Apply Your Skill
Design Using what you have learned in this lab and in the chapter, develop a plan for stopping the pollution plume. Make a map showing where your plan will be implemented. Indicate the sites where water quality will be monitored regularly. y , i -. - -Uffefi l - . X A i 11 i L - f. SEM I VOLE CO _ ---------EflDTtp CO ,L -f' gm- r . n 1 . 1 J i - . ar-t . t TTJ- _ - rr .- r' .nr 1. , .,. . rjji H ' . , -------i IV . .' ' ' - _ I 1 , HiiurRH--.J j -T _ _ . ' U Download quizzes, key terms, and...
DISCUSSION TOPICS Jfn
Explain the respective roles of the earth's orbit about the sun and the tilt of the axis of rotation for global climate. Explain the differences between the transmission of solar and terrestrial radiation by the atmosphere. What is the relative importance of incoming solar radiation, turbulent energy exchanges and other factors in determining local daytime temperatures Consider the role of clouds in global climate from a radiative perspective. What effects do ocean currents have on regional...
Solar Collector Costs Efficiencies and Suppliers
Swimming pool and rooftop water heaters can convert solar energy into heat with an efficiency of 50-70 . The efficiencies of electricity-generating solar collector systems are much lower. They operate at efficiencies from 5 to about 30 . Thin-film solar shingles used on residential roofs today are only about 5 to 8 efficient. The efficiency of solar towers is also about 5 . Photovoltaic PV cell efficiencies range from about 5 for amorphous silicon A-Si designs, 9 to 10 for CdTe modules, and 13...
The Grid
The final element in the electricity supply 'jig-saw' is transmission and distribution. In the electricity supply industry transmission and distribution are viewed as quite separate activities. In the industry, when they talk of transmission, the bulk transfer of electrical power from several power stations to towns and cities is being considered. Typically, power transmission is between one or more power plants and several substations near populated areas. The transmission system allows...
Insurance Financial Impacts and Assistance
Our homes are generally one of the most expensive investments we will ever make. Extreme weather conditions as a result of climate change are increasing the risks of our investments being destroyed. Most of this book has been about preventing or limiting damage to our homes by understanding the potential effects of climate change and the extra stresses that are developing as a result. Unfortunately some conditions will always exceed our ability to prepare our buildings to survive them. For...
Run of river systems
Many rivers have a flow rate in excess of 0.75 m per second which makes them eligible to power so-called run of river generators. The conventional method is to create a dedicated channel which WPI turbine courtesy of CADDET, issue 1 04 accommodates a cross-flow generator which is a modern version of a water wheel or a 'Kaplan' turbine which has variable blades. A Norwegian company, Water Power Industries WPI , has developed a water turbine on floats that has a vertical axis rotor fitted with...
Visualizing Springs
Perched water table Layer of impermeable clay A spring forms where a permeable layer and impermeable layer come together. A layer of impermeable rock or clay can create a perched water table. Springs can result where groundwater emerges from a perched water table. Some springs form where a fault has brought together two different types of bedrock, such as a porous rock and a non-porous rock. Karst springs form where groundwater weathers through limestone bedrock, and water in the underground...
By Sam Hitz and Joel Smith Stratus Consulting Inc United States
We surveyed the literature to assess the state of knowledge with regard to the presumed benefits or avoided damages of reducing atmospheric concentrations of greenhouse gases to progressively lower levels. The survey included only published studies addressing global impacts of climate change studies that only addressed regional impacts were not included. The metric we used for change in climate is increase in global mean temperature GMT . The focus of the analysis centred on determining the...
CAREERS IN EARTH SCIENCE Yft
Hydrogeologist Earth scientists who map groundwater are called hydrogeologists. They use field methods, maps, and aerial photographs to determine where ground-water is located. To learn more about Earth science careers, visit glencoe.com. Overuse Groundwater supplies can be depleted. If groundwater is pumped out at a rate greater than the recharge rate, the groundwater supply will decrease and the water table will drop. This is happening to the Ogallala Aquifer. Its water, used mostly for...
Proxy Methods
A variety of independent tests of the modeling predictions as to levels of Phanerozoic atmospheric CO2 are available. Methods include determining 1 the S13C of carbonates in paleosols 2 the stomatal density Figure 5.14. Input function for volcanic degassing of CO2 and for CO2 formed by the oxidation of CH4 from methane hydrate decomposition at the Permian-Triassic boundary. After Berner, 2002. Figure 5.14. Input function for volcanic degassing of CO2 and for CO2 formed by the oxidation of CH4...
