AIT In The Classroom
... SPATIAL PERSPECTIVE What we see depends on where we are. Movie producers often use the idea of spatial perspective when making movies. One method used is called “POV” – or Point Of View. This means that the camera (and the audience) will see a scene just as one of the actors sees it. If there a ...
... SPATIAL PERSPECTIVE What we see depends on where we are. Movie producers often use the idea of spatial perspective when making movies. One method used is called “POV” – or Point Of View. This means that the camera (and the audience) will see a scene just as one of the actors sees it. If there a ...
Earth Overshoot Day Contents
... The estimated level of resources and ecosystem services required to support human activities is just over 1.5 Earths. Overshoot has nearly doubled since 1961. In that time, human demand on resources has gone from being within the means of what nature could support to significantly over budget. 4. Po ...
... The estimated level of resources and ecosystem services required to support human activities is just over 1.5 Earths. Overshoot has nearly doubled since 1961. In that time, human demand on resources has gone from being within the means of what nature could support to significantly over budget. 4. Po ...
The carbon cycle in a changing climate
... The excess CO2 that’s accumulating in the atmosphere comes primarily from fossil-fuel combustion. Because carbon14 has a half-life of 5700 years, fossil fuels, which are millions of years old, have lost all their 14C to radioactive decay. Fossilfuel combustion therefore decreases the ratio of radioc ...
... The excess CO2 that’s accumulating in the atmosphere comes primarily from fossil-fuel combustion. Because carbon14 has a half-life of 5700 years, fossil fuels, which are millions of years old, have lost all their 14C to radioactive decay. Fossilfuel combustion therefore decreases the ratio of radioc ...
Climate Educator Guide
... ways organisms can get the carbon they need. They either get it from the air—as plants do—or they get it by eating other living things. All of our food has carbon) • Besides food, how else do people use carbon? (We use carbon-based products like wood, cotton and wool, as well as plastics and other ...
... ways organisms can get the carbon they need. They either get it from the air—as plants do—or they get it by eating other living things. All of our food has carbon) • Besides food, how else do people use carbon? (We use carbon-based products like wood, cotton and wool, as well as plastics and other ...
Changing Planet: Past, Present, Future Lecture 3 – Earth`s Climate
... from Andy Knoll about how life has evolved throughout Earth history and he referred to climate change throughout that time period. What I want to do is explore a little bit, what is it that actually controls the climate of a planet and how does it vary over time. Then we'll look at our current predi ...
... from Andy Knoll about how life has evolved throughout Earth history and he referred to climate change throughout that time period. What I want to do is explore a little bit, what is it that actually controls the climate of a planet and how does it vary over time. Then we'll look at our current predi ...
L`atmosphère et l`espace
... 29. At 11 a.m., Jennifer left her towel and book on the beach to go for a walk. When she came back an hour later, her belongings had been swept away by the tide. She was surprised; the day before, the tide had been high around midnight. Why is it already high again? ...
... 29. At 11 a.m., Jennifer left her towel and book on the beach to go for a walk. When she came back an hour later, her belongings had been swept away by the tide. She was surprised; the day before, the tide had been high around midnight. Why is it already high again? ...
SCIENCE OF SUN PHOTOMETRY
... 2) molecular absorption and Mie scattering by aerosols, which is a quantity that depends only on the mass factor m, which varies with the moment of the day when the measurement take place. The contributions due to ozone (and perhaps other absorbing gases under some circumstances) and aerosols can be ...
... 2) molecular absorption and Mie scattering by aerosols, which is a quantity that depends only on the mass factor m, which varies with the moment of the day when the measurement take place. The contributions due to ozone (and perhaps other absorbing gases under some circumstances) and aerosols can be ...
Lec 18 - Agro Meteorology - Development of e
... surrounds earth on all sides. It is mobile, compressible and expandable. It contains huge number of solid and liquid particles called aerosol. Some gases are permanent atmospheric constituents in fixed proportions to the total gas volume. Others very from place and time to time. The lower atmosphere ...
... surrounds earth on all sides. It is mobile, compressible and expandable. It contains huge number of solid and liquid particles called aerosol. Some gases are permanent atmospheric constituents in fixed proportions to the total gas volume. Others very from place and time to time. The lower atmosphere ...
Modelling Vegetation and the Carbon Cycle as Interactive Elements
... the boundary layer and near-surface variables. At the other extreme, deep-rooted plants and soil microbes together amplify the concentration of carbon dioxide in the soil, possibly accelerating the weathering of silicate rocks which is believed to control the concentration of atmospheric CO on geolo ...
... the boundary layer and near-surface variables. At the other extreme, deep-rooted plants and soil microbes together amplify the concentration of carbon dioxide in the soil, possibly accelerating the weathering of silicate rocks which is believed to control the concentration of atmospheric CO on geolo ...
