Refine your search
Collections
Co-Authors
Journals
Year
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Ganju, Ashwagosha
- Observations of Snow-Meteorological Parameters in Gangotri Glacier Region
Abstract Views :219 |
PDF Views:95
Authors
Affiliations
1 Snow and Avalanche Study Establishment, Research and Development Centre, Chandigarh 160 036, IN
1 Snow and Avalanche Study Establishment, Research and Development Centre, Chandigarh 160 036, IN
Source
Current Science, Vol 109, No 11 (2015), Pagination: 2116-2120Abstract
In this communication analysis of the snow-meteorological parameters recorded in the Gangotri glacier region has been presented. Maximum temperature, minimum temperature, snowfall, snow cover thickness, incoming shortwave radiation flux, reflected shortwave radiation flux and albedo have been recorded at 'Bhojbasa' observation station. Meteorological data of 13 years from 2000 to 2012 have been presented for annual and seasonal variations in temperature, snowfall and snow cover thickness. Winter, premonsoon, monsoon and post-monsoon data have been considered for analysis. Annual mean maximum and minimum temperature are 11.1 ± 0.7°C and -2.3 ± 0.4°C respectively. Mean values of these parameters obtained for winter season are 3.0 ± 1.0°C and -10.4 ± 1.3°C respectively. Mean annual snowfall amount is 257.5 ± 81.6 cm and maximum snow cover thickness varies from 42 to 205 cm for different years. Incoming shortwave radiation flux and reflected shortwave radiation flux have been recorded using pyranometer sensor mounted on automatic weather station, and data for 2012 and 2013 are presented. Incoming shortwave radiation flux and total atmospheric transmissivity have been estimated. Mean annual atmospheric transmissivity is 0.37 at the observation location. Mean seasonal albedo for winter season is observed to be quite high compared to other seasons. Maximum and minimum temperature reveal an increase of 0.9°C and 0.05°C respectively, during the decade. Annual snowfall amount reveals a decrease of 37 cm in the decade. The observed temperature and snowfall patterns during the past 13 years, at the present study location, indicate that trends in Central Himalaya may be in accordance with the observed trends in the Western Himalaya.Keywords
Albedo, Glacier, Snowfall, Snow Cover, Temperature.Full Text
References
- Bolch, T. et al., The state and fate of Himalayan glaciers. Science, 2012, 336, 310–314.
- Bahuguna, I. M. et al., Are the Himalayan glaciers retreating? Curr. Sci., 2014, 106, 1008–1013.
- Bhambri, R., Bolch, T. and Chaujar, R. K., Frontal recession of Gangotri Glacier, Garhwal Himalayas, from 1965 to 2006, measured through high-resolution remote sensing data. Curr. Sci., 2012, 102, 489–494.
- Saraswat, P., Syed, T. H., Famiglietti, J. S., Fielding, E. J., Crippen, R. and Gupta, N., Recent changes in the snout position and surface velocity of Gangotri glacier observed from space. Int. J. Remote Sensing, 2013, 34:24, 8653–8668.
- Kulkarni, A. V. and Karyakarte, Y., Observed changes in Himalayan glaciers. Curr. Sci., 2014, 106, 237–244.
- Gantayat, P., Kulkarni, A. V. and Srinivasan, J., Estimation of ice thickness using surface velocities and slope: case study at Gangotri Glacier India. J. Glaciol., 2014, 60, 277–282.
- Negi, H. S., Thakur, N. K., Ganju, A. and Snehmani, Monitoring of Gangotri glacier using remote sensing and ground observations. J. Earth Syst. Sci., 2012, 121, 855–866.
- Shrestha, A. B., Wake, C. P., Mayewski, P. A. and Dibb, J. E., Maximum temperature trends in the Himalaya and its vicinity: an analysis based on temperature records from Nepal for the period 1971–94. J. Climate, 1999, 12, 2775–2786.
- Dimri, A. P. and Dash, S. K., Winter temperature and precipitation trends in the Siachen Glacier. Curr. Sci., 2010, 98, 1620–1625.
- Gusain, H. S., Chand, D., Thakur, N., Singh, A. and Ganju, A., Snow avalanche climatology of Indian Western Himalaya. In International Symposium on Snow and Avalanches, Manali, 6–10 April 2009.
- Gusain, H. S., Mishra, V. D. and Arora, M. K., A four year record of the meteorological parameters, radiative and turbulent energy fluxes at the edge of the East Antarctic ice sheet, close to Schirmacher Oasis, Antarctic Science, 2014, 26(1), 93–103.
- Dimri, A. P., Niyogi, D., Barros, A. P., Ridley, J., Mohanty, U. C., Yasunari, T. and Sikka, D. R., Western disturbances: a review. Rev. Geophys., 2015, 53, doi:10.1002/2014RG000460.
- Dimri, A. P., Relationship between ENSO phases with Northwest India winter precipitation. Int. J. Climatol., 2012, doi:10.1002/ joc.3559.
- Dimri, A. P. and Dash, S. K., Winter climatic trends in the western Himalaya. Climate Change, 2012, 111, 775–800.
- Gusain, H. S., Mishra, V. D. and Bhutiyani, M. R., Winter temperature and snowfall trends in the cryospheric region of northwest Himalaya. Mausam, 2014, 65(3), 425–432.
- Shekhar, M., Chand, H., Kumar, S., Srinivasan, K. and Ganju, A., Climate change studies over western Himalayan region. Ann. Glaciol., 2010, 51, 105.