@InProceedings{HuntingfordHaGaCoBeMa:2002:UsGCAn,
author = "Huntingford, C. and Harris, P. P. and Gash, J. H. C. and Cox, P.
M. and Betts, R. A. and Marengo, Jos{\'e} Antonio",
title = "The use of a GCM analogue model to assess the impact of
uncertainty in Amazonian land surface parameterisation on future
atmospheric CO{\'y} concentrations",
year = "2002",
organization = "International LBA Scientific Conference, 2.",
keywords = "METEOROLOGIA.",
abstract = "Based on Hadley Centre GCM simulations, propagating patterns exist
in the way that surface climatology is predicted to vary within a
changing climate. Such patterns are observed for surface
temperature, humidity, solar forcing and rainfall, which all
influence land-surface response. The derived spatial patterns are
indexed by the global mean land temperature, which, within the
resultant {"}GCM analogue model{"}, depends upon modelled
atmospheric concentrations of greenhouse gases. The analogue model
has been extended to incorporate an interactive global carbon
cycle. The model generates a surface climate, consistent with
atmospheric CO2 concentration, which is used to drive a
land-surface scheme (MOSES)coupled to a dynamic terrestrial carbon
cycle model (TRIFFID). Changes in terrestrial carbon are allowed
to feedback onto atmospheric CO2 concentration, and a {"}single
point{"} sub-model represents global atmosphere-ocean CO2 fluxes.
Such inclusion of land and ocean carbon dioxide feedbacks means
that a model is available that may be driven by a range of carbon
emissions scenarios, is based upon the latest GCM simulations and
places high physical representation within the land surface
component. Using this computationally quick methodology, the
sensitivity of the global carbon cycle to uncertainty in the
land-surface parameterisation for Amaz{\^o}nia is investigated.
Such uncertainty is directly related to the trajectory in
atmospheric CO2 concentration for a {"}business as usual{"}
emissions scenario. As such, some measure of {"}error bars{"} on
predictions of future climate change can be related directly to
uncertainty in Amaz{\^o}nian land-surface response.",
conference-location = "Manaus, Br",
conference-year = "7-10 July 2002",
label = "10239",
targetfile = "9320.pdf",
urlaccessdate = "20 jan. 2021"
}