DOI: 10.1175/JCLI-D-16-0028.1
Scopus记录号: 2-s2.0-84995471066
论文题名: Differences in the climatological characteristics of precipitation between active and break spells of the Indian summer monsoon
作者: Narayana Rao T. ; Saikranthi K. ; Radhakrishna B. ; Vijaya Bhaskara Rao S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 21 起始页码: 7797
结束页码: 7814
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Rain
; Rain gages
; Convective clouds
; Hydrometeorology
; Monsoons
; Radars/radar observations
; Stratiform clouds
; Precipitation (meteorology)
英文摘要: Climatological characteristics of precipitation during the active and break spells of the monsoon are studied using 15 years of TRMM measurements. The spatial variation of rain fraction suggests that most of the seasonal rainfall occurs in spells of active monsoon over India, except for the zones along the east coast. The broader reflectivity distribution at higher altitudes and larger average storm height during active spells indicate the high prevalence of deep systems during this spell. The spatial distribution of the occurrence and fraction of different types of rain exhibits large variability from land to ocean and between the spells. The higher occurrence and fraction of stratiform rain during the active spell, particularly over the core monsoon zone, is due to the prevalence of organized mesoscale systems with large stratiform portions. The break spells are characterized by higher occurrence of shallow rain and larger fraction of convective rain. While an evening peak is observed over land during the break spell, the phase of the diurnal cycle exhibits large spatial variability during the active spell. The rainfall peaks from late night to midnight in southeastern India and in the morning near the foothills of the Himalayas during the active spell. The diurnal and semidiurnal components together explain more than 90% of total variance over many of the zones during both spells. The observed differences in precipitation between the spells are discussed in light of the differences in synoptic- and mesoscale mechanisms responsible for the production of precipitation. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50334
Appears in Collections: 气候变化事实与影响
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作者单位: National Atmospheric Research Laboratory, Gadanki, India; Indian Institute of Science, Bangalore, India; Department of Physics, Sri Venkateswara University, Tirupati, India
Recommended Citation:
Narayana Rao T.,Saikranthi K.,Radhakrishna B.,et al. Differences in the climatological characteristics of precipitation between active and break spells of the Indian summer monsoon[J]. Journal of Climate,2016-01-01,29(21)