Hiromaru Hirakuchi

TL;DR: In this article, the changes of a sea breeze and a daytime heat island due to land-use alteration during an 85-year period (1900-1985) have been numerically simulated.

TL;DR: In this paper, two continuous 5-year-long simulations over eastern Asia and the Japan islands, one for present-day climate (control) and one for climate under doubled carbon dioxide concentration (2×CO2) are completed with a regional climate model nested, in a one-way mode, within a general circulation model (GCM).

TL;DR: In this paper, the performance of the NCAR regional climate model (RegCM) for east Asia, where topography and shoreline are rather complex, is examined through experiments to simulate the climate during 1 month using ECMWF data as lateral boundary conditions, before its application in the nested GCM/RegCM method to predict future climate changes caused by global warming.

TL;DR: In this article, the authors used the RegCM2.5 developed by NCAR, using the output of a CO2 transient run from NCAR-CSM as lateral and surface boundary conditions in order to evaluate the performance of the nested system for the use of climate change simulation caused by global warming for that region.

TL;DR: It is difficult to control a conventional wavemaker so as to generate incident waves with a prescribed spectrum when multiple reflection takes place between the highly reflective structure and wave as discussed by the authors. But it is possible to control such a wavemaker with a defined spectrum.