利用改进的多源卫星高度测量融合方法绘制东北太平洋和西北大西洋的高分辨率显波高度图

IF 2.8 2区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Hongbin Yang, Bingchen Liang, Huijun Gao, Zhuxiao Shao
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引用次数: 0

摘要

显著波高(SWH)是反映波浪状态的重要参数,在海洋工程中具有重要意义。然而,目前的波浪观测方法在获取高空间分辨率的波浪场数据方面存在局限性。在本研究中,为了生成东北太平洋和西北大西洋的 SWHs 场,我们融合了多源卫星高度计数据(CRYOSAT-2、SARAL、JASON-3、SENTINEL-3A、SENTINEL-3B、HY-2B 和 CFOSAT),空间分辨率为 0.125° x 0.125°,时间分辨率为 1 天。我们采用反距离加权法(IDW)和基于 IDW 的时空法(IDW-ST)进行数据融合。融合结果显示出一致的空间分布特征,但 IDW 方法的结果显示出可见的轨迹。此外,包含时间因素的 IDW-ST 方法在融合后的 SWH 和浮标数据之间显示出很好的一致性。然而,当网格点附近的水深变化对融合有很大影响时,水深地形的复杂性使得传统的二维空间融合方法显得力不从心。因此,本文在 IDW-ST 融合方法的基础上提出了一种改进方法,该方法引入了水深因子,在水深变化对融合结果影响较大的区域显著提高了融合精度。所提出的方法可用于生成可靠的 SWH 场,特别是在复杂的水深地形条件下,为海洋基础设施设计、海洋能源利用和海洋灾害防护提供重要支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High-resolution mapping of significant wave heights in the Northeast Pacific and Northwest Atlantic using improved multi-source satellite altimetry fusion method
Significant wave height (SWH) is an important parameter to reflect wave state, which is of great significance in ocean engineering. However, the current wave observation methods have limitations in capturing wave field data with high spatial resolution. In this study, to generate the SWHs field over the Northeast Pacific and Northwest Atlantic, multi-source satellite altimeter data (CRYOSAT-2, SARAL, JASON-3, SENTINEL-3A, SENTINEL-3B, HY-2B and CFOSAT) are fused with a spatial resolution of 0.125° x 0.125° and a temporal resolution of 1 day. We employ the Inverse Distance Weighting (IDW) method and the IDW-based spatiotemporal (IDW-ST) method for data fusion. The fusion results exhibit a consistent spatial distribution characteristic, but the results of the IDW method display the visible trajectory. Moreover, the IDW-ST method, which incorporates time factors, shows great agreement between the fused SWH and buoy data. However, when the water depth change near the grid point has a great influence on the fusion, the complexity of bathymetric topography makes the traditional two-dimensional spatial fusion methods inadequate. Therefore, an improved method is proposed based on the IDW-ST fusion method, which introduces the water depth factor and significantly enhances fusion accuracy in regions where bathymetric variations greatly affect fusion results. The proposed method can be used to generate reliable SWH fields, especially in complex bathymetric topography conditions, and provide significant support for marine infrastructure design, ocean energy utilization and marine disaster protection.
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来源期刊
Frontiers in Marine Science
Frontiers in Marine Science Agricultural and Biological Sciences-Aquatic Science
CiteScore
5.10
自引率
16.20%
发文量
2443
审稿时长
14 weeks
期刊介绍: Frontiers in Marine Science publishes rigorously peer-reviewed research that advances our understanding of all aspects of the environment, biology, ecosystem functioning and human interactions with the oceans. Field Chief Editor Carlos M. Duarte at King Abdullah University of Science and Technology Thuwal is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, policy makers and the public worldwide. With the human population predicted to reach 9 billion people by 2050, it is clear that traditional land resources will not suffice to meet the demand for food or energy, required to support high-quality livelihoods. As a result, the oceans are emerging as a source of untapped assets, with new innovative industries, such as aquaculture, marine biotechnology, marine energy and deep-sea mining growing rapidly under a new era characterized by rapid growth of a blue, ocean-based economy. The sustainability of the blue economy is closely dependent on our knowledge about how to mitigate the impacts of the multiple pressures on the ocean ecosystem associated with the increased scale and diversification of industry operations in the ocean and global human pressures on the environment. Therefore, Frontiers in Marine Science particularly welcomes the communication of research outcomes addressing ocean-based solutions for the emerging challenges, including improved forecasting and observational capacities, understanding biodiversity and ecosystem problems, locally and globally, effective management strategies to maintain ocean health, and an improved capacity to sustainably derive resources from the oceans.
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