| DOI: | 10.1016/j.atmosenv.2015.05.068
|
| Scopus记录号: | 2-s2.0-84937925225
|
| 论文题名: | Improving high resolution emission inventories with local proxies and urban eddy covariance flux measurements |
| 作者: | Gioli B; , Gualtieri G; , Busillo C; , Calastrini F; , Zaldei A; , Toscano P
|
| 刊名: | Atmospheric Environment
|
| ISSN: | 0168-2563
|
| EISSN: | 1573-515X
|
| 出版年: | 2015
|
| 卷: | 115 | | 起始页码: | 246
|
| 结束页码: | 256
|
| 语种: | 英语
|
| 英文关键词: | Eddy covariance
; Emission inventory validation
; Emission measurements
; Spatial disaggregation
; Temporal disaggregation
|
| Scopus关键词: | Greenhouse gases
; Ionization of gases
; Natural gas
; Roads and streets
; Disaggregation
; Eddy covariance
; Emission inventories
; Emission measurement
; Spatial disaggregation
; Gas emissions
; carbon dioxide
; natural gas
; atmospheric pollution
; carbon dioxide
; combustion
; eddy covariance
; emission inventory
; greenhouse gas
; model validation
; natural gas
; parameterization
; road
; spatiotemporal analysis
; traffic emission
; Article
; carbon footprint
; combustion
; Eddy covariance
; priority journal
; validation study
; vegetation
|
| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
|
| 英文摘要: | Emission inventories are the fundamental official data on atmospheric emissions of pollutants and greenhouse gases at a variety of spatial and temporal scales worldwide. This study makes use of direct CO2 emission measurements made with the eddy covariance technique over a completely urbanized area, with no confounding effect of vegetation, where emissions are mostly controlled by natural gas combustion processes and road traffic. Objectives are: i) to validate top-down spatially and temporally disaggregated emission inventories at yearly, monthly, weekly and hourly time scales; ii) to quantify the improvement achieved in official inventories when replacing built-in temporal disaggregation proxies with customized proxies based on local data of road traffic and natural gas consumption. We demonstrate that the overall performance of official inventory at yearly scale is rather good with an emission of 3.08gCO2m-2h-1 against a measured emission of 3.21±0.12gCO2m-2h-1. When temporally disaggregating annual emissions, the agreement between inventory and observations always significantly improves when using local proxies, by 47% (from 0.70 to 0.37gCO2m-2h-1 RMSE) at monthly scale, by 26% (from 0.58 to 0.43gCO2m-2h-1 RMSE) at weekly scale, and by 32% (from 1.26 to 0.85gCO2m-2h-1 RMSE), at hourly scale. The validity of this analysis goes beyond CO2 since the temporal proxies used by the inventories mimic the intensity of specific emission processes, therefore species emitted in the same processes as CO2, would benefit from the improved parameterization of temporal proxies shown here. These results indicate that effort should be put into developing improved temporal proxies based on local rather than national scale data, that can better mimic site dependent behaviors. © 2015 Elsevier Ltd. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81690
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | Institute of Biometeorology (CNR-IBIMET), Via Caproni 8, Firenze, Italy; LaMMA Consortium, Via Madonna del Piano 10, Sesto Fiorentino, Italy
|
| Recommended Citation: | |
Gioli B,, Gualtieri G,, Busillo C,et al. Improving high resolution emission inventories with local proxies and urban eddy covariance flux measurements[J]. Atmospheric Environment,2015-01-01,115
|
|
|