«In this case the 1979 - 2009 interval is a 31 - year span during which the upward trend in surface data strongly suggests a climate -
scale warming process.
Not exact matches
There are multiple causes of the detailed
processes involved in global amphibian declines and extinctions [107]--[108], but global
warming is a key contributor and portends a planetary -
scale mass extinction in the making unless action is taken to stabilize climate while also fighting biodiversity's other threats [109].
Seems this might hold for larger
scale events, such as the arctic ice melting (i.e., there would be more
warming in the arctic ocean in our current times, except some of the «
warming» energy is going into the melting
process rather than
warming).
It is true that the
scale (both spatial and temporal) of global climate
processes makes controlled experiments impossible and theories of global
warming difficult to test.
I'm very convinced that the physical
process of global
warming is continuing, which appears as a statistically significant increase of the global surface and tropospheric temperature anomaly over a time
scale of about 20 years and longer and also as trends in other climate variables (e.g., global ocean heat content increase, Arctic and Antarctic ice decrease, mountain glacier decrease on average and others), and I don't see any scientific evidence according to which this trend has been broken, recently.
This
process is all part of the Brewer - Dobson circulation and insures that the polar regions (especially the North Pole) are
warmer than they would be without this large
scale circulation.
There are multiple causes of the detailed
processes involved in global amphibian declines and extinctions [107]--[108], but global
warming is a key contributor and portends a planetary -
scale mass extinction in the making unless action is taken to stabilize climate while also fighting biodiversity's other threats [109].
The sea level rise commitment due to thermal expansion has much longer time
scales than the surface
warming commitment, owing to the slow
processes that mix heat into the deep ocean (Church et al., 2001).
Among the global -
scale tipping points identified by earth scientists are the collapse of large ice sheets in Greenland and Antarctica, changes in ocean circulation, feedback
processes by which
warming triggers more
warming, and the acidification of the ocean.h
The complexity of Arctic landscapes under climate
warming means we have low confidence in which of these different
processes might dominate on a regional
scale.
It does not mention large
scale processes which are (1) under active study, (2) might explain 20th century
warming and (3) are not included in the models.
Although we can not establish a clear connection between SAA dynamics and global
warming, the strong correlation between the former and global sea level supports the idea that global
warming may be at least partly controlled by deep Earth
processes triggering geomagnetic phenomena, such as the South Atlantic Anomaly, on a century time
scale.
«The Long Time
Scales of Human - Caused Climate
Warming: Further Challenges for the Global Policy
Process.»