scholarly journals The Summer Climate in the Accumulation Area of the Salmon Glacier

1958 ◽  
Vol 3 (23) ◽  
pp. 194-206 ◽  
Author(s):  
C. J. Adkins
Keyword(s):  
British Columbia ◽  
Heat Balance ◽  
Meteorological Station ◽  
Snow Surface ◽  
Snow Density ◽  
Summer Climate ◽  
Temperature And Humidity ◽  
The Heat Balance

AbstractDuring the summer of 1957 a party visited the Salmon Glacier in British Columbia. A meteorological station was established in the accumulation area at an altitude of 1700 m. From 12 June to 16 August pressure, temperature and humidity were recorded continuously and the daily totals of precipitation, ablation and percolation were obtained. Periodic measurements of snow density were made; on the first occasion to a depth of 4.7 m. and later near the surface only. Occasional observations of snow temperatures to a depth of 12 m. were also made. Towards the end of the season the heat balance of the snow surface was examined in detail. The various contributions to the melting are evaluated for several short periods and their relative magnitudes compared.

scholarly journals The Summer Climate in the Accumulation Area of the Salmon Glacier

1958 ◽  
Vol 3 (23) ◽  
pp. 194-206
Author(s):  
C. J. Adkins
Keyword(s):  
British Columbia ◽  
Heat Balance ◽  
Meteorological Station ◽  
Snow Surface ◽  
Snow Density ◽  
Summer Climate ◽  
Temperature And Humidity ◽  
The Heat Balance

AbstractDuring the summer of 1957 a party visited the Salmon Glacier in British Columbia. A meteorological station was established in the accumulation area at an altitude of 1700 m. From 12 June to 16 August pressure, temperature and humidity were recorded continuously and the daily totals of precipitation, ablation and percolation were obtained. Periodic measurements of snow density were made; on the first occasion to a depth of 4.7 m. and later near the surface only. Occasional observations of snow temperatures to a depth of 12 m. were also made. Towards the end of the season the heat balance of the snow surface was examined in detail. The various contributions to the melting are evaluated for several short periods and their relative magnitudes compared.

scholarly journals The Midsummer Heat Balance of an Alaskan Maritime Glacier

1968 ◽  
Vol 7 (51) ◽  
pp. 431-440 ◽  
Author(s):  
N. A. Streten ◽  
G. Wendler
Keyword(s):  
Latent Heat ◽  
Heat Balance ◽  
High Rate ◽  
Ice Melting ◽  
Mountain Glacier ◽  
Temperature And Humidity ◽  
The Heat Balance

AbstractThe heat balance of an Alaskan mountain glacier located close to the sea is calculated for a period of 16 d in midsummer—a period which is typical of the summer in this region in its high cloudiness and in its temperature and humidity conditions. The radiative and the combined sensible and latent heat components are found to contribute equally to the observed high rate of ice melting.

scholarly journals The Midsummer Heat Balance of an Alaskan Maritime Glacier

1968 ◽  
Vol 7 (51) ◽  
pp. 431-440 ◽  
Author(s):  
N. A. Streten ◽  
G. Wendler
Keyword(s):  
Latent Heat ◽  
Heat Balance ◽  
High Rate ◽  
Ice Melting ◽  
Mountain Glacier ◽  
Temperature And Humidity ◽  
The Heat Balance

Abstract The heat balance of an Alaskan mountain glacier located close to the sea is calculated for a period of 16 d in midsummer—a period which is typical of the summer in this region in its high cloudiness and in its temperature and humidity conditions. The radiative and the combined sensible and latent heat components are found to contribute equally to the observed high rate of ice melting.

scholarly journals Heat Balance at the Snow Surface in a Katabatic Wind Zone, East Antarctica

