The report says evidence on greenhouse gas emissions, temperature and sea-level rises, the melting of ice-sheets, ocean acidification and extreme climatic events suggests the forecasts by the Intergovernmental Panel on Climate Change in 2007 might be too conservative.
The disruption of Earth's climate envelope has caused an acceleration in the loss of Arctic sea ice; the melting of the Greenland and Antarctic ice sheets; ocean acidification; harmful impacts to animals and plants; sea-level rise; an increased risk of floods, heat waves, droughts, wildfires, and intense storms; and threats to national security as well as human health.
In practice, the ice sheets, oceans, waterways and rainforests – essential for the stability of the whole planet – are priced in the same way as luxury goods: their value in the distant future calculated as negligible.
Noting the rapidly shifting climate and the changes seen recently in the poles, the report's authors say much more polar research is needed to address crucial questions regarding ice sheets, oceans circulation, and Arctic peoples.
Seasonal ice velocity is influenced by several key components of the ice sheet-ocean-climate system, including the subglacial environment, surface melt and runoff, and ice-ocean interaction at the ice front (terminus) [ Joughin et al., 2012; Carr et al., 2013].
Ice sheets, sea ice, terrestrial vegetation, ocean temperatures, weathering rates, ocean circulation, and greenhouse gas concentrations are all influenced either directly or indirectly by the atmosphere; however, they also all feed back into the atmosphere, thereby influencing it in important ways.
It's also possible to enjoy Palm Beach on the cheap, as long as you're willing to give up amenities like high-thread-count sheets and ocean views.
The world is already witnessing the effects of climate change, the letter argues, including an increase in extreme weather events, melting of the polar ice sheets and ocean acidification.
Many geoscientists had assumed that great sheets of ocean tectonic plate like the ones underlying the Pacific Ocean today had carried scraps of crust like the volcanic islands of today's Southwest Pacific or even Japan to North America and stuck them to the continent as the plates dove into the interior.
PAGE A6 STUDY FINDS SLOWER ICE MOVEMENT A Dutch study using 17 years of satellite measurements suggests that the movement of Greenland's ice sheet toward the ocean, a process that raises sea levels, is not as rapid as has been feared.
