Greenhouse Gases and Global Warming Greenhouse
... sea ice is thinning, and the incidence of extreme weather events is increasing in some parts of the world. The atmospheric concentrations of greenhouse gases have increased because of human activities, primarily due to the combustion of fossil fuels (coal, oil and gas), deforestation and agricultura ...
... sea ice is thinning, and the incidence of extreme weather events is increasing in some parts of the world. The atmospheric concentrations of greenhouse gases have increased because of human activities, primarily due to the combustion of fossil fuels (coal, oil and gas), deforestation and agricultura ...
Unit 1 – The World At Risk
... How to Change Global Climate The ways in which global climate may be influenced include: •changes in Earth’s orbit •variable solar output ...
... How to Change Global Climate The ways in which global climate may be influenced include: •changes in Earth’s orbit •variable solar output ...
Topic 6: The Issue of Global Warming
... 6.1.5 Pollution Management Carbon dioxide is responsible for two-thirds of anthropogenic greenhouse effect. China is probably the most prolific emitter having overtaken the U.S.A. According to the Earth Policy Institute, carbon emissions from fossil fuel burning was 8.38 Gt (109 tonnes)of carbon in ...
... 6.1.5 Pollution Management Carbon dioxide is responsible for two-thirds of anthropogenic greenhouse effect. China is probably the most prolific emitter having overtaken the U.S.A. According to the Earth Policy Institute, carbon emissions from fossil fuel burning was 8.38 Gt (109 tonnes)of carbon in ...
Title of Presentation - PSU Glacier Research
... Alley, R.B. et al, Science 2003 Vol. 299, Figure 2 ...
... Alley, R.B. et al, Science 2003 Vol. 299, Figure 2 ...
Slide 1 - Climate Science Program
... Global temperature trends of the 20C cannot be explained on the basis of natural variation alone Only when the influences of greenhouse gases and sulfate aerosols are included can the trends be explained Models that explain these trends, when projected into the future, indicate a 1.5-6.5oC war ...
... Global temperature trends of the 20C cannot be explained on the basis of natural variation alone Only when the influences of greenhouse gases and sulfate aerosols are included can the trends be explained Models that explain these trends, when projected into the future, indicate a 1.5-6.5oC war ...
TeachingEnglish | Lesson plans
... and climate. Weather is the temperature, precipitation (rain, hail, sleet and snow) and wind, which change hour by hour and day by day. Climate is the average weather and the nature of its variations that we experience over time. The greenhouse effect is the natural process of the atmosphere letting ...
... and climate. Weather is the temperature, precipitation (rain, hail, sleet and snow) and wind, which change hour by hour and day by day. Climate is the average weather and the nature of its variations that we experience over time. The greenhouse effect is the natural process of the atmosphere letting ...
IPCC critique of Draft seeking more clarity slowdown in global
... The slowdown in warming has been acknowledged by the U.K. Met Office, which produces one of the world's three main series of global temperature data, and James Hansen, the former NASA scientist who first brought climate change to the attention of Congress in the 1980s. They say the data is still com ...
... The slowdown in warming has been acknowledged by the U.K. Met Office, which produces one of the world's three main series of global temperature data, and James Hansen, the former NASA scientist who first brought climate change to the attention of Congress in the 1980s. They say the data is still com ...
Slide 1
... Antarctic temperature is measured as the change from average conditions for the period 1850 CE to 2000 CE ...
... Antarctic temperature is measured as the change from average conditions for the period 1850 CE to 2000 CE ...
Introduction - Lunar and Planetary Laboratory
... National Academies of Science in 33 countries and 67 science organizations from various countries (total = 100) support the findings on global warming and its human cause. Five of the 100 are listed below. ...
... National Academies of Science in 33 countries and 67 science organizations from various countries (total = 100) support the findings on global warming and its human cause. Five of the 100 are listed below. ...
Opening remarks to the NELA conference
... 2. The urgency for universal and sustained action by all actors (developed and developing, individual and corporate) against climate change has never been greater. 3. Let me give you some not-so-fun scientific facts: ...
... 2. The urgency for universal and sustained action by all actors (developed and developing, individual and corporate) against climate change has never been greater. 3. Let me give you some not-so-fun scientific facts: ...
ch14notes
... 1) Seafloor sediment – seafloor sediments contain the remains of organisms that once lived near the sea surface. 2) Oxygen isotope analysis – a measurement of the ratio between to isotopes of oxygen: O-16 and O-18. This ratio tells climatologist something the amount of fresh water present and temper ...
... 1) Seafloor sediment – seafloor sediments contain the remains of organisms that once lived near the sea surface. 2) Oxygen isotope analysis – a measurement of the ratio between to isotopes of oxygen: O-16 and O-18. This ratio tells climatologist something the amount of fresh water present and temper ...
Global Warming is Unequivocal IPCC
... Air holds more water vapor at higher temperatures A basic physical law tells us that the water holding capacity of the atmosphere goes up at about 7% per degree Celsius increase in temperature. (4% per F) Observations show that this is happening at the surface and in lower atmosphere: 0.55C since ...
... Air holds more water vapor at higher temperatures A basic physical law tells us that the water holding capacity of the atmosphere goes up at about 7% per degree Celsius increase in temperature. (4% per F) Observations show that this is happening at the surface and in lower atmosphere: 0.55C since ...
