| Records |
| Author |
Külls, C.J.; Zabori, J. |
Title  |
On the representation of hydrological processes in current SVAT schemes-comparison and perspective |
Type |
Conference Article |
| Year |
2009 |
Publication |
American Geophysical Union Fall Meeting |
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| Volume |
2009 |
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14 |
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| Call Number |
THL @ christoph.kuells @ Kuells2009representation |
Serial |
52 |
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| Author |
Külls, C.; Bittner, A. |
| Title |
Passive barriers for long-term containment of Uranium and Vanadium |
Type |
Miscellaneous |
| Year |
2013 |
Publication |
IMWA Conf. |
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no |
| Call Number |
THL @ christoph.kuells @ Kuells12013passive |
Serial |
69 |
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| Author |
Doulgeris, C.; Tziritis, E.; Pisinaras, V.; Panagopoulos, A.; Külls, C. |
| Title |
Prediction of seawater intrusion to coastal aquifers based on non-dimensional diagrams |
Type |
Conference Article |
| Year |
2020 |
Publication |
EGU Geophysical Abstracts |
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Pages |
4073 |
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THL @ christoph.kuells @ Doulgeris2020prediction |
Serial |
41 |
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| Author |
Demuth, S.; Külls, C. |
| Title |
Probability analysis and regional aspects of droughts in southern Germany |
Type |
Journal Article |
| Year |
1997 |
Publication |
Sustainability of Water Resources under Increasing Uncertainty |
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Issue |
240 |
Pages |
97 |
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Iahs |
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| Call Number |
THL @ christoph.kuells @ Demuth1997probability |
Serial |
35 |
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| Author |
Klock, H.; Külls, C.; Udluft, P. |
| Title |
Quantification of Groundwater Recharge-Estimating recharge values using hydrochemical and geological data: A case study from the semiarid Kalahari catchment of northern Namibia |
Type |
Journal Article |
| Year |
2001 |
Publication |
IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences |
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269 |
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Pages |
25-32 |
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Wallingford [Oxfordshire]: IAHS, 1981- |
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THL @ christoph.kuells @ Klock2001 |
Serial |
32 |
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| Author |
Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C. |
| 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 |
| 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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| ISSN |
2073-4441 |
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no |
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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. |
| 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 |
| 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 |
| Call Number |
THL @ christoph.kuells @ w14050734 |
Serial |
81 |
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| Author |
Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C. |
| 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 |
| Year |
2022 |
Publication |
Water |
Abbreviated Journal |
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| Volume |
14 |
Issue |
5 |
Pages |
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| Keywords |
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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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Approved |
no |
| Call Number |
THL @ christoph.kuells @ w14050734 |
Serial |
85 |
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| Author |
Udluft, P.; Dünkeloh, A.; Mederer, J.; Külls, C.; Schaller, J. |
| Title |
Re-evaluation of the groundwater resources of Cyprus |
Type |
Report |
| Year |
2006 |
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Lefkosia |
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no |
| Call Number |
THL @ christoph.kuells @ Udluft2006re |
Serial |
66 |
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| Author |
Külls, C. |
| Title |
Rekonstruktion hydrologischer Extreme in der Namibwüste |
Type |
Journal Article |
| Year |
2011 |
Publication |
Berichte der naturforschenden Gesellschaft zu Freiburg im Breisgau |
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Issue |
101 |
Pages |
69-81 |
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no |
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THL @ christoph.kuells @ |
Serial |
71 |
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