degree-day

Progress of the Application of Degree-Day Model to Study Glaciers and Snow Cover

度日模型在冰川与积雪研究中的应用进展

Studies on a model for equivalence degree-day accumulation of insects

昆虫当量积温模型的研究

Characteristics of heating degree-day and cooling degree-day in Fuxin , Liaoning province

阜新地区热度日和冷度日变化特征分析

Degree-day factor is an important parameter of degree-day model which is a widely used method for ice and snow melt computation .

在冰川与积雪消融研究中，度日模型应用较为广泛，该模型是基于冰雪消融与气温，尤其是正积温之间的线性关系建立的。

Despite its simplicity , it is demonstrated that the degree-day model is a powerful tool for ablation modeling on a catchment scale , rather than the energy balance models .

度日模型尽管是对冰雪表面消融能量平衡这一复杂过程的简化描述，但在流域尺度上，通常可以获取类似于能量平衡模型的输出结果。

The relationship between energy consumption and temperature often varies because of the different region , population and energy price . So some experts come up with some adjusting ways for calculating degree-day index .

能源消费与温度的关系往往因研究区域的范围、人口以及能源价格而变，因此一些学者提出了人口加权、面积加权、价格调整等度日指标的调整方法。

Dates of Accumulative temperature ( degree day ) from 10th April to 10th July in 1997-2003 were used for developing degree-day accumulative model that provided other sub-models with data of degree-day accumulation .

采用1997－2003年，4月10日至7月10日日积温，建立逐日累累积温预测子模型，为其它模型提供积温数据。

The developmental threshold temperature of 1 ~ 4 instar nymphs and whole nymph stage are estimated to be 12.5,7.8,10.3,4.1 and 9.3 ℃ respectively , and the effective accumulated temperatures for these stages are 14.6,43.9,29.9,31.9 and 117.2 degree-day respectively .

依据有效积温法则计算的1～4龄若蚜和全若虫期的发育起点分别是12.5,7.8,10.3,4.1和9.3℃，有效积温分别是14.6,43.9,29.9,31.9和117.2日.度。

Adult beetle emerged from mid-May to the first ten days of October , and oviposited in early June . The developmental threshold temperature of egg was 14.66 ± 0.5 ℃, and its effective accumulated temperature was 41.7 ± 20.85 degree-day .

成虫在5月中旬至10月上旬发生，6月初开始产卵，卵的发育起点温度为14.66±0.5℃，有效积温为41.7±20.85日·度，在25℃下卵期平均为3.69±0.25d；