The phrase "warm interglacials" refers to periods of time in Earth's history when the climate was relatively warm and stable between ice ages. Full definition
Many of the glaciers that jut out into the ocean are thinning, but whether the ice sheet itself has remained stable and intact, even during warm interglacial periods, is a matter of considerable debate. (sciencemag.org)
a) a glacial cycle over 100,000 years with warm interglacial periods in red and the long glacial period in between. (co2coalition.org)
They have further discovered that there is a difference in the fractal behaviour in the ice age climate and in the current warm interglacial climate. (sciencedaily.com)