TCAR - Typhoon Committee

58
ESCAP/WMO
Typhoon Committee Annual Review 2009
Figure 21 Equitable threat scores of three-hourly
accumulated precipitation forecasts in summer
(right) and winter (left). The red and green lines
show the results of JNoVA (Test) and Meso 4D-Var
(CTRL), respectively. The horizontal axis represents
the threshold values of the rainfall amount.
Figure 22 Three-hourly accumulated precipitation of
24-hour forecasts from the 15 UTC initial time on
17 Aug. 2006. From the left, analyzed precipitation,
the forecast of JNoVA and that of Meso 4D-Var are
shown.
(KRA1, 2, 4, 5, 7)
a-4. Improvements to JMA’s Typhoon Ensemble
Prediction System (TEPS)
In June 2009, the Japan Meteorological Agency
(JMA) upgraded the forecast model used for
its Typhoon Ensemble Prediction System (TEPS).
This model is a low-resolution version (TL319L60,