mean square error (RMSE) against CD rain rates (unit: mm/day).
| | 3B42 | 3B43 | TMI | TPR | TCI | GPCC |
| Annual | 33.4 | -11.4 | 24.9 | 34 | 32.1 | -17.5 |
| MAM | 42.9 | -8.9 | 35.4 | 51.8 | 46.8 | -17.8 |
| JJA | 47.1 | -12.7 | 88.5 | 48.9 | 38.2 | -18.9 |
| SON | 6.8 | -19.5 | 1.1 | 13.1 | 15 | -14.9 |
| DJF | 36.2 | -1.6 | -52.6 | 11.1 | 22.2 | -18.9 |
Table 5. Percent bias to CD rain rate for TRMM algorithms and GPCC rain rates.
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Atmos Composition
