The impact of land cover change on storms in the Sydney Basin, Australia

摘要: Abstract This study has used a numerical model (RAMS) at 1 km horizontal grid intervals over the Sydney Basin to assess impact of land cover change on storms. Multiple storms using National Center for Environmental Prediction (NCEP) reanalysis data were simulated with pre-European settlement then re-simulated representing Sydney's current use pattern. While all did not respond in consistently, similar types responded comparable ways. All synoptically forced (e.g. those triggered by cold fronts) unresponsive changed surface, while local convective highly sensitive triggering mechanism associated surface influences. Storms travelling smoother agricultural south-west experienced an increase velocity, and special case, dense urban city core appears trigger intense storm. It is shown that dynamical setting predominantly triggers storm outbreaks. seen most clearly isolated category where sea breeze front often dictates location cell initiation.