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DOI | 10.1016/j.atmosres.2018.01.012 |
Assessment of 1D and 3D model simulated radiation flux based on surface measurements and estimation of aerosol forcing and their climatological aspects | |
Subba, T.1; Gogoi, M. M.3; Pathak, B.1,2; Ajay, P.1; Bhuyana, P. K.1; Solmon, F.4 | |
2018-05-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 204页码:110-127 |
文章类型 | Article |
语种 | 英语 |
国家 | India; France |
英文摘要 | Ground reaching solar radiation flux was simulated using a 1-dimensional radiative transfer (SBDART) and a 3-dimensional regional climate (RegCM 4.4) model and their seasonality against simultaneous surface measurements carried out using a CNR4 net Radiometer over a sub-Himalayan foothill site of south-east Asia was assessed for the period from March 2013-January 2015. The model simulated incoming fluxes showed a very good correlation with the measured values with correlation coefficient R-2 similar to 0.97. The mean bias errors between these two varied from -40 W m(-2) to +7 W m(-2) with an overestimation of 2-3% by SBDART and an underestimation of 2-9% by RegCM. Collocated measurements of the optical parameters of aerosols indicated a reduction in atmospheric transmission path by similar to 20% due to aerosol load in the atmosphere when compared with the aerosol free atmospheric condition. Estimation of aerosol radiative forcing efficiency (ARFE) indicated that the presence of black carbon (BC, 10-15%) led to a surface dimming by -26.14 W m(-2) tau(-1) and a potential atmospheric forcing of + 43.04 W m(-2) tau(-1). BC alone is responsible for > 70% influence with a major role in building up of forcing efficiency of + 55.69 W m(-2) tau(-1) (composite) in the atmosphere. On the other hand, the scattering due to aerosols enhance the outgoing radiation at the top of the atmosphere (ARFE(TOA) similar to -12.60 W m(-2) omega(-1)), the absence of which would have resulted in ARFE(TOA) of similar to+16.91 W m(-2) tau(-1) (due to BC alone). As a result, similar to 3/4 of the radiation absorption in the atmosphere is ascribed to the presence of BC. This translated to an atmospheric heating rate of similar to 1.0 K day(-1), with similar to 0.3 K day(-1) heating over the elevated regions (2-4 km) of the atmosphere, especially during pre-monsoon season. Comparison of the satellite (MODIS) derived and ground based estimates of surface albedo showed seasonal difference in their magnitudes (R-2 similar to 0.98 during retreating monsoon and winter; similar to 0.65 during pre-monsoon and monsoon), indicating that the reliability of the satellite data for aerosol radiative forcing estimation is more during the retreating and winter seasons. |
英文关键词 | Solar radiation SBDART RegCM4.4 Surface albedo Aerosol radiative forcing efficiency Heating rate |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428494800010 |
WOS关键词 | TROPICAL COASTAL STATION ; LARGE-SCALE MODELS ; OPTICAL-PROPERTIES ; SOLAR-RADIATION ; INDIAN-OCEAN ; DUST STORMS ; ARABIAN SEA ; TEMPORAL CHARACTERISTICS ; PHYSICAL-PROPERTIES ; BOUNDARY-LAYERS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/15213 |
专题 | 地球科学 |
作者单位 | 1.Dibrugarh Univ, Ctr Atmospher Studies, Dibrugarh 786004, Assam, India; 2.Dibrugarh Univ, Dept Phys, Dibrugarh 786004, Assam, India; 3.ISRO, Vikram Sarabhai Space Ctr, Space Phys Lab, Trivandrum 695022, Kerala, India; 4.Observ Midi Pyrenees, Lab Aerol, Toulouse, France |
推荐引用方式 GB/T 7714 | Subba, T.,Gogoi, M. M.,Pathak, B.,et al. Assessment of 1D and 3D model simulated radiation flux based on surface measurements and estimation of aerosol forcing and their climatological aspects[J]. ATMOSPHERIC RESEARCH,2018,204:110-127. |
APA | Subba, T.,Gogoi, M. M.,Pathak, B.,Ajay, P.,Bhuyana, P. K.,&Solmon, F..(2018).Assessment of 1D and 3D model simulated radiation flux based on surface measurements and estimation of aerosol forcing and their climatological aspects.ATMOSPHERIC RESEARCH,204,110-127. |
MLA | Subba, T.,et al."Assessment of 1D and 3D model simulated radiation flux based on surface measurements and estimation of aerosol forcing and their climatological aspects".ATMOSPHERIC RESEARCH 204(2018):110-127. |
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