1985 ◽  
Vol 6 ◽  
pp. 174-177 ◽  
Author(s):  
Tetsuo Ohata ◽  
Nobuyoshi Ishikawa ◽  
Shun’ichi Kobayashi ◽  
Sadao Kawaguchi
Keyword(s):  
Water Vapor ◽  
Balance Equation ◽  
Heat Balance ◽  
Cloud Amount ◽  
Temperature Inversion ◽  
East Antarctica ◽  
Katabatic Wind ◽  
Snow Surface ◽  
Net Radiation ◽  
The Heat Balance

Each component of the heat balance equation was obtained independently for 24 days in winter and 8 days in summer in 1980 at Mizuho station, East Antarctica. In winter, net radiation QNR was -37.6W/m-2 , QS; +36.7W/m-2 and QC; +2.5W/m2 QL was three orders less than QS. In the summer, QNR; +l9.9W/m-2 QC;-7.4W/m’, QL ; -.SW/m-2 and Q C; .2W/m-2. In the winter cloud amount was an important factor determining the variation in heat balance components, but also variation in the strength of the katabatic wind had effect. Condensation of water vapor occurred in winter and sublimation in summer: summer sublimation had a significant effect on the heat balance. The small condensation may be due to the structure of the temperature inversion at Mizuho which is related to the katabatic wind. The present results show that at Mizuho, the radiation loss Q NR and Q S which compensate it is larger than at any other site on the continent excluding the coastal stations.

scholarly journals The Heat and Mass Balance of Snow Dunes on the Central Antarctic Plateau

1969 ◽  
Vol 8 (53) ◽  
pp. 277-284 ◽  
Author(s):  
G. Weller
Keyword(s):  
Mass Loss ◽  
Mass Balance ◽  
Heat Balance ◽  
Snow Surface ◽  
Accumulation Pattern ◽  
Antarctic Plateau ◽  
The Antarctic ◽  
The Heat Balance

The heat-balance components of the faces of snow blocks were measured at “Plateau” station on the Antarctic plateau using micro-meteorological instrumentation. Heat-balance considerations and sublimation observations indicate considerable mass loss from the sloping snow surfaces during summer but little loss from horizontal surfaces. This process tends to level the irregularities of the snow surface. The conclusions are applicable to the snow dunes forming the general accumulation pattern on the Antarctic plateau.

scholarly journals Numerical modelling of sublimation on snow and comparison with field measurements

2001 ◽  
Vol 32 ◽  
pp. 27-32 ◽  
Author(s):  
Akihiro Hachikubo
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Heat Balance ◽  
Field Measurements ◽  
Mountainous Area ◽  
Snow Surface ◽  
Sublimation Rate ◽  
Wind Speeds ◽  
Snow Model ◽  
The Heat Balance

AbstractVarious field observations of surface-hoar formation were carried out with measurements of vapor sublimation rate and meteorological conditions from 1994 to 1996 in a mountainous area of northern Hokkaido,Japan. The sublimation rate seemed to increase with wind speed when the relative humidity was high, whereas the sublimation rate changed from positive to negative as the wind speed increased when the relative humidity was low (60–70%RH). These results were explained with a numerical model (called the Simple model) for the heat balance at the snow surface; the results of the model showed that there is a specific wind speed which maximizes the sublimation rate when the relative humidity is low, and indicated that the sublimation rate becomes large under humid conditions (>90%RH) and if wind speeds are increasing in the range 0.5–3.5 m s–1. The heat balance at the snow surface reproduced by another snow model, Crocus, agreed well with the observation results. However, Crocus overestimated the sublimation rate by about 1.3 × 10–6 kg m–2 s–1 when surface hoar formed, and underestimated snow surface temperature by several degrees.

scholarly journals Heat Balance at the Snow Surface in a Katabatic Wind Zone, East Antarctica

1985 ◽  
Vol 6 ◽  
pp. 174-177 ◽  
Author(s):  
Tetsuo Ohata ◽  
Nobuyoshi Ishikawa ◽  
Shun’ichi Kobayashi ◽  
Sadao Kawaguchi
Keyword(s):  
Water Vapor ◽  
Balance Equation ◽  
Heat Balance ◽  
Cloud Amount ◽  
Temperature Inversion ◽  
East Antarctica ◽  
Katabatic Wind ◽  
Snow Surface ◽  
Net Radiation ◽  
The Heat Balance

