Development and Application of a Global Satellite Database of Wind and Wave Conditions
Development and Application of a Global Satellite Database of Wind and Wave Conditions
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DOI：
10.1115/omae2015-41039
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
I. Young;S. Zieger;A. Babanin
中科院分区：
文献类型：
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作者：
I. Young;S. Zieger;A. Babanin
海洋卫星现已运行近30年，收集关于海洋风和海浪的全球数据。在此期间，各种卫星一直在运行。其中包括高度计（风速和波高）、SSMI辐射计（风速）、散射计（风速和风向）和合成孔径雷达（SAR）（全方向波谱）。来自这些仪器的数据可能是海上工程设计和设施运行的宝贵资源。本文介绍了一个独特的数据库的发展，其中包含所有这些仪器在其整个操作期间的数据。本文将描述所有仪器的校准和交叉验证。该分析显示了单个仪器的局限性和相对精度。根据美国、加拿大、英国、法国、西班牙、澳大利亚和新西兰提供的非常全面的浮标数据集对仪器进行校准。广泛的浮标数据集意味着有可能拥有单独的校准浮标和独立的验证站点。通过检查不同卫星仪器在同一时间对同一海洋区域成像的交叉点，提供了进一步的验证，文件还将演示该数据库的应用。这些应用包括评估全球范围内的季节性风和波浪气候，确定风速和波高的极值统计（100年返回值），风速和波高的长期趋势以及极值的潜在趋势。Copyright © 2015 by ASME
Oceanographic satellites have now been in operation for almost 30 years, collecting global data on oceanic winds and waves. During this period, a variety of satellites have been operational. These include altimeters (wind speed and wave height), SSMI radiometers (wind speed), scatterometers (wind speed and direction) and Synthetic Aperture Radar, SAR (full directional wave spectrum). Data from these instruments potentially represents an invaluable resource for offshore engineering design and facilities operation. This paper describes the development of a unique database containing data from all these instruments over their full periods of operation. The paper will describe the calibration and cross-validation of all instruments. This analysis shows the limitations of individual instruments and the relative accuracies. Instruments are calibrated against a very comprehensive buoy data set from the United States, Canada, UK, France, Spain, Australia and New Zealand. The extensive buoy dataset means that it is possible to have individual calibration buoys and independent validation sites. Further validation is provided by examining cross-over points between different satellite instruments where they image the same region of ocean at the same time.The paper will also demonstrate the application of this database. These applications include the evaluation of seasonal wind and wave climate on a global scale, the determination of extreme value statistics (100 year return values) for wind speed and wave height, long term trends in wind speed and wave height and potential trends in extreme values.Copyright © 2015 by ASME