Sentences with phrase «winter precipitation»

One reason is because an increasing percentage of winter precipitation is falling as rain instead of snow in many locations.

We add to this knowledge by examining how variability in winter precipitation could influence management effectiveness.

This will help to cut down on cold winds sneaking their way into the indoor kennel runs and keep out most of the nasty winter precipitation from the outside runs.

While winter precipitation came in near record levels, snow pack did not.

It is the only humid climate with a strong winter precipitation maximum.

We set runoff increase to zero in years when winter precipitation was less than 230 mm (9 inches).

One reason is that an increasing percentage of winter precipitation is falling as rain instead of snow in many locations.

In the majority of scenarios ran (15 out of 26), winter precipitation from only 5 of the 15 years accounted for at least 75 % of the increased runoff.

The mass balance of glaciers is mainly influenced by winter precipitation and summer temperature.

In our new expanded report, «Meltdown,» we have analyzed the role of elevation in the percentage change of winter precipitation falling as rain.

Using similar values for winter precipitation and basal area reduction, our model simulated the runoff response to vary depending on years since treatment, from a high of 38 mm (1.5 inches) in the year immediately following treatments to a low approaching zero mm after six years (Figure 3c).

Snowfall is projected to continue to decline across the assessment area, with more winter precipitation falling as rain.

Despite a near - average winter precipitation total for California, Oregon, and Washington, the record warmth caused most of the precipitation to fall as rain and not snow, which had implications on the drought intensification and water resource crisis during the warm months.

A difference in mean winter precipitation of only 130 mm (5 inches), from 330 mm (13 inches) in drought scenario to 460 mm (18 inches) in a pluvial scenario, resulted in a doubling of the annual increase in runoff from treatments (Figure 7).

The relationship between winter precipitation in North America and indices of the North Atlantic Oscillation (NAO) and El Niño — Southern Oscillation (ENSO) is evaluated using non-stationary generalized extreme value distributions with the indices as covariates.

A Climate Central analysis of 65 years of winter precipitation data from more than 2,000 weather stations in 42 states, found a decrease in the percent of precipitation falling as snow in winter months for every region of the country.

Less winter precipitation falling as snow is bad news for water supplies and wildfires out West and the financial fate of ski resorts across the country.

The correlation between annual maximum snowpack and total winter precipitation at Diablo Dam is highest for Snotel sites above 1500 m (0.75 - 0.81).

Output from global circulation models indicates that climate variability will continue to be an important characteristic of the region in the future [52], but that climate change may increase the risk of extreme climatic events such as multi-decade droughts and extreme winter precipitation [53], [54].

Bottom panes show corresponding winter precipitation values (Oct - Apr, mm) used as one of the independent variables to calculate runoff.

Depending on winter precipitation and the forest treatment schedule, mean annual increases in runoff from thinning of ponderosa forests across the Salt - Verde watersheds ranged from 4.76 to 15.0 million m3 (3,860 — 12,200 acre - feet) over a 35 - year treatment period, 6.18 to 23.4 million m3 (5,010 to 19,000 acre - feet) over 25 years, and 9.23 to 42.8 million m3 (7,480 to 34,700 acre - feet) over 15 years (Table 2).

Shaded areas are examples of 15 - year droughts and pluvials that were used in study scenarios; horizontal red lines represent mean winter precipitation within these shaded areas.

We calculated mean winter precipitation across 15 -, 25 -, and 35 - year periods from this modeled data and used this information to select droughts and pluvials.

To see how winter precipitation is changing, we looked at states that all see notable amounts of snow (sorry, Florida).

The main climate ingredient for wildfire activity in Northwest grasslands is ample winter precipitation, while the main climate ingredient in forest fires is a hot, dry summer.

Results from 26 scenarios with varying levels of winter precipitation showing increases in mean annual runoff associated with mechanical thinning of ponderosa pine forests in the first analysis area of the 4FRI project.

We found a strong association between modeled and observed data (Rho = 0.9577, p < 0.001) although the model underestimated measured winter precipitation over the time period by approximately 25 mm (1 inch) and consistently under - estimated precipitation in wet winters (Figure 4 inset).

To test the accuracy of these modeled data, we compared values from the Verde ponderosa pine PRISM modeled data to measurements of total winter precipitation recorded during the original Beaver Creek experiments [31].

I suspect detection of TC events by oxygen - 18 ratios is complicated by the fact that oxygen - 18 ratios are also affected by summer to winter precipitation ratios, although the very different timescales make it possible to disentangle such issues.

Years with high winter precipitation played a disproportionate role in additional runoff in both droughts and pluvials.

Mean winter precipitation is increasing in most of Atlantic and northern Europe (Klein Tank et al., 2002).

«This ongoing research is going to tell us what winter precipitation trends might be and, most importantly, how that will be reflected in glacier mass balance, which is the absolute signature criteria for water security in the future,» said Robert Sandford, Canada's representative for the United Nations Water for Life initiative.

Not only is the MJO the primary source of tropical variability on monthly timescales, it also affects weather outside the tropics, including winter precipitation in North America.

She and her colleagues wanted to determine how Upper Colorado River Basin winter precipitation, March - July temperatures and November soil moisture levels influence annual streamflow at Lees Ferry, Arizona.

If the temperatures during the runoff season — March to July — were cooler than average, streamflow was higher than expected on the basis of winter precipitation alone, the team found.

The drought in California has been building for more than four years, as winter precipitation deficits slowed streams to a trickle and sent reservoir levels dipping, while unusually warm temperatures increased water demand.