Fig 1 - uploaded by Toby Richard Marthews
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Physical map of tropical South America (based on the HydroSHEDS Digital Elevation Model, Lehner et al., 2006). National borders and the outline of Amazonia sensu stricto are shown (Eva et al., 2005).
Source publication
Modern land surface model simulations capture soil profile water movement through the use of soil hydraulics sub-models, but good hydraulic parameterisations are often lacking, especially in the tropics. We present much-improved gridded datasets of hydraulic parameters for surface soil for the critical area of tropical South America, describing soi...
Contexts in source publication
Context 1
... which are equations used to estimate unavailable soil variables from closely re- lated and more available soil properties such as texture and dry bulk density (Table 2). There is much current debate on the suitability of hydraulic models and PTFs in the tropics and we make recommendations for their use in the context of tropical South America (Fig. 1). Our hydraulic parameters may therefore be used to produce much more robust simu- lations of soil water dynamics for this region. Downloadable Lehner et al., 2006). National borders and the outline of Amazonia sensu stricto are shown ( Eva et al., ...
Context 2
... but high hydraulic conductivity. Unrealistically small values of k unsat are avoided by restricting k unsat to ≥ 10 −9 mm s −1 ( Marthews et al., 2008). to São Paulo, Brazil, excluding the Galápagos Archipelago, and the outlying islands Cocos Is., Malpelo Is., Fernando de Noronha, St Peter and St Paul, Trindade and Martim Vaz and Rocas Atoll, Fig. 1). Tropical soils cover a huge range of types and this area is no exception (Ashton, 2004), with parent material varying from the Precambrian rocks of the Guiana and Brazilian Shields to the much younger Cenozoic geology of the Andes and western Amazon (Quesada et al., ...
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Modern land surface model simulations capture soil profile water movement
through the use of soil hydraulics sub-models, but good hydraulic
parameterisations are often lacking, especially in the tropics. We present
much-improved gridded data sets of hydraulic parameters for surface soil for
the critical area of tropical South America, describing so...
