References
- Armstrong, R. L., K. Rittger, M. J. Brodzik, A. Racoviteanu, A. P. Barrett, S.-J. S. Khalsa, and A. M. Wilson. 2018. Runoff from glacier ice and seasonal snow in High Asia: Separating melt water sources in river flow. Regional Environmental Change 19 (5):1249–1261. doi:https://doi.org/10.1007/s10113-018-1429-0.
- Beaulieu, M., H. Schreier, and G. Jost. 2012. A shifting hydrological regime: A field investigation of snowmelt runoff processes and their connection to summer base flow, Sunshine Coast, British Columbia. Hydrological Processes 26 (17):2672–82. doi:https://doi.org/10.1002/hyp.v26.17.
- Beldring, S., and A. Voksø. 2011. Report No. 4—2011: Climate change impacts on the flow regimes of rivers in Bhutan and possible consequences for hydropower development, Norwegian Water Resources and Energy Directorate, Oslo, Norway. ISSN, 1502–3540.
- Carey, S., and W. Quinton. 2005. Evaluating runoff generation during summer using hydrometric, stable isotope and hydrochemical methods in a discontinuous permafrost alpine catchment. Hydrological Processes: An International Journal 19 (1):95–114. doi:https://doi.org/10.1002/()1099-1085.
- Chhopel, G. K. 2014. Sustainability of Bhutan’s hydropower. Hydro Nepal: Journal of Water, Energy and Environment 14:73–76. doi:https://doi.org/10.3126/hn.v14i0.11272.
- Cowie, R. M., J. F. Knowles, K. R. Dailey, M. W. Williams, T. J. Mills, and N. P. Molotch. 2017. Sources of streamflow along a headwater catchment elevational gradient. Journal of Hydrology 549:163–78. doi:https://doi.org/10.1016/j.jhydrol.2017.03.044.
- Craig, H. 1961. Isotopic variations in meteoric waters. Science 133 (3465):1702–03. doi:https://doi.org/10.1126/science.133.3465.1702.
- Dalai, T. K., S. Bhattacharya, and S. Krishnaswami. 2002. Stable isotopes in the source waters of the Yamuna and its tributaries: Seasonal and altitudinal variations and relation to major cations. Hydrological Processes 16 (17):3345–64. doi:https://doi.org/10.1002/()1099-1085.
- Dansgaard, W. 1964. Stable isotopes in precipitation. Tellus 16 (4):436–68. doi:https://doi.org/10.3402/tellusa.v16i4.8993.
- Drever, J. I. 1988. The geochemistry of natural water. Englewood Cliffs, NJ: Pearson Education.
- Engel, M., D. Penna, G. Bertoldi, G. Vignoli, W. Tirler, and F. Comiti. 2019. Controls on spatial and temporal variability in streamflow and hydrochemistry in a glacierized catchment. Hydrology and Earth System Sciences 23 (4):2041–63. doi:https://doi.org/10.5194/hess-23-2041-2019.
- Forest Resources Management Division. 2017. Land use and land cover of Bhutan 2016, maps and statistics. http://www.dofps.gov.bt/wp-content/uploads/2018/07/LULC2016_Maps-and-Statistics.pdf.
- Frisbee, M. D., F. M. Phillips, A. R. Campbell, F. Liu, and S. A. Sanchez. 2011. Streamflow generation in a large, alpine watershed in the southern Rocky Mountains of Colorado: Is streamflow generation simply the aggregation of hillslope runoff responses? Water Resources Research 47 (6). doi: https://doi.org/10.1029/2010wr009391.
- Gautam, R., N. C. Hsu, K. M. Lau, and M. Kafatos. 2009. Aerosol and rainfall variability over the Indian monsoon region: Distributions, trends and coupling. Annals of Geophysics 27 (9):3691–703. doi:https://doi.org/10.5194/angeo-27-3691-2009.
- Genereux, D. 1998. Quantifying uncertainty in tracer-based hydrograph separations. Water Resources Research 34 (4):915–19. doi:https://doi.org/10.1029/98wr00010.
- Gurung, D. R., A. V. Kulkarni, A. Giriraj, K. S. Aung, and B. Shrestha. 2011. Monitoring of seasonal snow cover in Bhutan using remote sensing technique. Current Science (Bangalore) 101 (10):1364–70.
- Gurung, D. R., S. B. Maharjan, A. B. Shrestha, M. S. Shrestha, S. R. Bajracharya, and M. S. R. Murthy. 2017. Climate and topographic controls on snow cover dynamics in the Hindu Kush Himalaya. International Journal of Climatology 37 (10):3873–82. doi:https://doi.org/10.1002/joc.4961.
- Hooper, R. P., and C. A. Shoemaker. 1986. A comparison of chemical and isotopic hydrograph separation. Water Resources Research 22 (10):1444–54. doi:https://doi.org/10.1029/WR022i010p01444.
