Sentences with phrase «of earlier snowmelt»

You can't fake spring coming earlier, or trees growing higher up on mountains, or glaciers retreating for kilometres up valleys, or shrinking ice cover in the Arctic, or birds changing their migration times, or permafrost melting in Alaska, or the tropics expanding, or ice shelves on the Antarctic peninsula breaking up, or peak river flow occurring earlier in summer because of earlier snowmelt, or sea level rising faster and faster, or any of the thousands of similar examples.

The reason I say that is that Revkin apparently didn't find reason enough to report on the Bush administration's firing of my brother, after I had sent him the documentation that accompanied NOAA's removal of my brother from the National Weather Service for his 2003 press release documenting the effects of early snowmelt and spring flooding on Midwest flood prone areas, unquestionably due to anthropogenic global warming.

Not exact matches

Changes in flow patterns of warm Pacific Ocean air from the south were driving earlier spring snowmelt, while decreasing summer sea ice had the greatest influence on later onset of snowpack in the fall.

Overall, aquatic ecosystems in western North America are predicted to experience increasingly earlier snowmelt in the spring, reduced late spring and summer flows, warmer and drier summers, and increased water temperatures — all of which spell increased hybridization between these species.

Researchers have evaluated different mechanisms that could account for declining snowpack in a warming world: earlier onset of snowmelt, a change in melt rates and shifts from snow to rain under certain conditions.

The trends driven by earlier snowmelt are likely to as they are «are very much in line with the projections of future climate» from climate models, study co-author Berit Arheimer of the Swedish Meteorological and Hydrological Institute said.

«Since the precipitation is likely to fall as snow this could mean either earlier or later timing of snowmelt.»

Mark Flanner, an assistant professor at the University of Michigan who did not participate in the research, said that several factors could reduce albedo of existing ice, including earlier snowmelt and melt ponds on top of the ice.

Melting glaciers, early snowmelt, and severe droughts will cause more dramatic water shortages and increase the risk of wildfires in the American West.

Stone, R.S., E.G. Dutton, J.M. Harris, and D. Longnecker, 2002: Earlier spring snowmelt in northern Alaska as an indicator of climate change.

Across Montana, conditions that lead to high fire risk (i.e., likelihood of occurrence) are becoming more common: seasonal maximum temperatures are increasing, snowmelt is occurring earlier, minimum relative humidities are decreasing, and fuels are becoming drier (Jolly et al. 2015; Seager et al. 2015).

These tend to be years with earlier onset of spring, specifically earlier snowmelt.

The snowmelt was a full 10 days ahead of the previous earliest instance, in 2002.

The years with the earliest spring snowmelt, which was one - third of the total number of years we studied, account for more than 70 percent of the area burned in large forest wildfires, and 43 percent of the area burned in nonforest fires.

Forests that historically had large areas with no snow on the ground for two to four months and high moisture loss from soils and vegetation in spring and summer have seen the biggest increases in wildfire in early spring snowmelt years (for example, the northern Rockies and parts of the Sierra Nevada).

One more step: The unprecedented early snowmelt in the north is an extra source of heat, which helps enhance a high pressure ridge aloft.

... «Conclusions on the Timing of Snowmelt Runoff and Humidity 1) Trends were shown for recent earlier in the year annual snowmelt runoff at three river stations within the Northern Great Plains and Upper Snowmelt Runoff and Humidity 1) Trends were shown for recent earlier in the year annual snowmelt runoff at three river stations within the Northern Great Plains and Upper snowmelt runoff at three river stations within the Northern Great Plains and Upper Midwest.

These include millions of trees killed in recent years by beetles that prefer warmer weather, and declines in spring soil moisture brought on by earlier snowmelt.

The Northern Rocky Mountain forests are particularly sensitive to the changes brought by a warming climate and earlier spring snowmelt, said A. LeRoy Westerling, co-director of the Sierra Nevada Research Institute at the University of California, Merced.

This urban heat island has benefits for the residents, e.g., it has led to a 9 % reduction in the number of freezing degree days and earlier snowmelt in the town.

Likely aggravating factors included snowmelt from the warm temperatures of the event and already - saturated soils from heavy rains several weeks earlier.

A strong snowmelt in late April / early May and torrential rains in late May / early June could have been caused by the occurrence of persistent quasibarotropic high - amplitude QRA structures with zonal wave numbers m = 6 and m = 7 in the field of the NH midlatitude meridional velocity.

In addition, climate change is very likely to lead to more frequent extreme heat events and daily precipitation extremes over most areas of North America, more frequent low snow years, and shifts towards earlier snowmelt runoff over much of the western US and Canada (high confidence).

But snowmelt water is seasonal, and the price - reducing effect of hydropower lasts only a few months a year, typically in late spring and early summer.

The two interior sites are projected to retain the characteristics of a nival regime by mid-century, although streamflow - timing shifts result from increased mid-winter rainfall and snowmelt, and earlier freshet onset.

There has been a trend toward earlier snowmelt and a decrease in snowstorm frequency on the southern margins of snowy areas.

For instance, earlier snowmelt may not change the total quantity of water available but can lead to earlier runoff that is out of phase with peak water demand in the summer.

Because of its cold - adapted features and rapid warming, climate change impacts on Alaska are already pronounced, including earlier spring snowmelt, reduced sea ice, widespread glacier retreat, warmer permafrost, drier landscapes, and more extensive insect outbreaks and wildfire, as described below.

Earlier snowmelt, associated with warmer temperatures, can lead to water supply being increasingly out of phase with water demands.

Forest Service chief Thomas Tidwell told Congress two years ago that his agency faces conditions of higher temperatures, earlier mountain snowmelt, and much longer fire seasons, which «our scientists believe... is due to a change in climate.»

The ensemble mean of the MMD models projects a general decrease in snow depth (Chapter 10) as a result of delayed autumn snowfall and earlier spring snowmelt.

Melting glaciers, early snowmelt, and severe droughts will cause more dramatic water shortages and increase the risk of wildfires in the American West.

Noah Diffenbaugh, a professor of earth sciences from Purdue University, published a much - noticed article in Geophysical Research Letters a few months ago in which he predicted that spring snowmelt could start 2 months earlier by 2100.

By 2100, spring snowmelt could begin up to 2 months earlier in the western U.S. (see here for a description of the image).

The beginning of the snow accumulation season (the end of the snowmelt season) is projected to be later (earlier), and the fractional snow coverage is projected to decrease during the snow season (Hosaka et al., 2005).