Year-round estimation of soil moisture content using temporally variable soil hydraulic parameters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F17%3A00468168" target="_blank" >RIV/67985874:_____/17:00468168 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/hyp.11121" target="_blank" >http://dx.doi.org/10.1002/hyp.11121</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/hyp.11121" target="_blank" >10.1002/hyp.11121</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Year-round estimation of soil moisture content using temporally variable soil hydraulic parameters

Popis výsledku v původním jazyce

Soil moisture plays a key role in the hydrological cycle as it controls the flux of water between soil, vegetation, and atmosphere. This study is focused on a year-round estimation of soil moisture in a forested mountain area using the bucket model approach. For this purpose, three different soil moisture models are utilised. The procedure is based on splitting the whole year into two complement periods (dormant and vegetation). Model parameters are allowed to vary between the two periods and also from year to year in the calibration procedure. Consequently, two sets of average model parameters corresponding to dormant and vegetation seasons are proposed.nnThe process of splitting is strongly supported by the experimental data, and it enables us to variate saturated hydraulic conductivity and pore-size characterisation. The use of the two different parameter sets significantly enhances the simulation of two (Teuling and Troch model and soil water balance model-green–ampt [SWBM-GA]) out of three models in the 6-year period from 2009 to 2014. For these two models, the overall Nash-Sutcliffe coefficient increased from 0.64 to 0.79 and from 0.55 to 0.80. The third model (the Laio approach) proved to be insensitive to parameter changes due to its insufficient drainage prediction. The variability of the warm and cold parameter sets between particular years is more pronounced in the warm periods. The cold periods exhibited approximately similar character during all 6 years.

Název v anglickém jazyce

Year-round estimation of soil moisture content using temporally variable soil hydraulic parameters

Popis výsledku anglicky

Soil moisture plays a key role in the hydrological cycle as it controls the flux of water between soil, vegetation, and atmosphere. This study is focused on a year-round estimation of soil moisture in a forested mountain area using the bucket model approach. For this purpose, three different soil moisture models are utilised. The procedure is based on splitting the whole year into two complement periods (dormant and vegetation). Model parameters are allowed to vary between the two periods and also from year to year in the calibration procedure. Consequently, two sets of average model parameters corresponding to dormant and vegetation seasons are proposed.nnThe process of splitting is strongly supported by the experimental data, and it enables us to variate saturated hydraulic conductivity and pore-size characterisation. The use of the two different parameter sets significantly enhances the simulation of two (Teuling and Troch model and soil water balance model-green–ampt [SWBM-GA]) out of three models in the 6-year period from 2009 to 2014. For these two models, the overall Nash-Sutcliffe coefficient increased from 0.64 to 0.79 and from 0.55 to 0.80. The third model (the Laio approach) proved to be insensitive to parameter changes due to its insufficient drainage prediction. The variability of the warm and cold parameter sets between particular years is more pronounced in the warm periods. The cold periods exhibited approximately similar character during all 6 years.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10501 - Hydrology

Projekt

<a href="/cs/project/GA16-05665S" target="_blank" >GA16-05665S: Režim půdní vody v malých horských povodích vystavených klimatickému stresu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Hydrological Processes

ISSN

0885-6087

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1438-1452

Kód UT WoS článku

000395628600018

EID výsledku v databázi Scopus

2-s2.0-85012867093