Constants for Empirical Expressions for Downcoming Atmospheric Radiation Under Cloudless Sky

Goss, John; Brooks, F. A.

doi:10.1175/1520-0469(1956)013<0482:cfeefd>2.0.co;2

Cited by 32 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The correlation coefficient is 0.58. Other investigators [listed by Goss and Brooks, 1956], have suggested different values for the constants in Brunt's empirical equa tion, but none were found to give calculated result* as close to the observed as these.…”

Section: Radiosity Variation Of Clear Sky-as Summarizedmentioning

confidence: 86%

Sky temperatures in the Imperial Valley of California

1957

View full text Add to dashboard Cite

The cloudless sky in the Imperial Valley is shown to have possibilities as a heat sink for cooling livestock and structures. Measurements with a directional radiometer and other instruments indicated that a point in the north sky 60° above the horizon is usually as cool as, or cooler than, other parts of the sky. North sky temperatures averaged 20° to 30° lower than air temperatures near the ground. The correlation of observed sky temperatures with sky temperatures calculated by Brunt's empirical equation from ground observations was 0.58, highly significant.

show abstract

Section: Radiosity Variation Of Clear Sky-as Summarizedmentioning

confidence: 86%

Sky temperatures in the Imperial Valley of California

1957

View full text Add to dashboard Cite

show abstract

“…The constant, b,, now used is-0.044, which is the average of the value obtained by Goss and Brooks (1956) Daily soil heat flux, G, is estimated with a simple empirical equation using the difference between mean daily air temperature and the average temperature for the three previous days. This component is currently being revised.…”

Section: B Operatinig Costsmentioning

confidence: 99%

Programming Irrigation for Greater Efficiency

Jensen

1972

Optimizing the Soil Physical Environment Toward Greater Crop Yields

View full text Add to dashboard Cite

“…Ke =Keo Ka +K, [9 ] where IC, = the mean crop coefficient based on experimental data where soil moisture was not limiting and normal irrigation stands were used; Ka the relative coeff icient related to available soil moisture. In this program, K a was assumed to be proportional to the logarithm of the percentage of remaining available soil moisture (AM): Ka --in (AM ± 1)/In 101; K, is the increase in the coefficient when the soil surface is wetted by irrigation or rainfall.…”

Section: Evapotranspirationmentioning

confidence: 99%

Estimating Soil Moisture Depletion from Climate, Crop and Soil Data

Jensen¹,

Wright²,

Pratt³

1971

Transactions of the ASAE

155

View full text Add to dashboard Cite

TREMENDOUS international scien-1 tific effort has been expended on evaporation and transpiration problems during the past decade as evidenced by hundreds of technical publications, and numerous conferences. 'However, use of this scientific achievement by agriculturalists, project planners and operators of irrigation farms has lagged behind technological advancements. The lag in adaptation of new technology by the user can be partly attributed to a lack of time, technical training and experience in meteorology, physics and agronomy. One of the greatest potential applications of evapotranspiration technology is in the management of irrigation farms. Recent studies in the Western States indicate that the timing of irrigations and the amount of water applied have changed very little during the past 25 years. Irrigation scheduling is a decision-making process repeated many times each year, involving when to irrigate and how much water to apply. Both criteria affect the quantity and quality of the crop. Decisions delayed a week, or even a few days, may be costly. Measurements are required to determine when the soil moisture reservoir is full, half-full, or nearly empty. Furthermore, the depletion of soil moisture is complicated because it is determined by meteorological conditions, the growing crop and the unsaturated hydraulic characteristics of the soil. Instruments are available to help determine the soil moisture status, such as tensiometers, soil moisture blocks and the more complicated neutron meter, but these are not used extensively. For these and other reasons, the modern farm manager is generally willing to hire a service that will provide the necessary data and guidelines to assist him in making better and inure profitable decisions. To satisfy such requirements, we developed user-oriented methodology to enable districts, service companies, or mutuals to routinely provide additional information to the irrigation farm man-Paper No. 69-041 was presented et the 1S'inter Meeting of the American Society of Agricultural Engineers at Chicago, 111., Detenibr 1969, on a program arranged by the Structures and Environment Division.

show abstract

Constants for Empirical Expressions for Downcoming Atmospheric Radiation Under Cloudless Sky

Cited by 32 publications

References 0 publications

Sky temperatures in the Imperial Valley of California

Sky temperatures in the Imperial Valley of California

Programming Irrigation for Greater Efficiency

Estimating Soil Moisture Depletion from Climate, Crop and Soil Data

Contact Info

Product

Resources

About