_:genid1 "Free to use with credit to the original figure source."^^ . "short-term-variations-versus-long-term-trend" . "34.6"^^ . "Short-term Variations Versus Long-term Trend"^^ . "Short-term trends in global temperature (blue lines show temperature trends at five-year intervals from 1970 to 2010) can range from decreases to sharp increases. The evidence of climate change is based on long-term trends over 20-30 years or more (red line). (Data from NOAA NCDC)."^^ . _:genid1 . . . . . . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .