Not exact matches
For example, Sturrock et al. (2011)
estimate that a) Dothistroma needle blight (Dothistroma septosporum or D. pini), whose primary host in Montana is ponderosa pine, will have reduced or increased impacts,
depending on
warmer and drier or wetter conditions, respectively; and b) Armillaria root disease (Armillaria spp.), which generally affects Douglas - fir and grand fir, will have increased impacts under
warmer, drier conditions, but no change under
warmer, wetter conditions.
[Further Response: Our
estimates of the magnitude of future global
warming do not come from ice core data, and do not
depend on it in any way.
The emission limit
depends on climate sensitivity, but central
estimates [12]--[13], including those in the upcoming Fifth Assessment of the Intergovernmental Panel on Climate Change [14], are that a 2 °C global
warming limit implies a cumulative carbon emissions limit of the order of 1000 GtC.
This imbalance is really an important quantity —
estimates of how much
warming is in the «pipeline», the size of the aerosol cooling effect etc. all
depend on knowing what this number is.
[Further Response: Our
estimates of the magnitude of future global
warming do not come from ice core data, and do not
depend on it in any way.
Estimates of total global
warming emissions
depend on a number of factors, including wind speed, percent of time the wind is blowing, and the material composition of the wind turbine [13].
Estimating the exact role of CO2 increase in the
warming of the last 150 years
depends on a well - known unknown, namely the amount of
warming that would have occurred without the increase in CO2.
The emission limit
depends on climate sensitivity, but central
estimates [12]--[13], including those in the upcoming Fifth Assessment of the Intergovernmental Panel on Climate Change [14], are that a 2 °C global
warming limit implies a cumulative carbon emissions limit of the order of 1000 GtC.
«Results imply that global and regional
warming rates
depend sensitively on regional ocean processes setting the [ocean heat uptake] pattern, and that equilibrium climate sensitivity can not be reliably
estimated from transient observations.»
With the INDCs in place we're looking at
warming between 2.7 and 3.7 degrees
depending on the
estimate,» Taryn Fransen of the World Resources Institute says.
In all these regions, greenhouse gases are
estimated to have caused generally increasing
warming as the century progressed, balanced to a greater or lesser degree,
depending on the region, by cooling from sulfate aerosols in the middle of the century.»
It is surely not particularly difficult to understand that the IPCC's temperature predictions, on the A2 scenario,
depend first upon its predictions of future (exponential) growth in CO2 concentration, and secondly upon its
estimates of the quantum of equilibrium
warming to be expected in response to its predicted increase in CO2 concentration.
The most widely quoted
estimates, like those in the Dynamic Integrated Model of Climate and the Economy, known as DICE, used by Yale's William Nordhaus and colleagues,
depend upon educated guesswork to place a value on the negative effects of global
warming in a number of crucial areas, especially agriculture and coastal protection, then try to make some allowance for other possible repercussions.
The exact
warming resulting from this delay
depends on the trajectory of future CO2 emissions but using one business - as usual - projection we
estimate an increase of 3/4 °C for every 15 - year delay in CO2 mitigation.
We don't know exactly how much, because the
warming power of CO2
depends on how much is already present in the atmosphere, and
estimates for initial CO2 concentration during the PETM vary wildly.