system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why do countries like Russia have harsher winters than other countries which are on the same latitude?
gpt
Because Russia has huge landmass with very little ocean contact.  Conversely, the southern hemisphere has a lot of ocean area with relatively little land.  The ocean and its currents hold and move a lot of heat around the globe. Without proximity to the heat held in the ocean during the winter, Russia cools more drastically.  On the other side, the southern hemisphere experiences smaller temperature swings with the seasons.