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OPINIONS ON CLIMATE CHANGE News, Science Dates, Graphics, Comparisons, Theories and Really Climate Values in changing of our Nature and Our opinions and studies which matters. HUMAN ACTIVITY

The constant growth of the average temperature of the planet since the middle 20th century is caused by emissions of greenhouse gases caused by humans; General warming observed in the atmosphere and the ocean, and reducing ice mass confirms that it is "extremely unlikely" that climate changes in the last 50 years have been caused only by natural factors; "Past and future emissions of carbon dioxide will contribute to warming and increasing sea levels over the next planet a thousand years", due to persistence in the atmosphere of greenhouse gases HEATING VALUES

11 of the last 12 years included in the ranking of the hottest years since 1850, the year of the first meteorological measurements; Heating trend has accelerated in recent years: 0.74 degrees Celsius in the past one hundred plus years (1906-2006) compared to 0.6 degrees in the period 1901-2000 (according to previous report, published in 2001); At the end of the 21st century, temperatures going to be higher by 1.8 to 4 degrees Celsius compared to the period 1980-1999, these estimates are average values that are part of a broader trend growth of between 1.1 and 6.4 degrees (1.4 to 5.8 degrees in the previous report in 2001); Warming tends to reduce the absorption capacity of carbon dioxide by soil and oceans, rising to the same degree of emissions produced by the population that stays in the atmosphere;


Oceans Weather records since 1961 demonstrates that the average temperature of Ocean rose to a depth of 3,000 meters and the ocean has absorbed more than 80 percent of the added heat of the climate system; Heat water or produce volume expansion, so the oceans could rise by 0.18 to 0.59 meters by the end of the century (compared to 1980-1999); An average warming of 1.9 to 4.6 degrees Celsius compared to preindustrial era values will cause complete disappearance of ice from Greenland, with the result rising sea levels by about 7 meters EFFECTS

The most significant warming in the areas of land will be released before the water surface or at high latitudes, while in the southern Indian Ocean and in parts of the North Atlantic will be smaller effects; Simulation exercises provide for a reduction of ice in the Arctic and Antarctica all climate scenarios, in some cases, the ice would disappear almost entirely in the Arctic Ocean in the second half of the 21st century;

Extreme: Is "very likely" that the values of thermal extremes, heat waves and heavy rains will continue to be more frequent; Is "credible" that future tropical cyclones (hurricanes and typhoons as well) become more powerful; Increase the amount of precipitation is "very likely" to high latitudes, while their reduction are likely in most subtropical regions; Cluj-Napoca,Romania Our students discussing


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