Sentences with phrase «summer mean precipitation»

Not exact matches

Empirical studies of forests across Alaska show that North America's white spruce require at least 280 millimeters (11 inches) of precipitation each year, a number that rises if mean summer temperatures are higher than 15.5 degrees Celsius (roughly 60 degrees Fahrenheit).

Earlier spring - like weather means more of the precipitation will not be stored as long in the mountains, which can result in lower river and reservoir levels during late summer and early fall.

has decreased in winter, but no significant change in annual mean precipitation potentially because of very slight increases in spring and fall precipitation; precipitation is projected to increase across Montana, primarily in spring; slight decrease in summer precipitation; variability of precipitation year - to - year projected to increase

In that case (along with greater precipitation, and the precipitation belt moving to higher latitudes), there could be more snow in the winter & greater melting in the summer (in higher latitudes), while I'd think the lower latitudes (with less precip) and the local mean temp being higher, would melt the glaciers faster, without adequate snowfall & low winter temps to slow this glacial decrease.

As for how this could be — and in light of the findings of the references listed above — Rankl et al. reasoned that «considering increasing precipitation in winter and decreasing summer mean and minimum temperatures across the upper Indus Basin since the 1960s,» plus the «short response times of small glaciers,» it is only logical to conclude that these facts «suggest a shift from negative to balanced or positive mass budgets in the 1980s or 1990s or even earlier, induced by changing climatic conditions since the 1960s.»

Multi-model mean changes in surface air temperature (°C, left), precipitation (mm day — 1, middle) and sea level pressure (hPa, right) for boreal winter (DJF, top) and summer (JJA, bottom).

According to data from the Salekhard weather station the recent mean air summer temperature was 0.9 °C higher and winter was 1.2 °C higher than between 1883 and 1919; and the amount of precipitation also increased by 32 mm in summer and by 46 mm in winter.

First point, a long known fact is that the upper midwest (meaning, the northern tier, west of the 25 inch annual average rainfall line) has a Summer precipitation maximum, so dry winters can indeed be expected.

In mountain regions that are warming, as most are, a larger fraction of precipitation falls as rain rather than as snow, which means lower stream flows in spring and summer.

Figure 3, above: Regional time series of boreal summer (JJA) irrigation, ensemble - mean temperature anomalies, and ensemble - mean precipitation anomalies for Western North America (130 ° W - 100 ° W, 30 ° N - 50 ° N), India (68 ° E-88 ° E, 8 ° N -36 ° N), and China (98 ° E-122 ° E, 22 ° N - 42 ° N).