天空状况

选取了该区近35a出现初霜的资料，经过分析研究发现，初霜冻的出现和高空环流形势及地面的天空状况有直接的关系。

The materials which are selected in this area in about recent 35 years . From analyzing and researching , the appears of primary frost has the direct relation to the upper air circulation situation and the overland sky condition .

发现海陆风明显的季节变化和日变化对当地气温、降水、湿度及天空状况等气象要素的空间和时间分布影响显著。

The results show that the variation of daily and seasonal land and sea breeze obviously affects the spatial and temporal distribution of the local temperature , precipitation , moisture , and cloud condition .

通过数轴凝聚，对1998、1999年常州市气象站的逐日蒸发量的变化范围并结合天空状况等因素进行分类，以此作为晾晒指数等级的划分标准。

Combined with the sky conditions etc , the changing range of Changzhou Meteorological Station ′ s day evaporation in 1998 and 1999 is classified by condensing number axis , which is used for the dividing criterion of drying index grade .

这主要是由于影响海洋光谱因素较多，难以精确模拟；海上原位测量困难较大，风浪、阴影、天空状况等影响因素众多，都可以对结果引起较大误差，难以通过实验测量。

This is mainly because many factors affect the marine spectrum and it is not easy to simulate accurately ; It is very difficult to measure BRDF in situ . Sea waves , shadows , sky conditions can lead to large errors on the results .

依照有利霜冻的天气形势与反映气团性质、天空状况的要素结合数值预报产品，建立霜冻概念模型，判断霜冻强度对提高预报精度有明显效果。

This paper establishes the frost conceptual model to judge the frost intensity by combining the essential factors of air-mass property and the sky situation and the numerical forecasting product according to the advantageous frost synoptic situation . This shows an obviously effect for improving the accuracy of the forecast .

亦即地面辐射平衡的地理分布形式由地理纬度和地面反射率所决定，但正、负中心的数值还受天空遮蔽状况的影响。

In other words , the spatial distribution pattern of surface radiation balance over the plateau is decided on the geographic latitude and surface albedo , but the amounts of both positive and negative value areas are affected by cloud cover .