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1. Developing novel hybrid models for estimation of daily soil temperature at various depths

Author:
Mehdizadeh, Saeid; Fathian, Farshad; Safari, Mir Jafar Sadegh; Khosravi, Ali
Source:
Soil & tillage research 2020 v.197 pp. 104513
ISSN:
0167-1987
Subject:
soil temperature,   etc   ; climate; gene expression; neural networks; Iran;     Show all 5 Subjects
Abstract:
... Estimation of soil temperature (ST) as one of the vital parameters of soil, which has an impact on many chemical and physical characteristics of soil, is of great importance in soil science. This study applies a time series-based model, namely fractionally autoregressive integrated moving average (FARIMA), as well as two machine learning-based models consisting of feed-forward back propagation neu ...
DOI:
10.1016/j.still.2019.104513

2. Soil respiration sensitivity to temperature in biocrusted soils in a desert-shrubland ecosystem

Author:
Liu, Peng; Zha, Tianshan; Jia, Xin; P.-A. Bourque, Charles; Tian, Yun; Ma, Jingyong; Bai, Yujie; Wu, Yajuan; Muhammad, Hayat
Source:
Catena 2020 v.191 pp. 104556
ISSN:
0341-8162
Subject:
soil temperature,   etc   ; ecosystems; global warming; prediction; soil respiration; soil water; time series analysis; China;     Show all 8 Subjects
Abstract:
... A precise prediction of the response in soil respiration (Rₛ) to climate warming requires the temperature-driven portion of the response to be characterized separately from the global, undecomposed response. Eliminating non-temperature-driven effects, which tend to confound the response in Rₛ, is possible with Singular Spectrum Analysis (SSA), a non-parametric approach to timeseries analysis. Rₛ a ...
DOI:
10.1016/j.catena.2020.104556

3. Soil temperature gradient as a useful tool for small water leakage detection from district heating pipes in buried channels

Author:
Perpar, Matjaž; Rek, Zlatko
Source:
Energy 2020 v.201 pp. 117684
ISSN:
0360-5442
Subject:
soil temperature,   etc   ; concrete; heat transfer; heating systems; insulating materials; monitoring; pipelines; pipes; thermal conductivity;     Show all 9 Subjects
Abstract:
... A methodology for detecting small leakages from pipelines placed in buried concrete channels is presented. This methodology is based on determining soil temperature gradient using appropriate numerical and experimental processes. An equivalent thermal conductivity (λₑq) was defined based on the known heat flux and temperature gradient through the insulation subjected to the leakage. Two dimensiona ...
DOI:
10.1016/j.energy.2020.117684

4. Verification of high resolution (12 km) Global Ensemble Prediction System

Author:
Mamgain, Ashu; Sarkar, Abhijit; Rajagopal, E.N.
Source:
Atmospheric research 2020 v.236 pp. 104832
ISSN:
0169-8095
Subject:
soil temperature,   etc   ; prediction; rain; soil water content; surface water temperature; tropics; uncertainty; weather forecasting; wind; India;     Show all 10 Subjects
Abstract:
... Ensemble Prediction Systems (EPSs) are used to estimate the uncertainty in a weather forecast as well as the most likely outcome. To improve weather forecasts and services, the global EPS at the NCMRWF has been upgraded to 12 km horizontal resolution (with 22 perturbed +1 control members). Although the upgraded version of EPS had become operational from 1st June 2018 in the newly acquired high-per ...
DOI:
10.1016/j.atmosres.2019.104832

5. Effects of soil structure on thermal softening of yield stress

Author:
Cheng, Q.; Zhou, C.; Ng, C.W.W.; Tang, C.S.
Source:
Engineering geology 2020 v.269 pp. 105544
ISSN:
0013-7952
Subject:
soil temperature,   etc   ; clay; isotropy; loess; microstructure; scanning electron microscopes; scanning electron microscopy; silt; soil structure;     Show all 9 Subjects
Abstract:
... Thermal softening is generally referred as the reduction of yield stress with increasing temperature. Previous experimental studies of thermal softening focus on a single type of specimen (either intact or recompacted). In this study, thermal softening of saturated intact, recompacted and reconstituted loess specimens was investigated through temperature-controlled isotropic compression tests. Sca ...
DOI:
10.1016/j.enggeo.2020.105544

