0
If you mean the present climate change, then scientists agree that it is caused by man's deforestation and burning of fossil fuels.
If we are discussing actual major temperature changes though, like the warming trend of the past 11,000 years the answer is far different and the changes far ore profound.
What is known about our long term history of climate change comes primarily from a single source. The glacial samples from Lake Vostok in Antarctica. These samples tell us, with remarkable detail some interesting things:
1. we know the planet goes through cycles. These cycles are regular and the longest is just over 100K years long. We are in the warmest section of this long cycle currently.
This warming is believed to be caused by planetary alignments of the major planets in our solar system. Our orbit around the sun is far from a perfectly circular orbit and the distance our planet is from the sun varies greatly. When all of the larger planets are scattered throughout the solar system we have a far more elliptical orbit the when the larger planets are all on a single side of the sun. This event happens once every 100K years and corresponds to these warm periods. This current cycle has seen an overall warming of about 11 degrees C from this issue. Man's contribution is an unknown portion of a partial contribution of the 0.3 degrees of warming we have seen since 1939. Even if man is the sole contributor, it is nothing compared to this warming.
Other portions of our orbit that influence our climate are listed within the Milankovich effect link below.
2. Solar variation is agreed by climate experts to have assisted in temperature variations, including the current cycle of warming. The problem here is that, according to the IPCC, (the United Nations body that is considered The Bible of climate change) that while we know it has caused some portion of the current climate change, what portion and how is still "very poorly" understood.
(see IPCC links)
While there are other issues that have caused the major climate changes of the past few thousand years, these two are in the primary category.
3. It is also likely that a wobble in the Earth's axis of rotation contributes to these ice age cycles we've seen wax and wane over the past 800,000 years (based on ice cores, so may not be globally representative in details, but it is in the big picture). The cycle has been quite regular the last 400,000 years, and seems to be getting more pronounced and longer with time. Five times in the last 400,000 years we've seen a very steep rise in temperatures to come out of an ice age, then the temperatures begin a much slower descent back into ice age conditions. The most recent cycle (before the sharp warming that started about 25,000 years ago) was most pronounced, with Earth's average temperature possibly fluctuating by as much as 15C from the peak ~125,000 years ago to the nadir ~30,000 years ago. Taking anthropomorphic global warming out of the equation, and looking purely at the ice age cycle, we appear to have reached the end of the cycle's sharp temperature increase several thousand years ago, and should be in the early stages of the gradual cool-down toward an ice age.
What else can I help you with?
What are internal forcing mechanisms in climate change?
Natural changes in the components of earth's climate system and their interactions are the cause of internal climate variability, or "internal forcings." Scientists generally define the five components of earth's climate system to include Atmosphere, hydrosphere, cryosphere, lithosphere (restricted to the surface soils, rocks, and sediments), and biosphere.
Do scientists disagree or agree on why the climate is changing?
To define an Information Avalanche [that supports the continental Line Of Freezing moving steadily Northward (along with those pests that used to be killed by Frost)]; well it goes like this: any Disagreers ARE NOT SCIENTISTS and not even Students.
Which climate group has precipitation as its primary criterion?
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns. The climate group that has precipitation as its primary criterion is the tropical rainforest climate (designated as Af) characterized by high and consistent levels of rainfall throughout the year.
What percentage of people believe in global warming?
We have no idea how many agree.A:The AAAS (American Association for the Advancement of Science) boasts about ten million members internationally, including 262 societies and academies of science. That is huge, and probably larger than the number of scientists world wide. A better estimate for the number of scientists and researchers would probably in the neighborhood of 6 million. Not all of them accept the general consensus of anthropogenic global warming. To estimate that number, we would need a representative poll of scientists, of whom probably fewer than 2000 lay claim to recent specific work in climate science. A survey nearly ten years old indicated 97% out of 1372 climate scientists who responded accepted the consensus, which tallies to 1330 people.But of scientists in general, the percent would be lower. Many of them would not be aware of specific research, or even all that interested in results far outside their field of expertise. Nevertheless, a poll of general scientists revealed about 80% concurred with the consensus, suggesting the total number of scientists who accept global warming would be approximately 4.6 million.A:Most scientists and their organizations around the world believe that global warming is happening and it is being caused by human actions, burning fossil fuels andcutting down forests.Scientific Organizations that accept the broad scientific consensus that global warming is happening include:NASA's Goddard Institute for Space Studies in New YorkAmerican Association for the Advancement of Science (AAAS)National Research CouncilAmerican Institute of PhysicsEuropean Academy of Sciences and ArtsEuropean Science FoundationThe United Nations' Intergovernmental Panel of Climate Change (IPCC)American Geophysical UnionUS National Academy of ScienceAmerican Meteorological AssociationAmerican Medical AssociationAmerican Astronomical SocietyJoint Science AcademiesAmerican Meteorological SocietyNetwork of African Science AcademiesInternational Union for Quaternary ResearchAustralian Coral Reef Society.
