A new study reveales that the record
low snowpack levels in the western-most region of the continental U.S. last 2015 were most likely caused by high temperature.
A total of 454 sites in the western United States (or 81 percent of the total sites) recorded record -
low snowpack levels that year;
With
lower snowpack levels across Oregon, especially in Central and Western Oregon, the impact goes beyond cancelled snowshoe trips and closed ski areas.
Not exact matches
The state's
snowpack reserves, which typically supply California's farmers and residents with roughly a third of their water, lingered at their
lowest level in history in 2015.
In April, the governor issued the first mandatory statewide water use restrictions in California history, after
snowpack in the Sierra Nevada Mountains — which provide 60 percent of the state's water — fell to the
lowest levels ever recorded.
Mote said
snowpack levels in most of the western U.S. for 2017 - 18 thus far are
lower than average — a function of continued warming temperatures and the presence of a La Niña event, which typically results in warmer and drier conditions in most southwestern states.
But after dry winters with
low snowpack, lake
levels drop and toad eggs can find themselves in as little as 10 cm of water.
The terrible
snowpack and
low reservoir
levels prompted Gov. Jerry Brown in April to call for the first statewide mandatory water restrictions for cities and towns.
While the western
snowpack levels have improved over last year's dismally
low levels overall, there are still places below average in Colorado, Montana, and New Mexico.
Results show that anthropogenic warming reduced average
snowpack levels by 25 %, with middle - to -
low elevations experiencing reductions between 26 and 43 %
And 2015 won't see much relief: The
snowpack is trending at record
low levels because of high temperatures and
low snowfall.
In 2015, long - term hot and dry conditions in California and Nevada brought
snowpack to historically
low levels.
Snowpack levels stood at or near record
lows during the winters of 2013, 2014 and 2015.
Records show higher temperatures,
lower snowpack, drier forests, and rising sea
levels.