Sentences with phrase «resulting snowpack»

Sixty percent of annual precipitation falls primarily as snow in the winter and spring months from October to April, and the melting of the resulting snowpack accounts for 80 to 90 % of annual stream flow [29].

-- In Montana, the Continental Divide exerts a marked influence on climate patterns and resulting snowpack:

To determine the avalanche risk, forecasters visually assess these layers to ascertain the stability of the resulting snowpack.

As a result the snowpack has no opportunity to build up, leaving the glaciers bare and exposed to sunlight.

Not exact matches

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.

The year 2015 was the warmest on record for Oregon, resulting in low snowpacks and less water in many lakes and rivers.

The blob - like shape is a result of spending several days in snowpack.

This time, no return to cooler period Tim Barnett, a climatologist at Scripps Institution of Oceanography, said the new results appear to agree with his earlier work that used climate models to show humans» greenhouse gas emissions have contributed to declining snowpack in the western United States.

Pederson says he's confident his tree - ring results are accurate in part because during a brief period of overlap during the 20th century, the snowpack depth derived from the tree rings and modern observations look like «photocopies» of one another.

For example, below - average winter precipitation can lead to smaller mountain snowpack volumes, which tend to result in shorter duration spring runoff (Hamlet and Lettenmaier 1999; Stewart et al. 2004; Moore et al. 2007; Whitfield 2013).

Most studies agree that general declines in snowpack across the West have resulted from warming spring temperatures (Mote 2003; Hamlet et al. 2005; Mote et al. 2005; Abatzoglou 2011; Kapnick and Hall 2012; Pederson et al. 2013a; Lute et al. 2015); however, declines in winter precipitation may also be important (Clow 2010).

Snowpack accumulated at high elevations tends to be more stable and persist longer than at low elevations, largely as a result of colder temperatures at high elevations.

In contrast, La Niña episodes typically result in below - average temperatures, above - average precipitation, and above - average snowpack.

Negative: Lower and shorter duration snowpack and shift from snow to rain - dominant precipitation regimes resulting in less water available in summer

Rising temperatures will reduce snowpack, shift historical patterns of streamflow in Montana, and likely result in additional stress on Montana's water supply, particularly during summer and early fall.

For Immediate Release: October 21st, 2016 Northwest off to a snowy start for the upcoming ski season According to the Open Snow website «Multiple storms hit the west coast and Pacific Northwest during the first half of October, which has resulted in a healthy snowpack for this time of the year».

According to the Open Snow website «Multiple storms hit the west coast and Pacific Northwest during the first half of October, which has resulted in a healthy snowpack for this time of the year».

Results show that anthropogenic warming reduced average snowpack levels by 25 %, with middle - to - low elevations experiencing reductions between 26 and 43 %

A succession of high - snowpack years or operational decisions to transfer water storage from Lake Powell to Lake Mead could also result in large releases of clear water that typically cause sandbar erosion; indeed, such releases occurred from 1996 to 2000 [Mueller et al., 2014] and in 2011.

The 2015 drought conditions and lack of snowpack led to a historically severe wildfire season with more than 1.6 million acres burned across Oregon and Washington, resulting in more than $ 560 million in fire suppression costs.

Snowfall varies across the region, comprising less than 10 % of total precipitation in the south, to more than half in the north, with as much as two inches of water available in the snowpack at the beginning of spring melt in the northern reaches of the river basins.81 When this amount of snowmelt is combined with heavy rainfall, the resulting flooding can be widespread and catastrophic (see «Cedar Rapids: A Tale of Vulnerability and Response»).82 Historical observations indicate declines in the frequency of high magnitude snowfall years over much of the Midwest, 83 but an increase in lake effect snowfall.61 These divergent trends and their inverse relationships with air temperatures make overall projections of regional impacts of the associated snowmelt extremely difficult.

The lack of snowpack in 2014 is all about ENSO and resulting jet stream patterns, something well known for years.»

Climate disruption is resulting in diminishing winter snowpacks and rapid spring runoff, thereby depriving farmers of this valuable asset, and for much of the world, there are no known substitutes.

So far, though, only minor flooding has resulted from snowpack melting in recent days.

This snowpack accumulation near the poles, which gets its water via the Arctic and Antarctic oceans, that in turn rob it from equatorial latitudes of our oceans, also results in a reduction in the earth's spin axis moment of inertia and causes the spin rate to increase as evidenced in the recent history of the rate at which Leap Seconds are added to our calendar (see Wysmuller's Toucan Equation for more on this evidence that during this warm time with much greater polar humidity, earlier seasonal, later seasonal and heavier snows are beginning to move water vapor from the oceans to the poles to re-build the polar ice caps and lead us into a global cooling, while man - made CO2 continues to increase http://www.colderside.com/faq.htm).

Four dry summers and four winters with a dramatically reduced snowpack have taken a toll throughout the Golden State, and will likely kill 58 million trees due to severe water loss, said Greg Asner, a Carnegie Institution biologist who published his results online on December 28 in Proceedings of the Natural Academy of Sciences.

«Over the past millennium, late 20th century snowpack reductions are almost unprecedented in magnitude across the northern Rocky Mountains and in their north - south synchrony across the cordillera... the snowpack declines and their synchrony result from unparalleled springtime warming that is due to positive reinforcement of the anthropogenic warming by decadal variability.

Because of this feedback loop, in a snowpack that has partially melted, it is not possible to distinguish whether elevated impurity concentrations caused enhanced melting or resulted from enhanced melting (or both).

• Record - breaking rainfall in the Ohio valley in the spring and summer, combined with melting snowpack, resulted in historical flooding along the Mississippi River and its tributaries.