Factors Affecting the Distribution and Spillover of Precipitation in the Southern Alps of New Zealand—A Case Study
Factors Affecting the Distribution and Spillover of Precipitation in the Southern Alps of New Zealand—A Case Study
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影响新西兰南阿尔卑斯山降水分布和外溢的因素——以案例研究
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
W. Gray
中科院分区：
文献类型：
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作者：
M. Sinclair;D. Wratt;R. Henderson;W. Gray
摘要 1994 年 11 月一场持续的西北风暴期间的雨量计、雷达和大气观测已被用来研究影响南阿尔卑斯山降水分布的因素。尽管有持续的西北气流，但这场风暴期间降水的位置和强度变化明显，为这些调查提供了极好的数据集。阿尔卑斯山北半部 36 个记录仪表的数据由 57 个每日仪表的数据补充，这些数据被划分为 6 小时的值。这些数据根据距高山分水岭的距离进行分组，每 6 小时建立一次最佳拟合横断面曲线，根据降雨强度进行归一化。落在背风流域的总断面降水量的比例在 0.11 到 0.70 之间变化，而“溢出距离”指数在 6 到 29 公里之间变化。与新西兰西海岸霍基蒂卡和欧洲气象中心的温度和风的大气剖面进行比较...
Abstract Rain gauge, radar, and atmospheric observations during a prolonged northwesterly storm in November 1994 have been used to study factors influencing the distribution of precipitation across the Southern Alps. Despite the persistent northwesterly flow, the location and intensity of precipitation varied markedly during this storm, providing an excellent dataset for these investigations. Data from 36 recording gauges in the northern half of the Alps were supplemented by data from 57 daily gauges, which were partitioned into 6-h values. These data were grouped according to distance from the alpine divide, and best-fit transect curves, normalized for rainfall intensity, were established every 6 h. The fraction of the total transect precipitation falling in leeside catchments varied between 0.11 and 0.70, while a “spillover distance” index varied between 6 and 29 km. Comparison with atmospheric profiles of temperature and wind from Hokitika on the west coast of New Zealand and with European Centre for M...