Uncertainties in climate responses to past land cover change: First results from the LUCID intercomparison study
Seven climate models were used to explore the biogeophysical impacts of human-induced land cover change (LCC) at regional and global scales. The imposed LCC led to statistically significant decreases in the northern hemisphere summer latent heat flux in three models, and increases in three models. Five models simulated statistically significant cooling in summer in near-surface temperature over regions of LCC and one simulated warming. There were few significant changes in precipitation. Our results show no common remote impacts of LCC. The lack of consistency among the seven models was due to: 1) the implementation of LCC despite agreed maps of agricultural land, 2) the representation of crop phenology, 3) the parameterisation of albedo, and 4) the representation of evapotranspiration for different land cover types. This study highlights a dilemma: LCC is regionally significant, but it is not feasible to impose a common LCC across multiple models for the next IPCC assessment.
document
https://n2t.org/ark:/85065/d71v5g0r
eng
geoscientificInformation
Text
publication
2016-01-01T00:00:00Z
publication
2009-07-23T00:00:00Z
An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union.
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