Heat islands and urban domes
Air escaping from heated buildings, atmospheric particles absorbing infrared radiation at night, the reduction in wind speed, and the heat from thousands of engines combine to make the city into an island of warmth surrounded by a cool, rural sea. It is a heat island. During the day the temperature rises rapidly. On a sunny day in summer it may rise by as much as 31 F 17 C between dawn and the middle of the afternoon. It falls again at night, but in the early part of the night the city center...
Differential temperature controller
One of the most important components of an active solar energy system is the temperature controller because a faulty control is usually the cause of poor system performance. In general, control systems should be as simple as possible and should use reliable controllers, which are available nowadays. One of the critical parameters that need to be decided by the designer of the solar system is where to locate the collector, storage, over-temperature, and freezing-temperature sensors. The use of...
Limitations Of Expert Opinion
That experts can and often do disagree on matters pertaining to their areas of expertise is obvious. Among the topics that relate to environmental change, none has evoked more debate among experts than that of greenhouse wanning. Although many perhaps most Earth and atmospheric scientists consider the possibility of gradually increasing temperature to be a real and serious threat, the opposite opinion has been strongly expressed and a spirited debate has occurred Ellsaesser, 1991 Kerr, 1989...
In search of plural visions
What the movements and their critique of science sought was not antiscience but a plural vision that allowed for both the wisdom of normal science and the vision of the eccentric, the dissenter, the marginal, the vulnerable and alternative world-views. The playfulness, the new concepts and new reciprocity between science and social worlds created through novelty by combination, was extended by grass-roots politics and philosophers to a wider domain. They forced the democratic imagination to...
Australias Coral Crisis
I did not see some of the worst bleaching effects in the Keys, but 8 months later I get an opportunity to investigate coral bleaching and its links to climate change as part of a magazine assignment in Australia and Fiji. It will turn out to be a challenging job full of too much travel, miscommunications, political conflict, a dive in which my air cuts off, and another in which I cut my hand on coral, resulting in the need for hand surgery. Still, given my paradise-rich itinerary, I receive...
Dig for Dinosaurs
What is it like to scuba dive with H crocodiles in the Okavango delta Or fly in a bush plane L over the African continent Or dig for dinosaurs in China The National Geographic Expeditions allow you to share in the excitement and adventures of explorers, scientists, and environmentalists as they venture into the unknown. Each Expedition takes you on a journey that enriches your learning about our dynamic planet. 892 Tracing the Human footprint Use with Chapter 2 898 Stoic of Rock Use with...
Social movements and the making of technoscience
In recent decades social movements have also served to reorient science and technology, as well as politics and business, into alternative directions. Out of the anti-imperialist and student movements of the 1960s and the feminist and environmentalist movements of the 1970s and 1980s have emerged a range of alternative ideas about knowledge, in form, content, and meaning, that has given rise to new sciences and technological programs Eyerman and Jamison 1991 Rose 1994 . Out of critique have...
Snow remote sensing
Remote sensing of snow involves detection and quantification of falling snow, assessment of snowcover on the land, and the snow water equivalent SWE of the snowpack. Detection of falling snow and assessment of the snow-pack require different approaches and remote sensing strategies. Quantification of falling snow has real-time applications for transportation, construction, agriculture, and commerce, and snowcover data are used for flood forecasting, water resources management and planning, and...
The Path to Suicide
Of all forms of energy in use today, oil has the lion's share. It accounts for 40 percent of our overall energy consumption, and over 90 percent of the energy we use for transportation. Essentially everything in our modern lives is made with some contribution from oil. For example, oil and gas are embedded into every aspect of making a common shirt from the feedstock to making nylon or rayon, to running the looms, to transporting the shirt to a store, to the transportation used to take the...
United States of America A Snapshot of US Practices
Adam Lindgreen, Valerie Swaen, and Wesley J. Johnston Abstract Organizations increasingly are embracing the concept of corporate social responsibility CSR . In this study CSR refers to actions that further some social good, beyond the interests of the firm and that which is required by law McWilliams et al., 2006 . Specifically, CSR consists of economic citizenship, legal citizenship, ethical citizenship, and discretionary citizenship Maignan, 1997 Maignan and Fer-rell, 2001 Maignan et al.,...
