Meteorological and soil temperature data from the treatment plots at the Aspen FACE Experiment, 1999-2009

Author(s):  
Mark E. Kubiske
1979 ◽  
Vol 101 (4) ◽  
pp. 225-231 ◽  
Author(s):  
S. W. Pearson

Extensive soil temperature measurements have been taken for more than two years in a field test designed to monitor the performance of thermal vertical support members used to support elevated sections of the trans-Alaska pipeline as it crosses marginal permafrost. Thermal aspects of the design are summarized and soil temperature data are presented which demonstrate the ability of the overall thermal vertical support member system to protect the surrounding permafrost.


HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 667c-667
Author(s):  
Charlotte Mundy ◽  
Nancy G. Creamer ◽  
Jane Frampton

Regional growers have expressed an interest in the feasibility of producing potatoes on wide beds. Using wide beds decreases compaction and may increase water available to the crop due to the elimination of postplanting cultivation, or hilling, required in conventional rows. The middle row of wide beds may have cooler soil temperatures than the other rows in the bed. In addition, wide beds allowed for a planting density 1.5-times greater than conventional rows, which could significantly increase yields. Potatoes, `Atlantic', were planted mid-March into conventional rows on 38-inch centers and 6-foot 4-inch-wide beds, each bed with three rows. Plots were 50 feet long. Initial soil moisture contents in the middle of the bed, the outer rows of the bed and the conventional rows were not significantly different. Initial soil temperature data suggests that fluctuations in temperature are greatest in the conventional rows and least in the middle row of the wide beds. Soil temperature and soil moisture are reported. Marketable yields from wide beds are compared to marketable yields from conventional rows. Influence on potato size distribution and quality factors also are reported.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Alexandre F. Santos ◽  
Heraldo J. L. de Souza ◽  
Mauricio P. Cantao ◽  
Pedro D. Gaspar

Abstract Geothermal heat pumps are broadly used in developed countries but scarcely in Brazil, in part because there is a lack of Brazilian soil temperature data. The aims of this work are: to present soil temperature measurements and to compare geothermal heat pump system performances with conventional air conditioning systems. Geothermal temperature measurement results are shown for ten Paraná State cities, representing different soil and climate conditions. The measurements were made yearlong with calibrated equipment and digital data acquisition system in different measuring stations. Geothermal and ambient temperature data were used for simulations of the coeficient of performance (COP), by means of a working fluid pressure-enthalpy diagram based software for vapor-compression cycle. It was verified that geothermal temperature measured between January 13 to October 13, 2013, varied from 16 to 24 °C, while room temperature has varied between 2 and 35 °C. Average COP values for conventional system were 3.7 (cooling mode) and 5.0 kW/kW (heating mode), corresponding to 5.9 and 7.9 kW/kW for geothermal system. Hence it was verified an average eficiency gain of 59%with geothermal system utilization in comparison with conventional system.


Geosciences ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 334-360 ◽  
Author(s):  
Carlos Pérez Díaz ◽  
Tarendra Lakhankar ◽  
Peter Romanov ◽  
Reza Khanbilvardi ◽  
Yunyue Yu

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