GSTDTAP
DOI10.1002/joc.6113
Inconsistency in the frequency of rainfall events in the Indian summer monsoon season
Prathipati, Vinay K.; Naidu, C. V.; Konatham, Prasanna
2019-11-15
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
出版年2019
卷号39期号:13页码:4907-4923
文章类型Article
语种英语
国家India
英文摘要

In global warming, India is adversely affected by weather extremes. Summer monsoon contributes about 70% of annual mean rainfall to India by mode of an ensemble of synoptic disturbances and intense events. These events bring extreme amounts of rainfall in very few days. We have studied the anomalies of rainfall events for wet days (>0 mm rainfall), dry days (=0 mm), little rainfall days (>0 to <20mm), moderate rainfall days (>= 20mm to <60mm), heavy rainfall days (>= 60 to <100mm) and very heavy rainfall days (>= 100mm) during the period, 1901-1930; 1931-1960; 1961-1990 and 1991-2015 using India Meteorological Department (IMD) rainfall data. In the present scenario, even though an extensive increase in frequency of lows forming in the Bay of Bengal is observed, only a few are intensified into depressions and above stages. Alternatively, monsoon circulation is trailing its strength; therefore extreme (heavy and very heavy rainfall) events came into existence to balance the mean rainfall activity. The rise in these events may be due to an increasing inconsistency of the strength of low-level jet, an increase of sea surface temperature over the Arabian Sea and dynamic flow of moisture supply to inland from neighbourhood seas. An increase in the frequency of extreme rainfall events is seen over Konkan & Goa, Madhya Maharashtra, Jammu & Kashmir, central Northeast India (CNEI) and west central India (WCI) in the recent years (25years) compared to previous 9 decades. Whereas, a decrease in the frequencies of little and moderate rainfall events are observed over the parts of the Western Ghats, Northeast India, WCI and CNEI. There is an increasing trend in the inconsistency of daily rainfall activity due to an increase in the frequency of extreme events in the global warming era.


英文关键词cyclonic systems global warming rainfall events SST
领域气候变化
收录类别SCI-E
WOS记录号WOS:000492795100001
WOS关键词CLIMATE-CHANGE ; INCREASING TREND ; EXTREME RAINFALL ; TEMPERATURE ; 20TH-CENTURY ; OSCILLATION ; SST
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/225424
专题环境与发展全球科技态势
作者单位Andhra Univ, Dept Meteorol & Oceanog, Coll Sci & Technol, Visakhapatnam 530003, Andhra Pradesh, India
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GB/T 7714
Prathipati, Vinay K.,Naidu, C. V.,Konatham, Prasanna. Inconsistency in the frequency of rainfall events in the Indian summer monsoon season[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(13):4907-4923.
APA Prathipati, Vinay K.,Naidu, C. V.,&Konatham, Prasanna.(2019).Inconsistency in the frequency of rainfall events in the Indian summer monsoon season.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(13),4907-4923.
MLA Prathipati, Vinay K.,et al."Inconsistency in the frequency of rainfall events in the Indian summer monsoon season".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.13(2019):4907-4923.
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