That is the sudden warming and large increase in carbon dioxide content in the atmosphere at the end of the two most recent ice ages.

It symbolized the sudden warming in ties between the two countries.

They also found that the impact of the sudden warming had been felt at least throughout the Northern Hemisphere.

Ish felt a sudden warming of his heart toward the youngest son.

Another is a sudden warming of the North Pacific climate that began in the late 1970's.

BBC Weather: What is sudden stratospheric warming?

UK Met Office: What is a sudden stratospheric warming (SSW)?

In northern hemispheric winter, sudden stratospheric warmings, caused by the absorption of Rossby waves in the stratosphere, can often be observed.

During the winter and spring months in the city appears warm and gusty wind "foehn", which causes sudden warming of time.

Clan explained Zach Freiberg's hypothesis about the sudden warming of the Earth.