Diurnal temperature range as an index of global climate change during the twentieth century

  title={Diurnal temperature range as an index of global climate change during the twentieth century},
  author={Karl Braganza and David J. Karoly and Julie M. Arblaster},
  journal={Geophysical Research Letters},
The usefulness of global‐average diurnal temperature range (DTR) as an index of climate change and variability is evaluated using observations and climate model simulations representing unforced climate variability and anthropogenic climate change. On decadal timescales, modelled and observed intrinsic variability of DTR compare well and are independent of variations in global mean temperature. Observed reductions in DTR over the last century are large and unlikely to be due to natural… 
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