Greenhouse effect kili-kolo

1993/05/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

In recent years the Earth is warming and gravity messages have spread frequently. The increase in the concentration of carbon dioxide in the atmosphere by more than 50% in the last hundred years has led to the immediate justification of the news announcing Earth warming.

However, according to a recent report, temperatures in the North Pole have not risen and decreased. To reach this result, 27,000 temperature measurements were analyzed by Russian stations between 1954 and 1990. Therefore, and at least in the short term, the greenhouse effect has been totally discarded.

According to these data, the interactions between sea, ice and atmosphere are not well known. Using laboratory measurements, the estimated reflection capacity for each of these surfaces is: 10% for the sea, 20% for the land and 80% for the ice. But these values obtained in laboratories vary greatly in the poles.

The implementation of linear models that allow long-term forecasts is a risk. In addition, there are still dark swings in the history of climatology. Between 1100 and 1375 the vineyards were cultivated in the United Kingdom thanks to the temperate climate of the northern hemisphere, and in Greenland the Vikings were engaged in agriculture; between 1450 and 1850 there was a small ice age in the northern hemisphere, which caused the Seine River to freeze.

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