long term weather forecast meaning in English

长期天气预报

The significant correlations between the precipitation in characteristic periods of time in different regions are considerable factors for mid - long term weather forecast
划分了表征各区域降水典型特征的特征时段，不同区域特征段降水量间的显著相关可以作为中长期天气预报的参考因子。
There are significant statistical correlations among temporal coefficients of spatial patterns of dekad precipitation . lag correlations and cross correlations can be viewed as one clue to mid - long term weather forecast
旬降水量空间型时间系数间存在显荚的统计相关，将时问系数间的1相关和互相关作为中长则天气预报的一干！