CCPortal
DOI10.1029/2021JD034704
Remote Sensing of Electric Fields Observed Within Winter Precipitation During the 2020 Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) Field Campaign
Schultz C.J.; Harkema S.S.; Mach D.M.; Bateman M.; Lang T.J.; Heymsfield G.M.; McLinden M.L.; Li L.; Poellot M.; Sand K.
发表日期2021
ISSN2169-897X
卷号126期号:16
英文摘要Aircraft electric fields from NASA's Lightning Instrument Package (LIP) were coupled with other airborne and ground-based, and in situ measurements to understand electrification in winter clouds that did not produce lightning. The measurements were made during seven research flights by a NASA ER-2 during the 2020 Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) campaign. Observed total electric field magnitudes were as high as 80 V m−1 and variability in the electric field was observed along the flight path of the ER-2, indicating horizontal and/or vertical inhomogeneity in the cloud's electrical structure. X-band airborne radar data indicated 20-dBZ echo tops above 5 km in regions where electrification exceeded 10 V m−1. In these regions, 85-GHz brightness temperatures (TB) from an airborne radiometer were lower than 265 K, with the lowest TB (∼210 K) associated with ice scattering collocated with the strongest electric fields. In situ microphysical measurements from the NASA P-3 aircraft on February 7 indicated that regions near strong electric field contained supercooled water, rimed ice hydrometeors, ice water p- content as high as 1 g m−3, liquid water content as high as 0.15 g m−3, and supersaturation as high as 3.5%. These observations support the role of mixed phase microphysics in the generation of electric fields in clouds. In three case studies, ground based S-band polarimetric radar observed depolarization streaks in differential reflectivity near areas where the strongest electrification was observed. This observation reinforces the utility of depolarization streaks to identify areas of electrification prior to lightning occurrence. © 2021. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词depolarization; electrification; IMPACTS; microphysics; winter storms
来源期刊Journal of Geophysical Research: Atmospheres
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/237104
作者单位Earth Science Branch, NASA Marshall Space Flight Center, Huntsville, AL, United States; Department of Atmospheric Science, University of Alabama Huntsville, Huntsville, AL, United States; Science and Technology Institute, Universities Space Research Association, Huntsville, AL, United States; Goddard Space Flight Center, Greenbelt, MD, United States; Department of Atmospheric Science, University of North Dakota, Grand Forks, ND, United States
推荐引用方式
GB/T 7714
Schultz C.J.,Harkema S.S.,Mach D.M.,et al. Remote Sensing of Electric Fields Observed Within Winter Precipitation During the 2020 Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) Field Campaign[J],2021,126(16).
APA Schultz C.J..,Harkema S.S..,Mach D.M..,Bateman M..,Lang T.J..,...&Sand K..(2021).Remote Sensing of Electric Fields Observed Within Winter Precipitation During the 2020 Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) Field Campaign.Journal of Geophysical Research: Atmospheres,126(16).
MLA Schultz C.J.,et al."Remote Sensing of Electric Fields Observed Within Winter Precipitation During the 2020 Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) Field Campaign".Journal of Geophysical Research: Atmospheres 126.16(2021).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Schultz C.J.]的文章
[Harkema S.S.]的文章
[Mach D.M.]的文章
百度学术
百度学术中相似的文章
[Schultz C.J.]的文章
[Harkema S.S.]的文章
[Mach D.M.]的文章
必应学术
必应学术中相似的文章
[Schultz C.J.]的文章
[Harkema S.S.]的文章
[Mach D.M.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。