If conditions are warmer now, are trees growing faster?

Actually, trees grew faster (red) in the 1940s - 1950s than they do now. This may be due to cooler summer temperatures (0.5°C) in the last few decades	Average ring-widths in tree-ring chronologies (hundreds of trees) from the mountains of western Canada. Source: Luckman, B., Dept. of Geography, University of Western Ontario
Is the Forest Different on the North and South Facing Slopes?	Buried Forests