Cheng, L. J., and Coauthors, 2021: Upper ocean temperatures hit record high in 2020.  Adv. Atmos. Sci., 38(4), 523−530,  https://doi.org/10.1007/s00376-021-0447-x.
            
            
                
                    | Citation: | Cheng, L. J., and Coauthors, 2021: Upper ocean temperatures hit record high in 2020.  Adv. Atmos. Sci., 38(4), 523−530,  https://doi.org/10.1007/s00376-021-0447-x. | 
            
         
        
            
                Cheng, L. J., and Coauthors, 2021: Upper ocean temperatures hit record high in 2020.  Adv. Atmos. Sci., 38(4), 523−530,  https://doi.org/10.1007/s00376-021-0447-x.
            
            
                
                    | Citation: | Cheng, L. J., and Coauthors, 2021: Upper ocean temperatures hit record high in 2020.  Adv. Atmos. Sci., 38(4), 523−530,  https://doi.org/10.1007/s00376-021-0447-x. |