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| DOI | 10.1016/j.atmosenv.2021.118933 |
| Hotspot analysis and long-term trends of absorbing aerosol index from dust emissions measured by the Ozone Monitoring Instrument at different urban locations in India during 2005–2018 | |
| Althaf P.; Kannemadugu H.B.S.; Kumar K.R. | |
| 发表日期 | 2022 |
| ISSN | 1352-2310 |
| 卷号 | 272 |
| 英文摘要 | The dust storm is a natural hazard and knowledge of hotspots of dust emission is important to improve forecasting the dust events by numerical models of climate and air quality. The absorbing aerosol index (AAI) observations derived from the Ozone Monitoring Instrument (OMI) sensor are analyzed over India covering the period from 2005 to 2018. In this manuscript, the hotspot analysis of AAI was conducted using the spatial autocorrelation technique for different seasons. The results showed significant spatial and temporal variability in the observed AAI. During pre-monsoon, the hotspot region is widely distributed, though with noticed spatially varying intensities, from the Thar Desert to West Bengal through the Indo Gangetic Plain (IGP) region. It is revealed from the back trajectory analysis that the airmasses were originated from the arid desert regions located in the West of India transporting the dust particles during the pre-monsoon over the IGP regions. Further, the trend analysis of AAI during the pre-monsoon over selected metropolitan in India was done using the Mann–Kendall (MK) test and Sen's robust slope estimator. The results showed a significant increasing (0.02 yr−1) and decreasing (−0.01 yr−1) trend in AAI at Patna and Hyderabad, respectively, while it is noticed stable or no trend at other cities. MERRA-2 Dust aerosol optical thickness was found to be very well correlated with AAI and shows decreasing and increasing trends at Nagpur (0.0005 yr−1) and Jaisalmer (0.004 yr−1), respectively. A negative correlation is observed between rainfall and AAI, indicating the reduction of AAI with increasing rainfall. © 2022 Elsevier Ltd |
| 关键词 | Absorbing aerosol indexHotspot analysisIndiaMineral dustOMI Sensor |
| 语种 | 英语 |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248076 |
| 作者单位 | Department of Physics, Koneru Lakshmaiah Education Foundation (KLEF), Vaddeswaram, Guntur, Andhra Pradesh 522 502, India; Atmospheric Chemistry Division, Earth and Climate Sciences Area, National Remote Sensing Centre, ISRO-Department of Space, Shadnagar, Telangana 509 202, India |
| 推荐引用方式 GB/T 7714 | Althaf P.,Kannemadugu H.B.S.,Kumar K.R.. Hotspot analysis and long-term trends of absorbing aerosol index from dust emissions measured by the Ozone Monitoring Instrument at different urban locations in India during 2005–2018[J],2022,272. |
| APA | Althaf P.,Kannemadugu H.B.S.,&Kumar K.R..(2022).Hotspot analysis and long-term trends of absorbing aerosol index from dust emissions measured by the Ozone Monitoring Instrument at different urban locations in India during 2005–2018.ATMOSPHERIC ENVIRONMENT,272. |
| MLA | Althaf P.,et al."Hotspot analysis and long-term trends of absorbing aerosol index from dust emissions measured by the Ozone Monitoring Instrument at different urban locations in India during 2005–2018".ATMOSPHERIC ENVIRONMENT 272(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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