Ensemble Adaptive Data Assimilation Techniques Applied to Land-Falling North American Cyclones - Data Assimilation for Atmospheric, Oceanic and Hydrologic Applications - page 562

Fig. 23.10 Average value of the maximum variance reduction of the response function for all
observation types for both deepening ( light purple ) and decaying ( dark purple ) cyclones
Fig. 23.11 Average value of the maximum variance reduction of the response function for all
observation types for cyclones approaching the North American coast from the northwest, west,
southwest, and south