There are really a couple of separate issues here. First, it is important to distinguish between the general scientific agreement about past climate changes and the greater confusion about the probability of future climate changes. One of the main reasons why there is such broad agreement among the community is that scientists have tended to focus on the answerable questions such as "has the earth been getting warmer over the last X years" rather than the thornier question of "what caused the earth to get warmer" and "will the earth continue to get warmer." Very few scientific papers have been written that make predictions on the question of future climate.

It is also important to remember that while there is generally scientific consensus that global warming is "probably" happening (whatever that means!) or that it is "probably" caused by humans, there is a great deal of uncertaintly about exactly what the probabilities are. If you could get all scientists to agree that there was about a 71% chance that the next century would be warmer, does that count as "scientific consensus that climate change is likely"?