What Is The Relationship Between Global Warming And Climate Change – Bellwork Week 09 The ozone hole is a completely different issue than global warming! There is a relationship between them. In your class please explain: “What are those links?”

Summary: The ozone hole is caused by ozone-depleting chemicals produced by industry, such as CFCs. One link is that CFCs are also ‘greenhouse gases’. Enhanced global warming is the likely result of increased amounts of ‘greenhouse gases’, such as carbon dioxide and methane, in the atmosphere. Although the Earth’s surface warms, the upper atmosphere cools, thus increasing the area where polar stratospheric clouds can form. This makes a large area vulnerable to ozone depletion and provides another link between the two issues.

What Is The Relationship Between Global Warming And Climate Change

Ozone depletion and global warming are two very different things! How do human activities affect the ozone layer? What can people do about changes in the ozone layer? Movie Remember!

The Global Economic Costs From Climate Change May Be Worse Than Expected

It is produced by a chemical reaction involving sunlight, nitrogen oxides, hydrocarbons, and diatomic oxygen. Chemically active with a short shelf life in the atmosphere. It forms a natural layer above the atmosphere that protects us from the sun’s harmful ultraviolet rays. Pollution in the lower atmosphere.

Photo dissociation of diatomic oxygen D. Ozone is produced C. one oxygen atom combined with O2 B. Two oxygen atoms

1984- researchers found % of ozone in the upper stratosphere of Antarctica was destroyed 1987- “Smoking gun” – CFC’s primarily the main cause of ozone depletion Polar vortex – very cold air and huge detachment leave the rest of the atmosphere to the sun. come back after a month

Polar Stratospheric Clouds (PSCs) Ozone destroying clouds form in the stratosphere during polar winter Chlorine Nitrate (cl catalyzes ozone destroys) (ClONO2) Nitric acid (HNO3) NOTE!

Analysis: Why Scientists Think 100% Of Global Warming Is Due To Humans

Ozone depletion varies over most of the Antarctic and the highest O3 concentrations are found here naturally.Concentrations at the equator are nearly constant. The lowest temperatures are found at the equator

The ozone hole has, in general, been increasing in size over the past two decades. At times the ozone hole has stretched over 25 million square kilometers, an area a hundred times larger than the United Kingdom and equivalent to one sixth of the world’s land mass. The chart above shows the minimum ozone (measured in Dobson units) found in the Antarctic. It shows that ozone levels have decreased over the past two decades.

Ozone depletion due to the release of CFCs CFCs are stable and have a long lifetime in the stratosphere, release chlorine and enter into a catalytic chain reaction- destroys ozone with more UV radiation. reaches the lower atmosphere “Scientists have discovered a link between CFCs and the depletion of the ozone layer.”

“If the ozone layer is depleted, more harmful UV-B radiation will reach Earth through the damaged ozone layer.” Causes of Ozone Deficiency: suppression of the immune system Increased acid storage Lower crop yields and reduced productivity

What Is Climate Change?

More UV-B radiation means more skin cancer, more eye diseases and cataracts, less plant production, less ocean production, plastic damage.. More about Skin Cancer & Cataracts at increasing in Australia, New Zealand, South Africa, Argentina & Chile because the ozone layer is thin for several months of the year in those areas

19 Management Issues A key issue is whether ozone depletion is natural or human-induced Montreal Protocol Collection and Reuse of CFCs Replacing CFCs with HFCs and HCFCs

The Montreal Protocol Treaty was created in 1987 by 36 countries that committed to a 35% reduction in CFC emissions in the atmosphere between 1989 and 2000. 3 more met in 1997 in Montreal. important chemicals for ozone CFC production 85% Other Regulations/Meetings (see text)

Stop production of all ozone depleting substances CFC’s replace HCFC’s – contain fewer chlorine atoms per molecule than CFC’s HFC’s – contain fluorine but no chlorine HC’s – hydrocarbons – effective in refrigerants & anti-foaming agents in refrigerators

Physical Drivers Of Climate Change

Technofixes Physicist Alfred Wong- Every year he wants to start long football fields. The pods are controlled by radio and consist of electrical wires that inject negatively charged electricity into the stratosphere when exposed to high voltage (see article) Others suggest using lasers to detonate CFCs / but no one knows how will affect the weather, birds, or airplanes

Yet the black market of CFC countries in some anti-cheats is the best way to deal with global environmental problems

25 Activity Please sit in groups of five with people who have not done your homework. Please describe the following ozone chemicals in your table. Halons Methyl bromide Carbon tetrachloride Methyl chloroform Hydrogen chloride

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How Earth’s Climate Changes Naturally (and Why Things Are Different Now)

Global warming is one symptom of the larger problem of change. NOAA cartoon by Emily Greenhalgh.

