why the weather pattern have changed so radically in the past few years?

Question

why the weather pattern have changed so radically in the past few years?

Answer 1

I've been around a LOT longer than you have and I've seen radical weather occur every single year of my life. Nothing unusual happening these days.

Answer 2

Two words: global warming. The root cause of it: Bush's inability to put the Kyoto Treaty into effect in this country. Why? He's too inept to do anything about global warming. Look at the Europeans! They're leading the charge to fight it now! Thank you, Oilman Bush!

Answer 3

You ask..



why the weather pattern have changed so radically in the past few years?



Good question.



Is part of the reason... because weather patterns have always changed?



In three decades of research, British climatologist Hubert H. Lamb assembled facts about the last 1,000 years' climate change.



With increasingly better tools and techniques, researchers have gathered comprehensive information about past climate change from tree rings, pollen, coral, glaciers, boreholes, and sea sediments sampled worldwide.



According to these reconstructed records, people in many parts of the world experienced:



-a relative global warming early in the millennium, called the Little Optimum (LO), a warmup.



-a relative global cooling a few centuries later, labeled the Little Ice Age (LIA), a cool down.



Examples are geographically widespread and numerous.



In central Argentina during the LO warm up, glaciers retreated and the plains regions turned warm and humid.



During the LIA, cool down glaciers advanced and the plains became cooler and semi-arid.



Study of the cultivation of subtropical citrus trees and herbs shows Northeast China had a temperature about 1C higher than today between the 1100 and 1200 A.D. warm up.



That same region felt the chill of the LIA cool down.. between 1550 and 1750 A.D., and that period was the coldest of the last 2000 years, according to oxygen isotope measurements in peat cellulose.



The temperature in the interior of South Africa was higher by 3C during the LO warm up and lower by 1C during the LIA cool down, compared with today, based on measurements of carbon and oxygen isotopes in stalagmites.



The surface temperature of the Sargasso Sea in the North Atlantic exhibited a 1C rise 1,000 years ago in the warm up and 1C decrease about 400 years ago in the cool down, as shown by the level of the oxygen isotope in seafloor sediments .



Borehole measurements into the Greenland ice sheet indicate a temperature 1C higher around 1000 A.D. in the warm up and 1C cooler between 1500 and 1850 A.D. cool down.



Other borehole measurements made worldwide confirm a warmth during the LO warm up as high as 0.5 C above present temperatures and as low as 0.7C below current values during the LIA cool down.



In western Europe, documentary evidence describes the moderation of harsh winters from 900 to 1300 A.D. relative to those in the 1300 to 1900 cool down.



During the LO warm up, typical subtropical plants such as olive trees grew in the Po valley of Northern Italy, and fig trees near Cologne, Germany.



More information gathered around the world confirms climate conditions during the Little Ice Age cool down and Little Optimum warm up.



For example, in northwestern Minnesota, lake sediments reveal dustier, and therefore probably much windier, conditions during the LIA cool down than today.



SUMMARY

We can look at the big picture.



Other studies examine such evidence as...

-tree growth ranging from the near Arctic, Siberia, and Alaska to Chile, New Zealand, and Tasmania;



-glacier evidence worldwide; pollen and phenological indicators in China; and lake fossils in Africa and the U.S. Great Plains.



The diverse climate indicators over the world show that the twentieth century was not unusually warm, compared with earlier times.



Cambridge University researchers write that the medieval warming "was a global event occurring between about 900 and 1250 A.D., possibly interrupted by a minor re-advance of ice between about 1050 and 1150 A.D."



Other researchers state, "Extreme [climate] events in the [South African] record show distinct teleconnections with similar events in other parts of the world, in both the northern and southern hemispheres."



A scientist from Stockholm University concludes, "The pattern of frequent and rapid changes in climate throughout the Holocene indicates that the warming of the last 100 years is not a unique event ... and is thus not an indication of human impact on the climate, as is frequently claimed."



The facts are these.

-The Little Optimum warmup and Little Ice Age cooldown were real.



-They were also widespread over the globe.



-The twentieth century is not the least bit climatically unusual.





When you choose to look at the big picture, the message is... global weather change happens, and it has always happened.



That has to be taken into consideration when you ask your question.... why the weather pattern have changed so radically in the past few years?







AN EVEN TOUGHER QUESTION IS THIS...



What is the change of the past few years, part of?



How much of the past few years change... is part of.. man made influence ....and how much is part of.. what you would expect, as part of the global change that has happened in the past and will happen today and will continue to happen in the future.



This is at the heart of why your question is not a simple question to answer.



When you hear that weather change is because of ______ ,

ask yourself ....



Can the answer be simple?



What is the big picture?



Do I have all sides of the story?

Answer 4

because of global warming, greenhouse effect, and the like.. man also has something to do with the changing of weather patterns.. (i.e. pollution..) :p

Answer 5

I heard that the big DAM they built in Asia (I think it was Japan), actually moved the earth an inch away from the sun! Someting about the weight of te water that is stored beind the dam shifted the earth! They have evacuated whole cities to let the water for the dam fill them up!

Answer 6

Global Warming due to man kinds burning of fossil fuels has caused the climate to change at a faster pace than it has over the past 200 million years. We are in trouble!!!!!

Answer 7

The weather pattern have changed due to cycles. Just like us we go trough cycles so does the world. Global Warming is connected with everything that we do or don't do. If the atmosphere is desturbed by all those greenhouse gases it opens, as it opens radioactivity increases creating hotter places to live in for fauna, glaciers melting (there goes our 2% of drinkable water) this also causes a disturbance of desalination which increases the changes of stronger hurricane making, new diseases happens due to the hotter wheather or for new migration of pests that have because they are looking to match the temperature that they once had, and also, the sun has a lot to do with it, it seems that it's growing little by little, this doesn't help anything at all.

