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Author |
Demuth, S.; Külls, C. |
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Title |
Probability analysis and regional aspects of droughts in southern Germany |
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Journal Article |
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1997 |
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Sustainability of Water Resources under Increasing Uncertainty |
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240 |
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97 |
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Iahs |
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THL @ christoph.kuells @ Demuth1997probability |
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35 |
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Benito, G.; Rohde, R.; Seely, M.; Külls, C.; Dahan, O.; Enzel, Y.; Todd, S.; Botero, B.; Morin, E.; Grodek, T. |
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Title |
Management of alluvial aquifers in two southern African ephemeral rivers: implications for IWRM |
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Journal Article |
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Year |
2010 |
Publication |
Water Resources Management |
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24 |
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4 |
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641-667 |
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Springer Netherlands |
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THL @ christoph.kuells @ Benito2010management |
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25 |
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Author |
Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G. |
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Title |
Dynamics of flood water infiltration and ground water recharge in hyperarid desert |
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Journal Article |
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Year |
2008 |
Publication |
Groundwater |
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46 |
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3 |
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450-461 |
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Blackwell Publishing Inc Malden, USA |
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THL @ christoph.kuells @ Dahan2008dynamics |
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27 |
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Author |
Androvitsanea, A.; Fawzy, M.; Fuchs, J.; Külls, C.; Fahlbusch, H.; Heiden, J. |
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Title |
Hydrologische Bedingungen im Heraion von Samos vom 12. bis 8. Jh. v. Chr. und ihre Bedeutung für die wasserbauliche Infrastruktur |
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Journal Article |
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2018 |
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Environmental Water Engineering |
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1 |
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1 |
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1-21 |
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THL @ christoph.kuells @ Androvitsanea2018hydrologische |
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17 |
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Author |
Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C. |
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Title |
Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements |
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Journal Article |
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Year |
2022 |
Publication |
Water |
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14 |
Issue |
5 |
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Abstract |
Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations. |
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2073-4441 |
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THL @ christoph.kuells @ Marinos2022 |
Serial |
82 |
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Author |
Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C. |
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Title |
Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements |
Type |
Journal Article |
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Year |
2022 |
Publication |
Water |
Abbreviated Journal |
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Volume |
14 |
Issue |
5 |
Pages |
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Abstract |
Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations. |
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2073-4441 |
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no |
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Call Number |
THL @ christoph.kuells @ w14050734 |
Serial |
81 |
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Author |
Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C. |
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Title |
Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements |
Type |
Journal Article |
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Year |
2022 |
Publication |
Water |
Abbreviated Journal |
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Volume |
14 |
Issue |
5 |
Pages |
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Abstract |
Quantifying evapotranspiration and drainage losses is essential for improving irrigation efficiency. The FAO-56 is the most popular method for computing crop evapotranspiration. There is, however, a need for locally derived crop coefficients (Kc) with a high temporal resolution to reduce errors in the water balance. The aim of this paper is to introduce a dynamic Kc approach, based on Leaf Area Index (LAI) observations, for improving water balance computations. Soil moisture and meteorological data were collected in a terraced nectarine (Prunus persica var. nucipersica) orchard in Cyprus, from 22 March 2019 to 18 November 2021. The Kc was derived as a function of the canopy cover fraction (c), from biweekly in situ LAI measurements. The use of a dynamic Kc resulted in Kc estimates with a bias of 17 mm and a mean absolute error of 0.8 mm. Evapotranspiration (ET) ranged from 41% of the rainfall (P) and irrigation (I) in the wet year (2019) to 57% of P + I in the dry year (2021). Drainage losses from irrigation (DR_I) were 44% of the total irrigation. The irrigation efficiency in the nectarine field could be improved by reducing irrigation amounts and increasing the irrigation frequency. Future studies should focus on improving the dynamic Kc approach by linking LAI field observations with remote sensing observations and by adding ground cover observations. |
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2073-4441 |
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THL @ christoph.kuells @ w14050734 |
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85 |
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Author |
Benites Lazaro, L.L.; Bellezoni, R.; Puppim de Oliveira, J.; Jacobi, P.R.; Giatti, L. |
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Title |
Ten Years of Research on the Water-Energy-Food Nexus: An Analysis of Topics Evolution |
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Journal Article |
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Year |
2022 |
Publication |
Frontiers in Water |
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4 |
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THL @ christoph.kuells @ article |
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86 |
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Author |
Brutsaert, W. |
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Title |
Global land surface evaporation trend during the past half century: Corroboration by Clausius-Clapeyron scaling |
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Journal Article |
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Year |
2017 |
Publication |
Advances in Water Resources |
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106 |
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3-5 |
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Keywords |
Evaporation, Climate change, Evaporation trend |
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Analyses of satellite data mainly over the world’s ocean surfaces have shown that during 1986–2006 global average values of atmospheric water vapor, precipitation and evaporation have increased at a relative rate of 0.0013a−1; this is roughly in accordance with the Clausius-Clapeyron equation for the average temperature trend during this period, and amounts to 0.065K−1 at the average temperature of T=14∘C. Application of this concept over the world’s land surfaces yields an average global evaporation trend during the past half century of around 0.4 to 0.5 mma−2; this confirms the values obtained in previous studies with totally different methods. |
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0309-1708 |
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Tribute to Professor Garrison Sposito: An Exceptional Hydrologist and Geochemist |
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no |
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Call Number |
THL @ christoph.kuells @ Brutsaert20173 |
Serial |
287 |
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Author |
Klock, H.; Külls, C.; Udluft, P. |
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Title |
Estimating recharge values using hydrochemical and geological data: a case study from the |
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Conference Article |
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Year |
2001 |
Publication |
Impact of Human Activity on Groundwater Dynamics: Proceedings of an International Symposium (Symposium S3) Held During the Sixth Scientific Assembly of the International Association of Hydrological Sciences (IAHS) at Maastricht, The Netherlands, from 18 t |
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269 |
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25 |
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International Assn of Hydrological Sciences |
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THL @ christoph.kuells @ Klock2001estimating |
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60 |
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