Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025985 |
Comparing mass balance and adjoint methods for inverse modeling of nitrogen dioxide columns for global nitrogen oxide emissions | |
Cooper, Matthew1; Martin, Randall V.1,2; Padmanabhan, Akhila1; Henze, Daven K.3 | |
2017-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | Satellite observations offer information applicable to top-down constraints on emission inventories through inverse modeling. Here we compare two methods of inverse modeling for emissions of nitrogen oxides (NOx) from nitrogen dioxide (NO2) columns using the GEOS-Chem chemical transport model and its adjoint. We treat the adjoint-based 4D-Var modeling approach for estimating top-down emissions as a benchmark against which to evaluate variations on the mass balance method. We use synthetic NO2 columns generated from known NOx emissions to serve as truth. We find that error in mass balance inversions can be reduced by up to a factor of 2 with an iterative process that uses finite difference calculations of the local sensitivity of NO2 columns to a change in emissions. In a simplified experiment to recover local emission perturbations, horizontal smearing effects due to NOx transport are better resolved by the adjoint approach than by mass balance. For more complex emission changes, or at finer resolution, the iterative finite difference mass balance and adjoint methods produce similar global top-down inventories when inverting hourly synthetic observations, both reducing the a priori error by factors of 3-4. Inversions of simulated satellite observations from low Earth and geostationary orbits also indicate that both the mass balance and adjoint inversions produce similar results, reducing a priori error by a factor of 3. As the iterative finite difference mass balance method provides similar accuracy as the adjoint method, it offers the prospect of accurately estimating top-down NOx emissions using models that do not have an adjoint. |
英文关键词 | inverse modeling NOx emissions mass balance adjoint modeling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401180800034 |
WOS关键词 | TROPOSPHERIC NO2 RETRIEVAL ; FINE PARTICULATE MATTER ; THERMAL POWER-PLANTS ; UNITED-STATES ; DATA ASSIMILATION ; SATELLITE-OBSERVATIONS ; CHEMICAL-COMPOSITION ; OZONE ; OMI ; CHINA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/33570 |
专题 | 气候变化 |
作者单位 | 1.Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada; 2.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA; 3.Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Cooper, Matthew,Martin, Randall V.,Padmanabhan, Akhila,et al. Comparing mass balance and adjoint methods for inverse modeling of nitrogen dioxide columns for global nitrogen oxide emissions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(8). |
APA | Cooper, Matthew,Martin, Randall V.,Padmanabhan, Akhila,&Henze, Daven K..(2017).Comparing mass balance and adjoint methods for inverse modeling of nitrogen dioxide columns for global nitrogen oxide emissions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(8). |
MLA | Cooper, Matthew,et al."Comparing mass balance and adjoint methods for inverse modeling of nitrogen dioxide columns for global nitrogen oxide emissions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.8(2017). |
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