Researchers have been doing detection - and - attribution studies on well - understood, well - documented phenomena such as temperature changes and
rainfall patterns for more than a decade.
This is a value based on charts of
rainfall patterns for the area.
Not exact matches
Massachusetts Birds and Our Changing Climate builds on those previous reports and identifies conservation priorities
for more than a hundred species that will be affected by changing
patterns of temperature and
rainfall, both manifestations of a warming planet.
Climate
patterns that bring extra
rainfall to the region don't account
for the dramatic increase in flood size, the team found.
The drones can't come too soon
for scientists who study the El Niño — Southern Oscillation, a set of shifting global temperature and
rainfall patterns triggered by warm surface waters that slosh back and forth across the equatorial Pacific every few years.
The drinking water
for 500,000 people in the region comes from mountain snowmelt, McAdams said, and
rainfall patterns are changing.
Climate change may cause major changes in
rainfall patterns and river flows in the coming decades, bringing more pressure
for water - transfer schemes.
Wrestling with natural variability Scientists have looked
for these changes in
rainfall patterns, but they are often difficult to distinguish because there is so much natural variability in precipitation.
The scientific literature contains two different mechanisms
for a similar
pattern — one stems from vegetation self - organizing in response to limited
rainfall, and the other results from bustling termite mounds improving the lives of nearby plants.
But experts say the
pattern of Eocene
rainfall and rivers, while perhaps important
for ancient climate changes, may not help understand future climate changes.
This has important implications
for understanding and predicting changes in
rainfall patterns over large populations across the Asia and Oceania regions.
The UM Rosenstiel School researchers used historical observations of cloud cover as a proxy
for wind velocity in climate models to analyze the Walker circulation, the atmospheric air flow and heat distribution in the tropic Pacific region that affects
patterns of tropical
rainfall.
About 50 years after installing the panels, India and eastern Australia,
for example, get warmer because of less
rainfall, and the northwestern United States gets warmer because of wind
pattern changes.
But the new study accounts
for more climate variables, not just temperature, that could come into play, including atmospheric carbon dioxide levels and
rainfall patterns.
An increased risk of intense, short - duration
rainfall events in mid-latitude regions has been predicted consistently
for well over a decade as part of the
pattern of human influence on precipitation.
However, the effects of introducing these particles are not expected to be the same across the globe, and the offsetting of human - induced changes in other quantities such as
rainfall and weather
patterns may not work as well as
for temperature.
In the article, «The Natural and Social History of the Indigenous Lands and Protected Areas Corridor of the Xingu River Basin,» the authors cite original interviews with indigenous leaders who note significant changes in the forest's
rainfall patterns, river levels, fires and agriculture cycles their groups have relied on
for thousands of years.
My research indicates that the Siberian peat moss, Arctic tundra, and methal hydrates (frozen methane at the bottom of the ocean) all have an excellent chance of melting and releasing their stored co2.Recent methane concentration figures also hit the news last week, and methane has increased after a long time being steady.The forests of north america are drying out and are very susceptible to massive insect infestations and wildfires, and the massive die offs - 25 % of total forests, have begun.And, the most recent stories on the Amazon forecast that with the change in
rainfall patterns one third of the Amazon will dry and turn to grassland, thereby creating a domino cascade effect
for the rest of the Amazon.With co2 levels risng faster now that the oceans have reached carrying capacity, the oceans having become also more acidic, and the looming threat of a North Atlanic current shutdown (note the recent terrible news on salinity upwelling levels off Greenland,) and the change in cold water upwellings, leading to far less biomass
for the fish to feed upon, all lead to the conclusion we may not have to worry about NASA completing its inventory of near earth objects greater than 140 meters across by 2026 (Recent Benjamin Dean astronomy lecture here in San Francisco).
If these
rainfall patterns persist long enough
for people on the ground to take advantage, it could well direct human activity toward those areas and accelerate their demise via exploitation, just as if the
rainfall had actually stopped and the trees had died in place
for that reason.
The new study, which looked at 30 - year averages of
rainfall amounts, revealed that a similar
pattern has persisted
for the past 10,000 years.
Climate change could mean England is in
for more such extreme
rainfall events because of increasing moisture in the atmosphere and changes in atmospheric weather
patterns, a new study detailed online Monday in the journal Nature Climate Change finds.
Changes in
rainfall patterns could eventually reduce the availability of drinking water and of water
for everyday household needs like washing, cooking and cleaning.
Given that studies of past climate
patterns have found evidence of super-deluges in the Northeast, and that scientists have observed a century - long trend toward more
rainfall coming in heavy downpours in the world's temperate zones (a
pattern matching what's expected in a greenhouse - heated world), the logic in planning
for the worst case in designing everything from a dam to a basement to a rural road is growing ever stronger.
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).
Crucially, the project is also tackling the effects of climate change that are already making themselves known —
for example exploring solar dryers as an alternative to the traditional coffee drying techniques which have been affected by changing
rainfall patterns.
One shouldn't take this picture too literally as a prediction
for any particular region, but it help one understand why the signal in
rainfall will be positive in some region and negative in others, with the
pattern tending to increase gradients.
Around the Bean Belt, rising minimum growing temperatures, changes in
rainfall patterns, and rising pest and disease incidence, are already making life harder
for coffee farmers.»
