Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-13283-2017 |
Contributions of the troposphere and stratosphere to CH4 model biases | |
Wang, Zhiting1; Warneke, Thorsten1; Deutscher, Nicholas M.1,2; Notholt, Justus1; Karstens, Ute3; Saunois, Marielle4; Schneider, Matthias5; Sussmann, Ralf6; Sembhi, Harjinder7; Griffith, David W. T.2; Pollard, Dave F.8; Kivi, Rigel9; Petri, Christof1; Velazco, Voltaire A.2; Ramonet, Michel4; Chen, Huilin10,11 | |
2017-11-09 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:21 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Australia; France; England; New Zealand; Finland; Netherlands; USA |
英文摘要 | Inverse modelling is a useful tool for retrieving CH4 fluxes; however, evaluation of the applied chemical transport model is an important step before using the inverted emissions. For inversions using column data one concern is how well the model represents stratospheric and tropospheric CH4 when assimilating total column measurements. In this study atmospheric CH4 from three inverse models is compared to FTS (Fourier transform spectrometry), satellite and in situ measurements. Using the FTS measurements the model biases are separated into stratospheric and tropospheric contributions. When averaged over all FTS sites the model bias amplitudes (absolute model to FTS differences) are 7.4 +/- 5.1, 6.7 +/- 4.8, and 8.1 +/- 5.5 ppb in the tropospheric partial column (the column from the surface to the tropopause) for the models TM3, TM5-4DVAR, and LMDz-PYVAR, respectively, and 4.3 +/- 9.9, 4.7 +/- 9.9, and 6.2 +/- 11.2 ppb in the stratospheric partial column (the column from the tropopause to the top of the atmosphere). The model biases in the tropospheric partial column show a latitudinal gradient for all models; however there are no clear latitudinal dependencies for the model biases in the stratospheric partial column visible except with the LMDz-PYVAR model. Comparing modelled and FTS-measured tropospheric column-averaged mole fractions reveals a similar latitudinal gradient in the model biases but comparison with in situ measured mole fractions in the troposphere does not show a latitudinal gradient, which is attributed to the different longitudinal coverage of FTS and in situ measurements. Similarly, a latitudinal pattern exists in model biases in vertical CH4 gradients in the troposphere, which indicates that vertical transport of tropospheric CH4 is not represented correctly in the models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414949200001 |
WOS关键词 | COLUMN-AVERAGED METHANE ; GROWTH-RATE ; EMISSIONS ; N2O ; CO2 ; SENSITIVITY ; CALIBRATION ; RESOLUTION ; RETRIEVAL ; CHEMISTRY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30784 |
专题 | 地球科学 |
作者单位 | 1.Univ Bremen, Inst Environm Phys, Bremen, Germany; 2.Univ Wollongong, Sch Chem, Ctr Atmospher Chem, Wollongong, NSW, Australia; 3.Max Planck Inst Biogeochem, Jena, Germany; 4.Univ Paris Saclay, Lab Sci Climat & Environm, LSCE IPSL CEA CNRSUVSQ, F-91191 Gif Sur Yvette, France; 5.Karlsruhe Inst Technol, IMK ASF, Karlsruhe, Germany; 6.Karlsruhe Inst Technol, IMK IFU, Garmisch Partenkirchen, Germany; 7.Univ Leicester, Dept Phys & Astron, Earth Observat Sci, Leicester, Leics, England; 8.Natl Inst Water & Atmospher Res NIWA, Wellington, New Zealand; 9.FMI ARC, Sodankyla, Finland; 10.Univ Groningen, Ctr Isotope Res CIO, Groningen, Netherlands; 11.Univ Colorado, CIRES, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Wang, Zhiting,Warneke, Thorsten,Deutscher, Nicholas M.,et al. Contributions of the troposphere and stratosphere to CH4 model biases[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(21). |
APA | Wang, Zhiting.,Warneke, Thorsten.,Deutscher, Nicholas M..,Notholt, Justus.,Karstens, Ute.,...&Chen, Huilin.(2017).Contributions of the troposphere and stratosphere to CH4 model biases.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(21). |
MLA | Wang, Zhiting,et al."Contributions of the troposphere and stratosphere to CH4 model biases".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.21(2017). |
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