Many places have
seen changes in rainfall, resulting in more floods, droughts, or intense rain, as well as more frequent and severe heat waves.
«In a 2 °C rise world, the region would
see changes in rainfall patterns: some areas would be getting much more rain than they are getting today and others would be experiencing droughts.
Not exact matches
The
changes to our planet as a result of global warming are apparent for all to
see: the receding glaciers
in temperate climates, the reduction
in rainfall and advancing deserts
in Africa and the lakes
in the Mideast and Asia that are virtually disappearing.
Since these set of ocean currents are known to influence global climate, the researchers were interested to
see if it correlated with
rainfall in the Western Hemisphere, and how such a correlation could
change over time.
The indications of climate
change are all around us today but now researchers have revealed for the first time when and where the first clear signs of global warming appeared
in the temperature record and where those signals are likely to be clearly
seen in extreme
rainfall events
in the near future.
Overall, the chances of
seeing a
rainfall event as intense as Harvey have roughly tripled - somewhere between 1.5 and five times more likely - since the 1900s and the intensity of such an event has increased between 8 percent and 19 percent, according to the new study by researchers with World Weather Attribution, an international coalition of scientists that objectively and quantitatively assesses the possible role of climate
change in individual extreme weather events.
«We're going to
see enormous
changes in the distribution of plants and animals, agricultural patterns, and patterns of
rainfall.»
Lead author Dr Nathalie Schaller of Oxford University's Department of Physics said: «We found that extreme
rainfall, as
seen in January 2014, is more likely to occur
in a
changing climate.
A group of researchers from Germany has taken to investigating the potential
changes in extreme
rainfall patterns across the UK as a result of future global warming and has found that
in some regions, the time of year when we
see the heaviest
rainfall is set to shift.
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).
Fires
in the West, droughts
in the Southwest, melting snowpack
in the Northwest, flooding and heavy
rainfall in the Northeast, the much stronger coastal storms and hurricanes that we've
seen in the Gulf: we've gotten to the point where we can all point to something that's happening and say: «This is what climate
change is doing to our region.»
A new study released Friday
in the journal Science Advances helps clear up a bit of the mystery, by showing that man - made climate
change is responsible for most of the
change seen in ocean surface temperatures near the equator across Asia, which
in turn affect regional
rainfall patterns including the Indian monsoon.
«They are doubling CO2, letting that
change the temperature,
rainfall, etc. and
seeing what that does to the AMOC
in their model.
For example, let's say that evidence convinced me (
in a way that I wasn't convinced previously) that all recent
changes in land surface temperatures and sea surface temperatures and atmospheric temperatures and deep sea temperatures and sea ice extent and sea ice volume and sea ice density and moisture content
in the air and cloud coverage and
rainfall and measures of extreme weather were all directly tied to internal natural variability, and that I can now
see that as the result of a statistical modeling of the trends as associated with natural phenomena.
The physical effects are
seen in changes of
rainfall, cloudiness, wind - strength and temperature, which are customarily lumped together
in the misleading phrase «global warming».
I've never been to a COP before, but I certainly have felt and experienced the effects of climate
change:
in the drought that people face
in my home country Kenya as a result of the disruption
in rainfall patterns, and
in the flooding that has
seen lives lost, crops destroyed and cattle dying.
In addition, tropical regions in Southeast Asia, Central Africa and the Amazon region of South America could see a 15 percent drop in rainfall by 2050, the study authors reported in the journal Nature Climate Chang
In addition, tropical regions
in Southeast Asia, Central Africa and the Amazon region of South America could see a 15 percent drop in rainfall by 2050, the study authors reported in the journal Nature Climate Chang
in Southeast Asia, Central Africa and the Amazon region of South America could
see a 15 percent drop
in rainfall by 2050, the study authors reported in the journal Nature Climate Chang
in rainfall by 2050, the study authors reported
in the journal Nature Climate Chang
in the journal Nature Climate
Change.
The rapid and large
changes in atmospheric temperature,
rainfall and biology can best be
seen in monthly data.
A pronounced shift can be
seen in extreme
rainfall events, heat waves and wind storms and the underlying reason is climate
change, says Muir - Wood, driven by rising greenhouse gas emissions.
Indicators based on daily precipitation data show more mixed patterns of
change but significant increases have been
seen in the extreme amount derived from wet spells and number of heavy
rainfall events.
According to Delworth,
in monsoon - dependent regions stretching from Africa to India, the
changing AMOC will «move the tropical rain belts further north, so the Sahel of Africa will
see the mean
rainfall decrease as those rain belts move further north as the North Atlantic warms, while a colder North Atlantic pushes the rain belts further south.»
A new study suggests the idea,
seen as a last - ditch way to deal with runaway climate
change, could cut
rainfall in the tropics by 30 %.
We're also
seeing similarly dramatic
changes in other aspects of climate and related effects on ecosystems, including the distribution of
rainfall, storm activity, extinction of plant and animal species, and seasonal
change.
That's an increase from 17.8 % today,
in an area likely to
see decreasing
rainfall in the coming years do to the effects of climate
change on precipitation patterns.