DOI: 10.1002/grl.50986
论文题名: In situ observations of supercooled liquid clouds over the Southern Ocean during the HIAPER Pole-to-Pole Observation campaigns
作者: Chubb T.H. ; Jensen J.B. ; Siems S.T. ; Manton M.J.
刊名: Geophysical Research Letters
ISSN: 0094-8473
EISSN: 1944-8204
出版年: 2013
卷: 40, 期: 19 起始页码: 5280
结束页码: 5285
语种: 英语
英文关键词: Southern Ocean clouds
; Supercooled liquid clouds
Scopus关键词: Environmental researches
; Meteorological condition
; Microphysical property
; Pristine environments
; Satellite observations
; Southern ocean
; Supercooled liquid water
; Supercooled liquids
; Cryogenic liquids
; Drops
; Life cycle
; Oceanography
; Rain
; Supercooling
; Poles
; climatology
; cloud water
; concentration (composition)
; droplet
; precipitation (climatology)
; pristine environment
; satellite imagery
; supercooling
; Southern Ocean
英文摘要: Clouds over the Southern Ocean exist in a pristine environment that results in unique microphysical properties. However, in situ observations of these clouds are rare, and the dominant precipitation processes are unknown. Uncertainties in their life cycles and radiative properties make them interesting from a weather and climate perspective. Data from the standard cloud physics payload during the High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) Pole-to-Pole Observations global transects provide a unique snapshot the nature of low-level clouds in the Southern Ocean. High quantities of supercooled liquid water (up to 0.47gm-3) were observed in clouds as cold as -22°C during two flights in different seasons and different meteorological conditions, supporting climatologies inferred from satellite observations. Cloud droplet concentrations were calculated from mean droplet size and liquid water concentrations, and were in the range of 30-120cm-3, which is fairly typical for the pristine Southern Ocean environment. Ice in nonprecipitating or lightly precipitating clouds was found to be rare, while drizzle drops with diameter greater than 100μm formed through warm rain processes were widespread. Large, pristine crystals were commonly seen in very low concentrations below cloud base. Key Points SLW observed in all low-level cloud profiles in HIPPO RF2.06 and RF3.06 Very low ice concentrations observed, in spite of very cold temperatures Frequent large drops indicate that warm rain process is important for the SO ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884867223&doi=10.1002%2fgrl.50986&partnerID=40&md5=ecfcf6700bbe072d6102a6be69b48c53
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5737
Appears in Collections: 气候减缓与适应
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作者单位: School of Mathematical Sciences, Monash University, PO Box 28 M, Melbourne, VIC 3800, Australia
Recommended Citation:
Chubb T.H.,Jensen J.B.,Siems S.T.,et al. In situ observations of supercooled liquid clouds over the Southern Ocean during the HIAPER Pole-to-Pole Observation campaigns[J]. Geophysical Research Letters,2013-01-01,40(19).