TY  - JOUR
AU  - LAW R M, P. E. T. E. R. S. W.
PY  - 2008//
TI  - TransCom model simulations of hourly atmospheric CO2 : Experimental overview and diurnal cycle results for 2002
JO  - Global biogeochemical cycles
VL  - 22
IS  - 3
PB  - American Geophysical Union
KW  - Air
KW  - Amplitud
KW  - Amplitude
KW  - Atmósfera
KW  - Atmosphère
KW  - Carbon dioxide
KW  - Carbono dióxido
KW  - Concentración
KW  - Concentration
KW  - Cycle
KW  - cycles
KW  - Dioxyde de carbone
KW  - diurnal variations
KW  - Echantillonnage
KW  - Erreur
KW  - Error
KW  - errors
KW  - Etude expérimentale
KW  - experimental studies
KW  - Modèle
KW  - Modeling
KW  - Modélisation
KW  - Modelización
KW  - Modelo
KW  - models
KW  - Muestreo
KW  - Radón
KW  - sampling
KW  - Simulación
KW  - Simulation
KW  - Transport
KW  - Transporte
KW  - Variación diurna
KW  - Variation diurne
KW  -
N2  - [1] A forward atmospheric transport modeling experiment has been coordinated by the TransCom group to investigate synoptic and diurnal variations in CO2. Model simulations were run for biospheric, fossil, and air-sea exchange of CO2 and for SF6 and radon for 2000-2003. Twenty-five models or model variants participated in the comparison. Hourly concentration time series were submitted for 280 sites along with vertical profiles, fluxes, and meteorological variables at 100 sites. The submitted results have been analyzed for diurnal variations and are compared with observed CO2 in 2002. Mean summer diurnal cycles vary widely in amplitude across models. The choice of sampling location and model level account for part of the spread suggesting that representation errors in these types of models are potentially large. Despite the model spread, most models simulate the relative variation in diurnal amplitude between sites reasonably well. The modeled diurnal amplitude only shows a weak relationship with vertical resolution across models; differences in near-surface transport simulation appear to play a major role. Examples are also presented where there is evidence that the models show useful skill in simulating seasonal and synoptic changes in diurnal amplitude.
SN  - 0886-6236
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=1708), last updated on Sat, 06 Jul 2024 01:58:35 +0200
ID  - LAWRM2008
ER  -