Continuous and rapid global warming then would directly affects the earth’s natural water cycle. The faster the water cycle contributes to wind directions and also precipitation frequency. Moreover, the warmer the earth will fasten glaciers melting and also the ice-cover at North Pole (can be seen from below Figures). These direct effects of climate change would then cause the following:
More droughts and more floods. When the weather gets warmer, evaporation from both land and sea increases. This can cause drought in areas of the world where the increased evaporation is not compensated for by more precipitation. The extra water vapour in the atmosphere has to fall again as extra precipitation, which can cause flooding other places in the world.
More extreme weather incidents. The warmer climate will most probably cause more heat waves, more cases of violent rainfall and also possibly an increase in the number and/or severity of storms.
Rising sea level. There are two reasons of sea level rises. First, it is because of the melting ice and snow, and second it is because of the thermal expansion of the sea due to temperatue increased. Thermic expansion takes a long time, but even an increase in temperature of two degrees Celsius is expected in time to cause a rise in the water level of almost a metre.
Temperature Changes. Global temperatures have increased by 0.75 °C (1.35 °F) relative to the period 1860–1900, according to the 
instrumental temperature record. This measured temperature increase is not significantly affected by the urban heat island effect. Since 1979, land temperatures have increased about twice as fast as ocean temperatures (0.25 °C per decade against 0.13 °C per decade). Temperatures in the lower troposphere have increased between 0.12 and 0.22 °C (0.22 and 0.4 °F) per decade since 1979, according to satellite temperature measurements. Temperature is believed to have been relatively stable over the one or two thousand years before 1850, with possibly regional fluctuations such as Medieval Warm Period or the Little Ice Age.
instrumental temperature record. This measured temperature increase is not significantly affected by the urban heat island effect. Since 1979, land temperatures have increased about twice as fast as ocean temperatures (0.25 °C per decade against 0.13 °C per decade). Temperatures in the lower troposphere have increased between 0.12 and 0.22 °C (0.22 and 0.4 °F) per decade since 1979, according to satellite temperature measurements. Temperature is believed to have been relatively stable over the one or two thousand years before 1850, with possibly regional fluctuations such as Medieval Warm Period or the Little Ice Age.Disease. Extensions of the geographical range and season for some organisms could result in increases of diseases like malaria, dengue fever and yellow fever. If the temperature increases by 3-5C the number of people potentially exposed to malaria could go up from 45% to 60% of the world population and result in an extra 50-80 million cases a year. Air pollution and exposure to greater extremes in temperature could lead to a greater frequency of asthma and respiratory diseases.
Ecosystems. Scientists predict that composition and range of many ecosystems will shift as species respond to climate change. Research models project that a substantial fraction of the world's forests, and possibly up to two thirds, will undergo major changes. They say the species composition will change and some forest may disappear all together.
Deserts are likely to become more extreme and result in increased soil erosion. Mountain glaciers could retreat and inland wetlands would be affected by global warming with resultant changes in habitat for the current species.
Researchers suggest that there will be a myriad of other changes and even a few surprises. But both the scientists and environment campaigners say human impact on the climate can be reduced by a number of measures.
Deserts are likely to become more extreme and result in increased soil erosion. Mountain glaciers could retreat and inland wetlands would be affected by global warming with resultant changes in habitat for the current species.
Researchers suggest that there will be a myriad of other changes and even a few surprises. But both the scientists and environment campaigners say human impact on the climate can be reduced by a number of measures.
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