[AAS02-P04] Remote response of a developing tropical cyclone over the western North Pacific to large-scale vapor transport from the Kuroshio in boreal fall
Keywords:tropical cyclone, moisture transport, Kuroshio Current
When LHF was removed or reduced over the Kuroshio under the dominance of the northwesterly flow, TC intensity attenuated during its developing stage even though TC was fairly far away from the Kuroshio. Since no or little modification of dry air parcels occurred in the atmospheric boundary layer over the Kuroshio, contribution of those parcels to latent heat release around Chaba’s eyewall become small. Furthermore, dry air penetration into TC’s inner core region may act as an inhibitor of convection within that region, resulting in deceleration of the TC development. These findings were consistent with another TC (Typhoon Toakge 2004) with a similar synoptic environment, increasing reliability of remote impact of moisture import from the Kuroshio on TC development.