The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks
Figure 3
The predicted typhoon tracks for the runs initialized at 1800 UTC, 11 September 2008. The left column shows the tracks and the right column shows the forecast error defined by the distance between the predicted and observed (best) track. (a) and (b): the 10 cases with LEN_SCALING = 1.0 and VAR_SCALING = 0.1–1.0 step 0.1. The color scale for the 10 cases with increasing VAR_SCALING is shown at the upper left corner of panel (f). The black curve is the control run with no AIRS data and the blue curve is the observed best track. (c) and (d): similar to (a) and (b) but for the 10 runs with LEN_SCALING = 0.5 and VAR_SCALING = 0.1–1.0 step 0.1. (e) and (f): same as (a) and (b) but for the 10 runs with LEN_SCALING = 0.1 and VAR_SCALING = 0.1–1.0 step 0.1.
