samedi 4 janvier 2020
∆∆∆ Global temperature changes.webm Auteur : NASA's Scientific | NASA Climate Change 12 févr. 2019
This color-coded map displays a progression of changing global surface temperature anomalies from 1880 through 2018.
Higher than normal temperatures are shown in red and lower than normal temperatures are shown in blue. The final frame represents the global temperatures 5-year averaged from 2014 through 2018. Scale in degree Celsius.
Les observations des satellites de la NASA montrent que la banquise arctique diminue actuellement de 11,5% par décennie, par rapport à la moyenne de 1979 à 2000
NASA/Goddard Scientific Visualization Studio and adapted for NASA’s Global Climate Change website
Declining Arctic sea ice: 1979-2010 Changes in Arctic sea ice are an indicator of climate change.
Observations from NASA satellites show that Arctic sea ice is now declining at a rate of 11.5 percent per decade, relative to the 1979 to 2000 average. Arctic sea ice reaches its minimum extent each September. This time series, based on satellite data, shows the annual Arctic sea ice minimum since 1979. The September 2010 extent was the third lowest in the satellite record. Among the NASA missions that help monitor Earth’s ice are the Gravity Recovery and Climate Experiment (GRACE), Terra and IceSat. Bear in mind there was a chain of undersea volcanos that erupted almost all year in 2007 beneath the ice cap. This is almost never mentioned but it is fairly critical to late in the ice loss in 2007. This time series was created by scientists who study this; they say by 2045, Earth's temperature may increase to effect the melting of ice.
>>> NASA: Climate Change and Global Warming
Libellés : Science / High-Tech