Author(s)

Shiyin Qiu, Zirui Yang, Yimin Hua, Yuxuan Jin

Corresponding Author

Shiyin Qiu

ABSTRACT

With the global warming, the sea surface temperature (SST) is rising, resulting in many adverse consequences. In this regard, we have done the following research: according to the relationship between SST and near earth temperature, the whole temperature change in the next 50 years is divided into three processes. 1. The difference of geometric position. The spatial discrete SST is obtained by multiple quadric surface interpolation fitting, and a geometric continuous function describing the temperature change is obtained. 2. The future SST is predicted by regression analysis, and the overall temperature increases with the increase of the year; 3. The annual cycle fluctuation with the seasonal rhythm. The influence of annual wave and half year wave on the annual temperature change is fitted by harmonic analysis. Finally, the regional changes of fish distribution and the sea surface temperature of the surrounding areas of Scotland in the next 50 years are predicted. The migration of two kinds of fish in Scottish waters was analyzed, and the catch of small trawlers joined by small Scottish fishing companies was compared. The survival status of fish can be divided into three levels: the most serious, medium and only for survival. Finally, based on the existing model, the existing material level and trade mode, some strategic suggestions are put forward.

KEYWORDS

SST; change decomposition; multivariate quadric surface (MQS) interpolation; regression analysis; harmonic analysis