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| 1 | 地球大数据缘起和进展显示文摘进入信息时代以来,数据总量呈爆炸式增长,数据的类型、结构、维度也更加复杂多样,远远超出了传统数据库的管理和处理能力,逐渐向“大数据”方向转变.大数据是用于描述超出常规处理能力的数据集术语,其内涵不仅包含海量的数据本身,也包含对这些数据集的存储、处理与分析方法.当前,大数据已经成为国家信息主权的体现,并已在人类社会发展中发挥重要作用^([1,2]). | 郭华东 梁栋 | 2024 | 科学通报2024，69，1： | 0 |
| 2 | Performance analysis of global HYCOM flow field using Argo profiles显示文摘Flow field data generated by ocean models are important for simulating ocean currents and circulation patterns,which are essential components in digital Earth construction.To evaluate the accuracy of model-simulatedflow felds,Array for Real-timeGeostrophic Oceanography(Argo)float observations can be considered benchmarks.In this study,a novel method for comparing Argo profiles with 3-dimensional trajectories obtained by simulating Argo floats in Hybrid Coordinate Ocean Model(HYCOM)-provided flow fields was proposed.Surface and subsurface trajectories were calculated,and their spatial matching characteristics were analyzed.The results demonstrated that(1)the HYCOM surface and subsurface flow felds generally conform to the basic characteristics and trends of ocean currents;(2)the HYCOM sea surface current field error pattern exhibits a symmetrical distribution centered on the equator in the Northern and Southern Hemispheres and increases with increasing latitude;and(3)the HYCOM subsurface flow field exhibits regional differences,with the largest differences in the Gulf Stream,North Atlantic Warm Current,and Westerly Wind Drift region.Through analysis of the disparities between HYCOM and Argo data,the effectiveness of using model simulation data can be enhanced,and the accuracy and dependability of ocean models can be improved. | Yixuan Zhang Songshan Yue Kai Xu Zhuo Zhang Liangcheng Zhou Yihan Zhang Guonian Lü | 2023 | International Journal of Digital Earth2023，16，1： | 0 |
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