Abstract
This paper derives an algebraic solution (the Geometric Series Solution: GSS) to replace iterative runs of soil organic matter (SOM) models for initialisation of SOM pools. The method requires steady-state/long-term-average series of plant input and soil climate driving data. It calculates the values of SOM pools as if SUM models are iterated for a large number of cycles. The method has a high computational efficiency because it is an explicit solution to the calculations used to initialise the model and so requires a single iteration of the SOM model. Under the premise that the iterative pool inputs can be derived analytically, the GSS equations are applicable for other first-order-based SOM models. To illustrate applicability the method is applied to the coupled JULES-ECOSSE model. (c) 2013 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 48-53 |
Number of pages | 6 |
Journal | Ecological Modelling |
Volume | 267 |
Early online date | 26 Aug 2013 |
DOIs | |
Publication status | Published - 10 Oct 2013 |
Keywords
- algebraic method
- model initialisation
- soil organic matter (SOM)
- spin-up
- The ECOSSE model
- The JULES model
- carbon
- equilibrium
- nitrogen
- pools