Such results are strongly dependent
on model assumptions regarding climate change scenarios, ice dynamics and other factors.
If the
climate model assumptions are correct on a practical basis, then current atmospheric concentration would be less than 0.25 ppm.
This «induced deforestation» hypothesis is based on questionable data and
modeling assumptions about available land and yields, rather than on empirical evidence.
The new theory implies that adding CO2 to the atmosphere would reduce the relative humidity, contrary to
climate model assumptions.
I don't think I'm going to convince you this period is worthy of more detailed investigation, and may pose a problem
for model assumptions, and I don't think I'll try.
Carbon Tracker's work on the energy transition has already demonstrated the value in challenging traditional
energy model assumptions.
«The smaller the amount of genetic data available for a model, the bigger the influence of the
underlying model assumptions on the end result,» explains ETH professor Stadler.
The study provides sensitivity analyses of
key model assumptions and starting data uncertainty, indicating that the UN projections may have too small a range of uncertainty.
For the European data, the allele sharing fit is worse than for the simulated data (Supplementary Fig. 9), presumably due to
simplifying model assumptions of a constant population size in each branch and the absence of migration.
Many popular hedge fund models ignore the possibility of a sudden withdrawal of liquidity, while ratings agencies may make overly abstract or
unrealistic modeling assumptions and rely on the quality of the data assembled by Wall Street banks.
However there may be multiple equilibriums and a simple
box model assumption may not describe reality.
The authors find that
when modeling assumptions closely mirror the actual requirements and flexibilities of the final MATS rule, the predicted impact on the electricity sector is less severe.
This seems to me to reproduce the same old trick, of plugging in worst - case scenario projections
into modelled assumptions of sensitivity of this - or - that to climate, to reveal, hey - presto, a sound prediction of what life will be like a few decades hence.
My background is comp sci, so I very much understand that the original
FAR models assumptions matter to the results they plotted and if scenario baseline assumptions aren't met that results will differ.
It should be noted that our predictability estimates are based on the
perfect model assumption and are hence very likely to be overestimates of the real predictability of the coupled climate - land - vegetation system.
Because of this
implicit model assumption, and the fact that their variable forcing parameter is NH - leaning aerosol forcing, their posterior sensitivity estimate appears to be dominated by the SH warming trend.
Overall, this work is accessible to a general audience; however, Randers's limited analysis and justification of
model assumption restrict the usefulness of this book as a stand - alone text.
This can be achieved provided the inter-variable relationships are robust to
alternative modelling assumptions Piani et al. (2005) and Knutti et al. (2006)(described in Section 10.5.4.2) follow this approach, noting that in these cases the inter-variable relationships are derived from perturbed versions of a single model, and need to be confirmed using other models.