Global Warming
Know more about Global Warming
Global warming is the increase in the average temperature of the Earth's near-surface air and the oceans since the mid-twentieth century and its projected continuation.
Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 100 years ending in 2005.
The Intergovernmental Panel on Climate Change (IPCC) concludes that anthropogenic greenhouse gases are responsible for most of the observed temperature increase since the middle of the twentieth century, and that natural phenomena such as solar variation and volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect afterward.
These basic conclusions have been endorsed by more than 40 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries.
In Costa Rica
According to the latest global forecast in the next 90 years the country's temperature could rise by 3 degrees Celsius and sea level rise is one more than the current meters.
That threat of death by 30% of the species and implies that the country's 160,000 plants and animals could disappear. Many of the amphibians, reptiles, and corals do not survive the rising temperatures.
With the loss of coral, coasts will be more vulnerable to hurricanes and many marine species lose their habitat. Temperature increase also kill reptiles as it no longer reproduce. First, the population will stagnate because only individuals born of one gender.
Worst part was wearing the amphibians, animals more vulnerable to changes in its ecosystem. These frogs, toads and salamanders are used by ecologists as a "thermometer" of the environment, since they are the first to suffer the consequences of changes in their habitat.
Birds:
Overall, in Costa Rica there are approximately 870 species of birds.
This has led to more than 221 species of migratory birds that fly through our area are changing their life cycles. Even, some lose their direction of flight due to these changes.
Marine Life:
Increase in ocean level will impact on several species. If the sea is moving outward, the beaches will be lost and with them, the nesting sites of five species of marine turtles in the world. That would be a death sentence for the leatherback in the Pacific, which lost 90% of its population and that nest here for 60 years.
Some economists have tried to estimate the aggregate net economic costs of damages from climate change across the globe. Such estimates have so far yielded no conclusive findings; in a survey of 100 estimates, the values ran from US$-10 per tonne of carbon (tC) (US$-3 per tonne of carbon dioxide) up to US$350/tC (US$95 per tonne of carbon dioxide), with a mean of US$43 per tonne of carbon (US$12 per tonne of carbon dioxide).
One widely publicized report on potential economic impact is the Stern Review. It suggests that extreme weather might reduce global gross domestic product by up to one percent, and that in a worst-case scenario global per capita consumption could fall 20 percent. The report's methodology, advocacy and conclusions have been criticized by many economists, primarily around the Review's assumptions of discounting and its choices of scenarios. Others have supported the general attempt to quantify economic risk, even if not the specific numbers.
Preliminary studies suggest that costs and benefits of mitigating global warming are broadly comparable in magnitude.
According to United Nations Environment Programme (UNEP), economic sectors likely to face difficulties related to climate change include banks, agriculture, transport and others.Developing countries dependent upon agriculture will be particularly harmed by global warming.
