资源环境科技发展态势分析平台

Relationship among different quantities usually changes in the time, spatial, and spectral domains due to the complicated dynamics in the geosystem. In this study, we propose a general statistical modeling approach to address this problem and apply the approach to evaluating the continuous dependence of relationship between sea surface temperature (SST) and turbulent heat flux (T-Q relationship) on spatial scales. In the Kuroshio extension region, it is found that the turbulent heat flux (defined positive upward) anomalies are positively correlated to SST anomalies at scales ranging from similar to 150 km to similar to 4000 km. The T-Q relationship stays stable at mesoscales (<1000 km) with a regression coefficient alpha of 26W/(m(2)K). However, its value decreases rapidly as scales further increase. In addition, alpha exhibits a pronounced seasonal cycle with coherent phase at all the scales. The largest and smallest values occur in winter and summer, respectively.