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Years later, there were further investigations in a point event very enlightening that would demonstrate what was expected…
Within 3 days after the attacks on the twin towers of the S11, at the close of U.S. airspace, increased the average temperature significantly by 1.2 degrees Celsius throughout the country, (which was not seen for decades) to reduce smoke trails highly polluting reactors left aircraft and clouds form reflective, because it is a residue from the combustion of a hydrocarbon, or a fossil fuel.
Recently at the annual meeting of the American Geophysical Union in Montreal, part of the scientific community for the first time has revealed the seriousness of the matter officially and globally, showing serious concern because only now is becoming aware that the Global dimming is a horrible reality. Read more…
It is a fact that the amount of solar radiation reaching the earth’s surface has been reduced gradually and globally, up to 10% due to air pollution, with unforeseeable consequences for the Earth. This phenomenon has been called Global Dimming.
It is a real phenomenon that, despite having been clearly observed and studied for two decades, very little known to the public, governments and even by the scientific community.
The combustion of fossil fuels like coal and oil, not only generates waste carbon dioxide or other gas responsible for the greenhouse effect, but also released into the atmosphere small particles of ash, soot and compounds of sulfur that reflect sunlight back into space, diminishing in their journey to reach the earth’s surface, causing what is known as “mirror effect” and causing a cooling effect. Read more…
The greenhouse effect has been so transformed by man into a threat to their own safety. The most affected are the poorest, those who are victims of social injustice, economic disadvantaged, those who support more directly the impact of environmental degradation. That is, the greater part of humanity.
Probably accentuate both the intensity and frequency of hurricanes and tropical cyclones in the area, and would extend to latitudes today unaffected or outside the scope of these natural phenomena.
The Earth’s climate is very difficult to predict, because there are many factors to consider: rain, sunshine, wind, temperature … So you can not define exactly what the effects will lead to global warming. But apparently, climate change could be very severe. Read more…
The consequences are not geographically uniform. The hydrological cycle is altered by the increased evaporation of water (which in turn reinforces the warming), is expected to increase rainfall in the high latitudes during winter, and increased drought frequency of 5% at present to 50% by 2050.
A similar rise would mean the contamination of aquifers, the recession of coasts and wetlands, up to 15% of the fertile land of Egypt and 14% of Bangladesh would be flooded by rising maximum. Possibly affecting the stability of tropical forests and biodiversity, due to its high degree of vulnerability to environmental changes in the balance, being replaced by degenerated ecosystems. Read more…
METHANE
The main natural source of CH4 production are the marshes. The CH4 is also produced in the anaerobic decomposition of waste in landfills, in the cultivation of rice in the decomposition of feces of animals in the production and distribution of gas and fuel, and the incomplete combustion of fossil fuels. We propose that the increased concentration of 700 ppb in the period 1000 to 1750 and 1750 ppb in 2000, with a percentage increase of 151% (uncertainty of + / – 25%).
NITROGEN DIOXIDE
The increase of NO2 in the atmosphere is partly derived from increased use of nitrogen fertilizers. NO2 also appears as a byproduct of burning fossil fuels and biomass, and associated with various industrial activities (production of nylon, nitric acid production and vehicle emissions). About 60% of anthropogenic emissions are concentrated in the Northern Hemisphere. It is estimated that the increased concentration of atmospheric NO2 between 270 ppb in the period 1000 to 1750, to 316 ppb in 2000 (an 17 + / -5% increase). Read more…
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CARBON DIOXIDE
The main source of emission of carbon dioxide (CO2) into the atmosphere is the burning of fossil fuels and biomass (natural gas, oil, fuel, wood) in industrial processes, transportation, and household activities (cooking and heating). The forest and grassland fires are also an important source of atmospheric CO2. The atmospheric CO2 concentration rose from 280 ppm in the period 1000 to 1750, to 368 ppm in 2000, representing a percentage increase of 31%. It is estimated that the current concentration is greater than occurred during any period in the last 420,000 years, and is likely to also be the maximum of the last 20 million years. Read more…
In the nineties scientists begin to question again the theory of greenhouse effect, because no reliable data on information and models that are running. You begin to question the scientific basis of the theory, because data on average global temperature.
It is believed that the measurements taken were not correct and that it omitted the data on the role of the oceans. Trends or periods of cooling had no explanation to these data on global warming, and satellites show different temperature record of the set at first.
Begin to give importance to the idea that global warming models have been overestimated in relation to the warming trend of the past 100 years. This caused the IPCC review the data and relationships established from the outset, but this they did react reconsidering whether global warming trend actually exist or not. Read more…
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In the late fifties and early 1960s, Charles Keeling most advanced technology used to produce curves of atmospheric CO2 concentration in Antarctica and Mauna Loa. These curves have been one of the biggest signs and evidence on global warming. The curves show a trend of decreasing temperatures recorded between 1940 and 1970.
While research on ocean sediments shows that there have been no fewer than 32 hot-cold cycles in the last 2.5 million years instead of only four as previously thought. Thus begins the alarm that a new ice age is near. The media and many scientists ignored the scientific data between 1950 and 1960 in favor of global cooling. Read more…
Svante Arrhenius (1859-1927) was a Swedish scientist and first to proclaim in 1896 that fossil fuels could lead to or accelerate global warming. He established a relationship between concentrations of atmospheric carbon dioxide and temperature. He also determined that the average land surface temperature is 15 oC due to the ability of infrared radiation absorption of water vapor and carbon dioxide. This is called the natural greenhouse effect.
Arrhenius suggested that a double concentration of CO2 gas would cause a temperature increase of 5 oC. He along with Thomas Chamberlin estimate that human activities could cause an increase in temperature by adding carbon dioxide to the atmosphere.
This research was carried out in line with a major investigation on whether carbon dioxide could explain the processes of melting ice (large glaciations) on earth. This does not take place until 1987. Read more…
Concept
For species diversity means the variety of species in a region. Such diversity can be measured in many ways, and scientists have not agreed on what the best method. The number of species in a region-its “wealth” in kind “is a measure often used, but a more precise measurement,” taxonomic diversity takes into account the close relationship between one species and others.
For example: an island in which two species live birds and one species of lizard has greater taxonomic diversity than an island where there are three species of birds but no lizards. Read more…
