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https://m.phys.org/news/2017-03-nasa-magnetic-shield-mars-atmosphere.html
In essence, they suggested that by positioning a magnetic dipole shield at the Mars L1 Lagrange Point, an artificial magnetosphere could be formed that would encompass the entire planet, thus shielding it from solar wind and radiation.
[...] In addition, the positioning of this magnetic shield would ensure that the two regions where most of Mars' atmosphere is lost would be shielded
[...] As a result, Mars atmosphere would naturally thicken over time, which lead to many new possibilities for human exploration and colonization. According to Green and his colleagues, these would include an average increase of about 4 °C (~7 °F), which would be enough to melt the carbon dioxide ice in the northern polar ice cap. This would trigger a greenhouse effect, warming the atmosphere further and causing the water ice in the polar caps to melt.
Pretty SF but I enjoyed the article.
(Score: 1) by khallow on Saturday March 18 2017, @01:35PM
I know one thing though, that would be one hell of a case of 'climate change' to touch off and no way I'd want to be on the surface to find out how many unexpected processes would try to kill me. I mean we haven't even walked on the danged planet and we want to introduce that kind of sudden drastic change? While the first people are establishing a foothold. I'd volunteer to do an initial survey mission but get me outta there before the magnet switches on.
Not seeing the problem myself. Just make sure your structures are engineered for the heavier atmosphere and such.