Temporal and spatial variation characteristics of soil moisture
The temporal and spatial variations of soil moisture are analyzed using in-situ soil moisture data from 98 agricultural meteorological gauge stations in Eastern China for the years 1981 - 1991. The data includes gravimetric soil moisture, field capacity, bulk density of soil and wilting level. Distributions of gauge stations for soil moisture measurement are shown by Fig. 7.3, in which F represents non irrigation and T for irrigation. Irrigation stations will not be used in analysis in order to...
Other Economic Variables
The model includes many other economic and environmental variables that are part of the integrated assessment analysis. Figure 5-9 shows per capita consumption for a representative set of scenarios, while Figure 5-10 shows the historical and projected carbon-output ratio. Two points about the trends should be noted. First, the model assumes continued rapid economic growth in the years ahead, although with slightly slower growth than over the past four decades. The average growth in global per...
Chinas position on climate change
On May 13, 1998, at a hearing before the US House of Representatives' Committee on International Relations entitled The Kyoto Protocol Problems with US Sovereignty and the Lack of Developing Country Participation, Benjamin Gilman, chairman of the committee, characterized China's position on climate change at the Kyoto Conference as a policy of 'Three Nos' no obligations on China, no voluntary commitments by China, and no future negotiations to bind China US House 1998 . Despite its political...
State Sovereignty
State sovereignty is one of the oldest principles of general international law. Its meaning is that a state has exclusive jurisdiction on its territory. In other words, the state is the only authority that can adopt legal rules for its territory, has executive power, and competence to judge litigation. This principle is applicable in environmental matters, but with certain restrictions concerning the preservation of the environment. Principle 21 of the Stockholm Declaration makes it explicit...
The Motorisation Of America
The motorisation of American cities, which was carried out in a number of discrete stages between 1925 and 1960, is conventionally explained by US economists and historians as the consequence of sovereign consumers exercising their freedom of choice. As one former presidential science adviser put it, 'Society decided it wanted the automobile, and it bought the automobile.'8 As Americans got richer, so the argument goes, their personal preference for the private motor car over the public...
The Case Of China
Over the last two decades, China has demonstrated a development strategy that has allowed for a significant decoupling of economic growth from energy use. The energy intensity of the Chinese economy hasbeen reduced by approximately fifty percent during the last twenty years, thereby significantly reducing costs, imports, and environmental degradation. Large opportunities to continue to improve energy intensity exist. The current development strategy of China is known as the 3E strategy and...
The Nature of Common Resources
From one perspective, any system in which the use of a resource by one party causes harm to another can be viewed as a commons. Those harmed necessarily have a moral stake in the use or conservation of the resource, even if they don't have the ability to exploit it in kind and thus to cause a symmetric harm. However, it is when each party can cause harm to the others that we have a classic commons problem. In a commons, individuals typically gain much more from their use of the resource than...
Phase III the EU establishes legal competence
Lacking either a legal basis or any truly structured sense of direction, the Commission approach to environmental issues until the mid-1980s was piecemeal and reactive, with a tendency to address problems on an ad hoc basis that depended largely on a combination of opportunism and the personal preferences of DGXI officials or incumbent environment Commissioners. The turning point came in 1987 when environmental protection was finally recognized as part of the legal competence of the Community...
Global Environmental Threats
Biotic impoverishment and resource scarcity Toxification and threats to public health Source From James Gustave Speth and Peter M. Haas, Global Environmental Governance 2006 , 19 Source From James Gustave Speth and Peter M. Haas, Global Environmental Governance 2006 , 19 scientist in the British government believe that climate change is the most severe problem the world faces, bar none.5 Scientists know that the greenhouse effect is a reality without the naturally occurring heat-trapping gases...
Influences on River Responses
High-magnitude rainfalls delivered by tropical cyclones normally produce extraordinarily big discharges in Pacific island rivers Figs. 9.4 and 9.5 . The nature of a river's response depends primarily on three groups of influences, which are discussed below. The first group are the meteorological characteristics of an individual tropical cyclone, such as the organisation of its cloud bands, speed of movement and the corresponding patterns in precipitation. The second set of factors are those...
