Sentences with phrase «snowpack trend»

There was a whole business of exaggerating the disappearing snowpack trend, linking that with global warming.

California had the highest number of positive snowpack trends since 1955, but lingering drought during the past decade erased most of those gains and snowpack declines still dominated;

The assessments in this chapter are based on the climate trends for which we had sufficient data and climate projections that represent plausible future scenarios, as described in the Climate chapter of this assessment (see Water chapter for snowpack trends and projections) and summarized in Table 4 - 1.

The simulations underestimate the observed snowpack trends in the Columbia River basin, which has the highest mean elevation.

Not exact matches

Although the new study describes ongoing decline in snowpack throughout the Rockies, this year has bucked that long - term trend.

First, because Albright illustrates the supposed lack of a trend by comparing specific periods (e.g. 1940 - 1949 vs. 1997 - 2006), in which snowpack has increased in some locations.

Are there estimates of snowpack * variability * in addition to the trend, for the Cascades or parts of the Cascades?

Given that the long - term trend in early spring snowpack is down, Climate Central recently examined how the type of precipitation is changing during the winter months nationwide.

One of the biggest drivers in this trend is disappearing spring snowpack, which is tied to a mix of rising temperatures and more rain melting it earlier than usual.

The observed melting is greatest at lower elevations, a trend matched in snowpack declines across the Western U.S.

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.

Studies have found that warmer temperatures in recent decades help explain a downward trend in snowpack in the western United States, even after patterns of natural climate variability have been considered [9], [56].

And 2015 won't see much relief: The snowpack is trending at record low levels because of high temperatures and low snowfall.

A flurry of recent research strongly suggests that recent observations like these are indeed linked to California's long - term warming trend — and that snowpack losses are expected to accelerate further over the next few decades.

In this episode of Deeply Talks, Ian Evans, Water Deeply's community editor, speaks with Tara Lohan, Water Deeply's managing editor and John Fleck, director of water resources at the University of New Mexico, about the status of this year's snowpack, what it can tell us about the water year to come and how that fits with long - term climate change trends.

Climatologies of Rocky Mountain snowpack are shown to be seasonally and regionally complex, with Pacific decadal variability positively reinforcing the anthropogenic warming trend.

The increasing role of warming on large - scale snowpack variability and trends foreshadows fundamental impacts on streamflow and water supplies across the western United States.