منابع مشابه
Arctic tropospheric warming amplification?
Relative rates of temperature change between the troposphere and surface, and the mechanisms that produce these changes, have long been a contentious issue. Graversen et al., predicated upon the ERA-40 reanalysis, report polar tropospheric amplification of surface warming and attempt to explain this finding dynamically. Here we show (1) that data from satellites and weather balloons indicate th...
متن کاملEvidence of high-elevation amplification versus Arctic amplification
Elevation-dependent warming in high-elevation regions and Arctic amplification are of tremendous interest to many scientists who are engaged in studies in climate change. Here, using annual mean temperatures from 2781 global stations for the 1961-2010 period, we find that the warming for the world's high-elevation stations (>500 m above sea level) is clearly stronger than their low-elevation co...
متن کاملThe emergence of surface-based Arctic amplification
Rises in surface and lower troposphere air temperatures through the 21st century are projected to be especially pronounced over the Arctic Ocean during the cold season. This Arctic amplification is largely driven by loss of the sea ice cover, allowing for strong heat transfers from the ocean to the atmosphere. Consistent with observed reductions in sea ice extent, fields from both the NCEP/NCAR...
متن کاملRevisiting the evidence linking Arctic Amplification
Previous studies have suggested that Arctic Amplification has caused planetary-scale 3 waves to elongate meridionally and slowdown , resulting in more frequent blocking pat-4 terns and extreme weather. Here, trends in the meridional extent of atmospheric waves 5 over North America and the North Atlantic are investigated in three reanalyses, and it is 6 demonstrated that previously reported posi...
متن کاملLast Interglacial Arctic warmth confirms polar amplification of climate change
The warmest millennia of at least the past 250,000 years occurred during the Last Interglaciation, when global ice volumes were similar to or smaller than today and systematic variations in Earth’s orbital parameters aligned to produce a strong positive summer insolation anomaly throughout the Northern Hemisphere. The average insolation during the key summer months (M, J, J) was ca 11% above pr...
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ژورنال
عنوان ژورنال: International Journal of Climatology
سال: 2018
ISSN: 0899-8418
DOI: 10.1002/joc.5675