- Immerzeel, W. W., L. P. van Beek, and M. F. Bierkens. 2010. Climate change will affect the Asian water towers. Science 328 (5984):1382–85. doi:https://doi.org/10.1126/science.1183188.
- Iwata, S. 2010. Glaciers of Bhutan. An overview. Washington, DC: US Geological Survey Professional Paper.
- Katwal, T. 2013. Multiple cropping in Bhutanese agriculture: Present status and opportunities. Paper presented at the Regional consultative meeting on popularizing multiple cropping innovations as a means to raise productivity and farm income in SAARC countries, Peradeniya, Kandy, Sri Lanka. Kandy Google Scholar.
- Kulkarni, A., S. Patwardhan, K. K. Kumar, K. Ashok, and R. Krishnan. 2013. Projected climate change in the Hindu Kush-Himalayan region by using the high-resolution regional climate model PRECIS. Mountain Research and Development 33 (2):142–51. doi:https://doi.org/10.1659/MRD-JOURNAL-D-11-00131.1.
- Laudon, H., H. F. Hemond, R. Krouse, and K. H. Bishop. 2002. Oxygen 18 fractionation during snowmelt: Implications for spring flood hydrograph separation. Water Resources Research 38 (11):40–10. doi:https://doi.org/10.1029/2002WR001510.
- Li, H., S. Beldring, C.-Y. Xu, M. Huss, K. Melvold, and S. K. Jain. 2015. Integrating a glacier retreat model into a hydrological model – Case studies of three glacierised catchments in Norway and Himalayan region. Journal of Hydrology 527:656–67. doi:https://doi.org/10.1016/j.jhydrol.2015.05.017.
- Liu, F., M. W. Williams, and N. Caine. 2004. Source waters and flow paths in an alpine catchment, Colorado Front Range, United States. Water Resources Research 40 (9). doi:https://doi.org/10.1029/2004WR003076.
- Lucarini, V., and S. Pascale. 2012. Hydrological cycle over South and Southeast Asian river basins as simulated by PCMDI/CMIP3 experiments. arXiv preprint arXiv:1301.0020.
- Masood, M., P. J. Yeh, N. Hanasaki, and K. Takeuchi. 2015. Model study of the impacts of future climate change on the hydrology of Ganges-Brahmaputra-Meghna basin. Hydrology and Earth System Sciences 19 (2):747. doi:https://doi.org/10.5194/hess-19-747-2015.
- Mool, P. K., D. Wangda, S. R. Bajracharya, K. Kunzang, D. Gurung, and S. Joshi. 2001. Inventory of glaciers, glacial lakes and glacial lake outburst floods. Monitoring and early warning systems in the Hindu Kush-Himalayan Region: Bhutan. Kathmandu, Nepal: International Centre for Integrated Mountain Development.
- Muir, D. L., M. Hayashi, and A. F. McClymont. 2011. Hydrological storage and transmission characteristics of an alpine talus. Hydrological Processes 25 (19):2954–66. doi:https://doi.org/10.1002/hyp.8060.
- Naito, N., R. Suzuki, J. Komori, Y. Matsuda, S. Yamaguchi, T. Sawagaki, and K. S. Ghalley. 2012. Recent glacier shrinkages in the Lunana region, Bhutan Himalayas. Global Environmental Research 16 (1):13–22.
- Nepal, S., W.-A. Flügel, and A. B. Shrestha. 2014. Upstream-downstream linkages of hydrological processes in the Himalayan region. Ecological Processes 3 (1):19. doi:https://doi.org/10.1186/s13717-014-0019-4.
- Nepal, S., and A. B. Shrestha. 2015. Impact of climate change on the hydrological regime of the Indus, Ganges and Brahmaputra river basins: A review of the literature. International Journal of Water Resources Development 31 (2):201–18. doi:https://doi.org/10.1080/07900627.2015.1030494.
- Pandey, S. K., V. Vinoj, K. Landu, and S. S. Babu. 2017. Declining pre-monsoon dust loading over South Asia: Signature of a changing regional climate. Scientific Reports 7 (1):16062. doi:https://doi.org/10.1038/s41598-017-16338-w.
- Penna, D., M. Engel, G. Bertoldi, and F. Comiti. 2017. Towards a tracer-based conceptualization of meltwater dynamics and streamflow response in a glacierized catchment. Hydrology and Earth System Sciences 21 (1):23–41. doi:https://doi.org/10.5194/hess-21-23-2017.
- Pervez, M. S., and G. M. Henebry. 2015. Assessing the impacts of climate and land use and land cover change on the freshwater availability in the Brahmaputra River basin. Journal of Hydrology: Regional Studies 3:285–311.
- Racoviteanu, A. E., R. Armstrong, and M. W. Williams. 2013. Evaluation of an ice ablation model to estimate the contribution of melting glacier ice to annual discharge in the Nepal Himalaya. Water Resources Research 49 (9):5117–33. doi:https://doi.org/10.1002/wrcr.20370.
