a recent study of annual
precipitation changes in California using 25 [climate] model projections indicates that «12 projections show drier annual conditions by the 2060s and 13 show wetter.»
There were also a few small areas over northern Africa, Alaska and the adjacent part of eastern Russia (Chukotka) where larger
precipitation changes in the high - end models were projected, but these areas are small.
Abstract The Key Role of Heavy Precipitation Events in Climate Model Disagreements of Future Annual
Precipitation Changes in California Climate model simulations disagree on whether future precipitation will increase or decrease over California, which has impeded efforts to anticipate and adapt to human - induced climate change........
Models disagree on annual mean
precipitation changes in the NA monsoon region.
Bonfils, C.J.W., B.D. Santer, T.J. Phillips, K. Marvel, L.R. Leung, C. Doutriaux, and A. Capotondi, 2015: Relative contributions of mean - state shifts and ENSO - driven variability to
precipitation changes in a warming climate.
This paper demonstrates there is a glimmer of hope on the horizon for new climate simulation technology to crack the difficult problem of projecting future summer
precipitation changes in continental interiors.
Although there is still some disagreement in the preliminary results (eg the description of polar ice caps), a lot of things appear to be quite robust as the climate models for instance indicate consistent patterns of surface warming and rainfall trends: the models tend to agree on a stronger warming in the Arctic and stronger
precipitation changes in the Topics (see crude examples for the SRES A1b scenarios given in Figures 1 & 2; Note, the degrees of freedom varies with latitude, so that the uncertainty of these estimates are greater near the poles).
In the context of future changes in the atmospheric hydrological cycle, understanding
precipitation changes in the subtropics is of particular importance given
This does not necessarily mean the mechanisms driving
precipitation changes in climate models are wrong.
«Now we can compare
precipitation changes in various parts of Europe, Asia, and North America for the past twelve centuries.
«This is one of the most representative records of
precipitation changes in the eastern Pacific, and it goes a good way toward explaining seasonal tropical rain band and El Niño dynamics,» said first author Daniel Nelson, who did the research for his UW doctorate in oceanography.
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.
Climatic variability like
precipitation changes or increase
in extreme events such as storms and tropical cyclones is known to significantly modify the Earth's surface.
Indeed, Arctic
change in the last two decades has been profound — not just dwindling sea ice, but also noticeably increased
precipitation, and thus snow cover, over Eurasia.
Climate
change is having a dramatic impact on Earth's biodiversity, by causing rapid fluctuations
in temperature and
precipitation that alter species» environments.
Although the study does not directly identify a link between this type of variation and current climate
change vulnerability, these
precipitation - linked variables could be a source of vulnerability
in the future, Bay and her colleagues noted.
Warming climate is projected to make many now - dry areas dryer,
in part by
changing precipitation patterns.
The difference among the recharge projections from the 11 global
change models reflects the difference
in future regional
precipitation that the models project, the authors write.
«Higher temperatures and
changes in precipitation result
in pressure on yields from important crops
in much of the world,» says IFPRI agricultural economist Gerald Nelson, an author of the report, «Climate
Change, Agriculture, and Food Security: Impacts and Costs of Adaptation to 2050».
Climate
change is likely to influence rainfall patterns
in the Sierra Nevada as well as the amount of dust that makes its way into the atmosphere, so the hope is that a better understanding of how aerosols affect
precipitation will help water managers
in the future.
Long - term
changes in temperature and
precipitation are making some rivers flood days, weeks or even months earlier than they did 50 years ago, and pushing flooding
in other areas much later, researchers report August 11
in Science.
«
Changes in recharge don't necessarily map onto changes in precipitation even at a very local scale,» Meixne
Changes in recharge don't necessarily map onto
changes in precipitation even at a very local scale,» Meixne
changes in precipitation even at a very local scale,» Meixner said.
With
changes in precipitation levels and the availability of water, their livelihoods and their ability to stay on the soil that they've been tilling will be affected badly.
According to research
in the September Nature Climate
Change,
precipitation patterns
in the area have increased, which may help larger glaciers such as this one stick around a while longer.
Climate
change will decrease the volume of
precipitation in the Southwest while decreasing the snowpack
in the Rockies.
«It is very hard to attribute a specific human contribution to a
change in precipitation, although we do have more confidence
in the
changes in heat,» Karl said.
«This record shows that there have been quite large
changes in El Niño
precipitation in this area
in the past, and that we might expect large
changes in the future,» Nelson said.
«If we can understand the mechanisms that caused these
changes, then we can better predict how
precipitation might
change in the future.»
Countless additional forces — melting ice sheets, shifts
in precipitation,
changes in atmospheric and oceanic circulation, to name a few — will influence the process as well.
