@Article{BurtonBCFHJKRW:2019:ReFiLa,
author = "Burton, Chantelle and Betts, Richard and Cardoso, Manoel Ferreira
and Feldpausch, Ted R. and Harper, Anna and Jones, Chris D. and
Kelley, Douglas I. and Robertson, Eddy and Wiltshire, Andy",
affiliation = "{Met Office Hadley Centre} and {Met Office Hadley Centre} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of Exeter} and {University of Exeter} and {Met Office Hadley
Centre} and {Centre for Ecology and Hydrology} and {Met Office
Hadley Centre} and {Met Office Hadley Centre}",
title = "Representation of fire, land-use change and vegetation dynamics in
JULES",
journal = "Geoscientific Model Development",
year = "2019",
volume = "12",
number = "1",
pages = "179--193",
month = "Jan.",
abstract = "Disturbance of vegetation is a critical component of land cover,
but is generally poorly constrained in land surface and carbon
cycle models. In particular, land-use change and fire can be
treated as large-scale disturbances without full representation of
their underlying complexities and interactions. Here we describe
developments to the land surface model JULES (Joint UK Land
Environment Simulator) to represent land-use change and fire as
distinct processes which interact with simulated vegetation
dynamics. We couple the fire model INFERNO (INteractive Fire and
Emission algoRithm for Natural envirOnments) to dynamic vegetation
within JULES and use the HYDE (History Database of the Global
Environment) land cover dataset to analyse the impact of land-use
change on the simulation of present day vegetation. We evaluate
the inclusion of land use and fire disturbance against standard
benchmarks. Using the Manhattan metric, results show improved
simulation of vegetation cover across all observed datasets.
Overall, disturbance improves the simulation of vegetation cover
by 35% compared to vegetation continuous field (VCF) observations
from MODIS and 13% compared to the Climate Change Initiative (CCI)
from the ESA. Biases in grass extent are reduced from -66% to 13
%. Total woody cover improves by 55% compared to VCF and 20%
compared to CCI from a reduction in forest extent in the tropics,
although simulated tree cover is now too sparse in some areas.
Explicitly modelling fire and land use generally decreases tree
and shrub cover and increases grasses. The results show that the
disturbances provide important contributions to the realistic
modelling of vegetation on a global scale, although in some areas
fire and land use together result in too much disturbance. This
work provides a substantial contribution towards representing the
full complexity and interactions between land-use change and fire
that could be used in Earth system models.",
doi = "10.5194/gmd-12-179-2019",
url = "http://dx.doi.org/10.5194/gmd-12-179-2019",
issn = "1991-959X",
language = "en",
targetfile = "burton_representation.pdf",
urlaccessdate = "27 abr. 2024"
}