Analysis of long-term rainfall trends and change point in West Bengal, India

2019 ◽  
Vol 138 (3-4) ◽  
pp. 1647-1666 ◽  
Author(s):  
Suman Kumar Kundu ◽  
Tarun Kumar Mondal
Keyword(s):  
Change Point ◽  
West Bengal ◽  
Rainfall Trends

scholarly journals Variability of southwest monsoon rainfall over West Bengal

MAUSAM ◽  
2022 ◽  
Vol 44 (4) ◽  
pp. 353-358
Author(s):  
B. BISWAS ◽  
K. GUPTA
Keyword(s):  
Seasonal Variations ◽  
West Bengal ◽  
Monsoon Rainfall ◽  
Southwest Monsoon ◽  
Seasonal Rainfall ◽  
Northern Latitudes ◽  
Rainfall Trends ◽  
Latitudinal Variations ◽  
Southwest Monsoon Rainfall

Monthly and seasonal variations of southwest monsoon rainfall over the districts of Gangetic and Sub-Himalayan West Bengal are presented and their differences discussed. Latitudinal variations of monsoon rainfall are brought out. Decadal means of seasonal rainfall over plains are compared with those at higher elevations and northern latitudes. An attempt is made to study long term rainfall trends.

scholarly journals Spatio-temporal variation of rainfall over Bihar State, India

2018 ◽  
Vol 36 (1) ◽  
pp. 183-197 ◽  
Author(s):  
Pratibha Warwade ◽  
Shalini Tiwari ◽  
Sunil Ranjan ◽  
Surendra K. Chandniha ◽  
Jan Adamowski
Keyword(s):  
Change Point ◽  
Winter Rainfall ◽  
Rainfall Trends ◽  
Before And After ◽  
Spatio Temporal ◽  
Bihar State ◽  
First Time ◽  
Cumulative Deviation ◽  
Shift Change

AbstractThis study detected, for the first time, the long term annual and seasonal rainfall trends over Bihar state, India, between 1901 and 2002. The shift change point was identified with the cumulative deviation test (cumulative sum – CUSUM), and linear regression. After the shift change point was detected, the time series was subdivided into two groups: before and after the change point. Arc-Map 10.3 was used to evaluate the spatial distribution of the trends. It was found that annual and monsoon rainfall trends decreased significantly; no significant trends were observed in pre-monsoon, monsoon, post-monsoon and winter rainfall. The average decline in rainfall rate was –2.17 mm·year−1and –2.13 mm·year−1for the annual and monsoon periods. The probable change point was 1956. The number of negative extreme events were higher in the later period (1957–2002) than the earlier period (1901–1956).

scholarly journals "Communist" dispossession meets "reactionary" resistance

Focaal ◽  
2009 ◽  
Vol 2009 (54) ◽  
pp. 89-96 ◽  
Author(s):  
Projit Bihari Mukharji
Keyword(s):  
Communist Party ◽  
West Bengal ◽  
Present Situation ◽  
The State ◽  
Political Subjectivity ◽  
Self Reflection ◽  
Term Change ◽  
Communist Government ◽  
Set Up

The reflections in this article were instigated by the repeated and brutal clashes since 2007 between peasants and the state government’s militias—both official and unofficial—over the issue of industrialization. A communist government engaging peasants violently in order to acquire and transfer their lands to big business houses to set up capitalist enterprises seemed dramatically ironic. De- spite the presence of many immediate causes for the conflict, subtle long-term change to the nature of communist politics in the state was also responsible for the present situation. This article identifies two trends that, though significant, are by themselves not enough to explain what is happening in West Bengal today. First, the growth of a culture of governance where the Communist Party actively seeks to manage rather than politicize social conflicts; second, the recasting of radical political subjectivity as a matter of identity rather than an instigation for critical self-reflection and self-transformation.

Denied Violence, Glorified Fighting: Spiritual Discipline and Controversy in Ananda Marga

2008 ◽  
Vol 12 (1) ◽  
pp. 3-25 ◽  
Author(s):  
Raphaëël Voix
Keyword(s):  
West Bengal ◽  
Religious Movement ◽  
Spiritual Discipline ◽  
Internal Characteristic ◽  
History Of ◽  
Anthropological Fieldwork

This article tackles the issue of violence inside Ananda Marga, a contemporary Indian religious movement based in West Bengal. It analyzes a controversy Ananda Marga has been through and questions its role within the movement by examining its link with an internal characteristic of the group: an initiatory process into asceticism. Based on long-term anthropological fieldwork in India, I describe the structure of Ananda Marga and then distinguish between the "history" of the movement, which is written and given collectively, and the "stories" of the movement, which are told orally and individually. By confronting these different versions of the same event, I argue that the controversy can be seen as a part of a larger initiatory process in which committed disciples gradually acknowledge the legitimacy of violence.

