Research output: Contribution to journal › Article › peer-review
Parameterizing a hydrological model using a short-term observational dataset to study runoff generation processes and reproduce recent trends in streamflow at a remote mountainous permafrost basin. / Nesterova, Nataliia; Makarieva, Olga; Post, David Andrew.
In: Hydrological Processes, Vol. 35, No. 7, 14278, 01.07.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Parameterizing a hydrological model using a short-term observational dataset to study runoff generation processes and reproduce recent trends in streamflow at a remote mountainous permafrost basin
AU - Nesterova, Nataliia
AU - Makarieva, Olga
AU - Post, David Andrew
N1 - Publisher Copyright: © 2021 John Wiley & Sons Ltd.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Recent decades have seen a change in the runoff characteristics of the Suntar River basin in the mountainous, permafrost, hard-to-reach region of Eastern Siberia. This study aims to investigate and simulate runoff formation processes, including the factors driving recent changes in hydrological response of the Suntar River, based on short-term historical observations of a range of hydrological, climatological and landscape measurements conducted in 1957–1959. The hydrograph model is applied as it has the advantage of using observed physical properties of landscapes as its parameters. The developed parametrization of the goltsy landscape (rocky-talus) is verified by comparison of the results of simulations of variable states of snow and frozen ground with observations carried out in 1957–1959. Continuous simulations of streamflow on a daily time step are conducted for the period 1957–2012 in the Suntar River (area 7680 km2, altitude 828–2794 m) with mean and median values of Nash–Sutcliff criteria reaching 0.58 and 0.67, respectively. The results of simulations have shown that the largest component of runoff (about 70%) is produced in the high-altitude area which comprises only 44% of the Suntar River basin area. The simulated streamflow reproduces the patterns of recently observed changes, including the increase in low flows, suggesting that the increase in the proportion of liquid precipitation in autumn due to air temperature rise is an important factor in driving streamflow changes in the region. The data presented are unique for the vast mountainous parts of North-Eastern Eurasia which play an important role in the global climate system. The results indicate that parameterizing a hydrological model based on observations allows the model to be used in studying the response of river basins to climate change with greater confidence.
AB - Recent decades have seen a change in the runoff characteristics of the Suntar River basin in the mountainous, permafrost, hard-to-reach region of Eastern Siberia. This study aims to investigate and simulate runoff formation processes, including the factors driving recent changes in hydrological response of the Suntar River, based on short-term historical observations of a range of hydrological, climatological and landscape measurements conducted in 1957–1959. The hydrograph model is applied as it has the advantage of using observed physical properties of landscapes as its parameters. The developed parametrization of the goltsy landscape (rocky-talus) is verified by comparison of the results of simulations of variable states of snow and frozen ground with observations carried out in 1957–1959. Continuous simulations of streamflow on a daily time step are conducted for the period 1957–2012 in the Suntar River (area 7680 km2, altitude 828–2794 m) with mean and median values of Nash–Sutcliff criteria reaching 0.58 and 0.67, respectively. The results of simulations have shown that the largest component of runoff (about 70%) is produced in the high-altitude area which comprises only 44% of the Suntar River basin area. The simulated streamflow reproduces the patterns of recently observed changes, including the increase in low flows, suggesting that the increase in the proportion of liquid precipitation in autumn due to air temperature rise is an important factor in driving streamflow changes in the region. The data presented are unique for the vast mountainous parts of North-Eastern Eurasia which play an important role in the global climate system. The results indicate that parameterizing a hydrological model based on observations allows the model to be used in studying the response of river basins to climate change with greater confidence.
KW - climate change
KW - goltsy
KW - hydrograph model
KW - hydrological model parametrization
KW - remote high-altitude permafrost basin
KW - short-term observations
KW - the Suntar River
KW - HEADWATER BASIN
KW - WATER-BALANCE STATION
KW - SENSITIVITY
KW - CLIMATE-CHANGE
KW - RIVER
KW - SIMULATION
KW - EVAPORATION
KW - IMPACT
KW - PRECIPITATION
KW - KOLYMA
UR - http://www.scopus.com/inward/record.url?scp=85111348210&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/33f11537-afc8-374d-ab80-7bdeb753008f/
U2 - 10.1002/hyp.14278
DO - 10.1002/hyp.14278
M3 - Article
AN - SCOPUS:85111348210
VL - 35
JO - Hydrological Processes
JF - Hydrological Processes
SN - 0885-6087
IS - 7
M1 - 14278
ER -
ID: 87709923