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1. Effect of vertical ground temperature distribution on parameter estimation of in-situ thermal response test with unstable heat rate

Author:
Zhang, Changxing; Song, Wei; Liu, Yufeng; Kong, Xiangqiang; Wang, Qing
Source:
Renewable energy 2019 v.136 pp. 264-274
ISSN:
0960-1481
Subject:
soil temperature,   etc   ; algorithms; heat; heat exchangers; models; renewable energy sources; thermal conductivity;     Show all 7 Subjects
Abstract:
... This paper proposed a parameter estimation method for identifying ground thermal conductivity and volumetric heat capacity using the Nelder-Mead Simplex search algorithm (NMSA) in in-situ thermal response test (TRT) with unstable heat rate, the duct storage system (DST) model for borehole heat exchanger (BHE) was applied to do with variable heat rate and the vertical ground temperature distributio ...
DOI:
10.1016/j.renene.2018.12.112

2. Parameter analysis of single U-tube GHE and dynamic simulation of underground temperature field round one year for GSHP

Author:
Bi, Yuehong; Lyu, Tianli; Wang, Hongyan; Sun, Ruirui; Yu, Meize
Source:
Energy 2019 v.174 pp. 138-147
ISSN:
0360-5442
Subject:
soil temperature,   etc   ; cooling; heat exchangers; heat pumps; heat transfer; models; pipes; summer; winter;     Show all 9 Subjects
Abstract:
... Based on a quasi 3-D steady model inside and a 2-D unsteady model outside of the borehole of ground heat exchanger(GHE), the relationship between the heat exchange rate per depth of borehole and main parameters (center-to-center distance of two branch pipes, radius and depth of the borehole) has been analyzed. The rational values of those design parameters with considering the heat exchange rate p ...
DOI:
10.1016/j.energy.2019.02.160

3. Chromium(VI) formation via heating of Cr(III)-Fe(III)-(oxy)hydroxides: A pathway for fire-induced soil pollution

Author:
Burton, Edward D.; Choppala, Girish; Vithana, Chamindra L.; Karimian, Niloofar; Hockmann, Kerstin; Johnston, Scott G.
Source:
Chemosphere 2019 v.222 pp. 440-444
ISSN:
0045-6535
Subject:
soil temperature,   etc   ; X-ray absorption spectroscopy; chromium; fires; hydroxides; oxidation; pH; phosphates; soil pollution;     Show all 9 Subjects
Abstract:
... Mixed Cr(III)-Fe(III) (oxy)hydroxides are important Cr-bearing phases in natural, unpolluted soil. Fires frequently affect large areas of land around the world, causing the temporary development of elevated soil temperatures. This study examines the hypothesis that heating Cr(III)-Fe(III) (oxy)hydroxides at temperatures which occur in surface soils during fires can drive rapid oxidation of Cr(III) ...
DOI:
10.1016/j.chemosphere.2019.01.172

4. Variations in belowground carbon use strategies under different climatic conditions

Author:
Hu, Zhaoyong; Wang, Genxu; Sun, Xiangyang; Wang, Jian; Chen, Xiaopeng; Song, Chunlin; Song, Xiaoyan; Lin, Shan
Source:
Agricultural and forest meteorology 2019 v.268 pp. 32-39
ISSN:
0168-1923
Subject:
soil temperature,   etc   ; altitude; carbon; carbon cycle; climatic factors; climatic zones; mountains; soil respiration; wet season;     Show all 9 Subjects
Abstract:
... Belowground carbon is important to the terrestrial carbon cycle, and altitudinal gradients in mountainous areas provide natural experiment sites for analysing the carbon cycle under different climatic conditions. Therefore, to better understand belowground carbon use strategies under different climatic conditions, we quantified soil respiration (RS) and its components (heterotrophic respiration (R ...
DOI:
10.1016/j.agrformet.2019.01.005

5. Exploring the predictive performance of several temperature measurements on Neotropical dung beetle assemblages: Methodological implications

Author:
Lobo, Jorge M.; Da Silva, Pedro G.; Hensen, Maristela C.; Amore, Valentina; Hernández, Malva I. M.
Source:
Entomological science 2019 v.22 no.1 pp. 56-63
ISSN:
1343-8786
Subject:
soil temperature,   etc   ; air; altitude; dung beetles; forests; prediction; species richness; surveys; Brazil;     Show all 9 Subjects
Abstract:
... Basic characteristics of species assemblages are frequently related to temperature variables recorded at a coarse‐grained scale. In this study, 15 min instant‐measurements of environmental and soil temperatures were recorded during 1 year in six Atlantic Forest sites of southern Brazil, ranging from 250 to 1,630 m a.s.l. These measurements were used to examine the comparative explanatory capacity ...
DOI:
10.1111/ens.12340