6. Investigation of estimation performance for different soil areas

Author:
Pekel, Engin
Source:
Environmental monitoring and assessment 2020 v.192 no.5 pp. 284
ISSN:
0167-6369
Subject:
soil temperature,   etc   ; air temperature; algorithms; climate; decision support systems; forest soils; forests; relative humidity; soil water;     Show all 9 Subjects
Abstract:
... Soil plays a vital role in the climate system. This paper performs decision tree regression to estimate soil moisture (SM) by considering different parameters that include air temperature, time, relative humidity, and soil temperature. Besides, this paper investigates the effects of the parameters of decision tree regression by utilizing the response surface. The obtained estimation results of two ...
DOI:
10.1007/s10661-020-08251-z

7. Large-scale living laboratory of seasonal borehole thermal energy storage system for urban district heating

Author:
Guo, Fang; Zhu, Xiaoyue; Zhang, Junyue; Yang, Xudong
Source:
Applied energy 2020 v.264 pp. 114763
ISSN:
0306-2619
Subject:
soil temperature,   etc   ; energy efficiency; heat; industrial wastes; monitoring; solar energy; thermal energy; China;     Show all 8 Subjects
Abstract:
... To obtain a better understanding of the characteristics of large-scale seasonal borehole thermal energy storage (BTES), a living laboratory was developed in Chifeng, China. In the living laboratory, combined heat sources of industrial waste heat and solar energy were adopted for 500000 m³ borehole thermal energy storage. The concept and design of the system, as well as the first operation results ...
DOI:
10.1016/j.apenergy.2020.114763

8. Effect of Clouds on the Diurnal Evolution of the Atmospheric Boundary-Layer Height Over a Tropical Coastal Station

Author:
Davis, Edwin V.; Rajeev, K.; Mishra, Manoj Kumar
Source:
Boundary-layer meteorology 2020 v.175 no.1 pp. 135-152
ISSN:
0006-8314
Subject:
soil temperature,   etc   ; coasts; microwave radiometers; mixing; pollutants; radiative forcing; simulation models; troposphere; water vapor; winter;     Show all 10 Subjects
Abstract:
... The growth of the daytime convective atmospheric boundary layer, which plays a pivotal role in the vertical mixing and dispersal of water vapour and pollutants, is modulated by cloud radiative effects. Assessment of this cloud effect is sparse in any geographical region and non-existent over tropical coastal regions. We investigate the effect of clouds on the diurnal evolution of boundary-layer he ...
DOI:
10.1007/s10546-019-00497-6

9. Estimation of soil moisture using decision tree regression

Author:
Pekel, Engin
Source:
Theoretical and applied climatology 2020 v.139 no.3-4 pp. 1111-1119
ISSN:
0177-798X
Subject:
soil temperature,   etc   ; air temperature; algorithms; climate; decision support systems; food production; relative humidity; soil water;     Show all 8 Subjects
Abstract:
... Soil moisture (SM) is a significant factor in the climate system. The accurate determination of SM has high importance in food production to satisfy the increasing demand for food and the chemical processes of soil. This paper applies decision tree regression to estimate SM considering different parameters including air temperature, time, relative humidity, and soil temperature. The presented meth ...
DOI:
10.1007/s00704-019-03048-8

10. Soil respiration dynamics in a semi-fixed sand dune under the pioneer shrub Artemisia halodendron Turcz. ex Bess. in the Horqin sandy land, northeastern China

Author:
Luo, Yongqing; Zhao, Xueyong; Ding, Jieping; Li, Yuqiang; Liu, Xinping; Wang, Tao; Luo, Yayong
Source:
Arid land research and management 2020 v.34 no.1 pp. 36-51
ISSN:
1532-4990
Subject:
soil temperature,   etc   ; Artemisia; carbon dioxide; dunes; growing season; roots; shrubs; soil respiration; China;     Show all 9 Subjects
Abstract:
... Soil respiration is a major pathway by which carbon dioxide (CO₂) fixed by terrestrial plants returns to the atmosphere. Studies of the dynamics of soil respiration in sandy land are rare and the contribution (Rc) of plant root respiration to the total soil respiration (Rₜ) is not well known. In this study, Rₜ in a semi-fixed dune planted with Artemisia halodendron was separated into autotrophic ( ...
DOI:
10.1080/15324982.2019.1629675

11. Experimental study on radiation utilization efficiency and soil temperature in paddy field with different irrigation methods in Northeast China

