Error characterization of CO2 vertical mixing in the atmospheric transport model WRF-VPRM
Item
Title (Dublin Core)
Error characterization of CO2 vertical mixing in the atmospheric transport model WRF-VPRM
Description (Dublin Core)
One of the dominant uncertainties in inverse estimates of regional CO<sub>2</sub> surface-atmosphere fluxes is related to model errors in vertical transport within the planetary boundary layer (PBL). In this study we present the results from a synthetic experiment using the atmospheric model WRF-VPRM to realistically simulate transport of CO<sub>2</sub> for large parts of the European continent at 10 km spatial resolution. To elucidate the impact of vertical mixing error on modeled CO<sub>2</sub> mixing ratios we simulated a month during the growing season (August 2006) with different commonly used parameterizations of the PBL (Mellor-Yamada-Janjić (MYJ) and Yonsei-University (YSU) scheme). To isolate the effect of transport errors we prescribed the same CO<sub>2</sub> surface fluxes for both simulations. Differences in simulated CO<sub>2</sub> mixing ratios (model bias) were on the order of 3 ppm during daytime with larger values at night. We present a simple method to reduce this bias by 70–80% when the true height of the mixed layer is known.
Creator (Dublin Core)
Kretschmer, R.
Gerbig, C.
Karstens, U.
Koch, F.-T.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-12-2441-2012
https://acp.copernicus.org/articles/12/2441/2012/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
