Analysis of climatic variability and snow cover in the Kaligandaki River Basin, Himalaya, Nepal

Mishra, Bhogendra; Babel, Mukand S.; Tripathi, Nimisha

doi:10.1007/s00704-013-0966-1

Cited by 61 publications

(45 citation statements)

References 29 publications

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“…Moreover, the authors stated that temporal resolution of MODIS and NOAA is better than IRS data, which means chances of getting cloud-free scene is more. Mishra et al (2014) also validated MODIS snow cover product with the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and concluded that both the data sets are in good agreement with each other. Therefore in the present study, MODIS Terra, 8-day composite land surface reflectance product (MOD09A1) was used to obtain SCA images.…”

Section: Satellite Datamentioning

confidence: 77%

“…Xu et al (2008) observed that the effect of precipitation on SCA is larger in the Tarim river basin than that of temperature. Mishra et al (2014) reported a negative trend in SCA with increasing trends in temperature and decreasing trend in precipitation during winter and spring season in the Kaligandaki river basin. That is why several researchers (Foster et al, 1983;Gleick, 1987;Xu et al, 2008) have considered snow as a sensitive indicator of climate change.…”

Section: Introductionmentioning

confidence: 95%

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Assessment of temporal dynamics of snow cover and its validation with hydro-meteorological data in parts of Chenab Basin, western Himalayas

Kour

Patel

Krishna

2016

Sci. China Earth Sci.

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The present investigation was conducted to analyze the temporal patterns of snow cover area% (SCA%), air temperature, snowfall and river discharge in parts of Chenab basin, western Himalayas. The relationship of mean SCA% with mean air temperature and river discharge was also tested using Pearson's product-moment correlation at 95% confidence limit and further sensitivity analysis of river discharge to SCA and SCA to air temperature was performed. Moderate Resolution Imaging Spectroradiometer (MODIS) 8-day surface reflectance product MOD09A1 was used to delineate SCA during the period 2000-2013. Moreover, variation in the lowest elevation from where snow cover area starts (LESCA) was also analyzed and its relationship with mean air temperature was also studied. Non-parametric method, Mann-Kendall test was employed to determine the trend in the SCA%, air temperature, snowfall and river discharge. The investigation carried out for three meteorological stations i.e. Batote, Reasi and Tandi revealed significant findings. At Batote and Reasi, statistically significant decreasing trends were observed over the period 2000 to 2012, for maximum, minimum and mean air temperature. Mean minimum SCA% exhibited a significant upward trend during 2000-2013 which is corroborated by the significantly increasing trend of mean annual snowfall (Tandi station) from 2000 to 2010. Further, significant decreasing trend of river discharge for the winter season at Batote station from 2000 to 2011 and decreasing trends in the maximum, minimum and mean air temperature at Batote and Reasi stations are also consistent with the increasing trend of SCA%. At both Batote and Reasi stations, mean SCA% exhibited significant negative relationship with the mean air temperature. On the other hand, LESCA exhibited positive correlation with the mean air temperature except in a few months, where negative relationship was seen. Sensitivity analysis of river discharge to SCA exhibited very low values of sensitivity coefficient in most of the months, indicating less sensitivity of river discharge to SCA. On the other hand, sensitivity coefficient of SCA to air temperature exhibited comparatively higher values which indicate SCA is more sensitive to air temperature.

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Section: Satellite Datamentioning

confidence: 77%

Section: Introductionmentioning

confidence: 95%

Assessment of temporal dynamics of snow cover and its validation with hydro-meteorological data in parts of Chenab Basin, western Himalayas

Kour

Patel

Krishna

2016

Sci. China Earth Sci.

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“…The increment was higher under RCP 8.5 than under RCP 4.5. The modified Mann-Kendall test [38] showed that there was a significant trend in rainfall for both scenarios with p-values less than 0.01 at the 99% significance level. RCP 4.5 exhibited an increasing slope of 2.49 mm/year, while RCP 8.5 showed a slope of 2.63 mm/year with the Thiel-Sen slope estimator.…”

Section: Future Rainfallmentioning

confidence: 93%

Impact of Climate Change on Water Resources of the Bheri River Basin, Nepal

Mishra

Nakamura

Babel

et al. 2018

Water

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Streamflow alteration is one of the most noticeable effects of climate change. This study explored the effects of climate change on streamflow in the Bheri River using the Soil and Water Assessment Tool (SWAT) model. Three General Circulation Models (GCMs) under two Representative Concentration Pathways (RCPs; 4.5 and 8.5) for the periods of 2020-2044, 2045-2069, and 2070-2099 were used to investigate the impact of climate change. Based on the ensemble of the three models, we observed an increasing trend in maximum and minimum temperatures at the rate of 0.025 • C/year and 0.033 • C/year, respectively, under RCP 4.5, and 0.065 • C/year and 0.071 • C/year under RCP 8.5 in the future. Similarly, annual rainfall will increase by 6.8-15.2% in the three future periods. The consequences of the increment in rainfall and temperature are reflected in the annual streamflow that is projected to increase by 6-12.5% when compared to the historical data of 1975-2005. However, on a monthly scale, runoff will decrease in July and August by up to 20% and increase in the dry period by up to 70%, which is favorable for water users.

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“…It is anticipated that the increasing rate of the average temperature in the Himalayas will be greater than the global average [1,2]. The increasing temperatures may affect the timing and quantity of precipitation and change water availability [3]. Furthermore, with changes in precipitation patterns, there is a greater possibility of climate-induced disasters, such as landslides, floods and droughts.…”

Section: Introductionmentioning

confidence: 99%

Household Perceptions about the Impacts of Climate Change on Food Security in the Mountainous Region of Nepal

2017

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Abstract:This study tried to understand the mountainous households' perception of climate change and its impacts on food security in the Lamjung district of Nepal. The study attempted to find out changes in households food security and daily activities in the face of climate change for the last twenty years. The study started with the 150 household surveys along with participatory rural appraisal to understand the climate change perception of local people and its impact on dimensions of food security. Households expressed different levels of perception in terms of climate change on food security. The result shows that most of the mountainous households experienced increased temperature, less rainfall in winter, an increasing number of natural disasters and the emergence of insects for the last twenty years. They perceived the role of climate change in decreased crop production, decreased dairy products and increased household work. The situation of food security is likely to be more vulnerable to climate change in the future. It was also observed that households have been using different autonomous adaptation measures, such as high yielding crop varieties, enhanced irrigation systems and fertilizers, to cope with the changing climate. Finally, the study recommended policy instruments to enhance food security in the mountainous region amidst changing climate.

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Analysis of climatic variability and snow cover in the Kaligandaki River Basin, Himalaya, Nepal

Cited by 61 publications

References 29 publications

Assessment of temporal dynamics of snow cover and its validation with hydro-meteorological data in parts of Chenab Basin, western Himalayas

Assessment of temporal dynamics of snow cover and its validation with hydro-meteorological data in parts of Chenab Basin, western Himalayas

Impact of Climate Change on Water Resources of the Bheri River Basin, Nepal

Household Perceptions about the Impacts of Climate Change on Food Security in the Mountainous Region of Nepal

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