Numerical study of lake-land breeze over Lake Vättern, Sweden

This paper describes a two- dimensional lake breeze model With turbulent energy closure. The simulated results show that (1) the front of the lake breeze progresses inland faster in the late afternoon than at the fully developed stage;(2) the lake breeze and land breeze have larger extension offshore than inland. The acceleration of the front in the declining phase of the lake breeze is explained in terms of the decreased turbulent friction acting on the head of the lake breeze. The larger extension offshore, probably, is attributed to the smaller roughness of water surface and to the offshore synoptic wind

Numerical analysis of initialization procedure in a two-dimensional lake breeze model

This paper describes the dynamic initialization procedures of a two-dimensional lake breeze model, based on radiosonde data at one site. Three approaches of initialization have been tested. The results prove that dynamical balance between mass and momentum fields can be obtained from unbalanced, inexact first guesses, but there is an obvious difference between resufts calculated with each initialization procedure. In comparison, we found that the approach, onedimensional dynamic initialization with nudging, probably is preferable to the others