The conclusion of Emanuel at first sight appears to contrast with the a recent statement from NOAA that a 20 -30-year reoccurring cycle is the dominant climate factor that controls Atlantic hurricane activity and that any potentially weak signal associated with longer -
term climate change appears to be a minor factor.
Not exact matches
As with
climate change, the only pragmatic option is to concentrate efforts to fulfil people's desires and demands in a way that protects natural ecosystems as far as possible — not to try to challenge patterns of consumption per se by insisting that they are unsustainable, even if this
appears to be the case in the short
term.
«In addition, this early phase of evolutionary divergence
appears to have preceded the extreme
climate changes that led to Snowball Earth, a period marked by severe long -
term global glaciation that lasted from about 720 to 635 million years ago,» Dohrmann says.
And while weather patterns can
change from year to year, Lake Superior
appears to be behaving in ways that, to scientists, indicate long -
term climate change: Water temperatures are rising and evaporation is up, which leads to lower water levels in some seasons.
But on the ground, the effects of
climate change sometimes
appear in pulses, or what scientists
term «disturbance events.»
These two effects, the authors wrote, «
appear to counteract each other, contributing no appreciable long -
term change in the risk for dry
climate extremes over California since the late 19th century.»
It
appears that the
climate changes according to a repeating 60 year or so pattern with 30 years of general warming and 30 years of general cooling, this pattern superimposed, we hope, on a very slow longer
term warming trend.
I think a better definition of
climate change would be a recognizable radiative balance state
change that
appears immune to short
term cycles like ENSO and seasonal cycles.
As the post explains, Broecker's 1975 paper
appears to have been the first in the scientific literature to use the
term «global warming» to describe
climate change driven by the buildup of human - generated carbon dioxide.
Driven by the
climate science, the international community is increasingly concerned about the need to set a long -
term emission reduction strategy so as to me et a target that will prevent dangerous
climate change, or at least, as some dangerous
climate change appears unavoidable, limiting the damage.
The biggest problem with «writing off solar effects on
climate as insignificant», at the same time attributing most of the recent
changes to AGW, is that it does not
appear to stand up over the longer
term.
The appropriate time period to be used for evaluation of the risks underlying
climate change and for the development of policy responses and assessment of costs and benefits of each option
appears to be more in
terms of a hundred years or thereabouts.
increased risk of regional water scarcity, Precipitation in the US
appears to have increased, so this is nonsense
terms of
climate change.
If they are persuadable and persuaded by evidence that their opinions are unsupported by the available evidence and / or are capable of critically examining evidence that
appears to support their opinion and find fault with it, that tells me far more about someone than the place he or she starts out / happens to currently stand in
terms of «accepting» anthropogenic
climate change.
Best I can figure out because the end results of
climate change is still 100 years out there, you can suggest in the near
term things can happen that
appear to be a falsification.
The Google book archive shows very little use of the
terms «global warming» and «
climate change» in books until the mid 1980s («climatic
change» does
appear, pretty steadily, through the entire 20th century).
But glimmers of hope for a political solution began
appearing in recent months, perhaps most notably in U.S. President Barack Obama's high - profile promises to tackle
climate change during his second
term.
In the middle Miocene (~ 18 - 12 Ma), major
climate change trends
appear to be coupled to pCO2
changes; however, in the late Miocene (~ 12 - 5 Ma),
climate was warmer than today even while pCO2 was similar to today, indicating a decoupling between long -
term climate evolution and pCO2
change.
Rich has pointed out that the
term «
climate change» does not
appear in the novel.
These feedbacks are the primary source of uncertainty in how much the earth will warm (side note: the question that most
climate scientists who study the forcing due to CO2 try to answer is, how much will the long -
term globally averaged surface temperature of the earth rise due to an rapid rise of CO2 to twice its industrial level, that is, 270 ppm to 540 ppm; it is currently about 380 last time I checked, and rising at ~ 3ppm / year, although this rate of
change appears to be accelerating).
In ethical
terms we see another example of a
climate scientist who holds a strong ethical commitment to the policy dimension of
climate change and its associated end of shaping public opinion and behaviour,
appearing to prioritise the pursuit of those ends above the narrower moral codes of scientific discovery.
The link between
climate change and wild weather
appears to be clearer — not just in
terms of scientific data but in actual lived incidents.