<i>Z</i>-<i>R</i> Relation with Its Application to Typhoon Precipitation in Zhoushan

He Kuanke; Fan Qiping; Li Kaiqi; Chen Shuqin; Gong Yan

Vol.18, NO.4, 2007

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2007 > 18(4): 573-576

He Kuanke, Fan Qiping, Li Kaiqi, et al. z-r relation with its application to typhoon precipitation in Zhoushan. J Appl Meteor Sci, 2007, 18(4): 573-576.

Citation:

He Kuanke, Fan Qiping, Li Kaiqi, et al. z-r relation with its application to typhoon precipitation in Zhoushan. J Appl Meteor Sci, 2007, 18(4): 573-576.

He Kuanke, Fan Qiping, Li Kaiqi, et al. z-r relation with its application to typhoon precipitation in Zhoushan. J Appl Meteor Sci, 2007, 18(4): 573-576.

Citation:

He Kuanke, Fan Qiping, Li Kaiqi, et al. z-r relation with its application to typhoon precipitation in Zhoushan. J Appl Meteor Sci, 2007, 18(4): 573-576.

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Z-R Relation with Its Application to Typhoon Precipitation in Zhoushan

Zhoushan Meteorological Bureau, Zhoushan 316000

Received Date: 2006-01-11
Rev Recd Date: 2007-01-16
Publish Date: 2007-08-31

Abstract

Abstract

Using the typhoon base data of Dopplar weather radar and Zhejiang automatic precipitation station data in 2004 and 2005, the Z-R relation of typhoon precipitation suiting the local area is set up, which is confirmed to be available. It is applied to estimate the precipitation of typhoon "Nanmadol" and "Khanun", with comparing with the real precipitation and the estimated precipitation based on Z-R relation of American WSR-88D. It shows that in an area with small rainfall, the estimated precipitation by use of Z-R relation of American WSR-88D is more close to the fact than the precipitation with using the target relation. However, in an area with heavy rainfall, the latter is more close to the fact than the former, which the rainfall is seriously underestimated. Also, causes of the main error are further studied.
- Z-R relation;
- base data;
- base reflectivity;
- precipitation rate

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References(15)

Figures and Tables

图 1 反射率因子Z和降水率R散点图

Fig. 1 The scatterplot of the relation between reflectivity Z and precipitation rate R

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图 2 Z=70R^1.38和Z=300R^1.4曲线图

Fig. 2 Curves of Z=70R^1.38 and Z=300R^1.4

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图 3 “卡努”台风在舟山市部分地区的实际降水、Z=70R^1.38和Z=300R^1.4估测降水对比柱状图

Fig. 3 Comparison between real precipitation and estimated precipitation based on forms Z=70R^1.38 and Z=300R^1.4 of typhoon “Khanvn” in part areas of Zhoushan

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表 1 自动雨量站点分布及与舟山雷达相对位置

Table 1 Location of Zhoushan auto-precipitation stations and the relative radar

表 2 各台风、各地点Z-R关系及其误差对比

Table 2 Z-R relation and corresponding error comparison of typhoons in precipitation stations of Zhoushan

表 3 Z=70R^1.38和Z=300R^1.4不同反射率因子值对应的降水率 (单位:mm/h)

Table 3 The relation of reflectivity rate and precipitation calculated by forms Z=70R^1.38 and Z=300R^1.4 (unit:mm/h)

表 4 “南玛都”台风各测站降水估测对比 (单位:mm)

Table 4 Real estimated precipitation comparison of typhoon "Nanmadol" of precipitation stations in Zhoushan (unit:mm)

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