Erratum to: Pan coefficient (K p) estimation under uncertainty on fetch

Mohammadi, Mandana; Ghahraman, B; Davary, Kamran; Liaghat, A; Aval, Mohammad Bannayan

doi:10.1007/s00703-012-0193-9

Cited by 3 publications

(4 citation statements)

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“…Similarly, the maximum possible E p , as calculated using Eq. 6, is limited to ≤ 7.2mm d -1 [5][6][7][8][9][10][11][12].…”

Section: International Journal Of Environmental Sciences and Natural Resourcesmentioning

confidence: 99%

Estimation of Evaporation at Tharandt, using Daily and Ten-Minute Class-A Pan Data from Automatic Measuring Pressure Sensor Instrument

Mekoya¹

2019

IJESNR

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Evaporation is major component of global water cycle and water balance of a small/large irrigation area, reservoir or lake, and a catchment. In this study, evaporation from Class-A pan (E p ) for the years from 2004 to 2013 at Tharandt, Germany is calculated and analyzed using daily and ten-minute Class-A pan water level data from automatic measuring pressure sensor instrument.Daily E p is first calculated at two different times; at 7 a.m. and at midnight. Because daily E p calculated at 7 a.m. had shown less errors as it had fewer negative values (n = 43 out of a total of 2145 values) than E p calculated at midnight (n = 84 out of a total of 1971 values); E p calculated at 7a.m. is selected for the calculation of E p . The correlation between E p calculated at midnight and E p calculated at 7a.m. was 'very good' (R 2 = 0.87, MSE = 0.32mm d -1 ). Therefore, E p calculated at midnight is used for filling as well as for correcting E p calculated at 7 a.m. values. Accordingly, missing values of daily E p at 7a.m. are filled using 0.908 × daily E p at midnight values + 0.385 (Eq. 7). In Eq. 7, the cause for non-zero offset (0.385) could be instrument error. Assuming no instrument error, out of 1836 days, E pd which is the difference between 7a.m. and midnight E p (see Figure 1) was larger than zero for 1184 days (64.5% of the days). This means out of 1836 days, for 64.5% of the days next day 'night time' E p was greater than its previous day 'night time' E p . Also, for at least 54 days |E pd | ≤ 1.5mm d -1 which means that the 'night time' daily E p had to be ≥ 1.0mm d -1 .Figure 1: Understanding E pd which is daily E p at 7 a.m. ('blue') minus daily E p at midnight ('red') for day n.Finally, 2098 daily values of E p are calculated from March to November for the available data; however, only the summer half year (April to September, n=1702) values of E p are mainly used for most of the analysis.Generally, the accuracy of the self-recording ten-minute and daily water level measurements from Class-A pan at Tharandt from 2004 to 2013 can be considered as very good. However, the measurement should be carefully checked as it might have sensitivity to other than pressure or water depth difference in the pan. Hence, the sensitivity of the pressure sensor instrument at 7a.m. and at midnight for same pressure (depth of pan water) might have slight difference.

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“…Similarly, the maximum possible E p , as calculated using Eq. 6, is limited to ≤ 7.2mm d -1 [5][6][7][8][9][10][11][12].…”

Section: International Journal Of Environmental Sciences and Natural Resourcesmentioning

confidence: 99%

Estimation of Evaporation at Tharandt, using Daily and Ten-Minute Class-A Pan Data from Automatic Measuring Pressure Sensor Instrument

Mekoya¹

2019

IJESNR

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“…Solubilization is the transformation of inorganic hardto-access forms into bioavailable ones. Using them as inoculums allows increasing the uptake of this element by plants [6,7,9].…”

Section: Sludge Stabilizedmentioning

confidence: 99%

“…So far, phosphate rocks, which are a non-renewable source, have been used for this purpose. It is estimated that with the current level of exploitation of phosphate rocks, they will be depleted within 50-100 years [9,14]. There are cases when, despite the use of fertilizers, satisfactory results are not achieved, because the introduced forms of phosphorus are not available for plants.…”

Section: Introductionmentioning

confidence: 99%

The influence of temperature on the solubilization of phosphorus from the sewage sludge using Bacillus megaterium bacteria

2018

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This paper presents the results of research on the influence of temperature on the course of phosphorus solubilization from sewage sludge using Bacillus megaterium bacteria. The research was performed on a sanitized sewage sludge from a biological-mechanical treatment plant, to which phosphorus bacteria were applied. The experiment was conducted in two different temperature conditions, i.e. 21 and 36°C throughout the period of 23 days. During this time, parameters such as pH value and the total count of mesophilic bacteria were measured. The performed analyzes revealed that phosphorus solubilization occurs in both cases, however, at 36°C the process occurs much faster.

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“…Due to this fact, Bacillus megaterium bacteria are included in the group of PSB (Phosphorus Solubilising Bacteria) microorganisms. These species have the natural potential to dissolve phosphorus, both organic and inorganic [12]. Particular attention is focused on microorganisms that solubilise mineral phosphorus.…”

Section: Introductionmentioning

confidence: 99%

The impact of Bacillus megaterium on the solubilisation of phosphorus from sewage sludge

et al. 2019

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The aim of this work was to analyse the influence of Bacillus megaterium bacteria on the solubilisation of phosphorus in a sewage sludge. The tests were carried out for two different temperature conditions, i.e. 21 and 36ºC. In the experiment, lasting 23 days, the course of phosphorus solubilization under the influence of a changing population of bacteria was determined using Golterman’s speciation analysis. This method allows to estimating the fraction of bioavailable phosphorus in the tested samples. The obtained results allow one to state that the population size of Bacillus megaterium bacteria changes, while the intensity of these changes depends on temperature and organic acids produced in metabolic processes change the pH of the environment, which affects phosphorus solubilisation and its speciation. The increase in the population of bacteria is accompanied by the increase in bioavailable phosphorous forms, and thus the release of phosphorus contained in the form of sparingly soluble forms in soil. The above fact is extremely important when considering the use of sewage sludge for natural purposes.

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Erratum to: Pan coefficient (K p) estimation under uncertainty on fetch

Cited by 3 publications

References 0 publications

Estimation of Evaporation at Tharandt, using Daily and Ten-Minute Class-A Pan Data from Automatic Measuring Pressure Sensor Instrument

Estimation of Evaporation at Tharandt, using Daily and Ten-Minute Class-A Pan Data from Automatic Measuring Pressure Sensor Instrument

The influence of temperature on the solubilization of phosphorus from the sewage sludge using Bacillus megaterium bacteria

The impact of Bacillus megaterium on the solubilisation of phosphorus from sewage sludge

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