沿海地区海气感热通量的中尺度变率观测

IF 4.6 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Sheng Chen, Siyuan Wu, Wenzheng Jiang, Fangli Qiao, Zhanli Wang
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引用次数: 0

摘要

利用两个塔式平台在沿海地区10公里范围内的同步通量观测,研究了海气感热通量的中伽马尺度变率。观测结果表明,空间HS $\text{HS}$变率与10 m风速U 10 ${U}_{10}$和海气温差均呈统计学弱相关∆T$ \mathit{{\increment}}T$。虽然U 10 ${U}_{10}$在两个站点之间大致一致,但出现了显著的∆T$ \mathit{{\increment}}T$差异,特别是在连接两个站点的平行线上。尽管在特定的测量点或时间偶尔发生变化,但HS $\text{HS}$的特征显示了两个站之间的统计一致性。与批量算法的对比分析表明,批量HS $\text{HS}$的差异可以部分解释观测到的∆T$ \mathit{{\increment}}T$的变化。然而,观测到的HS $\text{HS}$量级大大超过了总体估计值,两个站之间根据观测得出的热流通量交换系数相差1.6倍。这些发现强调了加强高分辨率直接通量测量以验证参数化方案的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Observed Meso-Gamma Scale Variability of Air-Sea Sensible Heat Flux in a Coastal Region

Observed Meso-Gamma Scale Variability of Air-Sea Sensible Heat Flux in a Coastal Region

Observed Meso-Gamma Scale Variability of Air-Sea Sensible Heat Flux in a Coastal Region

Observed Meso-Gamma Scale Variability of Air-Sea Sensible Heat Flux in a Coastal Region

The meso-gamma scale variability of air-sea sensible heat flux HS $\text{HS}$ was investigated using synchronized flux observations from two tower-based platforms within 10 km over coastal regions. Observations revealed statistically weak correlations between spatial HS $\text{HS}$ variability and both 10 m wind speed U 10 ${U}_{10}$ and air-sea temperature difference T $\mathit{{\increment}}T$ . While U 10 ${U}_{10}$ roughly consistent between the two stations, significant T $\mathit{{\increment}}T$ discrepancies emerged, particularly along the parallel line connecting the two sites. Despite occasional variations at specific measurement points or times, the HS $\text{HS}$ characteristics demonstrated statistical consistency between the two stations. Comparative analysis with the bulk algorithm indicated that bulk HS $\text{HS}$ differences could partially explain observed T $\mathit{{\increment}}T$ variations. However, observed HS $\text{HS}$ magnitudes substantially exceeded bulk estimates, and the heat flux exchange coefficients derived from observations differ by 1.6 times between the two stations. These findings highlight the necessity for enhanced high-resolution direct flux measurements to validate parameterization schemes.

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来源期刊
Geophysical Research Letters
Geophysical Research Letters 地学-地球科学综合
CiteScore
9.00
自引率
9.60%
发文量
1588
审稿时长
2.2 months
期刊介绍: Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.
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