Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD030057 |
Spatioseasonal Variations of Atmospheric Ammonia Concentrations Over the United States: Comprehensive Model-Observation Comparison | |
Nair, Arshad Arjunan; Yu, Fangqun; Luo, Gan | |
2019-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:12页码:6571-6582 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Atmospheric ammonia plays an important role in a number of environmental issues, including new particle formation and aerosol indirect radiative forcing. Over the United States, atmospheric ammonia has seen an increasing trend due in most part to the declining SO2 and NOx emissions. We conduct the first comprehensive assessment of multiyear Goddard Earth Observing System (GEOS)-Chem simulated ammonia concentration ([NH3]) over conterminous United States along with surface observations from all 90 National Atmospheric Deposition Program Ammonia Monitoring Network (AMoN) sites that have at least 2 years of continuous measurements. Model-simulated [NH3] is along empirically expected lines with regard to temporal trends, seasonal variations, and spatial distribution. GEOS-Chem-simulated [NH3], compared to AMoN observed values, has weighted average correlation (tau) of 0.50 0.15 and mean fractional bias (MFB) of -8.8 56%. Most sites (63 out of 90) have -60% < MFB < +60%. The deviations from observed values vary spatially and seasonally, and there is significant wintertime underestimation (-44 58%) across most of conterminous United States (except the Pacific states). The largest positive deviations occur in the Pacific states (101 46%) and the largest negative deviations in the Southern Plain states (-73 +/- 39%) and the Mountain states (-73 +/- 84%), both in the winter months. Over the Great Plains region, GEOS-Chem simulated [NH3] shows a much stronger dependence to emissions than AMoN observed [NH3], indicating scope for improved representation of emissions for the region. Over Southeast United States, there appears to be the strong effect of the changing emissions of SO2 and NOx in both modeled and observed [NH3]. |
英文关键词 | atmospheric ammonia spatiotemporal variation model-observation comparison new particle formation emission reduction ecosystem |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477800000040 |
WOS关键词 | NITROGEN DEPOSITION ; REDUCED NITROGEN ; EMISSIONS ; AEROSOL ; TRENDS ; SIMULATION ; SULFUR |
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/184193 |
专题 | 气候变化 |
作者单位 | SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12222 USA |
推荐引用方式 GB/T 7714 | Nair, Arshad Arjunan,Yu, Fangqun,Luo, Gan. Spatioseasonal Variations of Atmospheric Ammonia Concentrations Over the United States: Comprehensive Model-Observation Comparison[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(12):6571-6582. |
APA | Nair, Arshad Arjunan,Yu, Fangqun,&Luo, Gan.(2019).Spatioseasonal Variations of Atmospheric Ammonia Concentrations Over the United States: Comprehensive Model-Observation Comparison.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(12),6571-6582. |
MLA | Nair, Arshad Arjunan,et al."Spatioseasonal Variations of Atmospheric Ammonia Concentrations Over the United States: Comprehensive Model-Observation Comparison".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.12(2019):6571-6582. |
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