Answer 8

because of global warming, and the hole in the ozone layer. It's scary but in my lifetime (25 yrs old) I have to careful of loosing some of the natural resources, like the glaciers are melting and the ocean is warming and the rivers and streams are warming and becoming shallow.

Answer 9

GLOBAL WARMING the day after tomorrow explain perty much everything

Answer 10

Observations: Statistically significant associations between trends in regional climate and impacts have been documented in ~100 physical processes and ~450 biological species or communities in terrestrial and polar environments. Although the presence of multiple factors (e.g., land-use change, pollution, biotic invasion) makes attribution of observed impacts to regional climate change difficult, more than 90% (~99% physical, ~80% biophysical) of the changes documented worldwide are consistent with how physical and biological processes are known to respond to climate. Based on expert judgment, we have high confidence that the overall patterns and processes of observations reveal a widespread and coherent impact of 20th-century climate changes on many physical and biological systems. Signals of regional climate change impacts may be clearer in physical and biological systems than in socioeconomic systems, which also are simultaneously undergoing many complex changes that are not related to climate change, such as population growth and urbanization. Socioeconomic systems have complex and varying mechanisms for adapting to climate change. There are preliminary indications that some social and economic systems have been affected in part by 20th-century regional climate changes (e.g., increased damages from flooding and droughts in some locations). It generally is difficult to separate climate change effects from coincident or alternative explanations for such observed regional impacts.



Unique and Threatened Systems: Tropical glaciers, coral reefs, mangroves, ecotones, and biodiversity "hot spots" are examples of unique and threatened entities that are confined to narrow geographical ranges and are very sensitive to climate change. However, their degradation or loss could affect regions outside their range. There is medium confidence that several of these systems will be affected by a small temperature increase; for example, coral reefs will bleach and glaciers will recede. At higher magnitudes of temperature increase, other and more numerous unique and threatened systems would be adversely affected.



Distribution of Impacts: The impacts of climate change will not be evenly distributed among the peoples of the world. There is high confidence that developing countries will be more vulnerable to climate change than developed countries, and there is medium confidence that climate change would exacerbate income inequalities between and within countries. There also is medium confidence that a small temperature increase would have net negative impacts on market sectors in many developing countries and net positive impacts on market sectors in many developed countries. However, there is high confidence that with medium to high increases in temperature, net positive impacts would start to decline and eventually would turn negative, and negative impacts would be exacerbated. Estimates of distributional effects are uncertain because of aggregation and comparison methods, assumptions about climate variability, adaptation, levels of development, and other factors.



Aggregate Impacts: With a small temperature increase, there is medium confidence that aggregate market sector impacts would amount to plus or minus a few percent of world gross domestic product (GDP), and there is low confidence that aggregate nonmarket impacts would be negative. Most people in the world would be negatively affected by a small to medium temperature increase. Most studies of aggregate impacts find that there are net damages at the global scale beyond a medium temperature increase and that damages increase from there with further temperature increases. The important qualifications raised with regard to distributional analysis (previous bullet item) also apply to aggregate analysis. By its nature, aggregate analysis masks potentially serious equity differences. Estimates of aggregate impacts are controversial because they treat gains for some as canceling out losses for others and because the weights that are used to aggregate over individuals are necessarily subjective.



Extreme Climate Effects: The frequency and magnitude of many extreme climate events increase even with a small temperature increase and will become greater at higher temperatures (high confidence). Extreme events include, for example, floods, soil moisture deficits, tropical and other storms, anomalous temperatures, and fires. The impacts of extreme events often are large locally and could strongly affect specific sectors and regions. Increases in extreme events can cause critical design or natural thresholds to be exceeded, beyond which the magnitude of impacts increases rapidly (high confidence).



Large-Scale Singularities: Large-scale singularities in the response of the climate system to external forcing, such as shutdown of the North Atlantic thermohaline circulation or collapse of the West Antarctic ice sheet, have occurred in the past as a result of complex forcings. Similar events in the future could have substantial impacts on natural and socioeconomic systems, but the implications have not been well studied. Determining the timing and probability of occurrence of large-scale singularities is difficult because these events are triggered by complex interactions between components of the climate system. The actual impact could lag the climate change cause (involving the magnitude and the rate of climate change) by decades to millenia. There is low to medium confidence that rapid and large temperature increases would exceed thresholds that would lead to large-scale singularities in the climate system.

http://www.grida.no/climate/ipcc_tar/wg2/658.htm

Answer 11

The earth goes through cycles. I believe global warming is true, but dont believe everyhitng that you hear about it. There is no longer a hole in the ozone layer and alot of the statistics that scare people are very skewed.

Answer 12

Global Warming!!!

Answer 13

If you mean like climate...everybody wants cool vehicles and more stuff and the factories that make the stuff put alot of smog in the ozone like cars and its messing up the ozone layer If you mean like the hurricanes and stuff I believe that its the beginning signs of The End Times because natural disasters are signs of the end times

Answer 14

They haven't changed "Radically". You have been reading to much BS from the media.

Answer 15

Because of Co2 emisions, also I'm a dumbass for believing that. Actually it's getting hotter in here because of the electric activities going on in our solar system.

Answer 16

The universe is trying to tell us something

Answer 17

due to greenhouse gases

and BUSH farts