Energy balance model for imagery and electromagnetic propagation
Energy balance model for imagery and electromagnetic propagation
复制标题
图像和电磁传播的能量平衡模型
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
A. Tunick
中科院分区：
文献类型：
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作者：
H. Rachele;A. Tunick
光学湍流结构参数 Cn2 通常出现在用于估计温度和湿度（梯度）对图像和电磁传播的影响的公式中。温度和湿度梯度可以通过感热和潜热通量估计来近似，并且这些通量可以通过辐射/能量平衡方程获得。存在许多需要不同种类和数量的输入的能量平衡模型。本文开发和提出的半经验模型仅限于在参考水位 (2 m) 处需要最少数量的常规测量。这些测量包括温度、压力、相对湿度和风速。该模型还需要判断土壤类型和湿度（干燥、潮湿或饱和）、云特征（云量和密度的十分之一以及云高度的估计）、一年中的某一天、一天中的时间以及感兴趣地点的经度和纬度。将模型估计的净辐射、感热和潜热通量以及 Cn2 与测量值进行比较。
The optical turbulence structure parameter Cn2 typically appears in formulations used to estimate the effects of temperature and moisture (gradients) on imagery and electro- magnetic propagation. Temperature and moisture gradients can be approximated from sensible and latent heat flux estimates, and these fluxes can be obtained from radiation/energy balance equations. Numerous energy balance models exist requiring different kinds and numbers of inputs. The semiempirical model developed and presented in this paper was constrained to require a minimum number of conventional measurements at a reference level (2 m). These measurements include temperature, pressure, relative humidity, and windspeed. The model also requires a judgment of soil type and moisture (dry, moist, or saturated), cloud characteristics (tenths of cloud cover and density and an estimation of cloud height), day of the year, time of day, and longitude and latitude of the site of interest. Model estimates of net radiation, sensible and latent heat fluxes, and Cn2 are compared with measured values.