This is the 3397th most frequent Russian word.
потепление
Warming.
In this case, 'потепление' refers to the phenomenon of warming, specifically in the context of climate change.
Эти исследования подтверждают, что потепление климата серьёзно влияет на экологию.
These studies confirm that climate warming seriously affects the ecology.
Here, 'потепление' is used to describe the general rise in temperature associated with the spring season.
Весной потепление сделало воздух приятным и свежим.
In spring, the warming made the air pleasant and fresh.
In this sentence, 'потепление' is metaphorically used to depict improved interactions or a friendlier atmosphere in international relations.