O 3
... • The change of temperature with altitude – Usually cools with altitude – Inversions – warming with height – Isothermal – no change with height ...
... • The change of temperature with altitude – Usually cools with altitude – Inversions – warming with height – Isothermal – no change with height ...
The Disputed Science of
... One reason for the apparent change in surface temperatures may be the "Urban Heat Island" (UHI) effect by which growing towns and cities generate and trap heat as well as create obstacles to winds. Many urban weather stations are located at airports and the recordings may be influenced by the increa ...
... One reason for the apparent change in surface temperatures may be the "Urban Heat Island" (UHI) effect by which growing towns and cities generate and trap heat as well as create obstacles to winds. Many urban weather stations are located at airports and the recordings may be influenced by the increa ...
Using the Capacity of Forests to Absorb Carbon
... other evidence indicates that they almost certainly have been increasing for well over 100 years. Since about 1800, the content of CO2 in the atmosphere increased nearly 30% (Downing et al., 1992). Rising CO2 levels reflect a global C cycle in which more C is released into the atmosphere (from sourc ...
... other evidence indicates that they almost certainly have been increasing for well over 100 years. Since about 1800, the content of CO2 in the atmosphere increased nearly 30% (Downing et al., 1992). Rising CO2 levels reflect a global C cycle in which more C is released into the atmosphere (from sourc ...
Water and Carbon Cycles 3 days
... “Carbon is life and food, and moves from atmosphere to plants and soils and back in a grand cycle that is sometimes called the circle of life; a circle that encompasses the living and the dead. Soil Carbon Coalition 2013 Since the Industrial Revolution human activity has been dramatically upsetting ...
... “Carbon is life and food, and moves from atmosphere to plants and soils and back in a grand cycle that is sometimes called the circle of life; a circle that encompasses the living and the dead. Soil Carbon Coalition 2013 Since the Industrial Revolution human activity has been dramatically upsetting ...
Pulse response functions are cost-e cient tools to model the link
... response to greenhouse gas forcing requires a substantial eort. The behavior of such models can be characterized by pulse response functions which allows one to build simple substitute models. We have used mixed-layer pulse response functions to describe the surface-to-deep mixing of tracers in the ...
... response to greenhouse gas forcing requires a substantial eort. The behavior of such models can be characterized by pulse response functions which allows one to build simple substitute models. We have used mixed-layer pulse response functions to describe the surface-to-deep mixing of tracers in the ...
Growing trees to sequester carbon in the UK
... levels, and in many areas by enhanced atmospheric N deposition. In the UK, this CO2 and Nfertilization sink could be of the order 2 MtC a–1. All these terrestrial sinks are offset by losses of soil organic carbon in other UK land areas due to increased cultivation, urbanization, drainage of peatland ...
... levels, and in many areas by enhanced atmospheric N deposition. In the UK, this CO2 and Nfertilization sink could be of the order 2 MtC a–1. All these terrestrial sinks are offset by losses of soil organic carbon in other UK land areas due to increased cultivation, urbanization, drainage of peatland ...
What The Science Says: The trend in CO2 at Mauna Loa is
... core data for CO2 levels before 1950. For values after 1950, direct measurements from Mauna Loa, Hawaii were used. ...
... core data for CO2 levels before 1950. For values after 1950, direct measurements from Mauna Loa, Hawaii were used. ...
Satellites, Weather and Climate Lesson plan summary: Modeling the Water
... serious problem because we are removing stored carbon faster than we are sequester carbon back into long term storage. This effect acidity levels in the ocean which further decreases the addition to stored carbon reservoirs ...
... serious problem because we are removing stored carbon faster than we are sequester carbon back into long term storage. This effect acidity levels in the ocean which further decreases the addition to stored carbon reservoirs ...
The Carbon Cycle : Feature Articles
... When we clear forests, we remove a dense growth of plants that had stored carbon in wood, stems, and leaves—biomass. By removing a forest, we eliminate plants that would otherwise take carbon out of the atmosphere as they grow. We tend to replace the dense growth with crops or pasture, which store l ...
... When we clear forests, we remove a dense growth of plants that had stored carbon in wood, stems, and leaves—biomass. By removing a forest, we eliminate plants that would otherwise take carbon out of the atmosphere as they grow. We tend to replace the dense growth with crops or pasture, which store l ...
8-1 THE PREDICTED EFFECTS OF GLOBAL WARMING AND
... light energy converts carbon dioxide into the chemical energy contained in carbohydrates and other biological components (16). A plant must also take in nutrients from the soil, and therefore the composition of the soil is very important to plant growth. By determining how much the composition of th ...