Author:
Zheng, Ennan; Zhang, Chao; Qi, Zhijuan; Zhang, Zhongxue
Source:
Paddy and water environment 2020 v.18 no.1 pp. 179-191
ISSN:
1611-2490
Subject:
soil temperature,   etc   ; biomass; chlorophyll; cold; flood irrigation; heading; heat transfer; leaf area index; paddies; rice; China;     Show all 11 Subjects
Abstract:
... In order to investigate the radiation utilization efficiency and soil temperature with different irrigation methods in cold region and black glebe, northeast, China, three irrigation methods namely control irrigation (CI), wet irrigation (WI) and flood irrigation (FI) were carried out in the field conditions. The radiation utilization efficiency (RUE) and soil temperature with different irrigation ...
DOI:
10.1007/s10333-019-00773-8

12. Coupled variations of soil temperature and moisture in reclaimed fields filled with coal gangue of different grain size distributions

Author:
Zhang, Kun; Xu, Liang-ji; Huang, Guo-dong; Meng, Xue-ying; Yao, Jin-xin; Jiang, Bao-xing
Source:
Journal of soils and sediments 2020 v.20 no.4 pp. 2248-2259
ISSN:
1439-0108
Subject:
soil temperature,   etc   ; coal; heat; high water table; land restoration; mining; particle size distribution; soil water; subsidence; summer; tillage; winter;     Show all 12 Subjects
Abstract:
... PURPOSE: This study was aimed at investigating the effects of different reclamation modes on coupled variations of soil temperature and moisture. MATERIALS AND METHODS: An experimental field was established, which consists of three plots (plots I, II, and III) filled with coal gangue of different grain size distributions (coarse grain, middle-coarse grain, and fine grain) and covered with the same ...
DOI:
10.1007/s11368-020-02579-2

13. Regional distribution patterns of wetland monocots with different root turnover strategies are associated with local variation in soil temperature

Author:
Courchesne, Dominique N.; Wilson, Adrienne Z.; Ryser, Peter
Source:
Thenew phytologist 2020 v.226 no.1 pp. 86-97
ISSN:
0028-646X
Subject:
soil temperature,   etc   ; Liliopsida; autumn; climate; dominant species; evergreen trees; gardens; growing season; leaves; overwintering; roots; spring; wetlands; winter; Ontario;     Show all 15 Subjects
Abstract:
... Herbaceous perennial wetland monocots in Northern Ontario, Canada, show dichotomous root overwintering patterns, either with full senescence in autumn or survival over the winter, comparable to deciduous and evergreen leaf habits in trees. To test if these root strategies differ in their associations with growing season length, soil temperatures were recorded in autumn, winter and spring on 38 wet ...
DOI:
10.1111/nph.16328

14. Effect of introducing weather parameters on the accuracy of milk production forecast models

Author:
Zhang, Fan; Upton, John; Shalloo, Laurence; Shine, Philip; Murphy, Michael D.
Source:
Information processing in agriculture 2020 v.7 no.1 pp. 120-138
ISSN:
2214-3173
Subject:
soil temperature,   etc   ; Holstein; dairy cows; databases; lactation; meteorological data; milk; milk yield; models; prediction; regression analysis; solar radiation;     Show all 12 Subjects
Abstract:
... The objective of this study was to analyze the effect of adding meteorological data to the training process of two milk production forecast models. The two models chosen were the nonlinear auto-regressive model with exogenous input (NARX) and the multiple linear regression (MLR) model. The accuracy of these models were assessed using seven different combinations of precipitation, sunshine hours an ...
DOI:
10.1016/j.inpa.2019.04.004

15. Effect of intermittent operation on the thermal efficiency of energy tunnels under varying tunnel air temperature

Author:
Ogunleye, Oluwaseun; Singh, Rao Martand; Cecinato, Francesco; Chan Choi, Jung
Source:
Renewable energy 2020 v.146 pp. 2646-2658
ISSN:
0960-1481
Subject:
soil temperature,   etc   ; air temperature; energy; heat pumps; heat transfer; mathematical models; operating costs; renewable energy sources; temperature profiles;     Show all 9 Subjects
Abstract:
... This paper focusses on hot underground tunnels and studies the effect of ground source heat pump (GSHP) intermittent operation and changing tunnel air temperature profile on energy tunnel thermal efficiency. The effects of heat pump operation on the tunnel surrounding soil and the soil recovery rate when the heat pump is not in operation were also studied. A 3D numerical model was developed to sim ...
DOI:
10.1016/j.renene.2019.08.088

16. Soil temperature in an open site and below two plantation forest canopies in a tropical highland area, southern Ethiopia

