Now we are at the point where the estimates are that even if there is above
average rainfall in the coming year, catchment runoff will not increase because soils are so parched and aquifers so low.
Australia experienced much above
average rainfall in association with strong, extended La Niña conditions during 2010 — 2012.
One of these is a decadal pattern where
the average rainfall in dry periods is a quarter of the average during wet periods.
This map shows
the average rainfall in October over 30 years (1981 - 2010).
Average rainfall in Northern England and South Scotland, at 255 mm / month was also anomalously high.
In particular southern Europe experienced unusually large amounts of rainfall, with Portugal recording the second wettest March since 1931, and much above
average rainfall in large parts of Spain and along the Adriatic coast.
The Climate Council report states that since the mid-1990s, south - east Australia has experienced a 15 % drop in rainfall during late autumn and early winter, with a 25 % slump in
average rainfall in April and May.
The area has also seen below
average rainfall in recent months, meaning it was more susceptible to catching fire.
In any case, the odds are still in favor of getting above
average rainfall in San Diego in March, due to the El Nino.
However, going by eyeball, there's very little meaningful difference between the 1900 - 1930 and 1990 - 2012
average rainfall in the worldbank's website.
It would be more of a «miracle» if you got below
average rainfall in March than above average rainfall.
Physical features of this El Nino that MIGHT be relevant to this deviation from expectation are (1) the area of strongly above -
average rainfall in the tropical Pacific Ocean does not extend as far eastward, toward the coast of South America, as it has in other strong El Nino events, such as 1997 - 98 and 1982 - 83.
According to FAO figures we looked up, daily
average rainfall in the region is between 4.7 mm / day for Belize and 8.0 mm / day for Costa Rica and Panama (the region becomes wetter moving towards the equator).]
The average rainfall in this little town is 4490 mm per year, with February and March (when we visited) the rainiest months.
While stereotypes often reference the city's gloomy weather, Seattle actually ranks low among U.S. cities for
average rainfall in summer months.
And just for fun, they threw in a red herring: the trailing 10 - year
average rainfall in the US.
Similarly, they found higher than
average rainfall in areas that typically experience lower annual rainfall saw positive effects on wood frog population growth.
Yearly
average rainfall in Temecula is approximately 14 inches, as compiled by the Rancho California Water District.
For Australia, El Niño is usually associated with below -
average rainfall in Queensland, Victoria, New South Wales and Tasmania.
Above average and
average rainfall in recent years and delivery of significant volumes of environmental water have improved conditions in the Lower Lakes and Coorong.
Not exact matches
Winter
rainfall was generally above
average, and although September was unseasonably warm and dry
in New South Wales and Queensland, good
rainfall occurred
in October.
During a 5 - year period between 1988 and 1998 when total
rainfall from April to August was less than 14 inches (compared to 20 inches
in normal years),
average organic corn yields were 31 % greater than conventional system.
I asked Pedro how the harvest was going, and he said it was the best
in more than a decade because the better than
average rainfall had caused the bushes to set a great many fruits.
Ask him what the
average rainfall or highest temperature day was back
in 2006 and he'll probably know the answer.
The driest month
in terms of
rainfall and rain days is January, which receives an
average of 27.5 millimetres (1.08
in) over 4.6 days.
Even with the wettest month being
in November, the
rainfall still
averages at 50.1 millimetres (1.97
in).
The National Weather Service says
rainfall in the region is several inches above
average this year, for the month of May especially.
If
rainfall becomes more irregular, as it's predicted to
in the future, «then with the same
average rainfall, the peatland can support less peat,» Cobb says.
Increases
in average temperature and
rainfall were associated
in Zanzibar with higher numbers of cholera cases within a definite time period.
This suggests that unexpected above -
average rainfall events
in the Ohio and Mississippi River basins will continue to increase the frequency of extreme flooding events.
Australia also experienced record
rainfall in early 2012, and while La Niña, a natural variation, was behind much of that, researchers found that human - caused climate change increased the chance of the above -
average rainfall by 5 to 15 percent.
There are more than a dozen widely used global climate models today, and despite the fact that they are constantly being upgraded, they have already proved successful
in predicting seasonal
rainfall averages and tracking temperature changes.
When
in January
rainfall was double the expected
average over wide areas, many people made cautious links between such extreme weather and global climate change.