... light energy converts carbon dioxide into the chemical energy contained in carbohydrates and other biological components (16). A plant must also take in nutrients from the soil, and therefore the composition of the soil is very important to plant growth. By determining how much the composition of th ...
Impact of deep-ocean carbon sequestration on atmospheric CO2
... [8] Figure 2a shows the variation in atmospheric CO2 concentration for scenarios 1 and 4. In scenario 4, atmospheric CO2 peaks at 430 ppmv, while in scenario 1 it peaks at 1614 ppmv. Also shown in Figure 2a is the variation in atmospheric CO2 when an amount of carbon equal to the difference in fossi ...
... [8] Figure 2a shows the variation in atmospheric CO2 concentration for scenarios 1 and 4. In scenario 4, atmospheric CO2 peaks at 430 ppmv, while in scenario 1 it peaks at 1614 ppmv. Also shown in Figure 2a is the variation in atmospheric CO2 when an amount of carbon equal to the difference in fossi ...
Document
... • That does not mean that long-term climate change is even less certain. • We cannot predict that July 2035 will be an ‘unusually’ warm month compared to what is typical then, but we are confident that that the 2030s will be warmer than the current decade. • This is based on climate model prediction ...
... • That does not mean that long-term climate change is even less certain. • We cannot predict that July 2035 will be an ‘unusually’ warm month compared to what is typical then, but we are confident that that the 2030s will be warmer than the current decade. • This is based on climate model prediction ...
Changing Pollen Types/Concentrations
... artemisiifolia separated by 15-day increments at ambient and carbon dioxide concentrations of 700 ppm. At heightened carbon dioxide levels, plants from the two later cohorts had greater biomass and overall increased pollen production of 32% and 55%, respectively. Initial cohorts showed similar value ...
... artemisiifolia separated by 15-day increments at ambient and carbon dioxide concentrations of 700 ppm. At heightened carbon dioxide levels, plants from the two later cohorts had greater biomass and overall increased pollen production of 32% and 55%, respectively. Initial cohorts showed similar value ...
A-level Environmental Studies Teacher guide Teacher guide
... reduced areas of ice and snow reduces the albedo of land and sea so less sunlight is reflected and solar heating is increased; methane released from methane hydrate in marine sediments; melting permafrost releases methane gas that was trapped in the ice. These either increase temperatures directly o ...
... reduced areas of ice and snow reduces the albedo of land and sea so less sunlight is reflected and solar heating is increased; methane released from methane hydrate in marine sediments; melting permafrost releases methane gas that was trapped in the ice. These either increase temperatures directly o ...
The Carbon Cycle: Implications for Climate Change and Congress June 25, 2007
... In short, the oceans, vegetation, and soils cannot consume carbon released from human activities quickly enough to stop CO2 from accumulating in the atmosphere. Humans tap the huge pool of fossil carbon for energy, and affect the global carbon cycle by transferring fossil carbon — which took million ...
... In short, the oceans, vegetation, and soils cannot consume carbon released from human activities quickly enough to stop CO2 from accumulating in the atmosphere. Humans tap the huge pool of fossil carbon for energy, and affect the global carbon cycle by transferring fossil carbon — which took million ...
Carbon dioxide in Earth's atmosphere
Carbon dioxide (CO2) is an important trace gas in Earth's atmosphere currently constituting about 0.04% (400 parts per million) of the atmosphere. Despite its relatively small concentration, CO2 is a potent greenhouse gas and plays a vital role in regulating Earth's surface temperature through radiative forcing and the greenhouse effect. Reconstructions show that concentrations of CO2 in the atmosphere have varied, ranging from as high as 7,000 parts per million during the Cambrian period about 500 million years ago to as low as 180 parts per million during the Quaternary glaciation of the last two million years.Carbon dioxide is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and biosphere. The present biosphere of Earth is dependent on atmospheric CO2 for its existence. Plants and other photoautotrophs use solar energy to synthesize carbohydrate from atmospheric carbon dioxide and water by photosynthesis. Carbohydrate derived from consumption of plants as food is the primary source of energy and carbon compounds in almost all other organisms.The current episode of global warming is attributed primarily to increasing industrial CO2 emissions into Earth's atmosphere. The global annual mean concentration of CO2 in the atmosphere has increased markedly since the Industrial Revolution, from 280 ppm to 400 ppm as of 2015. The present concentration is the highest in the past 800,000 years and likely the highest in the past 20 million years. The increase has been caused by anthropogenic sources, particularly the burning of fossil fuels and deforestation. The daily average concentration of atmospheric CO2 at Mauna Loa first exceeded 400 ppm on 10 May 2013. It is currently rising at a rate of approximately 2 ppm/year and accelerating. An estimated 30–40% of the CO2 released by humans into the atmosphere dissolves into oceans, rivers and lakes. which contributes to ocean acidification.