Test of sea surface temperature fusion data and analysis of spatiotemporal variation characteristics in the Bohai Sea
XU Shanshan
ZHANG Zengjian
YANG Yang
LIU Yulong
GENG Shanshan
DING Feng
Abstract：The Optimum Interpolation Sea Surface Temperature data(OISST V2)was tested by using the anchor buoy data in the Bohai Sea area from two aspects of data reproducibility and statistical eigen-value calculation.OISST V2 data has high reliability.The TOISST V2 data was used to study the long-term variation trend of surface sea temperature in the Bohai Sea from 1981 to 2021.The results showed that the whole Bohai Sea area had a warming trend.The annual average variation rate of SST in 41 years was 0.028 ℃/a,the maximum annual average variation rate appeared in the south of the Bohai Bay,and the minimum annual average variation rate appeared in the east of Liaodong Bay.In winter,the average warming trend of the Bohai Sea was 0.005 1 ℃/a.The central part showed a warming trend,while the coastal Bohai Bay,Laizhou Bay and Liaodong Bay showed a cooling trend.In summer;the Bohai Sea had a warming trend,with an average warming rate of 0.011 ℃/a.EOF decomposition of OISST V2 sea surface temperature anomaly data was used to analyze the spatiotemporal characteristics of SST in the Bohai Sea.The main modes of its spatial distribution had overall consistency,and the sig-nificant period of time coefficient was annual period.
Keywords：Bohai Seasea surface temperaturespatiotemporal variation
Publication Date：2025-10-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 113-119 )