I don't claim to be an expert on climate science, but I've listened to Dr. Steve MacLean, who is the president of the Canadian Space Agency. He says it's very important to have accurate weather models for climate change to understand what's going on. The dilemma is that those models are incomplete today.
One of those models, for example, assumes that the sun is a constant, which it clearly isn't. There are mechanisms to use space exploration to look at the sun, see what's happening with sunspots and radiation, and see what impact they may have on climate change.
Steve talked about the importance of identifying those things that need to be measured and finding more effective ways to do that. Satellites happen to be very good at some of those things, not just because you can look at space and the atmosphere, but because you can actually look at Earth in a very consistent manner, gather information from all of Earth, and bring it back to a central location consistently year after year.
I'm not a scientist who's sufficiently knowledgeable about which bits of information you want to gather, but the notion that spacecraft gather the information very consistently, reliably, and repeatedly, and put that into climate change models to enable us to make the right decisions is a very important one.