Simulation of the influence of the ocean and the El-Niño – Southern Oscillation phenomenon on the structure and composition of the atmosphere

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Jakovlev, A R, Smyshlyaev, S P
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2019
• Subjects: Arctic
• Online Access: http://dx.doi.org/10.1088/1755-1315/386/1/012021; https://iopscience.iop.org/article/10.1088/1755-1315/386/1/012021/pdf; https://iopscience.iop.org/article/10.1088/1755-1315/386/1/012021

Abstract The influence of El-Niño and La-Niña on the Arctic stratosphere is studied. Sea surface temperature (SST), potential vorticity, air temperature, ozone mixing ratio, and column ozone ERA Interim data are analyzed for 1997, 1999, and 2016. It is shown that El-Niño leads to a series of sudden stratospheric warmings and, consequently, to instability of the polar vortex and to an increase in column ozone, whereas La-Niña leads to a stable polar vortex and low temperatures in the stratosphere and, therefore, to a decrease in column ozone. The influence of SST and CO 2 levels on the air temperature in the troposphere and stratosphere, and ozone content from 1980 to 2015 is also studied. It is shown that there is warming of the ocean and the troposphere, as well as cooling of the stratosphere. It is also shown that the changes in air temperature in the troposphere are mainly due to changes in SST, whereas for the stratosphere the impact of CO2 variability prevails. It is also shown that ozone content varies little.