- Ren, W., T. Yao, and S. Xie. 2016. Water stable isotopes in the Yarlungzangbo headwater region and its vicinity of the southwestern Tibetan Plateau. Tellus B: Chemical and Physical Meteorology 68 (1):30397. doi:https://doi.org/10.3402/tellusb.v68.30397.
- Rozanski, K., L. Araguás‐Araguás, and R. Gonfiantini. 1993. Isotopic patterns in modern global precipitation. In Climate Change in Continental Isotopic Records, eds P. K. Swart, K. C. Lohmann, J. Mckenzie and S. Savin, 1–36. Washington, DC: American Geophysical Union.
- Rupper, S., J. M. Schaefer, L. K. Burgener, L. S. Koenig, K. Tsering, and E. R. Cook. 2012. Sensitivity and response of Bhutanese glaciers to atmospheric warming. Geophysical Research Letters 39 (19). doi: https://doi.org/10.1029/2012gl053010.
- Sajani, S., K. Krishna Moorthy, K. Rajendran, and R. S. Nanjundiah. 2012. Monsoon sensitivity to aerosol direct radiative forcing in the community atmosphere model. Journal of Earth System Science 121 (4):867–89. doi:https://doi.org/10.1007/s12040-012-0198-2.
- Savada, A. M. 1991. Bhutan: A country study river systems. Washington: GPO for the Library of Congress.
- Schmieder, J., F. Hanzer, T. Marke, J. Garvelmann, M. Warscher, H. Kunstmann, and U. Strasser. 2016. The importance of snowmelt spatiotemporal variability for isotope-based hydrograph separation in a high-elevation catchment. Hydrology and Earth System Sciences 20 (12):5015–33. doi:https://doi.org/10.5194/hess-20-5015-2016.
- Singh, V. P., N. Sharma, and C. S. P. Ojha. 2013. The Brahmaputra basin water resources, Vol. 47. Dordrecht, The Netherlands: Springer Science & Business Media.
- Sklash, M., R. Farvolden, and P. Fritz. 1976. A conceptual model of watershed response to rainfall, developed through the use of oxygen-18 as a natural tracer. Canadian Journal of Earth Sciences 13 (2):271–83. doi:https://doi.org/10.1139/e76-029.
- Suecker, J. K., J. N. Ryan, C. Kendall, and R. D. Jarrett. 2000. Determination of hydrologic pathways during snowmelt for alpine/subalpine basins, Rocky Mountain National Park, Colorado. Water Resources Research 36 (1):63–75. doi:https://doi.org/10.1029/1999WR900296.
- Taylor, R. G., B. Scanlon, P. Döll, M. Rodell, R. van Beek, Y. Wada, L. Longuevergne, M. Leblanc, J. S. Famiglietti, and M. Edmunds. 2013. Ground water and climate change. Nature Climate Change 3 (4):322. doi:https://doi.org/10.1038/nclimate1744.
- Tshering, S., and B. Tamang. 2004. Hydropower-key to sustainable, socio-economic development of Bhutan. Paper presented at the United Nations Symposium on Hydropower and Sustainable Development, Beijing, China.
- Williams, M. W., C. Seibold, and K. Chowanski. 2009. Storage and release of solutes from a subalpine seasonal snowpack: Soil and stream water response, Niwot Ridge, Colorado. Biogeochemistry 95 (1):77–94. doi:https://doi.org/10.1007/s10533-009-9288-x.
- Williams, M. W., A. Wilson, D. Tshering, P. Thapa, and R. B. Kayastha. 2016. Using geochemical and isotopic chemistry to evaluate glacier melt contributions to the Chamkar Chhu (river), Bhutan. Annals of Glaciology 57 (71):339–48. doi:https://doi.org/10.3189/2016AoG71A068.
- Wilson, A. M. 2015. Hydrograph separation using hydrochemistry mixing models: An assessment of the Langtang River Basin, Nepal. (Geography Graduate Theses & Dissertations), University of Colorado at Boulder. https://scholar.colorado.edu/geog_gradetds/76.
- Wilson, A. M., M. W. Williams, R. B. Kayastha, and A. Racoviteanu. 2016. Use of a hydrologic mixing model to examine the roles of meltwater, precipitation and groundwater in the Langtang River basin, Nepal. Annals of Glaciology 57 (71):155–68. doi:https://doi.org/10.3189/2016AoG71A067.
- Xu, J., R. E. Grumbine, A. Shrestha, M. Eriksson, X. Yang, Y. Wang, and A. Wilkes. 2009. The melting Himalayas: Cascading effects of climate change on water, biodiversity, and livelihoods. Conservation Biology 23 (3):520–30. doi:https://doi.org/10.1111/cbi.2009.23.issue-3.