Author:
Alem, Shiferaw; Madera, Petr; Pavlis, Jindrich
Source:
Theoretical and applied climatology 2020 v.139 no.3-4 pp. 907-914
ISSN:
0177-798X
Subject:
soil temperature,   etc   ; Grevillea robusta; Juniperus procera; air temperature; analysis of variance; forest canopy; forest plantations; rain; soil depth; Ethiopia;     Show all 10 Subjects
Abstract:
... This paper examines soil temperature (Tₛ) in two different plantation forests relative to an adjacent open land area in a tropical highland environment. To achieve the objectives, Tₛ in a Juniperus procera (JP) plantation, a Grevillea robusta (GR) plantation, and in the adjacent open land (OL) area were measured. One-way ANOVA and Pearson’s correlation were used for the data analysis. The result i ...
DOI:
10.1007/s00704-019-03031-3

17. Spatio-temporal investigation of surface soil hardness on professional football field

Author:
Biraderoglu, Metin; Kaplan, Sema; Basaran, Mustafa
Source:
Environmental monitoring and assessment 2020 v.192 no.2 pp. 151
ISSN:
0167-6369
Subject:
soil temperature,   etc   ; autumn; bulk density; disturbed soils; geostatistics; hardness; models; soil sampling; spring; statistical analysis; summer; texture; water content; winter;     Show all 14 Subjects
Abstract:
... The present study was conducted to identify the minimum number of sampling points to monitor surface hardness of the pitches through geostatistical methods and to determine spatial and temporal distribution of surface hardness in autumn, winter, spring, and summer periods. Initial samplings were performed from 126 points and with data reduction, the optimum number of sampling points was identified ...
DOI:
10.1007/s10661-020-8087-7

18. Spatiotemporal variations in 3.2 m soil temperature in China during 1980–2017

Author:
Zhou, Ya; Gao, Xiaoqing; Zhang, Kai; Li, Yujie; Yang, Liwei
Source:
Climate dynamics 2020 v.54 no.1-2 pp. 1233-1244
ISSN:
0930-7575
Subject:
soil temperature,   etc   ; algorithms; climate; climate change; cooling; energy; hydrologic cycle; spatial variation; temporal variation; China; Yangtze River;     Show all 11 Subjects
Abstract:
... Soil temperature is an important variable of earth’s surface system, and studying it is of great benefit to understanding the energy and hydrological cycles and climate change. Based on soil temperature data at a depth of 3.2 m from 113 stations in China from 1980 to 2017, the spatial distribution and temporal variation of the soil temperatures in China were analyzed by using a fuzzy C-means algor ...
DOI:
10.1007/s00382-019-05055-x

19. Temperature and body mass drive earthworm (Eisenia fetida) sensitivity to a popular glyphosate-based herbicide

Author:
Pochron, Sharon; Choudhury, Mahin; Gomez, Rhiannon; Hussaini, Sajjad; Illuzzi, Kyra; Mann, Michael; Mezic, Mateo; Nikakis, Jaqueline; Tucker, Clara
Source:
Applied soil ecology 2019 v.139 pp. 32-39
ISSN:
0929-1393
Subject:
soil temperature,   etc   ; Eisenia fetida; body condition; earthworms; glyphosate;     Show all 5 Subjects
Abstract:
... Researchers have analyzed the effects of glyphosate and glyphosate-based formulations on earthworm health. A full literature review shows negative, positive, and non-significant impacts on a suite of outcomes. Pilot studies from our lab have produced similar inconsistencies. This study aimed to determine which factors drive earthworm sensitivity to Roundup-Ready-To-Use III®, a popular herbicide. T ...
DOI:
10.1016/j.apsoil.2019.03.015

20. Changes in plot-scale runoff generation processes from the spring–summer transition period to the summer months in a permafrost-dominated catchment

Author:
Xiao, Xiong; Zhang, Fan; Che, Tao; Shi, Xiaonan; Zeng, Chen; Wang, Guanxing
Source:
Journal of hydrology 2020 v.587 pp. 124966
ISSN:
0022-1694
Subject:
soil temperature,   etc   ; air temperature; alpine meadows; antecedent moisture; evapotranspiration; frozen soils; least squares; models; permafrost; runoff; snow; snowmelt; soil water; soil water storage; subsurface flow; summer; watersheds; China;     Show all 18 Subjects
Abstract:
... The hydrological regimes in permafrost-dominated catchments have unique characteristics. However, studies based on plot-scale experiments of runoff generation processes and the factors influencing these processes are limited on the Tibetan Plateau, which is experiencing rapid warming and permafrost degradation. Runoff generation processes were studied on a standard runoff plot (5 × 20 m) in a perm ...
DOI:
10.1016/j.jhydrol.2020.124966