Lövin said Sweden wanted to set an example at a time when ''climate sceptics are really gaining power in the world again''.
She further said she feels encouraged by China's and India's pledges taken for Paris Agreement commitments.
Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F). In the Solar System, the atmospheres of Venus, Mars and Titan also contain gases that cause a greenhouse effect.