In this study, published in the journal Royal Society Open Science, the researchers mapped the global occurrence of mammalian species living in different social systems to determine how averages and variation in rainfall and temperature explain species distribution
In this study, published
in the journal Royal Society Open Science, the researchers mapped the global occurrence of mammalian species living in different social systems to determine how averages and variation in rainfall and temperature explain species distribution
in the journal Royal Society Open Science, the researchers mapped the global occurrence of mammalian species living
in different social systems to determine how averages and variation in rainfall and temperature explain species distribution
in different social systems to determine how
averages and variation
in rainfall and temperature explain species distribution
in rainfall and temperature explain species distributions.
So if you think of going
in [a] warming direction of 2 degrees C compared to a cooling direction of 5 degrees C, one can say that we might be changing the Earth, you know, like 40 percent of the kind of change that went on between the Ice Age; and now are going back
in time and so a 2 - degree change, which is about 4 degrees F on a global
average, is going to be very significant
in terms of change
in the distribution of vegetation, change
in the kind of climate zones
in certain areas, wind patterns can change, so where
rainfall happens is going to shift.
«If this
rainfall change was caused simply by a warmer atmosphere holding more moisture, we would have expected an increase
in the
average rainfall when each system, organised or disorganised, occurs,» said Dr Tan
Rainfall down 40 - 80 % The Geneva - based World Meteorological Organization said last week that between February and May of this year, rainfall over Europe as a whole ranged from 40 to 80 percent of the long - term average from 1951 to 2000, and in many parts of western and central Europe it was even below 40
Rainfall down 40 - 80 % The Geneva - based World Meteorological Organization said last week that between February and May of this year,
rainfall over Europe as a whole ranged from 40 to 80 percent of the long - term average from 1951 to 2000, and in many parts of western and central Europe it was even below 40
rainfall over Europe as a whole ranged from 40 to 80 percent of the long - term
average from 1951 to 2000, and
in many parts of western and central Europe it was even below 40 percent.
U.S. Forest Service officials told the Associated Press that they are concerned there may be more wildfires than usual this summer, given the lower - than -
average rainfall and activity so early
in a season that typically peaks
in late July and August.
Agriculture
in the region was impacted such that the U.S. Department of Agriculture declared more than 1,000 counties
in 26 states natural disaster areas as
rainfall dropped an
average of roughly 26 inches down to just over 13.
Dr Stephen Grimes of Plymouth University, who initiated the research project, highlighted the climate changes that must have caused this increase
in sediment erosion and transport — «We have climate model simulations of the effect of warming on
rainfall during the PETM event, and they show some changes
in the
average amounts of
rainfall, but the largest change is how this
rainfall is packaged up — it's concentrated
in more rapid, extreme events — larger and bigger storms.»
However, shifts
in the
average climate of the tropical oceans could change the relative amounts of expansion
in these two adjoining oceans, and ultimately modulate the long - term change
in the IPWP impact on regional
rainfall amounts.
As well as this, increased
average temperatures and more erratic
rainfall could become be the «new normal» according to the report — with significantly less
rainfall in the Mediterranean, Madagascar and the Cerrado - Pantanal
in Argentina.
Brawn's team looked at the relationship between population growth rates and the length of the dry season during those 33 years, then simulated another 50 years with an
average of a 10 percent change
in the
rainfall pattern
in Panama's dry season.
«This suggests that unexpected above
average rainfall events
in the Ohio and Mississippi River basins will continue to increase the frequency of extreme flooding events on these Great Rivers.»
Rainfall, too, is minimal, with an
average annual accumulation of 110 mm
in the north, and 600 mm
in the south.
In a study set to come out in Nature tomorrow, an international group of scientists reports that they simulated atmospheric behavior using several different models and used them to forecast anthropogenically driven changes in average annual rainfall at different latitudes from 1925 to 199
In a study set to come out
in Nature tomorrow, an international group of scientists reports that they simulated atmospheric behavior using several different models and used them to forecast anthropogenically driven changes in average annual rainfall at different latitudes from 1925 to 199
in Nature tomorrow, an international group of scientists reports that they simulated atmospheric behavior using several different models and used them to forecast anthropogenically driven changes
in average annual rainfall at different latitudes from 1925 to 199
in average annual
rainfall at different latitudes from 1925 to 1999.
«On
average, when considering the 20 - year mean, we find a 10 - 15 percent decrease
in California's
rainfall.
The authors predict that over the next 20 years, California could see a 10 to 15 percent decrease
in rainfall on
average.
It also showed the potential for putting existing water supplies on a roller coaster, with a several - inch increase expected
in rainfall in some years compared to the annual
average, as well as some years of decrease over the same period.
The analysis — one of the most detailed climate change forecasts for any city to date — predicts that Los Angeles's
average rainfall will probably stay roughly the same
in decades ahead, despite the current drought.