Graphical Abstract

Fukushima, H., T. Yazaki, T. Hirota, Y. Iwata, A. Wajima, and A. Yokota, 2019: Factors and mechanisms affecting the air temperature distribution on a clear winter night in a snow-covered mesoscale plain. J. Meteor. Soc. Japan, 97, 105-121. Abstract with highlights

Plain Language Summary: To clarify how the low temperatures in winter nights form, we analyzed the effects of topography and boundary-layer wind on the temperature distribution and vertical profiles of boundary-layer atmospheric conditions of the Tokachi region for a winter night using numerical simulations. From the distribution of vapor mixing ratio, we revealed unique processes of the development of surface temperature distribution influenced by inversion layer formation and katabatic drainage flow (Figures 1 and 2).