Boersma and Rebstock looked at the cause of every recorded chick mortality
in an Argentinian colony of Magellanic penguins, over a nearly 30 - year period, and compared these with
changes in temperature and
precipitation over the same time.
«We realized
in 2013 that there was almost no data on the drought resistance of Amazonian canopy trees, and several recent droughts raised the question of how these trees would fare if climate
change caused increased anomalies
in precipitation.»
Hantavirus, the pulmonary disease spread by rodents, for example, has been linked to
changes in precipitation.
Attributable human - induced
changes in the likelihood and magnitude of the observed extreme
precipitation during Hurricane Harvey.
The gathering will draw approximately 400 representatives from other Arctic nations and interested foreign observers, and will give Obama a platform to highlight how
changes in the Arctic will affect the rest of the world by accelerating warming, contributing to sea - level rise and
changing precipitation patterns at lower altitudes.
The results show that the correlation between climate
change — i.e. the variation
in temperature and
precipitation between glacials and interglacials — and the loss of megafauna is weak, and can only be seen
in one sub-region, namely Eurasia (Europe and Asia).
These findings from University of Melbourne Scientists at the ARC Centre of Excellence for Climate System Science, reported
in Nature Climate
Change, are the result of research looking at how Australian extremes in heat, drought, precipitation and ocean warming will change in a world 1.5 °C and 2 °C warmer than pre-industrial condi
Change, are the result of research looking at how Australian extremes
in heat, drought,
precipitation and ocean warming will
change in a world 1.5 °C and 2 °C warmer than pre-industrial condi
change in a world 1.5 °C and 2 °C warmer than pre-industrial conditions.
It turns out that the steady dripping of water deep underground can reveal a surprising amount of information about the constantly
changing cycles of heat and cold,
precipitation and drought
in the turbulent atmosphere above.
«Furthermore, our work focuses on increases / decreases
in temperatures, but similar analyses are needed to estimate consensus
changes in other meteorological variables such as
precipitation.
To see how increased temperatures might contribute to the reductions
in the river's flow that have been observed since 2000, Udall and Overpeck reviewed and synthesized 25 years of research about how climate and climate
change have and will affect the region and how temperature and
precipitation affect the river's flows.
«
In general, the amount of precipitation is increasing but also the kind of precipitation is changing,» said McFadden, an associate professor in UCSB's Department of Geograph
In general, the amount of
precipitation is increasing but also the kind of
precipitation is
changing,» said McFadden, an associate professor
in UCSB's Department of Geograph
in UCSB's Department of Geography.
Experiments Prather and her team conducted
in California's Sierra Nevada produced the first conclusive evidence that dust aerosols can
change the amount of
precipitation produced by clouds.
ADVANCES: Meteorologists can now detect
precipitation changes at a smaller scale, making it much easier to forecast flash floods, says Jonathan Gourley, a research hydrologist at the National Severe Storms Laboratory
in Norman, Okla..
He launched the Village Ecodynamics Project
in 2001 to simulate how virtual Pueblo Indian families, living on computer - generated and geographically accurate landscapes, likely would have responded to
changes in specific variables like
precipitation, population size and resource depletion.
To produce visualizations that show temperature and
precipitation changes similar to those included
in the IPCC report, the NASA Center for Climate Simulation calculated average temperature and
precipitation changes from models that ran the four different emissions scenarios.
The
changes shown
in these maps compare an average of the model projections to the average temperature and
precipitation benchmarks observed from 1971 - 2000.
Widening of the tropics would also probably be associated with poleward movement of major extratropical climate zones due to
changes in the position of jet streams, storm tracks, mean position of high and low pressure systems, and associated
precipitation regimes.
Dry places are expected to get drier with climate
change, while wet places are expected to get wetter, but Crouch said that the particular
precipitation pattern seen
in June isn't what is expected
in a warming world, according to the National Climate Assessment that was released
in May.
Based on research led by University of Cincinnati geologist Eva Enkelmann
in the St. Elias Mountain Range — located along the Pacific coastal region of North America — the way a mountain range moves and behaves topographically can also
change and create its local climate by redirecting wind and
precipitation.
In late June, the U.S. Government Accountability Office released an assessment of how the consequences of climate change, from rising temperatures and sea levels to changes in precipitation patterns and sea ice cover, might impact the militar
In late June, the U.S. Government Accountability Office released an assessment of how the consequences of climate
change, from rising temperatures and sea levels to
changes in precipitation patterns and sea ice cover, might impact the militar
in precipitation patterns and sea ice cover, might impact the military.
Uncertainty about rain, little uncertainty about sea level rise Climate
change could also affect
precipitation in California, though the two models USGS used
in its research produced different results.