- We do control clouds and cloud cover albedo [1].
- Human-induced changes to composition of earth's athmosphere result in about 3 Watts of additional heating per square meter of earth's surface [2]. That's almost 1% of the normal solar heating, or > 2K of (eventual) equalibrium temperature increase, so maybe we should call that "climate control" after all?
[1] https://www.faa.gov/about/office_org/headquarters_offices/ap...
Clouds are the result of the condensation of water on particulates in the atmosphere. Over 65% of Earth's surface area is liquid water. Oceans have deep currents that fluctuate in cycles and influence climate dramatically and have done so for billions of years and before humans even existed.
https://earthobservatory.nasa.gov/images/85843/cloudy-earth
This article by NASA covers that story well. "One study based on nearly a decade of satellite data estimated that about 67 percent of Earth’s surface is typically covered by clouds. This is especially the case over the oceans, where other research shows less than 10 percent of the sky is completely clear of clouds at any one time. Over land, 30 percent of skies are completely cloud free."
Cirrus clouds from airplanes could slightly influence local conditions, but would not even come close to having a global effect. The magnitude of change is not significant when compared to the ocean cloud cover.
At any rate, even something like cosmic ray flux can induce increase in cloud cover albedo as noted by Svensmark: http://apreat.ovh/henrik-svensmark-force-majeure-the-suns-ro...
From above "(the net effect of clouds is to cool the Earth by about 20–30 W/m2)" That is, clouds have an order of magnitude higher effect than trace greenhouse gases. That means even a 10% change in average cloud cover would more than exceed (on the downside) any radiative forcing caused by greenhouse gases. And this makes sense when you think about it. Clouds are capable of almost completely reflecting solar energy back into space.
This is where volcanism comes into play. When stratospheric injection of sulfates occurs from large volcanic explosions, an increase in cloud cover happens and a subsequent decrease in global temperatures occurs. This process we do not control, and volcanoes are perfectly capable of inducing ice ages on their own and we are powerless to stop that:
https://en.wikipedia.org/wiki/Year_Without_a_Summer
At any rate, NASA has admitted as much that our understanding and modeling of clouds and their effect on climate is extremely poor and that current climate models do not accurately account for their influence. Here's a great interview from JPL on that: https://www.youtube.com/watch?v=ra9AFNco3lI