Copyrighted Image? DMCA | As oceans warm, they expand; up to half of sea-level rise comes not from melting glaciers or disappearing ice caps, but from the physical expansion of seawater as it heats up. Oceans are currently doing the heavy lifting in absorbing trapped heat. Ultimately, some of that heat will be transferred back to the air, continuing to warm the places we live even if we manage to stop generating greenhouse gases at such a great rate. |