Climate Change Data Portal
| DOI | 10.1016/j.atmosenv.2020.117728 |
| Rain rate and radon daughters’ activity | |
| Bottardi C.; Albéri M.; Baldoncini M.; Chiarelli E.; Montuschi M.; Raptis K.G.C.; Serafini A.; Strati V.; Mantovani F. | |
| 发表日期 | 2020 |
| ISSN | 1352-2310 |
| 卷号 | 238 |
| 英文摘要 | During a precipitation a transient increase of gamma activity is generated by 214Pb and 214Bi, daughters of atmospheric 222Rn, which are collected by rain droplets and brought to the ground. A continuous monitoring of this gamma radiation can be an efficient alternative to a 222Rn direct measurement in clouds and allows for estimating rain-induced variations in environmental gamma radiation. This work presents the results of a seven months proximal gamma-ray spectroscopy experiment, specifically tailored for gathering reliable and unbiased estimates of atmospheric 214Pb gamma activity related to rainfalls. We developed a reproducible model for reconstructing the temporal evolution of the 214Pb net count rate during rain episodes as function of the rain rate. The effectiveness of the model is proved by an excellent linear correlation (r2 = 0.91) between measured and estimated 214Pb count rates. We observed that the sudden increase of 214Pb count rates (ΔC) is clearly related to the rain rate (R) by a power law dependence ΔC∝R0.50±0.03. We assessed that the radon daughter 214Pb content (G) of the rain water depends on the rain rate with G∝1/R0.48±0.03 and on the rain median volume diameter (λm) with G∝1/λm2.2. We proved that, for a fixed rainfall amount, lower is the rainfall intensity (i.e. the longer is the rain duration), higher is the radon daughters’ content of the rain water. © 2020 Elsevier Ltd |
| 关键词 | 214Pb count rate modellingRain 214Pb activity densityRain induced gamma activityRain median diameterRain radon daughters' contentRain rate |
| 语种 | 英语 |
| scopus关键词 | Gamma ray spectrometers; Gamma rays; Radon; Continuous monitoring; Direct measurement; Gamma-ray spectroscopy; Linear correlation; Power-law dependences; Rainfall intensity; Temporal evolution; Unbiased estimates; Rain; radon 222; radon daughter; rain; atmospheric chemistry; gamma radiation; power law; precipitation intensity; radon; rainwater; temporal evolution; aerosol; Article; cloud; cosmic radiation; gamma radiation; gamma spectrometry; precipitation; prediction; priority journal; soil moisture; time series analysis |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/249019 |
| 作者单位 | Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1, Ferrara, 44121, Italy; INFN, Legnaro National Laboratories, Viale dell'Università, 2, Legnaro, Padua, 35020, Italy; INFN, Ferrara Section, Via Saragat 1, Ferrara, 44121, Italy; GeoExplorer Impresa Sociale S.r.l., Via E. Vezzosi 15, Arezzo, 52100, Italy |
| 推荐引用方式 GB/T 7714 | Bottardi C.,Albéri M.,Baldoncini M.,等. Rain rate and radon daughters’ activity[J],2020,238. |
| APA | Bottardi C..,Albéri M..,Baldoncini M..,Chiarelli E..,Montuschi M..,...&Mantovani F..(2020).Rain rate and radon daughters’ activity.ATMOSPHERIC ENVIRONMENT,238. |
| MLA | Bottardi C.,et al."Rain rate and radon daughters’ activity".ATMOSPHERIC ENVIRONMENT 238(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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