Increases in heavy precipitation have also been documented even when mean
total precipitation decreases (for example, see Northern Japan in Figure 2.35, or Manton et al., 2001).
Not exact matches
The annual
precipitation total for Alaska is slightly
decreasing at an average rate of 0.03 inch per decade.
In locations that are accustomed to getting snow during the winter, the
total amount of snow each year is already
decreasing as the planet warms from increasing greenhouse gases; the percentage of
precipitation falling as snow is on the decline, with more of it falling as rain.
Second Assessment of Climate Change for the Baltic Sea Basin https://books.google.com/books?isbn=3319160060 The BACC II Author Team averaged frequency of extreme 1 - day
precipitation totals above 15 mm and a... 4.6 Cloudiness and Solar Radiation 4.6.1 Cloudiness Records of cloudiness and solar... There is a trend of
decreasing cloud cover over the Baltic Sea basin......
Intuitively, it might be expected that the
precipitation of calcium carbonate would
decrease solution pCO2 and dissolution of calcium carbonate would increase pCO2 because
total dissolved inorganic carbon (DIC) concentrations and
total alkalinity (TA) change in this manner.
This is projected to occur even in regions where
total precipitation is projected to
decrease, such as the Southwest.1, 7,2
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.
Glacier runoff does not increase or
decrease the long term runoff for a basin,
total runoff over a period of several years is determined largely by annual
precipitation.
For example, in Siberia for the summer season during the years 1936 to 1994 there was a statistically significant
decrease in
total precipitation of 1.3 % / decade, but the number of days with
precipitation also
decreased.
The number of stations reflecting a locally significant increase in the proportion of
total annual
precipitation occurring in the upper five percentiles of daily
precipitation totals outweighs the number of stations with significantly
decreasing trends by more than 3 to 1 (Figure 2.36 c).
Together with the progressive shortening of the ISM season and gradual southward retreat of the summer ITCZ, the
total amount of monsoon
precipitation decreased in those areas located at the northern fringe of the ISM domain, but increased in areas closer to the equator.
Widespread increases in heavy
precipitation events have been observed, even in places where
total amounts have
decreased.
The
total area (land and ocean) where
precipitation decreases is also larger in the high - end models than in the non-high-end models, by 14 per cent in DJF and 7 per cent in JJA.