6. Transient heat transfer performance of a vertical double U-tube borehole heat exchanger under different operation conditions

Author:
Zhu, Li; Chen, Sarula; Yang, Yang; Sun, Yong
Source:
Renewable energy 2019 v.131 pp. 494-505
ISSN:
0960-1481
Subject:
soil temperature,   etc   ; heat exchangers; heat transfer; models; renewable energy sources; thermal energy; thermal properties;     Show all 7 Subjects
Abstract:
... The transient thermal performance of a vertical double U-tube borehole heat exchanger (BHE) was numerically studied by validated heat transfer model. Further, the influence of several operation parameters, including inlet velocity, temperature and operation interval, on radial/axial soil temperature distribution were investigated. The simulation result showed that the increased amplitude of the BH ...
DOI:
10.1016/j.renene.2018.07.073

7. Ammonia flux measurements above a corn canopy using relaxed eddy accumulation and a flux gradient system

Author:
Nelson, Andrew J.; Lichiheb, Nebila; Koloutsou-Vakakis, Sotiria; Rood, Mark J.; Heuer, Mark; Myles, LaToya; Joo, Eva; Miller, Jesse; Bernacchi, Carl
Source:
Agricultural and forest meteorology 2019 v.264 pp. 104-113
ISSN:
0168-1923
Subject:
soil temperature,   etc   ; agroecosystems; air quality; ammonia; canopy; corn; emissions; models; nitrogen cycle; urease inhibitors; Illinois;     Show all 11 Subjects
Abstract:
... Studies of NH3 flux over agricultural ecosystems in the USA are limited by low temporal resolution (typically hours or days) and sparse spatial coverage, with no studies over corn in the Midwest USA. We report on NH3 flux measurements over a corn canopy in Central Illinois, USA, using the relaxed eddy accumulation (REA) and flux gradient (FG) methods, providing measurements at 4 h and 0.5 h interv ...
DOI:
10.1016/j.agrformet.2018.10.003

8. Effects of experimental warming and increased precipitation on soil respiration in an alpine meadow in the Northern Tibetan Plateau

Author:
Yu, Cheng-Qun; Wang, Jiang-Wei; Shen, Zhen-Xi; Fu, Gang
Source:
The Science of the total environment 2019 v.647 pp. 1490-1497
ISSN:
0048-9697
Subject:
soil temperature,   etc   ; alpine meadows; climate change; ecosystems; growing season; soil respiration; soil water; uncertainty; China;     Show all 9 Subjects
Abstract:
... Uncertainty on the response of soil respiration (Rs) to warming and increased precipitation on the Tibetan Plateau can limit our ability to predict how alpine ecosystems will respond to future climate change. Based on a warming (control, low- and high-level) and increased precipitation (control, low- and high-level) experiment, the response of Rs to experimental warming and increased precipitation ...
DOI:
10.1016/j.scitotenv.2018.08.111

9. Decreased soil substrate availability with incubation time weakens the response of microbial respiration to high temperature in an alpine meadow on the Tibetan Plateau

Author:
Liu, Hanke; Lv, Wangwang; Wang, Shiping; Luo, Caiyun; Zhang, Zhenhua; Wang, Zhezhen; Jiang, Lili; Cui, Xiaoyong
Source:
Journal of soils and sediments 2019 v.19 no.1 pp. 255-262
ISSN:
1439-0108
Subject:
soil temperature,   etc   ; acclimation; alpine meadows; glucose; heat; soil respiration; soil water; water holding capacity; China;     Show all 9 Subjects
Abstract:
... PURPOSE: Increased microbial respiration (Rm) usually decreases with warming time in incubation and field manipulative experiments, and substrate depletion and/or microbial thermal acclimation to warming is hypothesized to be responsible for this decrease. However, few studies have been conducted to determine the mechanism for this decrease, especially in alpine regions. MATERIALS AND METHODS: Fir ...
DOI:
10.1007/s11368-018-1995-2

10. Observed soil temperature trends associated with climate change in the Tibetan Plateau, 1960–2014

Author:
Fang, Xuewei; Luo, Siqiong; Lyu, Shihua
Source:
Theoretical and applied climatology 2019 v.135 no.1-2 pp. 169-181
ISSN:
0177-798X
Subject:
soil temperature,   etc   ; air temperature; global warming; snowpack; soil depth; soil heating; summer; China;     Show all 8 Subjects
Abstract:
... Soil temperature, an important indicator of climate change, has rarely explored due to scarce observations, especially in the Tibetan Plateau (TP) area. In this study, changes observed in five meteorological variables obtained from the TP between 1960 and 2014 were investigated using two non-parametric methods, the modified Mann–Kendall test and Sen’s slope estimator method. Analysis of annual ser ...
DOI:
10.1007/s00704-017-2337-9

