Suppose, for example, you regularly watch a local TV weatherman forecast the weather for your area. Warnings have been issued for many decades now regarding catastrophic climate change that forecasted certain trends or occurrences that we should already have witnessed. Yet such predictions have turned out to be very, very wrong. And it is also the case with the more recent claims about catastrophic global warming.
Global Temperature Projections Author: David Herring March 6, According to climate scientists, our world is highly likely to continue to warm over this century and beyond. The biggest source of added carbon dioxide is from people burning coal and other fossil fuels.
Explore this interactive graph: Click and drag to display different parts of the graph. To squeeze or stretch the graph in either direction, hold your Shift key down, then click and drag. The graph shows the average of a set of temperature simulations for the 20th century black linefollowed by projected temperatures for the 21st century based on a range of emissions scenarios colored lines.
The shaded areas around each line indicate the statistical spread one standard deviation provided by individual model runs. They can generate global temperature projections because they have been painstakingly observing and measuring the main mechanisms that influence climate for more than a century.
How fast will human population grow? How much energy will we choose to use? Will our primary sources of energy continue to be fossil fuels such as coal, oil, and natural gas? To what extent will we continue to slash and burn forested regions, and how fast will we reforest cleared areas?
These are the types of choices that will determine our greenhouse gas emissions and ultimately drive the amount of warming Earth experiences.
The scenario represented by the red trend line IPCC Scenario A2 assumes humans will continue to accelerate the rate at which we emit carbon dioxide.
This is consistent with a global economy that continues to rely mainly on coal, oil, and natural gas to meet energy demands. The middle trend green, IPCC Scenario A1b assumes humans will roughly balance their use of fossil fuels with other, non-carbon emitting sources of energy.
These scenarios are estimates, and greenhouse gas concentrations may grow at rates that are higher or lower than the scenarios shown in the graph.
If future carbon dioxide emissions follow the same trajectory as they have over the last decade, increasing at a rate of more than 3 percent per year, carbon dioxide levels in the atmosphere would exceed the scenario represented by the red line IPCC scenario A2 by the end of this century, if not before.
These maps show the average of a set of climate model experiments projecting changes in surface temperature for the periodrelative to the period from All models project some warming for all regions, with land areas warming more than oceans.
Though scientists expect Earth to be perceptibly warmer years from now than it is today, there is still a wide range in how much warming Earth will experience. Our choices will make a big difference. The Physical Science Basis.
Do you have feedback to offer on this or another article? It is virtually certain our world will continue to warm over this century and beyond.
The exact amount of warming that will occur in the coming century depends largely on the energy choices that we make now and in the next few decades.Features. Before you urbanagricultureinitiative.com UKCP09 we recommend you go to the Using Climate Projections pages.
These contain useful information about the projections and how to use urbanagricultureinitiative.com How can UKCP09 help you? Global climate change has already had observable effects on the environment. Glaciers have shrunk, ice on rivers and lakes is breaking up earlier, plant and .
Research Report by Climate Central. Antarctic ice sheet models double the sea-level rise expected this century if global emissions of heat-trapping pollution remain high, according to a new study. Climate Change Predictions. $ billion. Without adapting to the changing climate, some Midwestern and southern counties could see a decline in yields of more than 10% over the next five to 25 years, with a 1-in chance of losses of crops by more than 20%.
Unbiased climate change and Ocean Acidification information-an impact assessment scientist separates climate change facts from fiction.
This page introduces what climate change is, the potential impacts and resistance to the otherwise accepted understanding that it is man-made climate change.