Detecting climate rationality and homogeneities of sea surface temperature data in Longkou marine station using surface air temperature

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Li, Yan^1 ; Li, Huan^1 ; Wang, Qingyuan^2 ; Wang, Guosong^1 ; Fan, Wenjing^1

National Marine Data and Information Service, Tianjin, China^1

Tianjin Meteorological Observatory, Tianjin, China^2

关键词: Adjacent surfaces;    Atmospheric circulation patterns;    Inhomogeneities;    Meteorological station;    Observation systems;    Sea surface temperature (SST);    Surface air temperatures;    Systematic evaluation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012165/pdf
DOI  :  10.1088/1755-1315/81/1/012165

来源: IOP

【 摘 要 】

This study presents a systematic evaluation of the climate rationality and homogeneity of monthly sea surface temperature (SST) in Longkou marine station from 1960 to 2011. The reference series are developed using adjacent surface air temperature (SAT) on a monthly timescale. The results suggest SAT as a viable option for use in evaluating climate rationality and homogeneity in the SST data on the coastal China Seas. According to the large-scale atmospheric circulation patterns and SAT of the adjacent meteorological stations, we confirm that there is no climate shift in 1972/1973 and then the climate shift in 1972/1973 is corrected. Besides, the SST time series has serious problems of inhomogeneity. Three documented break points have been checked using penalized maximum T (PMT) test and metadata. The changes in observation instruments and observation system are the main causes of the break points. For the monthly SST time series, the negative adjustments may be greatly due to the SST decreasing after automation. It is found that the increasing trend of annual mean SST after adjustment is higher than before, about 0.24 °C/10 yr.