| DOI: | 10.1016/j.atmosres.2018.02.005
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| Scopus记录号: | 2-s2.0-85045380376
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| 论文题名: | Rain-shadow: An area harboring “Gray Ocean” clouds |
| 作者: | Padmakumari B.; Maheskumar R.S.; Harikishan G.; Morwal S.B.; Kulkarni J.R.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2018
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| 卷: | 205 | | 起始页码: | 70
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| 结束页码: | 79
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| 语种: | 英语
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| 英文关键词: | Cloud droplet number concentration
; Cloud efficiency
; Cloud vertical motion
; Effective radius
; Liquid water content
; Monsoon congestus clouds
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| Scopus关键词: | Atmospheric thermodynamics
; Cloud seeding
; Clouds
; Drops
; Efficiency
; Fighter aircraft
; Characteristic value
; Cloud droplet number concentrations
; Convective clouds
; Effective radius
; Liquid water content
; Precipitation enhancement
; Rainfall simulations
; Vertical motions
; Rain
; cloud cover
; cloud droplet
; convective system
; water content
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| 英文摘要: | The characteristics of monsoon convective clouds over the rain-shadow region of north peninsular India have been investigated using in situ aircraft cloud microphysical observations collected during Cloud Aerosol Interaction and Precipitation Enhancement EXperiment (CAIPEEX). The parameters considered for characterization are: liquid water content (LWC), cloud vertical motion (updraft, downdraft: w), cloud droplet number concentration (CDNC) and effective radius (Re). The results are based on 15 research flights which were conducted from the base station Hyderabad during summer monsoon season. The clouds studied were developing congestus. The clouds have low CDNC and low updraft values resembling the oceanic convective clouds. The super-saturation in clouds is found to be low (≤0.2%) due to low updrafts. The land surface behaves like ocean surface during monsoon as deduced from Bowen ratio. Microphysically the clouds showed oceanic characteristics. However, these clouds yield low rainfall due to their low efficiency (mean 14%). The cloud parameters showed a large variability; hence their characteristic values are reported in terms of median values. These values will serve the numerical models for rainfall simulations over the region and also will be useful as a scientific basis for cloud seeding operations to increase the rainfall efficiency. The study revealed that monsoon convective clouds over the rain-shadow region are of oceanic type over the gray land, and therefore we christen them as “Gray Ocean” clouds. © 2018 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/108916
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| Appears in Collections: | 影响、适应和脆弱性
气候变化事实与影响
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作者单位: | Indian Institute of Tropical Meteorology, Pune, 411008, India
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| Recommended Citation: | |
Padmakumari B.,Maheskumar R.S.,Harikishan G.,et al. Rain-shadow: An area harboring “Gray Ocean” clouds[J]. Atmospheric Research,2018-01-01,205
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