Helping vulnerable populations access aid centers in the case of extreme heat events, dissuading construction on coastlines, conserving water resources, and developing drought - resistant crops are adaptation measures we should pursue regardless of
the exact magnitude of the changes in store for us.
Finally, the 4 W m − 2 CO2 forcing avoids the uncertainty in the
exact magnitude of a doubled CO2 forcing [1,48] estimate
of 3.7 W m − 2 for doubled CO2, whereas Hansen et al. [66] obtain 4.1 W m − 2, as well as problems associated with the fact that a doubled CO2 forcing varies as the CO2 amount
changes (the assumption that each CO2 doubling has the same forcing is meant to approximate the effect
of CO2 absorption line saturation, but actually the forcing per doubling increases as CO2 increases [66,85]-RRB-.