Age: The World Meteorological Organisation says it`s time to shift climate baselines because global warming is increasingly setting a new "normal" for weather conditions.
The widely used 1961-90 baseline should be retained as a "stable reference" for climate study but a more current data set -- updated every decade -- should be adopted to gauge changes in heatwave and rainstorm frequency already under way, the WMO said.
"Rising atmospheric concentrations of greenhouse gases are changing the Earth`s...