Thermaldynamical Effects Of The Tibetan Plateau On The East Asian Monsoon
GUOXIONG WU, QIONG ZHANG, ANMIN DUAN and JIANGYU MAO 1. Introduction The Tibetan Plateau Qinghai-Xizang Plateau extends over the latitude-longitude domain of 25-45 N, 70-105 E, with a size of about one quarter of the Chinese territory and a mean elevation of more than 4,000 m above sea level. Surface elevation changes rapidly across the boundaries of the Plateau, especially the southern boundary. Strong contrasts exist between the western and eastern parts of the Plateau in land surface...
Colin Woodard
When the Dutch want to spend a summer's day by the sea, not a few drive up to the quiet village of Petten, perched on Holland's North Sea coast. Some stay in tidy cottages huddled within earshot of the roaring surf others smell the sea air or watch seabirds from their hotel balconies or the windows of the handful of shops and restaurants near the hamlet's main intersection. But from town, nobody can get so much as a glimpse of the nearby sea. As far as the eye can see, Petten's ocean view is...
Government By the Industry For the Industry
Vice President George Bush sat in his chair across from four Monsanto executives. They had come to the White House with an unusual request. They wanted more regulation. They were venturing into a new technology, the genetic modification of food, and they were actually asking the government to oversee their emerging industry. But this was late 1986. Ronald Reagan was president and the administration was busily deregulating business. Bush needed convincing. We bugged him for regulation, said...
The American Century Three Phases
A historical review of the American Century can be traced back through distinct economic periods in the post-World War II period. F. William Engdahl offered an exemplary model in which he divides this postwar period of US supremacy into three separate phases. The following constructs including the three phases of US dominance is liberally borrowed from Engdahl's online essay, The American Century Iraq and the Hidden Euro-dollar Wars,31 also chronicled in his updated book, The Century of War...
An Automatic Correction
Another reason for concern about the growth coming our way is the absence of adequate natural self-correcting forces within the economy. One area of hope in this regard has been the natural evolution of technology. The economy of the future will not be identical to that of the past because technology is changing. It is creating opportunities to reduce materials consumed and wastes produced per unit of output it is opening up new areas and new products that are lighter, smaller, more efficient....
To Grow or Not To Grow
Does it make sense to challenge economic growth directly Most people would say no, and they fall generally into two camps. First, there are those who see economic growth as an unalloyed good. Recall from Chapter 1 the worldview of Market World. Those with this Promethean and cornucopian perspective have faith in free markets and competition to resolve problems. They tend to see nature as boundless and thus unlikely to exercise significant constraints over human action. Economic growth, in their...
Global warming potential
The concept of a radiative forcing was introduced in Chapter 2. This is much easier to assess than the climatic response because of the feedbacks within the climate system. Radiative forcing can provide a simple measure of how important each greenhouse gas is relative to the others although the concept of radiative forcing has limitations when considering the full implications of climate change. Therefore there has been great emphasis in the various IPCC reports on determining the radiative...
Experiments
Sedimentary deposits of zeolite are widespread in the Idjevan clinopilolite and Shirak mordenite regions of Armenia. The natural zeolites clinop-tilolite and mordenite were dehydrated at 110oC, and prepared by the heated pile method, using 0.5 and 1 N solutions of CaCl2. Clinoptilolite modified by catamine-AB was prepared according to Torosyan et al. 2000 . Adsorptive isotherms were determined for the equilibrium status of water containing chlorine compounds or pesticides in concentrations of...
Trade winds and Hadley cells
Air over the equator is heated strongly by contact with the warm surface. The warm air rises all the way to the tropopause. There, trapped beneath the tropopause, it moves away from the equator. Cooler air flows toward the equator at low level, to take its place. Moving air tends to turn in a circle. This is called vorticity and it is why the water usually forms a spiral, or vortex, when it flows out of a bathtub. As the cool air moves toward the equator its vorticity swings it to the right in...
Climate change
The central concern in this chapter is to provide a broad background picture of the scientific, political and economic issues relating to the enhanced Greenhouse Effect. This initiates the exploration of links between different disciplinary perspectives and some common problems they share. As the structure of the book shows, understanding complex environmental problems requires moving from scientific knowledge of physical relationships and impacts to socio-economic variables in order to...
