FN Archimer Export Format
PT J
TI MEDUSA-2.0: an intermediate complexity biogeochemical model of the marine carbon cycle for climate change and ocean acidification studies
BT 
AF YOOL, A.
   POPOVA, E. E.
   ANDERSON, T. R.
AS 1:1;2:1;3:1;
FF 1:;2:;3:;
C1 Univ Southampton, Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England.
C2 NOC, UK
IN DOAJ
IF 6.086
TC 166
UR https://archimer.ifremer.fr/doc/00165/27666/25842.pdf
LA English
DT Article
AB MEDUSA-1.0 (Model of Ecosystem Dynamics, nutrient Utilisation, Sequestration and Acidification) was developed as an "intermediate complexity" plankton ecosystem model to study the biogeochemical response, and especially that of the so-called "biological pump", to anthropogenically driven change in the World Ocean (Yool et al., 2011). The base currency in this model was nitrogen from which fluxes of organic carbon, including export to the deep ocean, were calculated by invoking fixed C : N ratios in phytoplankton, zooplankton and detritus. However, due to anthropogenic activity, the atmospheric concentration of carbon dioxide (CO2) has significantly increased above its natural, inter-glacial background. As such, simulating and predicting the carbon cycle in the ocean in its entirety, including ventilation of CO2 with the atmosphere and the resulting impact of ocean acidification on marine ecosystems, requires that both organic and inorganic carbon be afforded a more complete representation in the model specification. Here, we introduce MEDUSA-2.0, an expanded successor model which includes additional state variables for dissolved inorganic carbon, alkalinity, dissolved oxygen and detritus carbon (permitting variable C : N in exported organic matter), as well as a simple benthic formulation and extended parameterizations of phytoplankton growth, calcification and detritus remineralisation. A full description of MEDUSA-2.0, including its additional functionality, is provided and a multi-decadal spin-up simulation (1860-2005) is performed. The biogeochemical performance of the model is evaluated using a diverse range of observational data, and MEDUSA-2.0 is assessed relative to comparable models using output from the Coupled Model Intercomparison Project (CMIP5).
PY 2013
SO Geoscientific Model Development
SN 1991-959X
PU Copernicus Gesellschaft Mbh
VL 6
IS 5
UT 000326601300024
BP 1767
EP 1811
DI 10.5194/gmd-6-1767-2013
ID 27666
ER

EF