What is the primary source of evidence proposed by scientists to support the theory of an ancient Earth?
The primary source of evidence proposed by scientists to support the theory of an ancient Earth is radiometric dating of rocks and fossils. By measuring the decay of radioactive isotopes within these materials, scientists can estimate their ages and establish a timeline for Earth's history that stretches back billions of years.
What natural factors do scientists think might be causing climate change?
There are no natural factors that scientists think are causing the present climate change. It is now clear that global warming is caused by deforestation and the burning of fossil fuels (coal, oil and natural gas).
Do all scientists believe there is a link between human activity and global warming?
As with all issues, not ALL scientists believe in the link between human activity and global warming. However, the majority of scientists feel that the evidence for global warming is adequate to prove its existence. The majority of scientists who reaffirm the theory of global warming believe there is a link between climate and human activity. According to the Union of Concerned Scientists, "The Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) states: it is a greater than a 90 percent certainty that emissions of heat-trapping gases from human activities have caused "most of the observed increase in globally averaged temperatures since the mid-20th century." "
What are internal forcing mechanisms in climate change?
Natural changes in the components of earth's climate system and their interactions are the cause of internal climate variability, or "internal forcings." Scientists generally define the five components of earth's climate system to include Atmosphere, hydrosphere, cryosphere, lithosphere (restricted to the surface soils, rocks, and sediments), and biosphere.
Do scientists disagree or agree on why the climate is changing?
To define an Information Avalanche [that supports the continental Line Of Freezing moving steadily Northward (along with those pests that used to be killed by Frost)]; well it goes like this: any Disagreers ARE NOT SCIENTISTS and not even Students.
Can you provide insight into the latest research findings on climate change, Professor?
The latest research findings on climate change indicate that human activities, such as burning fossil fuels and deforestation, are the primary drivers of global warming. Scientists warn that urgent action is needed to reduce greenhouse gas emissions and mitigate the impacts of climate change.
Where do the primary consumers live in the everglades?
Primary consumers in the Everglades primarily inhabit freshwater environments, including the sawgrass marshes, sloughs, and tree islands. These areas provide abundant vegetation, such as grasses and aquatic plants, which serve as food sources for herbivores like deer, rabbits, and various insects. The unique wetland ecosystem supports a diverse range of primary consumers that are adapted to the subtropical climate and seasonal water fluctuations.
Can you identify the primary external influences affecting human resource management?
The primary external influences are:Political climate,Economic climate,Company strategies,Technological developments
How long does climate take to change?
The minimum time scale used by climate scientists is five years. This is why most of their data is represented by seasonal measurements (to indicate the extent of noise) and a five year running average to chart climate trends. Natural climate change during most of the Cenozoic has occurred over a hundred thousand year cycle known as the Milankovich Cycle. This has been earth's primary driver of climate for many millions of years.
Why is it important for scientists to record and study data?
Recording and studying data is the primary way scientists can find out things about the world.
Which climate group has precipitation as its primary criterion?
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns. The climate group that has precipitation as its primary criterion is the tropical rainforest climate (designated as Af) characterized by high and consistent levels of rainfall throughout the year.
What type of consumers are opossums?
Yes I believe it is however it can also be classed as a primary consumer.
Why do scientists think the idea of global warming is correct?
Warmer climatic trends throught the past several years has suggested that global warming is, indeed, happening. Research the melting of the polar ice caps OR check out information on sea levels rising. This will guide you in the right direction to fully understand the answer to your question.
