Not exact matches
The Agency reminds us that small
changes in the
average temperature of the planet can translate to large and potentially dangerous shifts in climate and
weather.
Compiled by scientists at 13 federal agencies, it contains the results of thousands of studies showing that climate
change caused by greenhouse gases is affecting
weather in every part of the United States, causing
average temperatures to rise dramatically since the 1980s.
The strength and path of the North Atlantic jet stream and the Greenland blocking phenomena appear to be influenced by increasing temperatures in the Arctic which have
averaged at least twice the global warming rate over the past two decades, suggesting that those marked
changes may be a key factor affecting extreme
weather conditions over the UK, although an Arctic connection may not occur each year.
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.
If the world keeps burning fossil fuels and does little else to prevent climate
change — the trajectory we are on —
weather events now considered extreme, like the one in 1997 which led to floods so severe that hundreds of thousands of people in Africa were displaced, and the one in 2009 that led to the worst droughts and bushfires in Australia's history, will become
average by 2050.
But the questionnaire, which asks for
averages based on
weather conditions over the past 10 years, does not require cities to anticipate how climate may
change in the seven to eight years between bidding and hosting the games.
But the U.K. Met Office (national
weather service), the U.S.'s National Center for Atmospheric Research and other partners around the globe aim to
change that in the future by developing regular assessments — much like present evaluations of global
average temperatures along with building from the U.K. flooding risk modeling efforts — to determine how much a given season's extreme
weather could be attributed to human influence.
Threats — ranging from the destruction of coral reefs to more extreme
weather events like hurricanes, droughts and floods — are becoming more likely at the temperature
change already underway: as little as 1.8 degree Fahrenheit (1 degree Celsius) of warming in global
average temperatures.
Data from its first national climate
change adaptation strategy issued last year show that extreme
weather events have killed more than 2,000 people each year on
average since the 1990s.
«Drought years» happen on
average every five years in the Amazon and are typically a result of
changes to wind and
weather patterns brought about by warming in the Atlantic Ocean during events of the climate phenomenon El Niño.
Though
weather is constantly
changing, the
average weather is a good indicator as to which coat you should invest the most money in.
Better still, get rid of the (
weather and El Nino influenced) short - term five year
averaging and show long term climate
changes by putting ten and twenty year moving
averages on the data.
Therefore the issue is not that on
average it is hotter in the middle of the city or the suburb or the airport, but rather whether the environment of the
weather station has
changed significantly in such a way as to effect the anomoly.
The most severe impacts of climate
change — damaging and often deadly drought, sea - level rise, and extreme
weather — can only be avoided by keeping
average global temperatures within 2 degrees C (3.6 degrees F) of pre-industrial levels.
At this point, does it really matter what we call the dramatic
changes in the Earth's
average temperatures that are driving the extreme
weather events we now live through on a regular basis?
Could they produce sets of
weather - maps that if somehow integrated over 30 years could produce a «supermap» showing actual climate
change in terms of e.g
average windspeeds, rainfall, cloud - cover, pressure and so on?
Put simply, a «climate variation» is a
change in the
average weather for a particular time of year; for example, winters becoming warmer.
There are three large
average surface wind patterns few know about: the tropical easterlies (tradewinds), the midlatitude westerlies and the polar easterlies, but variability results in significant
weather changes.
Andrew, are you claiming that
average weather does not
change over time?
You are correct that regional and
average weather changes over various time scales of interest, and that extreme events continue to occur.
The climate
change lobby desperately needs 2009 to break records for high
average temperatures and extreme
weather.
Future crop yields will be more strongly influenced by anomalous
weather events than by
changes in
average temperature or annual precipitation (Ch.
People are affected far more by local
weather extremes than by any
change in global
average temperature.
Study shows China's severe
weather patterns
changing drastically since 1960 In one of the most comprehensive studies on trends in local severe
weather patterns to date, an international team of researchers found that the frequency of hail storms, thunderstorms and high wind events has decreased by nearly 50 percent on
average throughout China since 1960.
In reconstructing the
changes in global mean temperature since 1850, Berkeley Earth has examined 16 million monthly
average temperature observations from 43,000
weather stations.
«The most active period of the witchcraft trials coincides with a period of lower than
average temperature known to climatologists as the «little ice age»... In a time period when the reasons for
changes in
weather were largely a mystery, people would have searched for a scapegoat in the face of deadly
changes in
weather patterns.
The sudden
change in minimum temperature differences between Perth Metro and Perth Airport from 1997 can be seen in
average annual minima recorded at both
weather stations.