Building to Last
In order for buildings to withstand problems associated with climate change, they must first be mechanically fit. By that I mean they need to be structurally sound and able to provide for our shelter and protection without being harmed by the elements. Using a body analogy, by German building biology practitioner Dr. Anton Schneider, our homes need strong bones and joints framing and fasteners . The building's skin exterior surfaces needs to be able to keep out the rain snow and wind, while...
Scientist of the Decade CarlGustav Rossby
Born on December 28, 1898, in Stockholm, Sweden, the meteorologist Carl-Gustav Rossby was one of the most influential atmospheric scientists in the 20th century. After earning his filosofie kandidat that is, bachelor's degree at the University of Stockholm in 1918 with specializations in mathematics, mechanics, and astronomy, Rossby left Stockholm and moved to Norway to join the Bergen School. He worked with the Bjerkneses on the development of the polar front and air mass theories until 1921....
Suns Radiation
The amount of radiant energy received or emitted every second at a surface of one square metre is properly known as the radiance, though we lazily refer to it simply as the 'radiation'. The radiance on a surface facing the Sun, just outside the Earth's atmosphere, is called the solar constant, equal to 1,367 W m2. This is more than the output of a kilowatt electric heater on Figure 2.4 The solar elevation at various times of day and in various months, at Sydney 34 S . For instance, the Sun is...
Floating Solar Islands
A Swiss-designed artificial island is planned near the equator Figure 1.41 in the Gulf state of Ras Al-Khaimah. A 100-m diameter prototype is under construction. It is one tenth of the size of the planned solar island. The solar concentrators will convert circulating water into steam, which will produce both electricity and H2. The electricity will be used for plant operation, and the H2 will be sold as fuel. The designers feel that the plant will be cost competitive Solar island floating on an...
Overcoming Barriers To Green Buildings
Some of the barriers to green building performance have little to do with cost and a lot to do with how engineers and architects have become accustomed to working with each other, much like brothers and sisters in the same family who want nothing to do with each other during adolescence, but who become good friends later in life. Dan Nall is senior vice president of Flack Kurtz, one of the leading building engineering firms in the United States. Here's his take on the situation. Engineers don't...
Genetically Modified FoodGenetically Modified Organisms
As for the future, your task is not to foresee it, but to enable it. Antonie de Saint-Exupery, 1948, The Wisdom ofthe Sands In his chapter on orthobiosis, Metchnikoff Ref. 42 in Chapter 2 lauds Luther Burbank, an outstanding American botanist, for his improvement of useful plants. Burbank, he tells us, cultivated great numbers of fruit trees, flowers, and all kinds of plants, with the object of increasing their utility. He goes on to say that He has modified the nature of plants to such an...
Demand for Export Function
Where X quantity of export hx price elasticity of demand for export with hx lt 0 P home price of tradable goods exports or imports P foreign price of tradable goods x income elasticity of demand for exports E exchange rate H F H home country's currency F foreign country's currency Y income of foreign country A a constant. Taking natural the log of 23.1 and total differential of both sides, we have dln X hx dln P - dln P - dln E xdln Y 23-2 where x percent change in export quantity p percent...
Problems In Quantifying Risk
Quantitative risk assessment is an imprecise and controversial activity Cohrssen amp Covello, 1989 Fischhoff, 1977 Krimsky amp Golding, 1991 Primack, 1975 Sjoberg, 1980 . It is an example of the problem of estimation of probabilistic variables more generally. When frequency-of-incidence data exist in sufficient quantity, they may be used as the basis for risk estimates. This approach is effective for certain purposes, such as the setting of premiums for insurance against specific eventualities....
HighTemperature IndirectSolar Thermal Hydrogen Processes
More recently, higher temperature processes have been considered at T gt 2000 K , such as two-step thermal chemical cycles using metal oxide reactions.2 The first step is solar the endothermic dissociation of the metal oxide to the metal or the lower-valence metal oxide. The second step is non-solar, and is the exothermic hydrolysis of the metal to form H2 and the corresponding metal oxide. The net reaction is H2O H2 0.5 O2, but since H2 and O2 are formed in different steps, the need for...
Drought famine and desertification
In recent years, the world's attention has been drawn time and again to the Third World nations of Africa, by the plight of millions of people who are unable to provide themselves with food, water and the other necessities of life. The immediacy of television, with its disturbing images of dull-eyed, pot-bellied, malnourished children, skeletons of cattle in dried-up water courses, and desert sands relentlessly encroaching upon once productive land, raised public awareness to unexpected...
