Sentences with phrase «precipitation projections over»

Not exact matches

Understanding past changes in the characteristics of such events, including recent increases in the intensity of heavy precipitation events over a large part of the Northern Hemisphere land area (3 — 5), is critical for reliable projections of future changes.

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.

Projections of future climate over the U.S. suggest that the recent trend towards increased heavy precipitation events will continue.

The climate projections predicted larger increases in temperature but smaller increases in precipitation over the 21st century compared with the 20th.

Hagos, S. M., et al., 2016: A projection of changes in landfalling atmospheric river frequency and extreme precipitation over western North America from the Large Ensemble CESM simulations.

2: Our Changing Climate, Key Messages 5 and 6).4, 10 A range of model projections for the end of this century under a higher emissions scenario (A2), averaged over the region, suggests about 5 % to 20 % (25th to 75th percentile of model projections) increases in winter precipitation.

Given current uncertainties in representing convective precipitation microphysics and the current inability to find a clear obser - vational constraint that favors one version of the authors» model over the others, the implications of this ability to engineer climate sensitivity need to be considered when estimating the uncertainty in climate projections.»

The projections also indicate an increase in the basin - averaged precipitation and an increase in the frequency of extreme precipitation events over the region as a whole.

Wang, J. & Zhang, X. Downscaling and projection of winter extreme daily precipitation over North America.

The median changes in temperature and precipitation for December, January and February (DJF) and June, July and August (JJA), averaged over the period 2070 — 2099, were calculated from the high - end and non-high-end projections together with the maximum range from each group of models.

[10] Observed trends in precipitation and floods over Europe are in line with these future projections, however their climate change signal is quite complex.