| DOI: | 10.1016/j.atmosenv.2015.03.007
|
| Scopus记录号: | 2-s2.0-84924414168
|
| 论文题名: | Co-variability of smoke and fire in the Amazon basin |
| 作者: | Mishra A; K; , Lehahn Y; , Rudich Y; , Koren I
|
| 刊名: | Atmospheric Environment
|
| ISSN: | 0168-2563
|
| EISSN: | 1573-515X
|
| 出版年: | 2015
|
| 卷: | 109 | | 起始页码: | 97
|
| 结束页码: | 104
|
| 语种: | 英语
|
| 英文关键词: | AERONET
; AOD
; Fire
; MODIS
; Smoke
|
| Scopus关键词: | Aerosols
; Atmospheric aerosols
; Image reconstruction
; Loading
; Optical correlation
; Radiometers
; Satellite imagery
; Smoke
; Temperature measurement
; AERONET
; Aerosol robotic networks
; AOD
; Ground-based observations
; Moderate resolution imaging spectroradiometer
; MODIS
; Spatial and temporal scale
; Spatiotemporal variability
; Fires
; AERONET
; aerosol property
; anthropogenic source
; atmospheric pollution
; biomass burning
; data set
; fire behavior
; ground-based measurement
; MODIS
; smoke
; spatiotemporal analysis
; aerosol
; Amazon basin
; Article
; burn
; fire
; fire pixel count
; fire radiative power
; optical depth
; priority journal
; smoke
; South America
; Amazon Basin
|
| 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: | The Amazon basin is a hot spot of anthropogenically-driven biomass burning, accounting for approximately 15% of total global fire emissions. It is essential to accurately measure these fires for robust regional and global modeling of key environmental processes. Here we have explored the link between spatio-temporal variability patterns in the Amazon basin's fires and the resulting smoke loading using 11 years (2002-2012) of data from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Aerosol Robotic Network (AERONET) observations. Focusing on the peak burning season (July-October), our analysis shows strong inter-annual correlation between aerosol optical depth (AOD) and two MODIS fire products: fire radiative power (FRP) and fire pixel counts (FC). Among these two fire products, the FC better indicates the amount of smoke in the basin, as represented in remotely sensed AOD data. This fire product is significantly correlated both with regional AOD retrievals from MODIS and with point AOD measurements from the AERONET stations, pointing to spatial homogenization of the smoke over the basin on a seasonal time scale. However, MODIS AODs are found better than AERONET AODs observation for linking between smoke and fire. Furthermore, MODIS AOD measurements are strongly correlated with number of fires ~10-20 to the east, most likely due to westward advection of smoke by the wind. These results can be rationalized by the regional topography and the wind regimes. Our analysis can improve data assimilation of satellite and ground-based observations into regional and global model studies, thus improving the assessment of the environmental and climatic impacts of frequency and distribution variability of the Amazon basin's fires. We also provide the optimal spatial and temporal scales for ground-based observations, which could be used for such applications. © 2015 Elsevier Ltd. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81798
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel
|
| Recommended Citation: | |
Mishra A,K,, Lehahn Y,et al. Co-variability of smoke and fire in the Amazon basin[J]. Atmospheric Environment,2015-01-01,109
|
|
|