Powerpoint presentation template
... challenge of our time” Mary Robinson, Honorary President Oxfam International ...
... challenge of our time” Mary Robinson, Honorary President Oxfam International ...
Slide 1
... SAR: 1995: balance of evidence suggests a discernible human influence on global climate TAR: 2001: new, stronger evidence that most warming observed of last 50 years is due to humans AT4: 2007: most observed increase in global average temps since 1950 is likely due to anthropogenic greenhouse emissi ...
... SAR: 1995: balance of evidence suggests a discernible human influence on global climate TAR: 2001: new, stronger evidence that most warming observed of last 50 years is due to humans AT4: 2007: most observed increase in global average temps since 1950 is likely due to anthropogenic greenhouse emissi ...
Climate Change
... Opponents of Global Warming and its Connection to Greenhouse Gases Say… • IPCC, and other atmospheric scientists, draw most of their conclusions from climate models. These models have major flaws with cloud physics, and don’t necessarily include every kind of climate forcing! • On that note, climat ...
... Opponents of Global Warming and its Connection to Greenhouse Gases Say… • IPCC, and other atmospheric scientists, draw most of their conclusions from climate models. These models have major flaws with cloud physics, and don’t necessarily include every kind of climate forcing! • On that note, climat ...
The water vapor problem
... Tilt: a 41,000 year cycle where the Earth’s axis has a tilt that varies from ~25º to ~22º. Eccentricity: a 100,000 year cycle where the Earth’s elliptical orbit varies from near circular (with an eccentricity close to 0) to distinctly elliptical (with an eccentricity close to ...
... Tilt: a 41,000 year cycle where the Earth’s axis has a tilt that varies from ~25º to ~22º. Eccentricity: a 100,000 year cycle where the Earth’s elliptical orbit varies from near circular (with an eccentricity close to 0) to distinctly elliptical (with an eccentricity close to ...
Climate Change Science Update
... energy from about four atom bombs per second going into the earth’s atmosphere compared to 50-100 years ago. The influence of greenhouse gases depend on their warming potential and the amount in the atmosphere. Twenty percent of the CO2 we put out now will still be there in 1000 years. It is that lo ...
... energy from about four atom bombs per second going into the earth’s atmosphere compared to 50-100 years ago. The influence of greenhouse gases depend on their warming potential and the amount in the atmosphere. Twenty percent of the CO2 we put out now will still be there in 1000 years. It is that lo ...
Top Ten Things You Need to Know about Global Warming
... second is methane, released from rice paddies, both ends of cows, rotting garbage in landfills, mining operations, and gas pipelines. Third are chlorofluorocarbons (CFCs) and similar chemicals, which are also implicated in the separate problem of ozone depletion. Nitrous oxide (from fertilizers and ...
... second is methane, released from rice paddies, both ends of cows, rotting garbage in landfills, mining operations, and gas pipelines. Third are chlorofluorocarbons (CFCs) and similar chemicals, which are also implicated in the separate problem of ozone depletion. Nitrous oxide (from fertilizers and ...
The future under global warming – impacts on Australia
... rainfall, increased nutrient and sediment loading and increased erosion. There are much greater pressures on wetlands than climate change, however climate change could be the straw that breaks the camel’s back. ...
... rainfall, increased nutrient and sediment loading and increased erosion. There are much greater pressures on wetlands than climate change, however climate change could be the straw that breaks the camel’s back. ...
The policy implications of cumulative greenhouse gas emissions or
... • Burn a set amount of coal, oil, or gas and you get a set amount of CO2 (basic chemistry). • Greenhouse gases absorb outgoing infrared radiation. • Planets absorbing more radiation than they emit will warm. ...
... • Burn a set amount of coal, oil, or gas and you get a set amount of CO2 (basic chemistry). • Greenhouse gases absorb outgoing infrared radiation. • Planets absorbing more radiation than they emit will warm. ...
Attribution of recent climate change
Attribution of recent climate change is the effort to scientifically ascertain mechanisms responsible for recent changes observed in the Earth's climate, commonly known as 'global warming'. The effort has focused on changes observed during the period of instrumental temperature record, when records are most reliable; particularly in the last 50 years, when human activity has grown fastest and observations of the troposphere have become available. The dominant mechanisms (to which recent climate change has been attributed) are anthropogenic, i.e., the result of human activity. They are: increasing atmospheric concentrations of greenhouse gases global changes to land surface, such as deforestation increasing atmospheric concentrations of aerosols.There are also natural mechanisms for variation including climate oscillations, changes in solar activity, and volcanic activity.According to the Intergovernmental Panel on Climate Change (IPCC), it is ""extremely likely"" that human influence was the dominant cause of global warming between 1951 and 2010. The IPCC defines ""extremely likely"" as indicating a probability of 95 to 100%, based on an expert assessment of all the available evidence.Multiple lines of evidence support attribution of recent climate change to human activities: A basic physical understanding of the climate system: greenhouse gas concentrations have increased and their warming properties are well-established. Historical estimates of past climate changes suggest that the recent changes in global surface temperature are unusual. Computer-based climate models are unable to replicate the observed warming unless human greenhouse gas emissions are included. Natural forces alone (such as solar and volcanic activity) cannot explain the observed warming.The IPCC's attribution of recent global warming to human activities is a view shared by most scientists, and is also supported by 196 other scientific organizations worldwide (see also: scientific opinion on climate change).