Investigation of the atmospheric surface layer using a novel high-resolution sensor array
Investigation of the atmospheric surface layer using a novel high-resolution sensor array
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使用新型高分辨率传感器阵列研究大气表面层
DOI：
10.1007/s00348-021-03173-z
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发表时间：
2021
影响因子：
2.4
通讯作者：
Hultmark, M.
中科院分区：
文献类型：
--
作者：
Huang, K. Y.;Brunner, C. E.;Fu, M. K.;Kokmanian, K.;Morrison, T. J.;Perelet, A. O.;Calaf, M.;Pardyjak, E.;Hultmark, M.
在数值天气预报中，将陆-气交换过程表示为下边界条件仍然是一个挑战。一个重要的原因是缺乏对地形、土地覆盖、稳定性的非均质性及其对流场和标量输运各方面的影响的认识。高分辨率的流量测量可以揭示这些近地表过程，从而改进建模方法。然而，正是这些不均匀的特征——以及尺度的巨大分离——使得现场测量非常具有挑战性。为了解决探测大气表层时遇到的一些困难，围绕纳米级热风速探测技术设计了一个独特且经济可扩展的现场测量平台，该技术先前已在实验室环境中成功用于高雷诺数。纳米级传感器的小尺寸不仅提供了高空间分辨率，而且还允许使用相同的恒流操作电路进行速度和温度测量。这种操作模式比传统的恒温风速测量系统更经济，更直接，为多点测量提供了可扩展的平台。该测量平台部署在犹他州西部沙漠的表层湍流和环境科学试验场，作为量化表面非均匀性的理想水平平面阵列研究的一部分。在距离地面1米的范围内获得的流向速度和温度数据在频谱行为上与众所周知的壁面边界流动的标度规律非常吻合。图形抽象
AbstractRepresenting land-atmosphere exchange processes as lower boundary conditions remains a challenge in numerical weather predictions. One important reason is the lack of understanding of heterogeneities in topography, land cover, stability, and their effects on all aspects of the flow field and scalar transport. Well-resolved flow measurements can shed light on these near-surface processes, yielding improved modeling approaches. Yet, it is precisely the heterogeneous characteristics in question—along with the large separation of scales—that make field measurements notoriously challenging. To address some of the difficulties encountered in probing the atmospheric surface layer, a unique and economically scalable field measurement platform was designed around the nanoscale thermal anemometry probe technology, which has previously been used successfully at high Reynolds numbers in laboratory settings. The small size of the nanoscale sensors not only provides a high spatial resolution but also allows for velocity and temperature measurements with the same constant current operating circuit. This operating mode is more economical and straightforward to construct than conventional constant temperature anemometry systems, providing a scalable platform for multi-point measurements. The measurement platform was deployed at the Surface Layer Turbulence and Environmental Science Test site in Utah’s West Desert as part of the Idealised horizontal Planar Array study for Quantifying Surface heterogeneity. Streamwise velocity and temperature data were acquired within the first meter above ground with good agreement in spectral behavior to well-known scaling laws in wall-bounded flows.Graphic Abstract
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DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
D. Mironov;P. Sullivan
通讯作者：
P. Sullivan
基于经典相似定律和附加涡假设的壁面湍流闭合
DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
A. Perry;I. Marusic;J. D. Li
通讯作者：
J. D. Li
网格生成湍流测量中的热线空间分辨率效应
DOI：
--
发表时间：
2012
期刊：
Proceeding of Seventh International Symposium on Turbulence and Shear Flow Phenomena
影响因子：
--
作者：
A. Ashok;S. Bailey;M. Hultmark;A. Smits
通讯作者：
A. Smits
作为海森堡和奥布霍夫湍流理论基础的传输过程
DOI：
--
发表时间：
1954
期刊：
影响因子：
--
作者：
C. Tchen
通讯作者：
C. Tchen
影响因子：
3.7
作者：
A. Perry;J. D. Li
通讯作者：
A. Perry;J. D. Li