Manifestation of Upwellings in the Black Sea in Multisensor Remote Sensing Data

IF 0.9 4区地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES Izvestiya Atmospheric and Oceanic Physics Pub Date : 2024-02-20 DOI:10.1134/s0001433823120137

D. V. Khlebnikov, A. Yu. Ivanov, M. A. Evdoshenko, S. K. Klimenko

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Abstract

Results of upwelling research in the Black Sea, namely in the northeastern part of the sea, near the Tendrovskaya Spit and western coast of Crimea, and off the coast of Turkey, are presented. The results are based on the use of Earth remote sensing data, in particular the data from color scanners (MODIS, VIIRS, OLCI-A, and OLCI-B), infrared radiometers (TIRS and AVHRR), and SAR images from synthetic aperture radars. An integrated approach using almost exclusively remote sensing data makes it possible to fully characterize the observed upwellings in the Black Sea. In the active phase, upwelling, in addition to sea surface temperature (SST), is usually reflected in both the chlorophyll a (Chl a) concentration field and sea surface roughness field. In our cases, the duration of upwellings varied from 6 to 10 days; the SST differences in the upwelling zone reached 3–8°C; and Chl a concentrations were 5–6 times higher than the background values, being 0.5–0.7 mg/m³. The maximum SST anomalies up to 8°C were observed off the Turkish coast. The analysis revealed a clear relationship between areas of reduced SST in the upwelling zone, sea surface roughness, and Chl a concentration. It is shown that, in the case of using a complete set of remote sensing data, observing, monitoring, and studying upwelling does not present any fundamental difficulties.

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多传感器遥感数据中的黑海隆起现象

摘要介绍了黑海上升流研究的结果，即黑海东北部、Tendrovskaya Spit 和克里米亚西海岸附近以及土耳其沿海的上升流研究结果。研究结果基于对地球遥感数据的使用，特别是来自彩色扫描仪（MODIS、VIIRS、OLCI-A 和 OLCI-B）、红外辐射计（TIRS 和 AVHRR）以及合成孔径雷达的合成孔径雷达图像的数据。几乎完全使用遥感数据的综合方法使得全面描述黑海观测到的上升流成为可能。在活动阶段，除了海面温度（SST）外，上升流通常还反映在叶绿素 a（Chl a）浓度场和海面粗糙度场中。在我们的案例中，上升流持续时间从 6 天到 10 天不等；上升流区的海面温度差达到 3-8°C ；叶绿素 a 浓度比背景值高 5-6 倍，为 0.5-0.7 mg/m3。在土耳其沿岸观测到的最大海温异常可达 8°C。分析表明，上升流区海温降低的区域、海面粗糙度和 Chl a 浓度之间存在明显的关系。这表明，在使用全套遥感数据的情况下，观测、监测和研究上升流并不存在任何根本性的困难。

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来源期刊

Izvestiya Atmospheric and Oceanic Physics 地学-海洋学

CiteScore

1.40

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Izvestiya, Atmospheric and Oceanic Physics is a journal that publishes original scientific research and review articles on vital issues in the physics of the Earth’s atmosphere and hydrosphere and climate theory. The journal presents results of recent studies of physical processes in the atmosphere and ocean that control climate, weather, and their changes. These studies have possible practical applications. The journal also gives room to the discussion of results obtained in theoretical and experimental studies in various fields of oceanic and atmospheric physics, such as the dynamics of gas and water media, interaction of the atmosphere with the ocean and land surfaces, turbulence theory, heat balance and radiation processes, remote sensing and optics of both media, natural and man-induced climate changes, and the state of the atmosphere and ocean. The journal publishes papers on research techniques used in both media, current scientific information on domestic and foreign events in the physics of the atmosphere and ocean.