The approach of this study was to determine, theoretically, what impact current and future urban land use in the coastal city of Houston, Texas has on the space and time evolution of precipitation on a `typical' summer day. Regional model simulations of a case study for 25 July 2001 were applied to investigate possible effects of urban land cover on precipitation development. Simulations in whi...

The introduction into a mesoscale model of random (in space) variations in roughness length, or random (in space and time) surface perturbations of temperature and friction velocity, produces a measurable, but barely significant, response in the simulated flow dynamics of the lower atmosphere. The perturbations are an attempt to include the effects of sub-grid variability into the ensemble-mean...

Sea-breeze dynamics in southern France is investigated using an airborne Doppler lidar, a meteorological surface station network and radiosoundings, in the framework of the ESCOMPTE experiment conducted during summer 2001 in order to evaluate the role of thermal circulations on pollutant transport and ventilation. The airborne Doppler lidar WIND contributed to three-dimensional (3-D) mapping of...

[1] It is often assumed that ventilation of the atmospheric boundary layer is weak in the absence of fronts, but is this always true? In this paper we investigate the processes responsible for ventilation of the atmospheric boundary layer during a nonfrontal day that occurred on 9 May 2005 using the UK Met Office Unified Model. Pollution sources are represented by the constant emission of a pas...

Our knowledge of sea breeze remains poor in the coastal area East China, due largely to high terrain heterogeneity. Five–year (2016–2020) consecutive wind observations from a 10-m tower and radar profiler are used characterize sea–land at Qingdao, city China. The surface temperatures nearby buoy station Yellow Sea further elucidate land–sea thermal contrast. First all, three types determined ac...

Analyzing a 6-km resolution atmospheric simulation of Southern California from 1995 to the present, we characterize climatological diurnal cycles of surface air temperature and winds. We find that these quantities have significant spatial structure due to dynamical links between them. The large daily warming and cooling over land induces expected flows across the coastline and elevation isoline...

The Advanced Regional Prediction System is used to perform a three-dimensional numerical simulation of land–water circulations near Cape Canaveral, Florida. Three two-way nested grids having spacings of 1.6, 0.4, and 0.1 km are employed. Results show that the structures of both the sea and river breezes compare well with observation and theory. Horizontal convective rolls (HCRs), Kelvin–Helmhol...