11. Mapping subsurface tile drainage systems with thermal images

Author:
Woo, Dong Kook; Song, Homin; Kumar, Praveen
Source:
Agricultural water management 2019 v.218 pp. 94-101
ISSN:
0378-3774
Subject:
soil temperature,   etc   ; agricultural land; air; image analysis; soil water; subsurface drainage; tile drainage; tillage; topography; water quality;     Show all 10 Subjects
Abstract:
... In Midwestern agricultural fields, subsurface tile drainage has been widely used to remove excess water from the soil through perforated tubes installed beneath the ground surface. While it plays an important role in enabling agricultural activities in wet but productive areas, this system is a major driving factor affecting water and nutrient dynamics, and water quality in this region. However, d ...
DOI:
10.1016/j.agwat.2019.01.031

12. A reliable linear stochastic daily soil temperature forecast model

Author:
Zeynoddin, Mohammad; Bonakdari, Hossein; Ebtehaj, Isa; Esmaeilbeiki, Fatemeh; Gharabaghi, Bahram; Zare Haghi, Davoud
Source:
Soil & tillage research 2019 v.189 pp. 73-87
ISSN:
0167-1987
Subject:
soil temperature,   etc   ; arid zones; irrigation; neural networks; spectral analysis; stochastic processes; temperature profiles; water management; Azerbaijan; Iran;     Show all 10 Subjects
Abstract:
... Forecasting soil temperature profile is recognized as vital information for irrigation demand forecast in a modern/efficient agricultural water management framework in arid regions. A new linear stochastic model is proposed to more accurately forecast daily soil temperature (DST) profile at depths of 5, 10 and 20 cm below ground surface. The data used to test the proposed new method is collected f ...
DOI:
10.1016/j.still.2018.12.023

13. Extrafloral nectaries of Cylindropuntia imbricata (Cactaceae) in the southern Chihuahuan Desert: anatomy and interaction with ants

Author:
Ávila-Argáez, Melissa; Yáñez-Espinosa, Laura; Badano, Ernesto; Barragán-Torres, Felipe; Flores, Joel
Source:
Arthropod-plant interactions 2019 v.13 no.3 pp. 401-409
ISSN:
1872-8855
Subject:
soil temperature,   etc   ; Crematogaster opuntiae; Cylindropuntia imbricata; Liometopum apiculatum; Pseudomyrmex; cacti and succulents; deserts; drought; irrigation; nectar; nectaries; Chihuahuan Desert; Mexico;     Show all 13 Subjects
Abstract:
... Cylindropuntia imbricata is a common cactus species from North American deserts that has extrafloral nectaries (EFNs). We assessed: (i) the anatomical structure of the EFNs of C. imbricata to determine whether they are vascularized or not, and (ii) whether water availability in the soil and soil temperature are related to the abundance of ants visiting C. imbricata. The study site was in San Luis ...
DOI:
10.1007/s11829-018-9656-3

14. Spatial pattern of windbreak effects on maize growth evaluated by an unmanned aerial vehicle in Hokkaido, northern Japan

Author:
Iwasaki, Kenta; Torita, Hiroyuki; Abe, Tomoyuki; Uraike, Takafumi; Touze, Marie; Fukuchi, Minoru; Sato, Hirokazu; Iijima, Toshimasa; Imaoka, Kouichi; Igawa, Hisashi
Source:
Agroforestry systems 2019 v.93 no.3 pp. 1133-1145
ISSN:
0167-4366
Subject:
soil temperature,   etc   ; agroforestry; corn; crop production; labor; normalized difference vegetation index; shade; surveys; trees; unmanned aerial vehicles; windbreaks; Japan;     Show all 12 Subjects
Abstract:
... Effects of tree windbreaks on crop production vary from field to field. However, considerable labor is required to evaluate the effects of windbreaks by conducting yield surveys in multiple fields. The present study aimed to clarify whether the spatial pattern of windbreak effects on maize growth can be evaluated using an unmanned aerial vehicle (UAV) in a field with a windbreak in Hokkaido, north ...
DOI:
10.1007/s10457-018-0217-7

15. Implementation of the effect of urease inhibitor on ammonia emissions following urea-based fertilizer application at a Zea mays field in central Illinois: A study with SURFATM-NH3 model

