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DOI | 10.1029/2019JD031806 |
Comment on "Retrieval of Atmospheric Fine Particulate Density Based on Merging Particle Size Distribution Measurements: Multi-instrument Observation and Quality Control at Shouxian" by Li et al. | |
Peng, Long1,2,3; Bi, Xinhui1,2 | |
2020-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:2 |
文章类型 | Editorial Material |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This work raises questions about the omission of Cunningham Slip Correction Factor (C-c(D)) in geometric equivalent diameter (D-p) conversions from the electric mobility diameter (D-m) and the aerodynamic diameter (D-a) in relation to the calculation of effective density (rho(e)) as defined by Li et al. (2018; https://doi.org/10.1029/2018JD028956). They reported that rho(e) could be calculated using the formula "(D-a/D-m)(2)," in which C-c(D) was not introduced into the conversion between two diameters involving Dm and D-p or D-a and D-p. However, these conversions, which ignored C-c(D) in the transition regime, are not supported by current studies; nor did the group demonstrate their rationality. This comment shows that an error of up to 24.7% could be caused by ignoring the C-c(D) during conversions between the D-p and D-m for particles with a dynamic shape factor of 2.50 and a D-m of 550 nm; an error of 5.6% could be caused by ignoring the C-c(D) during conversions between D-p and D-a for particles having a dynamic shape factor of 1.12, a density of 2.20 g/cm(3), and a D-a of 550 nm. The deviation of.e could be amplified by 55.5% and 11.2% due to the squared term in the formula. Therefore, this comment argues that it is irrational to ignore Cc(D) when calculating Dp and.e by using D-m and D-a. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521080000022 |
WOS关键词 | MOBILITY |
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/280018 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China; 2.Chinese Acad Sci, Guangdong Prov Key Lab Environm Resources Utiliza, Guangzhou, Peoples R China; 3.Univ Chinese Acad Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Peng, Long,Bi, Xinhui. Comment on "Retrieval of Atmospheric Fine Particulate Density Based on Merging Particle Size Distribution Measurements: Multi-instrument Observation and Quality Control at Shouxian" by Li et al.[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(2). |
APA | Peng, Long,&Bi, Xinhui.(2020).Comment on "Retrieval of Atmospheric Fine Particulate Density Based on Merging Particle Size Distribution Measurements: Multi-instrument Observation and Quality Control at Shouxian" by Li et al..JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(2). |
MLA | Peng, Long,et al."Comment on "Retrieval of Atmospheric Fine Particulate Density Based on Merging Particle Size Distribution Measurements: Multi-instrument Observation and Quality Control at Shouxian" by Li et al.".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.2(2020). |
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