15 research outputs found
IR absorption spectra of tetrabutylammonium biperchlorate and the structure of the anion H(ClO4) 2 ?
The Mixing State of Polar Stratospheric Cloud Particles in "Sandwich Structure" Observed by Lidar 2. Numerical Simulations of the Optical Properties of the Liquid and Solid Particles with External Mixture of STS and NAT Particles
Simulation of surface urban heat islands under ‘IDEAL’ conditions at night part 1: Theory and tests against field data
Observations show that the urban heat island in the atmospheric layer below roof level is most strongly developed during calm, cloudless conditions at night. This paper outlines two versions of a numerical model to describe the cooling of rural and street canyon surfaces under these conditions using surface thermal and radiative properties and the radiative geometry of the canyons. One version uses a full system of differential equations and the other the simpler force-restore approach. The two approaches are shown to be in general agreement and the output of the simpler model is shown to give a faithful representation of cooling of rural and urban surfaces, and therefore heat islands, when compared with field observations