Correction of Canopy Interception Loss Measurements in Temperate Forests: A Comparison of Necessary Adjustments among Three Different Rain Gauges Based on a Dynamic Calibration Procedure
Correction of Canopy Interception Loss Measurements in Temperate Forests: A Comparison of Necessary Adjustments among Three Different Rain Gauges Based on a Dynamic Calibration Procedure
复制标题
DOI：
10.1175/jhm-d-17-0124.1
复制
发表时间：
2018-03
影响因子：
3.8
通讯作者：
S. Iida;D. Levia;K. Nanko;Xinchao Sun;Takanori Shimizu;K. Tamai;Yoshinori Shinohara
中科院分区：
文献类型：
--
作者：
S. Iida;D. Levia;K. Nanko;Xinchao Sun;Takanori Shimizu;K. Tamai;Yoshinori Shinohara
翻斗式雨量计被广泛用于测量森林中总降雨量和总雨量的强度，尽管它们的系统性低估是众所周知的事实。据作者所知，对预算敏感的戴维斯仪(雨收集器II，戴维斯仪器，加利福尼亚州)的动态校准尚未出版。因此，在不同的恒定流入强度下，对5个Davis压力计进行了动态标定，并推导出修正方程。得到的戴维斯雨量计校正式为V=−0.2005Q_2+0.702Q+1(R2=0.95，p<；0.001)，其中V是用单尖静态体积c(cm~3 cm−~3)表示的单尖实际体积，Q是用c(S−1)表示的实际入流流量。然后，将Davis雨量计与起始雨量计和Ota雨量计进行了比较，并对日本温带森林林冠截留损失的野外观测数据进行了修正。有必要对总辐射进行修正。
ABSTRACTTipping-bucket rain gauges are used widely to measure the amount and intensity of gross rainfall and throughfall in forests, despite the fact that their systematic underestimations are well known. To the knowledge of the authors, no dynamic calibrations for the budget-conscious Davis gauge (Rain Collector II, Davis Instruments, California) have been published. Thus, five Davis gauges were dynamically calibrated under different constant intensities of inflow and a correction equation was derived. The derived correction equation for the Davis rain gauge is V = −0.2005Q2 + 0.702Q + 1 (R2 = 0.95, p < 0.001), where V is the actual volume of a single tip scaled by the static volume of single tip c (cm3 cm−3), and Q is actual inflow scaled by c (s−1). The Davis rain gauge was then compared to the Onset rain gauge and the Ota rain gauge, and the corrections were applied to field observation data of canopy interception loss from a temperate forest in Japan. It is necessary to apply corrections to gross rai...