Reformulation of the Used Model to Estimate Soil Temperature

Diniz, Júlio Mannuel Tavares; Santos, Carlos Antonio Costa dos; Silva, Jean P. S. da; Rocha, Álvaro B. da

doi:10.3390/en15082905

Cited by 3 publications

(3 citation statements)

References 20 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, during the winter months (June to September), the temperature of the 5 cm layer was lower than the other layers, aligning with the period of lowest ambient temperatures. Similar observations were reported in a study [52] conducted in southeastern Brazil (20 • 12 43 S, 50 • 55 38 W, 413 m altitude) on a red-yellow argisol soil and another study [53] that investigated soil temperature and showed a behavior similar to that found in our study. In addition to seasonality, the magnitude of ambient temperature fluctuations also affects soil heat flux.…”

Section: Discussionsupporting

confidence: 92%

Thermal Properties and Temporal Dynamics of Red Latosol (Oxisol) in Sustainable Agriculture and Environmental Conservation

Jordan,

Santos,

Freitas

et al. 2023

Resources

View full text Add to dashboard Cite

Understanding and characterizing the relationship between soil and environmental temperatures is crucial for developing effective agricultural management strategies, promoting natural resource conservation, and developing sustainable production systems. Despite the direct impact of the thermal properties of Oxisols on global food production and sustainable agriculture, there is a dearth of research in this area. Therefore, this study aimed to monitor and analyze the thermal behavior of a Red Latosol (Oxisol) in Dracena-SP, Brazil, over two years (from 28 July 2020 to 27 July 2022). Using R software (version 4.3.0) and paired group comparisons, we organized the data into twelve-month sets to estimate monthly soil thermal diffusivity using amplitude, arctangent, and logarithm methods. Soil depth and thermal amplitude showed a temporal pattern characterized by inversely proportional magnitudes that followed an exponential behavior. The thermal amplitude of the Oxisol evaluated decreased with increasing depth, indicating soil thermal damping. In conclusion, the relationship between Oxisol and environmental temperature has significant implications for achieving sustainable agriculture and efficient water and plant resource management.

show abstract

Section: Discussionsupporting

confidence: 92%

Thermal Properties and Temporal Dynamics of Red Latosol (Oxisol) in Sustainable Agriculture and Environmental Conservation

Jordan,

Santos,

Freitas

et al. 2023

Resources

View full text Add to dashboard Cite

show abstract

“…In this method, a prediction model is established to simulate the soil temperature by analyzing the relationship between the soil temperature field and meteorological factors, environmental factors [15]- [17], and combining the observed and recorded historical data of soil temperature. Diniz et al [18] reformulated the mathematical model of soil temperature by inserting a variable referring to cloud cover. Wang et al [19] proposed an embedded network prediction model based on the gated recurrent unit (GRU) model, which was used to learn the local and global features of historical temperature for improving the prediction performance of soil temperature.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Analysis of Soil Temperature Field Based on Fiber Bragg Grating Sensor Array

Zhao

Fan

et al. 2022

IEEE Access

View full text Add to dashboard Cite

Studying the soil temperature field and its variation law is of great significance to the realtime service of agricultural production. To solve the problems of low detection efficiency and difficulty of distributed detection, a distributed detection method of soil temperature field using wavelength division multiplexing and space division multiplexing technologies based on fiber Bragg grating (FBG) sensor is proposed. In this scheme, the stainless steel tube encapsulating the FBG string was vertically buried in the measured soil, and the tunable laser method and the peak-seeking algorithm were used to demodulate the wavelength of each sensor of the FBG string. The soil temperature field measurement experiments were carried out in the farmland environment. The experimental results show that the proposed method can detect the soil temperature field in real time. The internal temperature of soil changes periodically with the periodic change of surface environment temperature. With the increase of depth, the influence of surface temperature on soil temperature gradually decreases, and the amplitude of soil temperature oscillation gradually decreases, but the hysteresis effect of temperature peak becomes more and more obvious. The ambient wind speed can reduce the temperature of soil surface and shallow layer. Soil moisture affects the speed of temperature transfer from the surface layer to the deep layers, and the hysteresis effect of temperature peak is more significant in the soil with higher moisture. Solar radiation has a great influence on the temperature of soil surface and shallow layer.INDEX TERMS Fiber Bragg grating, sensor array, soil temperature field, wavelength division multiplexing, space division multiplexing.

show abstract

“…However, these studies do not combine numerical calculations with practical monitoring very well [16,17]. The problem of non-uniform temperature fields under solar radiation is not explained from the perspective of theoretical calculations [18][19][20]. In addition, there are few investigations that referred to the thermal behavior.…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Behavior on the Safety Performance of the Pit Enclosure near Railway Foundations under Solar Radiation

Wang¹

2022

Sustainability

View full text Add to dashboard Cite

Thermal behavior often affects the performance of thin-walled steel structures and even becomes one of the controlling loads. Steel pipes are often used in foundation pit support. This problem of the thermal stress of steel pipes is very important. The Huhang Railway, a section of the high-speed railway from Huzhou to Hangzhou in Zhejiang Province, China, was examined in this study. In this paper, the displacement and stress in pit 358# of the Huhang Railway near the railway foundation was monitored, and a thermal coupling model was established. The temperature field distribution inside the foundation pit was calculated through solar radiation and ambient temperature, and the displacement and stress of the supporting structure and enclosure structure were calculated using the thermal expansion coefficient. The following conclusions were drawn from the comparison: (1) In addition to solar radiation, ambient radiation should also be taken into account at the same time, especially in the calculation of the substructure. (2) The temperature of the support structure was unevenly distributed, and the maximum temperature difference between the steel pipes on the east and west sides could reach from 18.9 °C up to 58.8 °C. The height angle of solar radiation was the main factor that led to this situation. (3) The difference in stress between the support structure and the enclosure structure was positively related to the change in temperature. When the temperature rose, the stress increased, and the horizontal displacement of the enclosure structure decreased, which was beneficial to the stability of the foundation pit and vice versa. (4) The thermal behavior had different effects on the stress at different depths and times, and had spatial and temporal heterogeneity. The enclosure stresses had a certain delay in response to temperature changes. The reasons for this are yet to be investigated.

show abstract

Reformulation of the Used Model to Estimate Soil Temperature

Cited by 3 publications

References 20 publications

Thermal Properties and Temporal Dynamics of Red Latosol (Oxisol) in Sustainable Agriculture and Environmental Conservation

Thermal Properties and Temporal Dynamics of Red Latosol (Oxisol) in Sustainable Agriculture and Environmental Conservation

Measurement and Analysis of Soil Temperature Field Based on Fiber Bragg Grating Sensor Array

Influence of Thermal Behavior on the Safety Performance of the Pit Enclosure near Railway Foundations under Solar Radiation

Contact Info

Product

Resources

About