基于长时间序列ERA-Interim再分析资料的广东沿海波浪能资源分布特征分析

波浪能的开发利用作为海洋可再生能源发展的重要组成部分,持续受到社会和学界的广泛关注。广东省波浪能资源的开发利用具有得天独厚的优势,但其发展水平还处于探索阶段,亟须进一步加强。本文利用长达40年(1979—2018年)的ERA-Interim再分析波浪资料,从总体分布特征上分析了广东沿海波浪能资源及其长期变化趋势。粤东-珠江口-粤西沿岸一线,波浪能资源呈现"低-高-低-高-低"的分布特征,具有显著的季节变化特征;长期变化趋势上呈现显著的逐年线性递增特征,递增速率为0.054 3 kW/(m·a),其中1979—1994年变化较为快速,2001—2018年变化较为平缓。

Evolution characteristics of wave energy resources in Guangdong coastal area based on long time series ERA-Interim reanalysis data

An important marine renewable energy, wave energy development and utilization has been widely concerned by society and academia. The development and utilization of wave energy resources in Guangdong Province has unique advantages, but it''s still in the exploratory stage. Based on the ERA-Interim reanalysis wave data for 40 years (1979-2018), this paper analyzes the wave energy resources and its long-term variation trend in Guangdong coastal area from the overall distribution characteristics. The wave energy resources along the east of Guangdong, the Pearl River Estuary and the west coast of Guangdong show the distribution characteristics of "low -high-low -high -low", with significant seasonal variation. The long-term trend shows significant linear increasing year by year, with an increasing trend of 0.054 3 kW/(m?a), in which the change is relatively rapid from 1979 to 1994 and relatively gentle from 2001 to 2018.