An examination of the spatial and temporal extent of the climate memory of tropical cyclones
The spatial extent of the positive local MPI anomaly is found to be primarily influenced by the cooling of the ocean whose slow dynamic response allows for the oceanic memory of TCs to be longer. Storm relative sea surface temperature (SST) spatial anomalies, rotated to account for storm motion, show maximum SST cooling to the right of track on day 4 relative to TC passage with SST anomalies lasting up to 60 days or more. The restoration timescale of the SST anomaly was found to be longer than was previously stated in Hart et al. (2007). Positive storm relative atmospheric thickness anomalies are maximized on day 0 with areal coverage that is more symmetric and temporally transient than the oceanic anomalies.