What affects the Earth’s climate or … doomsday 2012 is true?
A lot of changes of the Earth surface (or our environment) occur now. All media overwhelmed information about changes which happen in our days, everyday. Solar radiation, deviations in the Earth orbit, mountain-building and continental drift and greenhouse gas concentration – this is not a complete set of what is happening with our planet! All of that affect to the climate our habitat and changes occur now are very fast. Let see what going on the Earth!
Over the course of millions of years, the motion of tectonic plates reconfigures global land and ocean areas and generates topography.
The position of the continents determines the geometry of the oceans and therefore influences patterns of ocean circulation. The locations of the seas are important in controlling the transfer of heat and moisture across the globe.
Slight variations (100s of miles) in Earth’s orbit lead to changes in the seasonal distribution of sunlight reaching the Earth’s surface and how it is distributed across the planet. Types of orbital variations (changes in the tilt angle of Earth’s axis of rotation, and precession of Earth’s axis), have a large impact on climate.
Volcanic eruptions, geysers, and hot springs, are examples of volcanic processes.
... question of if and why earths climate is changing The roles of man, naturally occurring trends, and earths cycles are considered, and an ... well known are quaternary subdivisions based on the terrestrial record, ocean sediment cores, and ice cores. These methods have been ... eruptions. Volcanic eruptions can further influence climate by their pollution of the oceans.some of the dust will settle into ...
Eruptions, large enough to climate change Affect Plants">affect climate occur on average several times per century, and cause cooling for a period of a few years. The eruption of Mount Pinatubo in 1991, the second largest terrestrial eruption of the 20th century affected the climate substantially. Global temperatures decreased by about 0.5 °C (0.9 °F).
Volcanoes are also part of the extended carbon cycle. Over very long (geological) time periods, they release carbon dioxide from the Earth’s crust and mantle.
Anthropogenic factors – it is human activity affecting the environment changes. In some cases the chain of causality of human influence on the climate is direct and unambiguous (for example, the effects of irrigation on local humidity), while in other instances it is less clear. Various hypotheses for human-induced climate change have been argued for many years. There isn’t scientific consensus on climate change is that human activity is cause for the rapid increase in global average temperatures over the past several decades.
Of most concern in these anthropogenic factors is the increase in CO2 levels.
The ocean is a fundamental part of the climate system. Short-term fluctuations (years to a few decades) and the Arctic oscillation, represent climate variability rather than climate change. Ocean plays a key role in redistributing heat by carrying out a very slow and extremely deep movement of water, and the long-term redistribution of heat in the world’s oceans.
The sun is the predominant source for energy input to the Earth. Both long- and short-term variations in solar intensity are known to affect global climate.
Three to four billion years ago the sun emitted only 70% as much power as it does today. If the atmospheric composition had been the same as today, liquid water should not have existed on Earth. However, there is evidence for the presence of water on the early Earth. Hypothesized solutions to this paradox include a vastly different atmosphere, with much higher concentrations of greenhouse gases than currently exist over the following approximately 4 billion years. The energy output of the sun increased and atmospheric composition changed, with the oxygenation of the atmosphere around 2.4 billion years ago being the most notable changes. These changes in luminosity, and the sun’s ultimate death as it becomes a red giant and then a white dwarf, will have large effects on climate, with the red giant phase possibly ending life on Earth.
... climate change, human-induced or otherwise, is the greenhouse effect. The greenhouse effect occurs when solar radiation which has been absorbed by the earths ... rise one and a half degrees Celsius by the year 2025, and that ocean levels will rise twenty centimeters ... -induced climate change? What preventative measures can be taken against worsening the problem? (Newman) Though it will take years to ...
Solar output also varies on shorter time scales, including the 11-year solar cycle and longer-term modulations. Solar intensity variations are considered to have been influential in triggering the Little Ice Age and some of the warming observed from 1900 to 1950. The cyclical nature of the sun’s energy output is not yet fully understood; it differs from the very slow change that is happening within the sun as it ages and evolves.
However, with high probability, the scientific community believes that the sun and cosmic bodies around the planet have the greatest impact on the climate of the earth. One of the recent statements by NASA to confirm:
“September 26, 2010. Specialists of the NASA warned that in 2013 is possible an unusually strong solar flares, which can pose a threat to electrical and communication systems and bring them out for a long time. This message is much more serious in tone of those who came from NASA so far.
British Defence Secretary Liam Fox compared it with the the possible effects of nuclear bombing.
U.S. scientists believe that solar storms can affect our planet, as lightning, damaging satellites and terrestrial communications infrastructure.
“We know that this can happen in the near future, but do not know how hard it might be the consequences” – said Professor Richard Fisher, NASA. He noted that a strong solar storm can not only disable all electronic devices, and even can change the Earth’s magnetic field. Currently, solar activity is minimal, but in the coming years, it markedly enhanced… “
... was a hot-air engine for the making of solar heat. The suns rays would be concentrated with the use of a ... of our other source of energy. The sun is always here for us. Solar energy is the only energy source that can ... when the sky is cloudy, there is no sun to power any of the solar product. He prefers to stick to electricity ...