Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-8229-2019 |
Simulations of black carbon over the Indian region: improvements and implications of diurnality in emissions | |
Govardhan, Gaurav1,2; Satheesh, Sreedharan Krishnakumari1,2; Moorthy, Krishnaswamy Krishna1; Nanjundiah, Ravi1,2,3 | |
2019-06-25 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:12页码:8229-8241 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | With a view to improving the performance of WRF-Chem over the Indian region in simulating BC (black carbon) mass concentrations as well as its short-term variations, especially on a diurnal scale, a region-specific diurnal variation scheme has been introduced in the model emissions and the performance of the modified simulations has been evaluated against high-resolution measurements carried out over eight ARFI (Aerosol Radiative Forcing over India) network observatories spread across India for distinct seasons: pre-monsoon (represented by May), post-monsoon (represented by October) and winter (represented by December). In addition to an overall improvement in the simulated concentrations and their temporal variations, we have also found that the effects of prescribing diurnally varying emissions on the simulated near-surface concentrations largely depend on the boundary layer turbulence. The effects are perceived quickly (within about 2-3 h) during the evening-early morning hours when the atmospheric boundary layer is shallow and convective mixing is weak, while they are delayed, taking as much as about 5-6 h, during periods when the boundary layer is deep and convective mixing is strong. This information would also serve as an important input for agencies concerned with urban planning and pollution mitigation. Despite these improvements in the near-surface concentrations, the simulated columnar aerosol optical depth (AOD) still remains largely underestimated vis-a-vis the satellite-retrieved products. These modifications will serve as a guideline for further model-improvement initiatives at a regional scale. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000472740900001 |
WOS关键词 | AIRBORNE PARTICULATE MATTER ; OCEAN EXPERIMENT ; HUMAN HEALTH ; AEROSOLS ; MODEL ; CLIMATE ; PERFORMANCE ; ABSORPTION ; IMPACT ; ALBEDO |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/184147 |
专题 | 地球科学 |
作者单位 | 1.Indian Inst Sci, Ctr Atmospher & Ocean Sci, Bangalore, Karnataka, India; 2.Indian Inst Sci, Divecha Ctr Climate Change, Bangalore, Karnataka, India; 3.Indian Inst Trop Meteorol, Pune, Maharashtra, India |
推荐引用方式 GB/T 7714 | Govardhan, Gaurav,Satheesh, Sreedharan Krishnakumari,Moorthy, Krishnaswamy Krishna,et al. Simulations of black carbon over the Indian region: improvements and implications of diurnality in emissions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(12):8229-8241. |
APA | Govardhan, Gaurav,Satheesh, Sreedharan Krishnakumari,Moorthy, Krishnaswamy Krishna,&Nanjundiah, Ravi.(2019).Simulations of black carbon over the Indian region: improvements and implications of diurnality in emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(12),8229-8241. |
MLA | Govardhan, Gaurav,et al."Simulations of black carbon over the Indian region: improvements and implications of diurnality in emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.12(2019):8229-8241. |
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