CAJ | 학술논문

为了提升对海洋实测资料的标准化处理水平，基于 Argo 资料最优插值客观分析实验，对目前被广泛应用的背景误差协方差矩阵经验公式进行了改进，设计了一种提高海洋资料分析精度的方法，简称梯度依赖相关尺度法。利用高斯脉冲和空间能量谱分析方法，在理论上验证了梯度依赖相关尺度法对 Argo 客观分析精度改进的有效性。通过太平洋海域Argo温、盐度资料客观分析表明，利用海洋水文要素梯度变化对相关尺度进行自动调整可以提高分析方案的适应能力，得到的分析结果更接近海洋客观情况。该方法适用于数据同化或客观分析，同时，在不增加计算量的前提下，可以达到与提高网格密度相同的分析效果，从而更易于进行海洋资料标准化。
위료제승대해양실측자료적표준화처리수평，기우 Argo 자료최우삽치객관분석실험，대목전피엄범응용적배경오차협방차구진경험공식진행료개진，설계료일충제고해양자료분석정도적방법，간칭제도의뢰상관척도법。이용고사맥충화공간능량보분석방법，재이론상험증료제도의뢰상관척도법대 Argo 객관분석정도개진적유효성。통과태평양해역Argo온、염도자료객관분석표명，이용해양수문요소제도변화대상관척도진행자동조정가이제고분석방안적괄응능력，득도적분석결과경접근해양객관정황。해방법괄용우수거동화혹객관분석，동시，재불증가계산량적전제하，가이체도여제고망격밀도상동적분석효과，종이경역우진행해양자료표준화。
To promote marine data processing of standardization level,the optimal interpolation obj ective a-nalysis of the Argo data was conducted,and improvements were made to the empirical formula of a back-ground error covariance matrix widely used in data assimilation and obj ective analysis systems.Specifical-ly,an estimation of the correlation scales that can improve effectively the accuracy of Argo obj ective analy-sis was developed.This method can automatically adapt to the gradient change of a variable and is referred to as “gradient-dependent correlation scale method”.Its effect on the Argo obj ective analysis was verified theoretically with Gaussian pulse and spectrum analysis.The results of the obj ective analysis of the tem-perature and salinity data in Pacific Ocean show that the gradient-dependent correlation scales can improve the adaptability of the obj ective analysis system,making it possible for the analysis scheme to fully absorb the shortwave information of observation in areas with larger oceanographic gradients.This scales can be used for any assimilation methods.This scheme has the same effect in improving the grid density,and is more suitable for standardizing the ocean observations.