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| 001 | 276361 | ||
| 005 | 20240712101053.0 | ||
| 024 | 7 | _ | |2 doi |a 10.5194/gmdd-8-6267-2015 |
| 024 | 7 | _ | |2 ISSN |a 1991-9611 |
| 024 | 7 | _ | |2 ISSN |a 1991-962X |
| 024 | 7 | _ | |2 Handle |a 2128/9464 |
| 037 | _ | _ | |a FZJ-2015-06819 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 910 |
| 100 | 1 | _ | |0 P:(DE-HGF)0 |a Goris, N. |b 0 |
| 245 | _ | _ | |a Singular vector based targeted observations of chemical constituents: description and first application of the EURAD-IM-SVA |
| 260 | _ | _ | |a Katlenburg-Lindau |b Copernicus |c 2015 |
| 336 | 7 | _ | |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |a Journal Article |b journal |m journal |s 1448527593_24252 |
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| 520 | _ | _ | |a Measurements of the large dimensional chemical state of the atmosphere provide only sparse snapshots of the state of the system due to their typically insufficient temporal and spatial density. In order to optimize the measurement configurations despite those limitations, the present work describes the identification of sensitive states of the chemical system as optimal target areas for adaptive observations. For this purpose, the technique of singular vector analysis (SVA), which has been proved effective for targeted observations in numerical weather predication, is implemented into the chemical transport model EURAD-IM (EURopean Air pollution and Dispersion – Inverse Model) yielding the EURAD-IM-SVA. Besides initial values, emissions are investigated as critical simulation controlling targeting variables. For both variants, singular vectors are applied to determine the optimal placement for observations and moreover to quantify which chemical compounds have to be observed with preference. Based on measurements of the airship based ZEPTER-2 campaign, the EURAD-IM-SVA has been evaluated by conducting a comprehensive set of model runs involving different initial states and simulation lengths. Since the considered cases are restricted in terms of considered chemical compounds and selected areas, they allow for a retracing of the results and a confirmation of their correctness. Our analysis shows that the optimal placement for observations of chemical species is not entirely determined by mere transport and mixing processes. Rather, a combination of initial chemical concentrations, chemical conversions, and meteorological processes determine the influence of chemical compounds and regions. We furthermore demonstrate that the optimal placement of observations of emission strengths is highly dependent on the location of emission sources and that the benefit of including emissions as target variables outperforms the value of initial value optimisation with growing simulation length. The obtained results confirm the benefit of considering both initial values and emission strengths as target variables and of applying the EURAD-IM-SVA for measurement decision guidance with respect to chemical compounds. |
| 536 | _ | _ | |0 G:(DE-HGF)POF3-243 |a 243 - Tropospheric trace substances and their transformation processes (POF3-243) |c POF3-243 |f POF III |x 0 |
| 588 | _ | _ | |a Dataset connected to CrossRef |
| 700 | 1 | _ | |0 P:(DE-Juel1)129194 |a Elbern, H. |b 1 |e Corresponding author |u fzj |
| 773 | _ | _ | |0 PERI:(DE-600)2456729-2 |a 10.5194/gmdd-8-6267-2015 |g Vol. 8, no. 8, p. 6267 - 6307 |n 8 |p 6267 - 6307 |t Geoscientific model development discussions |v 8 |x 1991-962X |y 2015 |
| 856 | 4 | _ | |u http://www.geosci-model-dev-discuss.net/8/6267/2015/gmdd-8-6267-2015-print.pdf |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/276361/files/gmdd-8-6267-2015.pdf |y OpenAccess |
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