Answer:
Availability of the Gulf stream
Step-by-step explanation:
First of all, similar latitudes is not solely responsible for the type of climate a place experiences. Though both Calgary and London are located at the 51 degrees North latitude, their longitude also play vital roles. Calgary is known to have harsher winters and warmer summers compared to London. The major difference here is the availability of water. While London has more waters, it's climate is shaped by the gulf stream helps regulate the ocean temperatures which effectively reduce the severity of the winters and summers. The gulf stream is not available in Calgary hereby making the climate different.