Linear Trends of Temperature at Intermediate and Deep Layers of the North Atlantic and the North Pacific Oceans: 1957–1981

John I. Antonov Stage Hydrological institute, St. Petersburg, Russia

Search for other papers by John I. Antonov in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

Using all available hydrographic station data on ocean temperature observations from World Data Center-B (Obninsk, Russia), investigation of temperature changes in the North Atlantic and North Pacific oceans within the depth range of 300 to 3000 m has been carried out for the period 1957–1981.

Results of statistical data analysis show that in the upper layer to about 500-m depths of both oceans, on average, seawater temperature declined. Deeper than 500–600 m in the North Pacific Ocean, no significant temperature changes have been revealed for this 25-year time interval. On average, for the North Atlantic Ocean, a statistically significant temperature rise (about 0.1°C 25 yr−1) is observed in the 800- to 2500-m layer.

Abstract

Using all available hydrographic station data on ocean temperature observations from World Data Center-B (Obninsk, Russia), investigation of temperature changes in the North Atlantic and North Pacific oceans within the depth range of 300 to 3000 m has been carried out for the period 1957–1981.

Results of statistical data analysis show that in the upper layer to about 500-m depths of both oceans, on average, seawater temperature declined. Deeper than 500–600 m in the North Pacific Ocean, no significant temperature changes have been revealed for this 25-year time interval. On average, for the North Atlantic Ocean, a statistically significant temperature rise (about 0.1°C 25 yr−1) is observed in the 800- to 2500-m layer.

Save