Sentences with phrase «early season precipitation»

Not exact matches

For the entire Northern Hemisphere, there is evidence of an increase in both storm frequency and intensity during the cold season since 1950,1 with storm tracks having shifted slightly towards the poles.2, 3 Extremely heavy snowstorms increased in number during the last century in northern and eastern parts of the United States, but have been less frequent since 2000.11,15 Total seasonal snowfall has generally decreased in southern and some western areas, 16 increased in the northern Great Plains and Great Lakes region, 16,17 and not changed in other areas, such as the Sierra Nevada, although snow is melting earlier in the year and more precipitation is falling as rain versus snow.18 Very snowy winters have generally been decreasing in frequency in most regions over the last 10 to 20 years, although the Northeast has been seeing a normal number of such winters.19 Heavier - than - normal snowfalls recently observed in the Midwest and Northeast U.S. in some years, with little snow in other years, are consistent with indications of increased blocking (a large scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere.5 However, conclusions about trends in blocking have been found to depend on the method of analysis, 6 so the assessment and attribution of trends in blocking remains an active research area.

For this reason, any delay in onset or early truncation of our rainy season (which typically runs from October through May) can quickly result in diminished annual precipitation totals; conversely, the occurrence of just a couple of additional storm events can lead to well - above totals for the year.

The difference between the dense, small - celled late wood of one season and the wide - celled early wood of the following spring enables the age of a tree to be estimated, and the ring widths or density can be related to climate parameters such as temperature and precipitation.

The 2012 - 2013 water year was especially remarkable because it began rather early with a series of very intense and moist storms associated with «atmospheric rivers» in Northern California during November but then quickly tapered off, with only light and sporadic precipitation falling for the remainder of the typical «rainy» season from mid-December through May.

Although the state has benefited from several large storms over the past four years, they have often come early in the winter season — a time when precipitation is generally not heavy — and then the storms stopped arriving completely.

With wNA forest loss, there are significant declines in both precipitation and temperature during the early growing season, however it is the change in the relative humidity that dominates the observed increase in VPD.

Sea levels are rising (ask the Mayor of Miami who has spent tax monies to raise road levels), we've had 15 of the hottest years eve measured, more precipitation is coming down in heavy doses (think Houston), we're seeing more floods and drought than ever before (consistent with predictions), the oceans are measuring warmer, lake ice in North America is thawing sooner (where it happens in northern states and Canada), most glaciers are shrinking, early spring snowpacks out west have declined since the 1950's, growing seasons are longer throughout the plains, bird wintering ranges have moved north, leaf and bloom dates recorded by Thoreau in Walden have shifted in that area, insect populations that used to have one egg - larva - adult cycle in the summer now have two, the list goes on and on.

Precipitation so far this season has been somewhat below average across the more populated coastal parts of the state, although very early Sierra Nevada snowpack numbers are actually looking pretty good at the moment.

California's rainy season typically runs from early October to late March, with very little precipitation outside of these months.

Wang and Schubert (2014) find that the North Pacific SST warm anomalies during early 2013 created a «predilection» for dry conditions during the second half of the 2013 - 2013 «rainy season» in California, and Funk et al. (2014) also report that the observed Pacific SST anomalies during 2013 - 2014 contributed to the extremely low precipitation that was observed during 2013 - 2014.