Technical Note: A new coupled system for global-to-regional downscaling of CO2 concentration estimation
Item
Title (Dublin Core)
Technical Note: A new coupled system for global-to-regional downscaling of CO2 concentration estimation
Description (Dublin Core)
We introduce a global-to-regional nesting scheme for atmospheric transport models used in simulating concentrations of green house gases from globally distributed surface fluxes. The coupled system of the regional Stochastic Time-Inverted Lagrangian Transport (STILT) model and the global atmospheric transport model (TM3) is designed to resolve atmospheric trace gas concentrations at high temporal and spatial resolutions in a specified domain e.g. for regional inverse applications. The nesting technique used for the coupling is based on a decomposition of the atmospheric concentration signal into a far-field and a near-field contribution enabling the usage of different model types for global (Eulerian) and regional (Lagrangian) scales. For illustrating the performance of the coupled TM3-STILT system we compare simulated mixing ratios of carbon dioxide with available observations at 10 sites in Europe. For all chosen sites the TM3-STILT provided higher correlations between the modelled and the measured time series than the TM3 global model. Autocorrelation analysis demonstrated that the TM3-STILT model captured temporal variability of measured tracer concentrations better than TM3 at most sites.
Creator (Dublin Core)
Trusilova, K.
Rödenbeck, C.
Gerbig, C.
Heimann, M.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-10-3205-2010
https://acp.copernicus.org/articles/10/3205/2010/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
