TO IMPROVE THE OBJECTIVE POSITION PRECISION OF TC WITH GIS

Lu Xiaoqin; Lei Xiao tu

Vol.16, NO.6, 2005

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2005 > 16(6): 841-848

Lu Xiaoqin, Lei Xiao tu. To improve the objective position precision of tc with GIS. J Appl Meteor Sci, 2005, 16(6): 841-848.

Citation:

Lu Xiaoqin, Lei Xiao tu. To improve the objective position precision of tc with GIS. J Appl Meteor Sci, 2005, 16(6): 841-848.

Lu Xiaoqin, Lei Xiao tu. To improve the objective position precision of tc with GIS. J Appl Meteor Sci, 2005, 16(6): 841-848.

Citation:

Lu Xiaoqin, Lei Xiao tu. To improve the objective position precision of tc with GIS. J Appl Meteor Sci, 2005, 16(6): 841-848.

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TO IMPROVE THE OBJECTIVE POSITION PRECISION OF TC WITH GIS

Shanghai Ty phoon Institute, Shanghai 200030

Received Date: 2004-07-06
Rev Recd Date: 2005-08-15
Publish Date: 2005-12-31

Abstract

Abstract

Supported by GIS technology, an objective TC (Tropical Cyclone) center positioning system integrating much data and arithmetic is performed. All kinds of vector and raster layer data, such as Quikscat wind distribution on the ocean, weather state, forecast state, different satellite images and different band images of the same satellite, are super positioned together and analyzed in this system. It is helpful to show TC characters in many ways. Many TC center positioning methods, such as analyzing cloud form, finding the warmest point on cloud and eroding or dilating cloud image to find TC center, are synthesized to make TC center positioning more objective, precision and roboticized, center of 0203, 0209, 0212, 0417 and 0419 TC are positioned by this system. The result shows that the precision of this system is close to that of operation TC center positioning. It proves that this system could be applied in operation
- Tropical Cyclone (TC);
- Objective position of tropical cyclone center;
- GIS

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References(15)

Figures and Tables

图 1 利用DVOR AK模式方法实现“云图形态定位法”客观化的定位个例

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图 2 利用“ 数学形态学方法”实现“ 云图形态定位法” 客观化的定位过程及结果

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图 3 利用“云顶亮温极值法”的定位个例

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图 4 多种客观定位结果的集成(暂取几何中心)

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图 5 定位系统框图

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图 6 TC 客观定位系统界面

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表 1 0203，0209 和0212 号TC定位结果与业务定位和最佳定位的偏差

表 2 0417 和0419 号TC 定位结果与业务定位和最佳定位的预定位的偏差

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