There are 10 significant differences in how the earth systems are operating that show the effects of global warming. Of these 10 seven are where measurements are rising and three where measurements are falling.
•    Falling measurements:
Overall measurements by scientists show that as global warming increases, sea ice is melting, glaciers on land are shrinking and melting and areas that have had permanent snow cover are shrinking as snow and ice melt.
•    Increasing measurements
Sea levels are rising with the additional water running from the land. Increasing heat leads to an increase in the heat content of the oceans which accounts for the rise of the sea surface temperature, and a rise in the air temperature over the oceans. This then leads to increasing humidity of the air and increasing temperature of the lowest levels of the atmosphere, the troposphere. (Though scientists took some time to agree on the latter measurements).
Scientists believe that these changes will be, and indeed are responsible for changes in weather patterns. The impact of having warmer oceans may result in more frequent and more extreme tropical storms and hurricanes, have an impact on wildlife and plants unable to exist in too dry, too hot or too wet conditions. It is predicted by some that more and more major cities will be subject to floods, human health will be affected by the increase in insect vectors and diseases spread by them (such as malaria and dengue fever) and the increase in desert areas cause loss of human life through loss of cattle and crops, unplanned migrations and famine.