Abnormal Phenomena in the Tropical Part of the World Ocean According to MODIS-Aqua Satellite Data

• Main Authors: Vysotskaya, Galina S., Pisman, Tamara I., Botvich, Irina Yu., Shevyrnogov, Anatoliy P., Высоцкая, Г. С., Письман, Т. И., Ботвич, И. Ю., Шевырногов, А. П.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Siberian Federal University. Сибирский федеральный университет 2024
• Subjects: World Ocean; satellite data; MODIS-Aqua; tropics; ocean surface temperature; OST trends; Мировой океан; спутниковые данные; тропики; температура поверхности океана; тренды OST; north atlantic current; North Atlantic
• Online Access: https://elib.sfu-kras.ru/handle/2311/152880

The work analyzes monthly data from the MODIS-Aqua satellite scanner on the temperature of the surface layer of water with a resolution of 4320×2160 (9 km at the equator) for 2002–2021, obtained from the Ocean Color Data website (https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/Mapped/Monthly/9km/). It was shown that the degree of influence of changes in ocean surface temperature on the atmosphere depends not only on the absolute values of temperature changes, but also on the surface area on which these changes occur. It was revealed that starting from the end of 2009 – beginning of 2010, the climate system of the tropical zone was destabilized, and reliably positive temperature trends began to prevail over most of the ocean surface in the tropics. At the same time, in the circulation belts of temperate latitudes, processes occur that are not synchronous either with the processes in the tropics or with each other. It was noted that zones with predominant warming or cooling are sometimes located nearby on the scale of the World Ocean, practically not separated by buffer zones. This could destabilize the ocean-atmosphere system. It was revealed that the predominance of warming processes in the Gulf Stream does not lead to a corresponding predominance of warming processes in the North Atlantic Current. The opposite is observed В работе анализируются ежемесячные данные спутникового сканера MODIS-Aqua о температуре поверхностного слоя воды с разрешением 4320×2160 (9 км по экватору) за 2002–2021 годы, полученные с сайта Ocean Color Data (https: //oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/Mapped/Monthly/9km/). Показано, что степень влияния изменения температуры поверхности океана на атмосферу зависит не только от абсолютных величин изменений температуры, но и от площади поверхности, на которой происходят эти изменения. Выявлено, что с конца 2009 – начала 2010 г. климатическая система тропической зоны дестабилизировалась, и над большей частью поверхности океана в тропиках стали преобладать достоверно положительные тренды ...