Precipitation Banding in Idealized Baroclinic Waves
Precipitation Banding in Idealized Baroclinic Waves
复制标题
理想化斜压波中的降水带
DOI：
10.1175/mwr-d-13-00343.1
复制
发表时间：
2014
影响因子：
3.2
通讯作者：
D. Schultz
中科院分区：
文献类型：
--
作者：
J. Norris;G. Vaughan;D. Schultz
湿理想斜压波模拟结果表明，一个纬向均匀的初始中纬度急流发展成降水带。在无摩擦的下边界条件下，没有潜热释放和地面热湿通量，暖平流较强，形成后向暖锋。虽然一个狭窄的垂直速度的最大值内的天气尺度上升的三相点附近的区域内的形式，只有一个广泛的暖锋带的形式。由于表面粗糙度的长度增加之间的模拟海洋，然后一个陆地表面，暖平流减少，冷锋变得更强，相对于暖锋。沿冷锋形成沿着独立的窄雨带，粗糙度越大，窄雨带越强，离宽暖锋带越远。在粗糙度长度与海洋相适应的模拟中，窄带衰减后，降水在暖区沿着暖输送带方向移动。当潜热释放在...
AbstractMoist idealized baroclinic-wave simulations show the development of precipitation bands from a zonally uniform initial midlatitude jet. For a frictionless lower boundary, and with no latent-heat release or surface heat and moisture fluxes, warm advection is strong and a bent-back warm front forms. Although a narrow vertical-velocity maximum forms within the area of synoptic-scale ascent near the triple point, only a wide warm-frontal band forms. As surface roughness length increases between simulations to that of an ocean then a land surface, warm advection is reduced and the cold front becomes stronger relative to the warm front. A separate narrow rainband forms along the cold front, which is more intense and farther removed from the wide warm-frontal band when roughness length is greater. In the simulation with roughness length appropriate to the ocean, after the narrow band decays, the precipitation becomes oriented along the warm conveyor belt in the warm sector. When latent-heat release is in...