Causes and Effects of Climate Change - Conserve Energy Future
The greenhouse effect is a naturally occurring phenomenon, without which human life would not exist on the earth. /**/ Causes of global warming Many. The effects of global warming include its effects on human health. The observed and projected . It also causes the rise in hay fever, as when the weather gets warmer there is a rise in pollen levels in the air. Projected increases in .. Physical health and mental health have a reciprocal relationship. If the physical health of an. This very real threat has dire consequences for our earth and our health. From the causes to prevention, learn the facts you need know.
Changes in climate may be due to natural causes, e. Detection does not imply attribution of the detected change to a particular cause.
What is the relationship between global warming and the greenhouse effect?
NASA GISS The graph above shows the average of a set of temperature simulations for the 20th century black linefollowed by projected temperatures for the 21st century based on three greenhouse gas emissions scenarios colored lines.
This projection is relative to global temperatures at the end of the 20th century. Global surface temperature for the past 5. The lastyears are expanded in the lower half of the figure image credit: Physical impacts of climate change Seven of these indicators would be expected to increase in a warming world and observations show that they are, in fact, increasing.
Three would be expected to decrease and they are, in fact, decreasing. Each of the different colored lines in each panel represents an independently analyzed set of data. The data come from many different technologies including weather stationssatellitesweather balloonsships and buoys.
Some of the graphs show a positive trende.
Other graphs show a negative trend, e. Evidence of warming is also apparent in living biological systems. With medium confidence see footnote 1IPCC  concluded that human influences had contributed to an increase in heavy precipitation events at the global scale.
Effects of global warming on human health - Wikipedia
Projections of future changes in precipitation show overall increases in the global average, but with substantial shifts in where and how precipitation falls. Extremely hot nights have doubled in frequency.
The area in which extremely hot summers are observed, has increased fold. These changes are not explained by natural variability, and attributed by climate scientists to the influence of anthropogenic climate change. Heat waves with high humidity pose a big risk to human health while heat waves with low humidity lead to dry conditions that increase wildfires. The mortality from extreme heat is larger than the mortality from hurricanes, lightning, tornadoes, floods, and earthquakes together  See also heat wave.
Tropical cyclones At the global scale, the frequency of tropical cyclones will probably decrease or be unchanged. Some impacts will be beneficial—e. Retreat of glaciers since A map of the change in thickness of mountain glaciers since Thinning in orange and red, thickening in blue.
A map that shows ice concentration on 16 Septemberalong with the extent of the previous record low yellow line and the mid-September median extent black line setting a new record low that was 18 percent smaller than the previous record and nearly 50 percent smaller than the long-term — average.
The cryosphere is made up of areas of the Earth which are covered by snow or ice. Assuming high growth in greenhouse gas emissions SRES A2some models projected that Arctic sea ice in the summer could largely disappear by the end of the 21st century.
Effects of global warming on oceans The role of the oceans in global warming is complex. The oceans serve as a sink for carbon dioxide, taking up much that would otherwise remain in the atmosphere, but increased levels of CO 2 have led to ocean acidification.How did climate change affect that extreme weather event?
Furthermore, as the temperature of the oceans increases, they become less able to absorb excess CO 2. The ocean have also acted as a sink in absorbing extra heat from the atmosphere. Ongoing effects include rising sea levels due to thermal expansion and melting of glaciers and ice sheets, and warming of the ocean surface, leading to increased temperature stratification.
Other possible effects include large-scale changes in ocean circulation. Oxygen depletion The amount of oxygen dissolved in the oceans may decline, with adverse consequences for ocean life. Future sea level Trends in global average absolute sea level, — Between andthe rate increased above the previous period to 3. Authors of IPCC AR4 SYR  were uncertain whether the increase in rate from to was due to natural variations in sea level over the time period, or whether it reflected an increase in the underlying long-term trend.
There are two main factors that have contributed to observed sea level rise. The major store of water on land is found in glaciers and ice sheets.
The higher the concentration of green house gases like carbon dioxide in the atmosphere, the more heat energy is being reflected back to the Earth. The emission of carbon dioxide into the environment mainly from burning of fossil fuels oil, gas, petrol, kerosene, etc.
Cause for global warming: Carbon dioxide emissions in million tons per year over the last years. Concentration of carbon dioxide has dramatically increased in the last 50 years Source: Trends for greenhouse gases: Carbon dioxide CO2 and nitrous oxide NOx concentrations in the atmosphere are still increasing. For the other major greenhouse gases, the steady upward trend has been broken.
Graph taken from http: From which sectors do the major greenhouse gas emissions come from? The lower part of the picture shows the sources individually for the gases carbon dioxide, methane and nitrous oxide, respectively.
The increase in the man-made emission of greenhouse gases is the cause for global warming. For the effects of global warming see below. Effects of global warming There are two major effects of global warming: Rise of sea levels by at least 25 meters 82 feet by the year More details about the effects of global warming: Increasing global temperatures are causing a broad range of changes.
Sea levels are rising due to thermal expansion of the ocean, in addition to melting of land ice.