This paper investigates the long-term monthly, seasonal, and annual trends of climatic variables, snow cover extent, and discharge in Langtang Basin, Central Himalayas. The Mann-Kendall test with variance corrections is used to detect the trend, and Sen’s slope estimator is calculated to quantify the trend. The innovative trend analysis, a graphical method for trend detection, is applied, and the results are compared. The snow cover extent for the study area was derived from moderate resolution imaging spectroradiometer (MODIS) satellite images. The result suggests that there is a significant increasing trend for mean temperature and minimum temperature, while no remarkable trend is identified for maximum temperature. Similarly, precipitation shows a rising trend for all seasons except winter. Snow cover is a major source of fresh water for the region and is depleting at an alarming rate. River discharge, augmented by snowmelt and high rainfall, is upsurging. In summary, this study portrays the links of climatic variables with snow cover and river discharge. The outcome of this study will be useful for understanding the climate change status in the Central Himalayas and sustainably managing the watershed.
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Butt MJ, Bilal M (2011) Application of snowmelt runoff model for water resource management. Hydrol Process 25:3735–3747. https://doi.org/10.1002/hyp.8099
Chin R, Lee BY (2008) Analysis of data. In: Principles and practice of clinical trial medicine. Elsevier, pp 325–359
Gurung DR, Maharjan SB, Shrestha AB et al (2017) Climate and topographic controls on snow cover dynamics in the Hindu Kush Himalaya. Int J Climatol 37:3873–3882. https://doi.org/10.1002/joc.4961
Hall DK, Riggs GA (2007) Accuracy assessment of the MODIS snow products. Hydrol Process 21:1534–1547. https://doi.org/10.1002/hyp.6715
Hall DK, Riggs GA (2016) MODIS/Terra Snow Cover 8-day L3 Global 500m SIN Grid, Version 6. Feb 2001 to Dec 2017. Boulder, Colorado USA NASA NSIDC DAAC. https://doi.org/10.5067/MODIS/MOD10A2.006. Accessed August 29, 2018
Hall DK, Riggs GA, Salomonson VV (1995) Mapping global snow cover using moderate resolution imaging spectroradiometer (MODIS) data. Glaciol Data 1:33
Hall DK, Riggs GA, Salomonson VV et al (2002) MODIS snow-cover products. 83:181–194
Hamed KH, Rao AR (1988) A modified Mann-Kendall trend test for autocorrelated data. J Hydrol 204:182–196
Hirsch RM, Slack JR (1984) A nonparametric trend test for seasonal data with serial dependence. Water Resour Res 20:727–732. https://doi.org/10.1029/WR020i006p00727
Hirsch RM, Slack JR, Smith RA (1982) Techniques of trend analysis for monthly water quality data. Water Resour Res 18:107–121. https://doi.org/10.1029/WR018i001p00107
Immerzeel WW, Droogers P, De Jong SM, Bierkens MFP (2009) Remote sensing of environment large-scale monitoring of snow cover and runoff simulation in Himalayan river basins using remote sensing. Remote Sens Environ 113:40–49. https://doi.org/10.1016/j.rse.2008.08.010
IPCC (2007) Climate change 2007: synthesis report. Contribution of working groups I, II and III to the Fourth Assess- ment Report of the Intergovernmental Panel on Climate Change. IPCC, Geneva, Switzerland
IPCC (2014) Climate change 2014: impacts, adaptation, and vulnerability. Part A: Global and Sectoral Aspects
Kendall MG (1975) Rank correlation methods. Charles Griffin, London
Kisi O, Ay M (2014) Comparison of Mann-Kendall and innovative trend method for water quality parameters of the Kizilirmak River, Turkey. J Hydrol. https://doi.org/10.1016/j.jhydrol.2014.03.005
Klein AG, Hall DK, Riggs GA (1998) Improving snow cover mapping in forests through the use of a canopy reflectance model. Hydrol Process 12:1723–1744. https://doi.org/10.1002/(SICI)1099-1085(199808/09)12:10/11<1723::AID-HYP691>3.0.CO;2-2
Mann HB (1945) Nonparametric tests against trend. Econometrica 13:245–259
Maskey S, Uhlenbrook S, Ojha S (2011) An analysis of snow cover changes in the Himalayan region using MODIS snow products and in-situ temperature data. Clim Chang 108:391–400. https://doi.org/10.1007/s10584-011-0181-y
Mishra B, Babel MS, Tripathi NK (2014) Analysis of climatic variability and snow cover in the Kaligandaki River basin, Himalaya, Nepal. Theor Appl Climatol 116:681–694. https://doi.org/10.1007/s00704-013-0966-1
Mullick MRA, Nur RM, Alam MJ, Islam KMA (2019) Observed trends in temperature and rainfall in Bangladesh using pre-whitening approach. Glob Planet Chang 172:104–113. https://doi.org/10.1016/j.gloplacha.2018.10.001
Nepal S (2016) Impacts of climate change on the hydrological regime of the Koshi river basin in the Himalayan region. J Hydro-Environ Res 10:76–89. https://doi.org/10.1016/j.jher.2015.12.001
Nikzad Tehrani E, Sahour H, Booij MJ (2019) Trend analysis of hydro-climatic variables in the north of Iran. Theor Appl Climatol 136:85–97. https://doi.org/10.1007/s00704-018-2470-0
Piyoosh AK, Ghosh SK (2017) Effect of autocorrelation on temporal trends in rainfall in a valley region at the foothills of Indian Himalayas. Stoch Environ Res Risk Assess 31:2075–2096. https://doi.org/10.1007/s00477-016-1347-y
