当前位置: X-MOL 学术Izv. Atmos. Ocean. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Local Katabatic Winds of the Russian Federation and Their Observation Using Synthetic Aperture Radar Imagery
Izvestiya, Atmospheric and Oceanic Physics ( IF 0.7 ) Pub Date : 2021-02-25 , DOI: 10.1134/s0001433820090121
A. Yu. Ivanov

Abstract

Data from synthetic aperture radars (SAR) provide new opportunities for observing and studying local katabatic winds (bora and foehn) over the seas in different regions of the Russian Federation and adjacent marine basins. The impact of these winds on the characteristics of small-scale wind waves leads to the formation of characteristic manifestations on the sea surface, which in turn can be seen in SAR images. Satellite SAR data, unlike subsatellite observations, make it possible to see the phenomena in coastal zones and large lakes, estimate their spatial scales, and determine a number of quantitative characteristics. The analysis of the collected SAR images shows that bora-like and foehn-like local winds have similar characteristics and cover vast areas of the inland and marginal seas of the Russian Federation. The similarity of the manifestations of local winds clearly indicates the same physical and aerohydrodynamic mechanisms of their onset and display on SAR images. It is shown that spaceborne SAR data, which are 2D patterns of the ‘frozen wind’, are extremely useful for studying and monitoring local winds over the seas, especially where the network of weather stations is extremely sparse.



中文翻译:

俄罗斯联邦的局部白色风及其使用合成孔径雷达图像的观测

摘要

合成孔径雷达(SAR)的数据为观察和研究俄罗斯联邦不同地区和邻近海盆海域的热带风(波塔和福恩)提供了新的机会。这些风对小规模风波特征的影响导致在海面上形成特征表现,这又可以在SAR图像中看到。与亚卫星观测不同,卫星SAR数据使人们可以看到沿海地区和大型湖泊中的现象,估计其空间规模,并确定许多定量特征。对所收集的SAR图像的分析表明,类似波拉风和类似福恩风的局部风具有相似的特征,并覆盖了俄罗斯联邦内陆和边缘海的广大地区。局部风的表现的相似性清楚地表明了它们在SAR图像上出现和显示的相同的物理和空气动力原理。结果表明,作为“冻风”的2D模式的星载SAR数据对于研究和监视海上局部风非常有用,尤其是在气象站网络极为稀疏的地方。

更新日期:2021-02-25
down
wechat
bug