Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD026272 |
Quantifying the effect of riming on snowfall using ground-based observations | |
Moisseev, Dmitri1,2; von Lerber, Annakaisa2; Tiira, Jussi1 | |
2017-04-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | Ground-based observations of ice particle size distribution and ensemble mean density are used to quantify the effect of riming on snowfall. The rime mass fraction is derived from these measurements by following the approach that is used in a single ice-phase category microphysical scheme proposed for the use in numerical weather prediction models. One of the characteristics of the proposed scheme is that the prefactor of a power law relation that links mass and size of ice particles is determined by the rime mass fraction, while the exponent does not change. To derive the rime mass fraction, a mass-dimensional relation representative of unrimed snow is also determined. To check the validity of the proposed retrieval method, the derived rime mass fraction is converted to the effective liquid water path that is compared to microwave radiometer observations. Since dual-polarization radar observations are often used to detect riming, the impact of riming on dual-polarization radar variables is studied for differential reflectivity measurements. It is shown that the relation between rime mass fraction and differential reflectivity is ambiguous, other factors such as change in median volume diameter need also be considered. Given the current interest on sensitivity of precipitation to aerosol pollution, which could inhibit riming, the importance of riming for surface snow accumulation is investigated. It is found that riming is responsible for 5% to 40% of snowfall mass. The study is based on data collected at the University of Helsinki field station in Hyytiala during U.S. Department of Energy Biogenic Aerosols Effects on Clouds and Climate (BAECC) field campaign and the winter 2014/2015. In total 22 winter storms were analyzed, and detailed analysis of two events is presented to illustrate the study. |
英文关键词 | snowfall riming precipitation cloud physics dual-polarization weather radar aerosol-cloud-precipitation interaction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400172000020 |
WOS关键词 | T-MATRIX COMPUTATIONS ; POLARIMETRIC RADAR ; SNOWFLAKE AGGREGATION ; SOLID PRECIPITATION ; CLOUD MICROPHYSICS ; VIDEO DISDROMETER ; PART I ; ICE ; PARTICLES ; MASS |
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/33325 |
专题 | 气候变化 |
作者单位 | 1.Univ Helsinki, Dept Phys, Helsinki, Finland; 2.Finnish Meteorol Inst, Helsinki, Finland |
推荐引用方式 GB/T 7714 | Moisseev, Dmitri,von Lerber, Annakaisa,Tiira, Jussi. Quantifying the effect of riming on snowfall using ground-based observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(7). |
APA | Moisseev, Dmitri,von Lerber, Annakaisa,&Tiira, Jussi.(2017).Quantifying the effect of riming on snowfall using ground-based observations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(7). |
MLA | Moisseev, Dmitri,et al."Quantifying the effect of riming on snowfall using ground-based observations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.7(2017). |
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