Pradhananga NS, Kayastha RB, Bhattarai BC et al (2014) Estimation of discharge from Langtang River basin, Rasuwa, Nepal, using a glacio-hydrological model. Ann Glaciol 55:223–230. https://doi.org/10.3189/2014AoG66A123
Raja NB, Aydin O (2019) Trend analysis of annual precipitation of Mauritius for the period 1981–2010. Meteorog Atmos Phys 131:789–805. https://doi.org/10.1007/s00703-018-0604-7
RGI Consortium (2017) Randolph Glacier Inventory – a dataset of global glacier outlines: Version 6.0: Technical Report, Global Land Ice Measurements from Space, Colorado, USA. Digital Media. https://doi.org/10.7265/N5-RGI-60
Riggs GA, Hall DK (2015) MODIS snow products collection 6 user guide
Salunke P, Jain S, Mishra SK (2019) Performance of the CMIP5 models in the simulation of the Himalaya-Tibetan plateau monsoon. Theor Appl Climatol 137:909–928. https://doi.org/10.1007/s00704-018-2644-9
Sen PK (1968) Estimates of the regression coefficient based on Kendall’s Tau. J Am Stat Assoc 63:1379–1389. https://doi.org/10.1080/01621459.1968.10480934
Şen Z (2012) Innovative trend analysis methodology. J Hydrol Eng 17:1042–1046. https://doi.org/10.1061/(asce)he.1943-5584.0000556
Şen Z (2014) Trend identification simulation and application. J Hydrol Eng 19:635–642. https://doi.org/10.1061/(ASCE)HE.1943-5584.0000811
Shafiq MU, Rasool R, Ahmed P, Dimri AP (2019) Temperature and precipitation trends in Kashmir valley, North Western Himalayas. Theor Appl Climatol 135:293–304. https://doi.org/10.1007/s00704-018-2377-9
Shrestha M (2015) Data analysis relied on linear scaling bias correction (V.1.0) Microsoft Excel file
Shrestha AB, Wake CP, Mayewski PA, Dibb JE (1999) Maximum temperature trends in the Himalaya and its vicinity: an analysis based on temperature records from Nepal for the period 1971–94. J Clim 12:2775–2786. https://doi.org/10.1175/1520-0442(1999)012<2775:MTTITH>2.0.CO;2
Shrestha M, Acharya SC, Shrestha PK (2017) Bias correction of climate models for hydrological modelling - are simple methods still useful? Meteorol Appl 24:531–539. https://doi.org/10.1002/met.1655
Siddik MAZ, Rahman M (2014) Trend analysis of maximum, minimum, and average temperatures in Bangladesh: 1961-2008. Theor Appl Climatol 116:721–730. https://doi.org/10.1007/s00704-014-1135-x
Stigter EE, Wanders N, Saloranta TM et al (2017) Assimilation of snow cover and snow depth into a snow model to estimate snow water equivalent and snowmelt runoff in a Himalayan catchment. Cryosph 11:1647–1664. https://doi.org/10.5194/tc-11-1647-2017
Suhaila J, Yusop Z (2018) Trend analysis and change point detection of annual and seasonal temperature series in Peninsular Malaysia. Meteorog Atmos Phys 130:565–581. https://doi.org/10.1007/s00703-017-0537-6
Tabari H, Somee BS, Zadeh MR (2011) Testing for long-term trends in climatic variables in Iran. Atmos Res 100:132–140. https://doi.org/10.1016/j.atmosres.2011.01.005
Tahir AA, Chevallier P, Arnaud Y, Ashraf M, Bhatti MT (2015) Snow cover trend and hydrological characteristics of the Astore River basin (Western Himalayas) and its comparison to the Hunza basin (Karakoram region). Sci Total Environ 505:748–761. https://doi.org/10.1016/j.scitotenv.2014.10.065
Tanizaki H (1997) Power comparison of non-parametric tests: small-sample properties from Monte Carlo experiments. J Appl Stat 24:603–632. https://doi.org/10.1080/02664769723576
Thapa A, Kayastha RB (2015) Extraction of periodic components and time adaptive long-term trends of temperature and precipitation as climate variables in Langtang River basin, Nepal using empirical mode decomposition. J Clim Chang 1:99–107. https://doi.org/10.3233/JCC-150008
von Storch H (1995) Misuses of statistical analysis in climate research. In: von Storch H, Navarra A (eds) Analysis of climate variability: applications of statistical techniques. Springer, Berlin
Wester P, Mishra A, Mukherji A, Shrestha AB (2019) The Hindu Kush Himalaya assessment. Springer International Publishing, Cham
Yasutomi N, Hamada A, Yatagai A (2011) Development of a long-term daily gridded temperature dataset and its application to rain/snow discrimination of daily precipitation. Glob Environ Res V15N2:165–172
Yue S, Wang CY (2002) Applicability of prewhitening to eliminate the influence of serial correlation on the Mann-Kendall test. Water Resour Res 38:4–1–4–7. https://doi.org/10.1029/2001WR000861
Yue S, Wang C (2004) The Mann-Kendall test modified by effective sample size to detect trend in serially correlated hydrological series. Water Resour Manag 18:201–218. https://doi.org/10.1023/B:WARM.0000043140.61082.60
Yue S, Pilon P, Cavadias G (2002) Power of the Mann ± Kendall and spearman’ s rho tests for detecting monotonic trends in hydrological series. 259:254–271
We would like to express our thanks to the Department of Hydrology and Meteorology, Nepal, for providing hydrological and meteorological data for the study.
This study was supported by the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No. 2016TS08).
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Thapa, S., Li, B., Fu, D. et al. Trend analysis of climatic variables and their relation to snow cover and water availability in the Central Himalayas: a case study of Langtang Basin, Nepal. Theor Appl Climatol (2020). https://doi.org/10.1007/s00704-020-03096-5
- Climate change
- Innovative trend analysis