Author:
Lichiheb, Nebila; Myles, LaToya; Personne, Erwan; Heuer, Mark; Buban, Michael; Nelson, Andrew J.; Koloutsou-Vakakis, Sotiria; Rood, Mark J.; Joo, Eva; Miller, Jesse; Bernacchi, Carl
Source:
Agricultural and forest meteorology 2019 v.269-270 pp. 78-87
ISSN:
0168-1923
Subject:
soil temperature,   etc   ; Zea mays; ammonia; dynamic models; emissions; environmental factors; fertilizer application; particulates; urea fertilizers; urease inhibitors; volatilization; Illinois;     Show all 12 Subjects
Abstract:
... Agriculture is the main source of ammonia (NH3) emissions in the atmosphere. NH3 is precursor to secondary fine particulate matter, which is of concern for its impacts on health and visibility. There are a limited number of field measurements of NH3 emissions from fertilizer application in the US, and this limits our understanding of the importance of individual NH3 source and sink processes in co ...
DOI:
10.1016/j.agrformet.2019.02.005

16. Experimental and numerical investigations on the thermal performance of a borehole ground heat exchanger with PCM backfill

Author:
Yang, Weibo; Xu, Rui; Yang, Binbin; Yang, Jingjing
Source:
Energy 2019 v.174 pp. 216-235
ISSN:
0360-5442
Subject:
soil temperature,   etc   ; cooling; energy; geothermal energy; heat exchangers; heat transfer; latent heat; mathematical models; oleic acid; phase transition; summer; winter;     Show all 12 Subjects
Abstract:
... Borehole ground heat exchanger (BGHE) with phase change material (PCM) backfill is a new type of efficient geothermal energy utilization technology. In this paper, a simulation experimental system on the thermal performance of BGHE with PCM backfill has been built. The experimental performance investigations of the BGHE operated in summer and winter modes have been conducted. The results indicate ...
DOI:
10.1016/j.energy.2019.02.172

17. Low cold tolerance of the invasive lizard Eutropis multifasciata constrains its potential elevation distribution in Taiwan

Author:
Lin, Te-En; Chen, Tai-Yu; Wei, Hsin-Lin; Richard, Romain; Huang, Shu-Ping
Source:
Journal of thermal biology 2019 v.82 pp. 115-122
ISSN:
0306-4565
Subject:
soil temperature,   etc   ; body temperature; climate; cold; cold tolerance; invasive species; lizards; models; overwintering; prediction; survival rate; weather; winter; Taiwan;     Show all 14 Subjects
Abstract:
... 1. The invasive many-lined sun skink, Eutropis multifasciata, is established in much of southern Taiwan and is spreading northward. We investigated whether winter temperatures constrain further dispersion of this skink by comparing its cold tolerance to the spatial distribution of winter temperatures in Taiwan.2. We measured the 28-day survival rate of this species at 4 constant temperatures (10−1 ...
DOI:
10.1016/j.jtherbio.2019.03.015

18. Performance and feasibility study of hybrid ground source heat pump system assisted with cooling tower for one office building based on one Shanghai case

Author:
Liu, Zhijian; Li, Yuanwei; Xu, Wei; Yin, Hang; Gao, Jun; Jin, Guangya; Lun, Liyong; Jin, Guohui
Source:
Energy 2019 v.173 pp. 28-37
ISSN:
0360-5442
Subject:
soil temperature,   etc   ; cold; cooling towers; electric energy consumption; feasibility studies; heat pumps; pipes; simulation models; summer; winter; China;     Show all 11 Subjects
Abstract:
... To relieve soil thermal accumulation and performance degradation over a long-time operation for ground source heat pump (GSHP) system in cooling-dominated area, a hybrid GSHP system with cooling tower (HGSHP) was proposed. The purpose of this paper is to study the performance and feasibility of HGSHP in Shanghai. Firstly, the simulation model of GSHP system for an office building was established b ...
DOI:
10.1016/j.energy.2019.02.061

19. 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 2019
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

20. Measuring field ammonia emissions and canopy ammonia fluxes in agriculture using portable ammonia detector method

Author:
Yang, Yang; Ni, Xiaoyu; Liu, Binmei; Tao, Liangzhi; Yu, Lixiang; Wang, Qi; Yang, Ye; Liu, Jing; Wu, Yuejin
Source:
Journal of cleaner production 2019 v.216 pp. 542-551
ISSN:
0959-6526
Subject:
soil temperature,   etc   ; absorption; ammonia; ammonium; canopy; emissions; growing season; leaf area index; monitoring; paddies; pollution; pollution control; rice; wheat;     Show all 14 Subjects
Abstract:
... A comprehensive understanding of field ammonia (NH3) emissions and canopy ammonia fluxes in agriculture is beneficial for controlling ammonia pollution and achieving cleaner production. However, there is little consensus about ammonia emissions and fluxes in field conditions due to a lack of simple methods suitable for measuring field ammonia emissions and canopy ammonia fluxes. The study aimed to ...
DOI:
10.1016/j.jclepro.2018.12.109