投影网格中的坐标确定及在台风数值试验中的应用

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A METHOD TO PINPOINT THE KNOWN POINT COORDINATE IN THE RECTANGULAR GRID AND ITS CONTRIBUTION TO TROPICAL CYCLE TRACK SIMULATION

摘要: 在数值计算中,对于已知经纬度的某点,需确定其在不同投影法得到的矩形网格中的具体位置坐标。导出在极射赤面投影、麦卡托圆柱投影和兰勃脱正形圆锥投影等算法中确定位置坐标的精确公式。通过台风路径预报对比试验表明:该方法能有效地减少计算误差的引入,具有较好的应用价值。
- 地图投影 /
- 矩形网格 /
- 坐标 /
- 台风
Abstract: In this paper, the formulas for known point's coordinate in the rectangular are deduced and brought forward. They are commonly used in map projections, polar projection, Mercator's projection Lambert conformal conic projection are three of them. The tropical cycle track simulation shows that this method can decrease computing error and would have a broad prospect for operational practice.
- map projection /
- rectangular grid /
- coordinate /
- typhoon

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