Sentences with phrase «percent change in precipitation»

Maps show projected percent change in precipitation in each season for 2071 - 2099 (compared to the period 1970 - 1999) under an emissions scenario that assumes continued increases in emissions (A2).

Quantitation is one of the elements Trenberth discusses in the piece I quoted (e.g., a percent change in precipitation), and is relevant in that some of this thread had assumed that Trenberth was proposing a new null hypothesis with no quantitative aspects.

Not exact matches

The Nordic region relies on hydroelectric power for more than 50 percent of its power generation, and change in precipitation is an important factor in setting prices.

Under various climate and land - use scenarios, coniferous stands are expected to lose 71 percent to 100 percent of their current range to deciduous stands across New England by 2085, particularly in Vermont, New Hampshire and Maine, due to increased temperature and precipitation and changes in timber harvesting.

ACPI assumes a 1 percent annual increase in the rate of greenhouse gas concentrations through the year 2100, for little change in precipitation and an average temperature increase of 1.5 to 2 degrees centigrade at least through the middle of 21st century.

A model by the Purdue Climate Change Research Center in West Lafayette forecasts, by 2050, the full growing seasons will expand by one month; there will be 33 to 45 more days with temperatures above 90 degrees; an increase in precipitation between 14 percent and 22 percent; and 24 days to 36 days less snow cover.

By looking at the signatures of climate change in precipitation intensity and comparing that to the internal variability and the observation, the researchers conclude that the probability of intense precipitation on any given day has increased by 7 percent over the last 50 years — well outside the bounds of natural variability.

Our interactions with climate, for far more than 99 percent of history, ran in one direction: Precipitation or temperatures changed, ice sheets or coastlines or deserts advanced or retreated, and communities thrived, suffered, or adjusted how or where they lived.

Percent changes in the amount of precipitation falling in very heavy events (defined as the heaviest 1 percent of events) from 1958 to 2012 show a clear national trend toward a greater amount of precipitation being concentrated in very heavy Percent changes in the amount of precipitation falling in very heavy events (defined as the heaviest 1 percent of events) from 1958 to 2012 show a clear national trend toward a greater amount of precipitation being concentrated in very heavy percent of events) from 1958 to 2012 show a clear national trend toward a greater amount of precipitation being concentrated in very heavy events.

On average in the United States, the amount of rain falling during the heaviest 1 percent of rainstorms has increased nearly 20 percent during the past 50 years — almost three times the rate of increase in total precipitation.4, 5 The Midwest saw an even larger average increase of 31 percent, surpassed only by the Northeast (at 67 percent).4 Scientists attribute the rise in heavy precipitation to climate change that has already occurred over the past half - century.6

Leaf area index, which is also enhanced by increasing atmospheric carbon dioxide, was the second most important factor, contributing an additional 21.8 percent, followed by climate change (precipitation and air temperature together) and the fraction of photosynthetically active radiation, which accounted for the remaining 18.3 and 14.6 percent increase in NPP, respectively.

Between 1958 and 2007, New England saw a 67 percent increase in heavy precipitation events and the Midwest experienced a 31 percent increase, according to the 2009 federal report «Global Climate Change Impacts in the United States.»

A sentence in Chapter 13 of the 2007 IPCC Fourth Assessment Report on Impacts, Adaptation and Vulnerability states: «Up to 40 percent of the Amazonian forests could react drastically to even a slight reduction in precipitation; this means that the tropical vegetation, hydrology and climate system in South America could change very rapidly to another steady state, not necessarily producing gradual changes between the current and the future situation.»

Percent changes in the amount of precipitation falling in very heavy events (the heaviest 1 %) from 1958 to 2012 for each region.

Relative changes in precipitation (in percent) for the period 2090 — 2099, relative to 1980 — 1999.

Other factors for the observed 7 percent increase in runoff from 1936 to 1999 could be changes in ice and permafrost melt or changes in the seasonality of precipitation and runoff, he said.

''... report that «most trends exhibited no clear precipitation change,» noting that «global changes in precipitation over the Earth's land mass excluding Antarctica relative to 1961 - 90 were estimated to be: -1.2 ± 1.7, 2.6 ± 2.5 and -5.4 ± 8.1 percent per century for the periods 1850 - 2000, 1900 - 2000 and 1950 - 2000, respectively.»

Gavin said upfront: «By looking at the signatures of climate change in precipitation intensity and comparing that to the internal variability and the observation, the researchers conclude that the probability of intense precipitation on any given day has increased by 7 percent over the last 50 years — well outside the bounds of natural variability».

According to the Intergovernmental Panel on Climate Change's June 2008 report «Climate Change and Water» precipitation will very likely, which the IPCC defines as more than a 90 percent probability, increase in tropical and high - latitude regions and will likely (more than 66 percent probability) decrease in subtropical and low - to mid-latitude regions.