It has caused warming—warming due to rapid increases in carbon dioxide and other greenhouse gases from people burning coal, oil, and gas.

Change, on the other hand, can be man-made or natural changes, such as ice ages. In addition to burning fossil fuels, humans can cause changes by releasing air pollutants—small particles that reflect sunlight and cool—the atmosphere, or by changing the landscape, for example, from carbon-storing forest to farmland.

The planet has already undergone changes: Earth’s average temperature has fluctuated over the 4.54 billion years of the planet’s history. The planet has gone through long cold periods (“ice ages”) and warm periods (“interglacials”) in 100,000-year cycles for at least the last million years.

The Relationship Between Global Warming, The Vpd Threshold And Global…

Early episodes of warming were triggered by a small increase in the amount of sunlight reaching the Earth’s surface and then fueled by large emissions of carbon dioxide from the oceans as they warmed (like fissures escaping from warm soda).

The rise and fall of global temperatures during the naturally occurring ice age of the past 800,000 years, ending at the beginning of the twentieth century. NOAA graph by Fiona Martin, based on EPICA Dome C snow data provided by the Paleoclimatology Program of NOAA’s National Centers for Environmental Information.

Global warming today is largely due to the increase in greenhouse gas emissions that humans are adding to the atmosphere by burning fossil fuels. In fact, in the last five years, natural factors (solar forcing and volcanoes) have actually led to a slight cooling of the Earth’s high temperature.

Global warming also differs from past warming in terms of its level. The current increase in average global temperature appears to be occurring faster than at any rate since modern civilization and agriculture in the past 11,000 years or so – and may be faster than any warming period. averaged over the past millions of years.

Who Is Most Likely To Talk About Climate Change?

Temperatures for most of the last 2000 years compared to the average of 1961-1990, based on proxy data (trees, ice cores, cores) and modern thermometer data. Over the past two millennia, it has warmed and cooled, but no warming past seems as big and sudden as recent global warming. NOAA graph by Fiona Martin, adapted from Figure 34.5 of the National Assessment, based on data from Mann et al., 2008.

Regardless of whether you say that climate change is all the side effects of global warming, or that global warming is just one symptom of human-caused change, you’re actually talking about the same basic phenomenon: building up more heat energy. The land of the system. So why do we have two ways of describing what is essentially the same thing?

According to historian Spencer Weart, the use of more than one term to describe different aspects of the same problem traces the progress of scientists’ understanding of the problem.

Since the late 1800s, scientists have speculated that industrialization, driven by the burning of fossil fuels for energy, has the potential to change things. For decades, though, they weren’t sure whether cooling (due to sunlight pollution) or warming (due to greenhouse gases) would dominate.

Global Climate Agreements: Successes And Failures

However, by the mid-1970s, however, more evidence suggested that warming would be greater and that it would be different from a previous natural event that triggered it. The phrase “global warming” emerged to describe that scientific consensus.

Temperature change (degrees per century) from 1900-2014. The gray areas indicate where there is insufficient data to detect long-term trends. NOAA map, based on NOAAGlobalTemp data from NOAA’s National Centers for Environmental Information.

But in recent decades, scientists have increasingly discovered that global warming is not the only effect of excess heat absorbed by greenhouse gases. Other changes – sea level rise, strengthening of the water cycle, stress on plants and animals – are likely to be more important to our daily lives and our economy. In the 1990s, scientists increasingly used “human-induced change” to describe the challenge facing the planet.

Today’s global warming is an unprecedented trend, and it’s driving the tide

What Is Climate Change? (definition, Causes, And Effects)

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