This sounds like that futurama episode where they drop a giant ice cube into the sea whenever it gets too hot.<p><a href="https://www.outerplaces.com/science/item/13083-how-big-would-a-futurama-ice-cube-need-to-be-to-combat-climate-change-hint-really-big" rel="nofollow">https://www.outerplaces.com/science/item/13083-how-big-would...</a>
Why are they so worried about the Arctic melting? Are they hiding something? <a href="http://www.theonion.com/article/melting-ice-caps-expose-hundreds-of-secret-arctic--2806" rel="nofollow">http://www.theonion.com/article/melting-ice-caps-expose-hund...</a>
How about deploying a cluster of "umbrella" satellites to throw some shade on regions of the planet that get too hot? 15 years of having less solar illumination, not complete darkness just a penumbra, could maybe do a lot.<p>How big of a shadow would we need?<p>Edit - someone already thought about it; <a href="http://www.bbc.com/future/story/20160425-how-a-giant-space-umbrella-could-stop-global-warming" rel="nofollow">http://www.bbc.com/future/story/20160425-how-a-giant-space-u...</a>
Or perhaps drifting platforms that stay adrift at the edge and blow water onto the ice? That way it's even possible to measure the edges.. This way it would even help to stop pieces from breaking at the edge (and thus floating away to warmer climates.)