| DOI: | 10.1016/j.atmosres.2018.12.020
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| Scopus记录号: | 2-s2.0-85059353106
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| 论文题名: | Rainfall enhancement in Karnataka state cloud seeding program “Varshadhare” 2017 |
| 作者: | Kulkarni J.R.; Morwal S.B.; Deshpande N.R.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2019
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| 卷: | 219 | | 起始页码: | 65
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| 结束页码: | 76
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| 语种: | 英语
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| 英文关键词: | Additional water generated
; Control-target area analysis
; Enhancement of rainfall
; High resolution surface rainfall data
; Karnataka Cloud Seeding Program 2017
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| Scopus关键词: | Rain
; Additional water generated
; Control target
; Glaciogenic seeding
; Karnataka
; Operational projects
; Rainfall data
; Temporal resolution
; Very high resolution
; Cloud seeding
; cloud seeding
; experimental design
; guideline
; hygroscopicity
; precipitation assessment
; rainfall
; raingauge
; India
; Karnataka
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| 英文摘要: | Operational cloud seeding program was conducted in the Karnataka State, India during 21 August to 7 November 2017 with robust, pre-established experimental design plan following the guidelines developed under Indian national CAIPEEX program. Hygroscopic and glaciogenic seeding were carried out using areal method. A very high resolution raingauge network (spatial resolution: 5 km, temporal resolution: 15 min) was used to measure the surface rainfall. Two approaches have been used for estimating the enhancement: (i) Rainfalls within 4-h after seeding was compared at station levels with the rainfalls prior to seeding. The analysis of 618 cases showed average enhancement of 27.9% above the natural rainfall. (ii) The floating control-target area rainfall analysis was used to estimate the natural rainfall that would have occurred without seeding. For understanding maximum absolute increase in the rainfall, 7 cases in the top 5% which were well distributed within seeding period (with 4 hygroscopic and 3 glaciogenic cases) have been analyzed. The maximum increase in rainfalls in hygroscopic/glaciogenic cases were 20.8/28.1 mm which are ~5/7 times higher than the mean daily rainfall (4.3 mm) during September–October. Additional water made available due to seeding has been estimated to be 2.1 TMC. The study showed that seeding became effective in increasing rainfall under the particular dynamic and thermodynamical conditions. This is a unique study to estimate the effect of operational cloud seeding in (i) enhancement of precipitation and (ii) availability of additional water. The results of the study may find basis for the operational programs in the world. © 2019 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/122322
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Indian Institute of Tropical Meteorology, Dr. Homi Bhabha Road, N.C.L. Post Office, Pune, Maharashtra, India
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| Recommended Citation: | |
Kulkarni J.R.,Morwal S.B.,Deshpande N.R.. Rainfall enhancement in Karnataka state cloud seeding program “Varshadhare” 2017[J]. Atmospheric Research,2019-01-01,219
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