California’s Drought Is Officially The Worst the State Has Seen in 500 Years

After four years of drouth , California ’s snowpack level have already beendeclared the lowestsince record begin about a hundred ago . Now with raw information harvest from tree - ring data , scientists think that California ’s snowpack is the grim it ’s been in over 500 years — and possibly even 1000 .

Scientists used a young direction to measure centuries - onetime snowpack for the work , which was authored by University of Arizona paleoclimatologists and published in today’sNature Climate Change . The tree - gang width of 1,500 juicy oak found throughout the Central Valley of the state cave in the scientist reliable growth data for about 500 years . When they compare those measurements to tree - ring information since Sierra Nevada snowpack begin being instrumentally recorded in the 1930s , the scientists realise that the oaks ’ growth accurately recorded the very lowest snowpack season . Although it was clear that 2015 had the blue snowpack levels in 500 age , it ’s more likely that it ’s the lowest in 1000 years , but these trees just are n’t sometime enough to show it .

In astory in the New York Times , A. Park Williams , a bioclimatologist at Columbia University commented on the study and added his voice to the originate chorus thatclimate variety has made the drought even worseand remark that low snowpack will be the norm , not the exception :

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“ We are now transmigrate into this new world where temperature are higher , ” Dr. Williams say . “ So even though the probability of an outcome like this were extremely improbable in the past , in the future it will be more probable to occur . ”

Here is the graph from the subject which shows the snowpack degree that have been instrumentally recorded from the 1930s to today , followed by the estimates from the past 500 class or so . The red lines are where the pawn - recorded information correlates with the tree - band estimation . Besides a few possible dip below 2015 level in the sixteenth C , this is well the low-down snowpack measurement scientists have ever seen :

This report come on the heels of another report card from NOAA that the last few year have bring the gamy ordinary temperature in California ’s recorded story . Just for playfulness , permit ’s check out the graph which shows temperatures since record began being kept in 1895 :

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