Climate
change refers to a
change in the «
average weather» of an area caused by the unnatural warming of the globe.
«It seems clear that climate
change is happening, we continually have record temperatures for the time of year, there is no return of temperatures to «below
average» which we would expect if this was just statistical variation, there is increasing turmoil in the
weather, the barrier reef is bleaching to an extent not seen before and so on.»
But the current rise in Arctic temperature is due not to
changes in global
average temperature but to
changes in regional
weather patterns.
Climate computer models falsely assume that plant - fertilizing carbon dioxide drives climate
change... and predict
average global temperatures a full 1 degree F higher than have actually been observed by satellites and
weather balloons, a gap that is widening every year.
DES MOINES (AP)-- Warmer and wetter
weather in large swaths of the country have helped farmers grow corn, soybeans and other crops in some regions that only a few decades ago were too dry or cold, experts who are studying the
change said... The
change is due in part to a 7 % increase in
average U.S. rainfall in the past 50 years, said Jay Lawrimore, chief of climatic analysis for the Asheville, N.C. - based National Climactic Data Center... Brad Rippey, a U.S. Department of Agriculture meteorologist, said warming temperatures have made a big difference for crops such as corn and soybeans... For example, data from the National Agricultural Statistics Service show that in 1980, about 210,000 soybean acres were planted in North Dakota.
Climate computer models falsely assume that plant - fertilizing carbon dioxide drives climate
change... and predict
average global temperatures a full 1º F higher than have actually been observed by satellites and
weather balloons, a gap that is widening every year.
Climate
change is a long - term
change in Earth's
weather patterns or
average climate, including temperature and precipitation.
Climate models are what happens when you calculate
changes over a long enough period of time for the fluctuations in
weather to
average out so that you can see the underlying trend.
Simplest is to point to the ratio of rates, for an approximation of the scale of the
changes between the 1910 - 1940 gross
weather station global interpolated
average under lower (but rising) CO2E conditions, and the later
average under higher rising CO2E conditions at higher net energy levels.
From this post I get the impression the climate scientists measuring the
average conditions of
weather at discreet time intervals and following the
change in the
average over time is a very limited approach seeking to identify causes and effects, when we have known for a long time the major inputs in the climate such as insolation, orbital characteristics, evaporation, condensation and etc..
At last, a responsible government has recognised that global
average sea - level
change is no more relevant to coastal management than
average global temperatures are to the design of residential heating and cooling systems — local
weather and local sea - level
change is what matters.
Since the millenium, exceptionally strong storms have prevailed globally, oceans are covering once habitable islands, Beijing is suffocating, 100 year and 150 year floods are frequent, major aquifers have been depleted (the Salton Sea is drying up),
weather patterns have
changed drastically, winters in the S.E.states are definitely experiencing drastically warmer
averages (some areas only 10 - 14 nights of freezing temp vs. 1970 28 - 30 nights of freezing temp).
Climate
change is the long - term
average of a region's
weather events lumped together.There are some effects of greenhouse gases and global warming: melting of ice caps, rising sea levels,
change in climatic patterns, spread diseases, economic consequences, increased droughts and heat waves.
While the
weather is always
changing, especially over the short term, climate is the
average of
weather patterns over a longer period of time (usually 30 or more years).
Because
weather patterns vary, causing temperatures to be higher or lower than
average from time to time due to factors like ocean processes, cloud variability, volcanic activity, and other natural cycles, scientists take a longer - term view in order to consider all of the year - to - year
changes.
Climate is the
average of many individual
weather components over a period of time, and it is their
change (if any) over that time that causes «climate
change.»
Climate
change (as the term implies) is a
change to the climate, which is really a
change to the
average of the
weather.
While climate
change won't stop cold
weather from happening, it will steadily
change the behavior of the atmosphere to be warmer, on
average, across the entire globe.
When this happens the Arctic and North Atlantic Oscillations tend to become more negative and this pressure
changes alter the
average winter
weather in the northern hemisphere.
The polar coverage of GISTEMP arises mainly from the fact that GISTEMP allows each
weather station to contribute to an area of radius 1200 km around the station - this distance was determined by examining how temperature
changes with distance in regions with good coverage (see Of
Averages and Anomalies - Part 1B).
How will that increase in Earth's temperature
change the
weather (
average temperatures, and ranges?
This is predicted to produce
changes such as the melting of glaciers and ice sheets, more extreme temperature ranges, significant
changes in
weather conditions and a global rise in
average sea levels.
While the
average earthly temperature does climb in correlation to the amount of atmospheric carbon, people tend to rely on their observations of the
weather to validate or repudiate the science behind climate
change.