ENSO relationship to the rainfall of Sri Lanka

Kane, R. P.

doi:10.1002/(sici)1097-0088(19980630)18:8<859::aid-joc264>3.0.co;2-w

Cited by 21 publications

(15 citation statements)

References 22 publications

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“…Suppiah's (1997) study indicated that La Niña events result in above-normal rainfall over Sri Lanka during the SWM season. Similarly, Kane (1998) found that Sri Lanka experienced 'drought' during the SWM season in the years marked by a pronounced El Niño ('unambiguous' ENSO in his terminology). Our study showed an increase in SWM precipitation during La Niña years only at two stations (Batticaloa and Jaffna) along the eastern and northern coastal areas, suggesting that the whole of Sri Lanka did not respond to these events in the same manner.…”

Section: Discussionsupporting

confidence: 91%

“…As for the SIM season, for which our study demonstrated significantly greater rainfall during El Niño years than during La Niña years at 13 out of the 15 stations, Suppiah (1997) and Kane (1998) also found positive rainfall anomalies for El Niño years and negative anomalies for La Niña years that were in close agreement with the present study. The 13 stations displaying a significant difference with regard to SIM precipitation receive between 52 (Mannar) and 111 mm (Kurunegala) more SIM rainfall per month during El Niño years than during La Niña years.…”

Section: Discussionmentioning

confidence: 99%

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Precipitation trends in Sri Lanka since the 1870s and relationships to El Niño–southern oscillation

Malmgren

Hulugalla

Hayashi

et al. 2003

Intl Journal of Climatology

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Precipitation trends in Sri Lanka since the 1870s and relationships to El Niño–southern oscillation

Malmgren

Hulugalla

Hayashi

et al. 2003

Intl Journal of Climatology

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“…The relationship between ENSO extremes and rainfall in Sri Lanka has been recognized for two decades (Rasmussen and Carpenter, 1983, Ropelewski and Halpert, 1987, 1989Suppiah and Yoshino, 1986;Suppiah 1997Suppiah , 1998Kane, 1998;Sumathipala and Punyadeva, 1998;Punyawardena and Cherry, 1999). A linkage between agricultural production and ENSO has been established in India (Parathasarthy et al, 1988;Gadgil, 1996), Zimbabwe (Cane et al, 1994;Phillips et al, 1998), the southeastern USA (Hansen et al, 1998) and elsewhere.…”

Section: Introductionmentioning

confidence: 99%

El Niño–southern oscillation influences on rice production in Sri Lanka

Zubair

2002

Intl Journal of Climatology

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Despite advances in the capacity to predict the evolution of the El Niño-southern oscillation (ENSO) phenomenon and advances in understanding the influence of ENSO on rainfall in tropical regions such as Sri Lanka, there has been limited use of climate predictions for agricultural decision-making. Climatic fluctuations have a profound influence on the cultivation of crops such as rice, which is the staple food in Sri Lanka. Here, the relationship between the sea-surface temperature-based ENSO index of NINO3.4, rainfall and the departure of Sri Lankan rice production from long-term trends, is analysed for the 'Maha' (October to March) and 'Yala' (April to September) cultivation seasons between 1952 and 1997.During the El Niño phase, the Maha rice production frequently increased (10 out of 15 seasons) and the Yala production frequently decreased (10 out of 14 seasons). Conversely, during the La Niña phase, the Maha production decreased (seven out of ten seasons) and Yala production increased (six out of eight seasons). Floods, state interventions, civil disturbances, fertilizer price hikes and extreme anomalies in the previous season were noted in the majority of seasons in which these ENSO-production linkages were violated.The correlation of the Maha rice production anomaly with the average NINO3.4 from October to December was significant at the 5% level and that with the aggregate October to December rainfall was significant at the 1% level. Yala rice production showed a significant relationship with concurrent NINO3.4 and a strong correlation (r = 0.60) with the previous season's rainfall. Yala cultivation is water constrained, and carryover storage from the previous season is often used to determine the extent of planting.The relationships between ENSO and seasonal rice production and the relationship between Yala rice production and previous Maha rainfall could be used for agricultural management and policy formulation.

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“…significant SOI-rainfall relationships for Sri Lanka were detailed for the October-November and July-August seasons (Suppiah, 1989(Suppiah, , 1996(Suppiah, , 1997Kane, 1998;Malmgren et al, 2003). In recent decades, there has been progress in predicting the evolution of the ENSO phenomena in the Pacific Ocean (Goddard et al, 2001).…”

mentioning

confidence: 99%

“…Previous detailed analyses of ENSO-rainfall relationships for Sri Lanka (Suppiah, 1989(Suppiah, , 1996(Suppiah, , 1997Fernando et al, 1995;Sumathipala and Punyadeva, 1998;Kane, 1998;Punyawardena and Cherry, 1999;Malmgren et al, 2003) were based on seasons defined by wind-directions, which do not match with the agricultural seasons. The seasons in use also ranged from 2 to 5 months, while contemporary seasonal predictions are most developed at a 3-month time scale.…”

mentioning

confidence: 99%

Predictability of Sri Lankan rainfall based on ENSO

Zubair¹,

Siriwardhana

Chandimala

et al. 2007

Intl Journal of Climatology

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Investigating the year-round rainfall of Sri Lanka provides understanding into the South Asian monsoon system as it compliments studies on the Indian summer monsoon. The El Niño-Southern Oscillation (ENSO) is a primary mode of climate variability of this area. Here, the predictability of Sri Lanka rainfall based on ENSO is quantified based on composite analysis, correlations and contingency tables. The rainfall is modestly predictable based on ENSO

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ENSO relationship to the rainfall of Sri Lanka

Cited by 21 publications

References 22 publications

Precipitation trends in Sri Lanka since the 1870s and relationships to El Niño–southern oscillation

Precipitation trends in Sri Lanka since the 1870s and relationships to El Niño–southern oscillation

El Niño–southern oscillation influences on rice production in Sri Lanka

Predictability of Sri Lankan rainfall based on ENSO

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