The original paper presumably does not have such errors; these most likely come from the journalist trying to be helpful and translate celsius into fahrenheit. An increase of 16 degrees C is of course 28.8 degrees fahrenheit.
It’s kind of dismaying, it’s no wonder that the public is confused about climate change when even educated people make silly math errors- imagine how much less educated the average person is than that? Education in the sciences is what I would normally recommend but it’s a bit late in the game for that with regard to climate policy.