scholarly journals Occurrence of L1014F and L1014S mutations in insecticide resistant Culex quinquefasciatus from filariasis endemic districts of West Bengal, India

2022 ◽  
Vol 16 (1) ◽  
pp. e0010000
Author(s):  
Priyanka Rai ◽  
Dhiraj Saha
Keyword(s):  
Culex Quinquefasciatus ◽  
West Bengal ◽  
Economic Status ◽  
Minor Role ◽  
Resistance Development ◽  
Vector Population ◽  
A Minor ◽  
First Time

Introduction Lymphatic filariasis causes long term morbidity and hampers the socio-economic status. Apart from the available treatments and medication, control of vector population Culex quinquefasciatus Say through the use of chemical insecticides is a widely applied strategy. However, the unrestrained application of these insecticides over many decades has led to resistance development in the vectors. Methods In order to determine the insecticide susceptibility/resistance status of Cx. quinquefasciatus from two filariasis endemic districts of West Bengal, India, wild mosquito populations were collected and assayed against six different insecticides and presence of L1014F; L1014S kdr mutations in the voltage-gated sodium channel gene was also screened along with the use of synergists to evaluate the role of major detoxifying enzymes in resistance development. Results The collected mosquito populations showed severe resistance to insecticides and the two synergists used–PBO (piperonyl butoxide) and TPP (triphenyl phosphate), were unable to restore the susceptibility status of the vector thereupon pointing towards a minor role of metabolic enzymes. kdr mutations were present in the studied populations in varying percent with higher L1014F frequency indicating its association with the observed resistance to pyrethroids and DDT. This study reports L1014S mutation in Cx. quinquefasciatus for the first time.

scholarly journals Rainfall Threshold for Shallow Landslides Initiation and Analysis of Long-Term Rainfall Trends in a Mediterranean Area

Atmosphere ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1367
Author(s):  
Anna Roccati ◽  
Guido Paliaga ◽  
Fabio Luino ◽  
Francesco Faccini ◽  
Laura Turconi
Keyword(s):  
Kendall Test ◽  
Shallow Landslides ◽  
Landslide Risk ◽  
Rainfall Time Series ◽  
Ligurian Sea ◽  
Extreme Rainfall Events ◽  
Mediterranean Countries ◽  
Rainfall Trends ◽  
The Impact

The effects of climate change on landslide activity may have important environmental, socio-economic, and political consequences. In the last decades, several short-term extreme rainfall events affected Mediterranean regions, resulted in damaging geo-hydrological processes and casualties. It is unequivocal that the impact of landslides in several Mediterranean countries is increasing with time, but until now, there has been little or no quantitative data to support these increases. In this paper, both rainfall conditions for the occurrence of shallow landslides and rainfall trends were investigated in the Portofino promontory, which extends in the Ligurian Sea, where heavy rainfall and related ground effects often occur. Adopting a frequentist approach, the empirical intensity-duration threshold was estimated. Our findings highlight that the rainfall intensity required to trigger landslides is lower for the same duration than those expected in other similar environments, suggesting a high susceptibility to rainfall-induced landslides in the Portofino territory. Further, the Mann-Kendall test and Hurst exponent were used for detecting potential trends. Analysis of long-term rainfall time series showed statistically significant increasing trends in short duration precipitation occurrence and rainfall rates, suggesting a possible future scenario with a more frequent exceedance of the threshold triggering value and an increase of landslide risk.

scholarly journals Long term effect of climate change on rainfall in northwest Iraq

2014 ◽  
Vol 4 (3) ◽  
Author(s):  
Nadhir Al-Ansari ◽  
Mawada Abdellatif ◽  
Salahalddin Ali ◽  
Sven Knutsson
Keyword(s):  
Climate Change ◽  
Management Strategies ◽  
Daily Rainfall ◽  
Annual Rainfall ◽  
Water Shortages ◽  
Intergovernmental Panel ◽  
Continuous Decrease ◽  
Rainfall Trends ◽  
Semi Arid Region

AbstractMiddle East, like North Africa, is considered as arid to semi-arid region. Water shortages in this region, represents an extremely important factor in stability of the region and an integral element in its economic development and prosperity. Iraq was an exception due to presence of Tigris and Euphrates Rivers. After the 1970s the situation began to deteriorate due to continuous decrease in discharges of these rivers, are expected to dry by 2040 with the current climate change. In the present paper, long rainfall trends up to the year 2099 were studied in Sinjar area, northwest of Iraq, to give an idea about its future prospects. Two emission scenarios, used by the Intergovernmental Panel on Climate Change (A2 and B2), were employed to study the long term rainfall trends in northwestern Iraq. All seasons consistently project a drop in daily rainfall for all future periods with the summer season is expected to have more reduction compared to other seasons. Generally the average rainfall trend shows a continuous decrease. The overall average annual rainfall is slightly above 210 mm. In view of these results, prudent water management strategies have to be adopted to overcome or mitigate consequences of future severe water crisis.

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