Similar negative effects occur with worsening air pollution — higher levels of ground - level ozone smog and other pollutants that increase with warmer temperatures have been directly linked with increased rates of respiratory and cardiovascular disease — food production and safety — warmer temperatures and varying
rainfall patterns mess up staple crop yields and aid the migration and breeding of pests that can devastate crops — flooding — as rising sea levels make coastal areas and densely - populated river deltas more susceptible to storm surges and flooding that result from severe weather — and wildfires, which can be ancillary to increased heat waves and are also responsible
for poor air quality (not to mention burning people's homes and crops).
Climate disruption will substantially change the
patterns of
rainfall and rivers and water works which are critical
for the production of food and living conditions
for many people.
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.
Continued greenhouse gas emissions are likely to be associated with changes in
rainfall patterns, desertification, more frequent storms and rises in sea level, all of which have implications
for human movement.
It finds that the Southern Oscillation Index (SOI)-- the basic tool
for forecasting variations in global and oceanic
patterns — and
rainfall fluctuations recorded over the last decade are similar to those in 1914 -1924.
Can the science reliably predict significant changes in
rainfall patterns at regional or local levels
for say the next 5 decades?
For example, the Hadley cell, the large - scale
pattern of atmospheric circulation that transports heat from the tropics to the subtropics, has marched south during recent decades, moving the subtropical dry zone (a band that receives little
rainfall) along with it.
The global treaty that headed off destruction of earth's protective ozone layer has also prevented major disruption of global
rainfall patterns, even though that was not a motivation
for the treaty, according to a new study...
Drought is expected to occur 20 - 40 percent more often in most of Australia over the coming decades.6, 18 If our heat - trapping emissions continue to rise at high rates, 19 more severe droughts are projected
for eastern Australia in the first half of this century.6, 17 And droughts may occur up to 40 percent more often in southeast Australia by 2070.2 Unless we act now to curb global warming emissions, most regions of the country are expected to suffer exceptionally low soil moisture at almost double the frequency that they do now.3 Studies suggest that climate change is helping to weaken the trade winds over the Pacific Ocean, with the potential to change
rainfall patterns in the region, including Australia.20, 21,16,22
Climate change is major change in temperature,
rainfall, snow, or wind
patterns lasting
for many years.
And forests provide development benefits beyond their role in climate mitigation such as livelihoods
for indigenous and local communities and maintaining hydrological systems and
rainfall patterns.
For example, the northern East Asian summer monsoon (NEASM) is, for the years of highest SST anomalies in the tropical eastern Pacific (TEP), affected by the Pacific - East Asian (PEA) teleconnection pattern, which consists of a wave creating an anomalously strong western North Pacific (WNP) anticyclonic circulation and anomalously strong cyclonic circulation in the NEASM region, creating more monsoon rainfa
For example, the northern East Asian summer monsoon (NEASM) is,
for the years of highest SST anomalies in the tropical eastern Pacific (TEP), affected by the Pacific - East Asian (PEA) teleconnection pattern, which consists of a wave creating an anomalously strong western North Pacific (WNP) anticyclonic circulation and anomalously strong cyclonic circulation in the NEASM region, creating more monsoon rainfa
for the years of highest SST anomalies in the tropical eastern Pacific (TEP), affected by the Pacific - East Asian (PEA) teleconnection
pattern, which consists of a wave creating an anomalously strong western North Pacific (WNP) anticyclonic circulation and anomalously strong cyclonic circulation in the NEASM region, creating more monsoon
rainfall.
In addition, the
pattern of sea surface temperatures at low latitudes is extremely important
for regional climate variations (shown,
for example, by the increased likelihood of heavy winter
rainfall in California when the eastern tropical Pacific warms in El Niño events).
My research looks at how much we can expect greenhouse gases to warm the earth this century and what that means
for rainfall patterns worldwide.
As a hydrologist — I would happily predict much more summer
rainfall in Australia, India, China, Indonesia and Africa
for a decade or three more — based on
patterns of sea surface temperature in the Pacific.
A good match,
for example, is a neighboring gridcell that has similar
rainfall patterns but is slightly warmer in the summer and winter.
In so doing, it should help climate scientists pinpoint causes of drought and extreme
rainfall in the past and identify
patterns that could lead to better climate model projections
for the future.
Altering cloud cover,
for example, could change
rainfall patterns and increase droughts and floods unpredictably.
Rigorous scientific analysis has found that the extreme
rainfall that caused a Texas flooding in May of 2015,
for example, was caused by a fairly typical
rainfall pattern associated with that year's El Niño, a naturally occurring climate cycle, which had been supercharged by human - made climate change.
Cultivation of the arabica coffee plant, staple of daily caffeine fixes and economic lifeline
for millions of small farmers, is under threat from climate change as rising temperatures and new
rainfall patterns limit the areas where it can be grown, researchers have warned.
Researchers have developed the first year - by - year record of
rainfall in sub-Saharan West Africa
for the past 3,000 years, and identified a daunting
pattern: a 30 - to -60-year cycle of serious droughts that last a decade or more, punctuated by killer megadroughts that last
for centuries.
As an Australian, I could raise some points about Alice Springs (
for example, in the dry centre of one of the driest continents,
rainfall influenced by several possible passing weather systems more than an identifiable annual
pattern, etc).
Interviews with indigenous communities indicate that
rainfall patterns and river levels are changing, and the minor fires traditionally used
for small - scale rotational agriculture are more difficult to control.