Each component of the heat balance equation was obtained independently for 24 days in winter and 8 days in summer in 1980 at Mizuho station, East Antarctica. In winter, net radiation QNR was -37.6W/m-2 , QS; +36.7W/m-2 and QC; +2.5W/m2 QL was three orders less than QS. In the summer, QNR; +l9.9W/m-2 QC;-7.4W/m’, QL ; -.SW/m-2 and Q C; .2W/m-2. In the winter cloud amount was an important factor determining the variation in heat balance components, but also variation in the strength of the katabatic wind had effect. Condensation of water vapor occurred in winter and sublimation in summer: summer sublimation had a significant effect on the heat balance. The small condensation may be due to the structure of the temperature inversion at Mizuho which is related to the katabatic wind. The present results show that at Mizuho, the radiation loss Q NR and Q S which compensate it is larger than at any other site on the continent excluding the coastal stations.

scholarly journals The Heat and Mass Balance of Snow Dunes on the Central Antarctic Plateau

1969 ◽  
Vol 8 (53) ◽  
pp. 277-284 ◽  
Author(s):  
G. Weller
Keyword(s):  
Mass Loss ◽  
Mass Balance ◽  
Heat Balance ◽  
Snow Surface ◽  
Accumulation Pattern ◽  
Antarctic Plateau ◽  
The Antarctic ◽  
The Heat Balance

The heat-balance components of the faces of snow blocks were measured at “Plateau” station on the Antarctic plateau using micro-meteorological instrumentation. Heat-balance considerations and sublimation observations indicate considerable mass loss from the sloping snow surfaces during summer but little loss from horizontal surfaces. This process tends to level the irregularities of the snow surface. The conclusions are applicable to the snow dunes forming the general accumulation pattern on the Antarctic plateau.

Analysis of electro- and thermophysical processes occurring during electrocontact baking of flour products.

2020 ◽  
Vol 29 (11) ◽  
pp. 50-55
Author(s):  
V.I. Maklyukov ◽  
◽  
E.O. Gerasimova ◽  
N. V. Labutina ◽  
E.N. Rogozkin ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Theoretical Calculation ◽  
Heat Balance ◽  
Electric Contact ◽  
Wheat Dough ◽  
Baking Process ◽  
Free Moisture ◽  
Contact Heating ◽  
The Heat Balance

The article considers the results of research conducted during electric contact heating of rye-wheat dough pieces. It is established that the electrical conductivity of the crumb dough does not depend on the total humidity of the material, but mainly on the amount of free moisture. Using the current and temperature graphs, you can imagine how free moisture changes during the baking process and the influence of the thermophysical and colloidal process on the change in the value of free moisture. Experimentally determined the amount of heat that is spent on baking 1 kg of bread. The accuracy of the theoretical calculation of this parameter in the heat balance of the baking chamber is confirmed.

Refined thermal calculation of the locomotive heat engine collector

2020 ◽  
pp. 56-58
Author(s):  
P.V. Gubarev ◽  
D.V. Glazunov ◽  
V.G. Ruban ◽  
A.S. Shapshal
Keyword(s):  
Experimental Data ◽  
Electric Motor ◽  
Heat Balance ◽  
Thermal Imaging ◽  
Heat Engine ◽  
Thermal Calculation ◽  
Calculation Results ◽  
Cooling Air ◽  
The Heat Balance ◽  
Traction Electric Motor

The thermal calculation of the locomotive traction engine collector is proposed. The equations of the heat balance of its elements are obtained taking into account the cooling air. The calculation results and experimental data of thermal imaging control are presented. Keywords: traction electric motor, collector, thermal calculation, thermal imaging control. [email protected]

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