Estimating the Transmittance of Visible Solar Radiation in the Upper Ocean Using Secchi Disk Observations
Estimating the Transmittance of Visible Solar Radiation in the Upper Ocean Using Secchi Disk Observations
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利用塞奇盘观测估算上层海洋可见太阳辐射的透射率
DOI：
10.1029/2018jc014543
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发表时间：
2019-03
影响因子：
3.6
通讯作者：
Zoffoli Laura
中科院分区：
文献类型：
--
作者：
Lee Zhongping;Shang Shaoling;Du Keping;Lin Gong;Liu Tongtong;Zoffoli Laura
可见太阳辐射(VSR)的穿透推动了上层水柱的加热和浮游植物的光合作用，因此，准确地描述VSR在海洋中的垂直分布总是很重要的。在现代光电仪器发明和应用于测量振动沉沙的垂直方向之前，通常根据水体类型估算振动沉向深海的透过率，并将其纳入动态海洋环流模型中。然而，塞奇圆盘深度(ZSD)的测量始于19世纪60年代，目前全球海洋中大约有100万个ZSD数据。由于Z-SD代表了水的透明度，本文提出了一种基于辐射传递的方案，以Z-SD作为唯一的输入来精确估计T-VSR。结果表明，在近海和大洋涡旋测量中，T VSR的模型与实测值之比的中位数为~0.8~1.0，范围为1~100%。然而，当应用经典的基于水的模型时，对于相同的测量，这一中位数比率跨度约为0.04-1.0。这些结果表明，在结合体积Z-SD数据来模拟过去100多年的动态海洋-大气系统方面，具有很大的优势，而且可能具有重大的fi影响。基于简单语言摘要，利用数值模拟的方法，将可见太阳辐射(VSR)的透过率(T VSR)模拟为Secchi圆盘深度(Z SD)的函数。该方案进一步使用来自数值模拟和fi场的数据进行了评估
Penetration of visible solar radiation (VSR) drives heating and phytoplankton photosynthesis in the upper water column; thus, it is always important to accurately describe the vertical distribution of VSR in the oceans. Before the invention and application of modern optical ‐ electronic instruments to measure the vertical pro fi les of VSR, the transmittance of VSR from surface to deeper ocean ( T VSR ) was commonly estimated based on water types and subsequently incorporated in dynamic ocean circulation models. However, the measurement of Secchi disk depth ( Z SD ) has been carried out since the 1860s and there are about a million of Z SD data available for the global oceans. Because Z SD represents a measure of water's transparency, here we present a scheme based on radiative transfer to accurately estimate T VSR with Z SD as the sole input. It is found that the median ratios between modeled and measured T VSR are ~0.8 – 1.0 for T VSR in a range of 1 – 100% for measurements made in coastal waters and oceanic gyres. However, this median ratio spans ~0.04 – 1.0 for the same measurements when the classical water ‐ type ‐ based model was applied. These results suggest a great advantage, and potentially signi fi cant impact, in incorporating the volumetric Z SD data to model the dynamic ocean – atmosphere systems in the past 100+ years. Plain Language Summary Based radiative transfer and using numerically simulated the transmittance ( T VSR ) of visible solar radiation (VSR) is modeled as a function of Secchi disk depth ( Z SD ). This scheme further evaluated using data from numerical simulations and from fi eld
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DOI：
--
发表时间：
1993
期刊：
--
影响因子：
--
作者：
William K. W. Li;S. Maestrini
通讯作者：
William K. W. Li;S. Maestrini
影响因子：
3.6
作者：
MOREL, A
通讯作者：
MOREL, A
影响因子：
2.4
作者：
D. Stramski;L. Legendre
通讯作者：
D. Stramski;L. Legendre
影响因子：
1.9
作者：
Z. Lee;K. Carder;J. Marra;R. Steward;M. Perry
通讯作者：
Z. Lee;K. Carder;J. Marra;R. Steward;M. Perry
影响因子：
7.4
作者：
M. Frederick
通讯作者：
M. Frederick