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大气科学  2006 

基于遗传算法的四维变分资料同化技术的研究

DOI: 10.3878/j.issn.1006-9895.2006.02.07

Keywords: 遗传算法,变分资料同化,交叉,变异

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Abstract:

将遗传算法应用于四维变分资料同化问题,提供一种新的较为有效的数值预报初始场优化方法,给出了相应的理论依据和详细算法,并结合变分问题本身的特点,设计合理的遗传编码、遗传操作和遗传参数.同时,以二维的浅水方程模式为例建立基于遗传算法的变分同化模型,并从多方面与伴随模式变分同化方案进行分析比较.数值试验结果表明,基于遗传算法的变分同化方案取得了比较满意的同化效果.

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