山谷风

植被对山谷风环流形成与演变过程影响的数值试验

Numerical experiments of the effects of vegetation of mountain-valley wind circulation

根据渡口市空气污染监测资料首次鉴别出一种特殊形式的空气污染过程&山谷风转换期的漫烟过程。

A special form of air pollution called fumigation with mountain-valley wind shift is first distinguished based on air pollution monitoring data in Dukou city .

结果表明，表层雪的pH值和电导率具有明显的季节变化趋势，与本区域的主导山谷风风向NE和ENE密切相关。

PH and electrical conductivity in surface snow show obvious seasonal variations , which to some extent are associated with the dominant NE and ENE valley wind .

用非静力中尺度模式MM5对北京的山谷风和热岛进行模拟，模拟试验证实了热岛漂移现象。

Simulate urban heat island and valley-mountain breeze in Beijing by non-hydrostatic version of Mesoscale numerical model MM5 , it approves that Beijing 's urban heat island actually drifts .

济南市城市热岛和山谷风环流的模拟研究

A Simulation of Heat Island Circulation and Mountain-Valley Breeze in Jinan

兰州地区山谷风环流的二维数值模拟

Two Dimensional Numerical Simulation of the Mountain Valley Wind Circulation in Lanzhou Region

山谷风

Mountain and Valley Breezes

该区地方气候分为三种不同尺度的类型（山区动力热力性环流，山谷风环流和冰川局地环流）。

The local climate can be classified into three categories , that is the mountain scale , the valley scale and the glacier scale .

作者重点模拟和分析了济南地区两种典型的中尺度局地环流&城市热岛环流和山谷风环流。

The emphasis of the research is put on the simulation of the local circulations in Jinan , such as heat island circulation , mountain-valley breeze .

结果表明：①在山谷风环流和热岛环流相互作用下形成了北京城市边界层流场特有的局地环流。

The analysis shows that ① the formation and evolution of the local circulation in the urban boundary layer is influenced by the mountain breeze circulation and heat island circulation together .

分析发现明显的山谷风环流、河谷渠道效应以及漫烟现象和局地工业热源影响等流场特征，实测得到三维大气扩散参数。

The analysis shows that there are some obvious and significant flow patterns in mountainous area , such as valley breeze , channel wind , fumigation and thermal effect of industrial sources etc.

植被覆盖度越大，山谷风环流形成时间越滞后，风速越小，环流强度越弱，维持时间越短。

The larger the vegetation cover , the later the formation , the less the wind velocity , the weaker the circulation strength , and the shorter the persistence time of the mountain-valley wind circulation .

通过与去城市下垫面敏感性试验的对比，系统地分析了城市下垫面对兰州市边界层、山谷风环流、地表辐射平衡及地表能量平衡的影响程度。

A sensitivity experiment that without urban underlying is designed to investigate the effects of urban underlying on urban boundary layer structures , valley wind circulation , land surface radiation balance and land surface energy budget .

热岛中心在决定边界层环流的辐合区位置上起相对较大的作用，边界层环流的强度和发展高度由山谷风强度和热岛强度共同决定。

The heat island center has relatively significant impact on the location of the convergence zone , while the intensities of mountain breeze and heat island determine jointly the intensity and the evolving height of the boundary-layer circulation .

此外，当大范围系统风较弱时，珠江三角洲大气边界层还受局地海陆风、城市热岛环流和山谷风的共同影响。

Moreover , when the wind of large range system was weak relatively , atmospheric boundary layer of Pearl River Delta was also controlled by the combined influence of the sea-land breeze , urban heat island circulation and the mountain-valley wind .

直升机整晚在天空盘旋，向快速蔓延的火势喷水，目前大火已烧至科切拉山谷西端风电场上方的山区。

Helicopters flew all night dropping water on the fast moving blaze now burning in the hills above wind farms on the western edge of the Coachella Valley .