E-601B型蒸发器与小型蒸发器测值对比分析

Contrast Analysis of E-601BVersus Small-Sized Evaporation Pans

通过塔城国家基准站1985—2001年非冰期(4—10月)E-601B型与小型蒸发器逐月蒸发量对比观测数据及塔城水文站2009—2011年3年冰期(11月至次年3月)冰面蒸发对比观测数据,应用比值法和多元线性回归方法,计算了两种蒸发量之间的折算系数。结果表明:小型蒸发器蒸发量与E-601B型蒸发器蒸发量存在很好的线性相关关系,相关系数非冰期为0.877,冰期为0.924;折算系数非冰期为0.596,冰期为0.349,为有效利用长序列、单站点小型蒸发器观测资料提供了依据。

By means of the contrast observation evaporation data from E-601B and the small-sized evaporator data from 1985 to 2001 during the unfrozen period （April to October） at Tacheng National Standard Climatic Station and the contrast-observation evaporation data from 2009 to 2011 during the frozen period （November to March） from the Tacheng Hydrological Station, the conversion coefficient is acquired by the ratio method and the multiple linear regression analysis method. Results show that the data arrays from contrast observation evaporation appear linearly correlated. The correlation coefficient is 0. 877 in the unfrozen period and 0. 924 in the frozen period. The conversion coefficient is 0. 596 in the unfrozen period and 0. 349 in the frozen period. It provides important basis for using long-sequence single observation data of small-sized evaporation pans.