About the equivalent radiative temperature for clear skies

Berger, X.; Buriot, D.; Garnier, F.

doi:10.1016/0038-092x(84)90247-0

Cited by 113 publications

(39 citation statements)

References 4 publications

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“…1992 data set for the lowland, 1993-1994 data set for the mountain site) Monteith (1961) Kew (UK) 0.53 0.065 Swinbank (1963) Australia 0.64 0.037 Sellers (1965) 22 locations World-wide 0.61 0.048 Berger et al (1984) France 0.66 0.040 Berdahl and Martin (1984) Six locations in U.S.A. 0.56 0.059 Heitor et al (1991) Lisbon ( Crawford and Duchon (1999) estimated daytime I↓ for the ARM site. In Fig.…”

Section: Clear-sky Condition: a New Parameterizationmentioning

confidence: 99%

“…Following his pioneering work, Brunt (1932), Swinbank (1963), Idso and Jackson (1969), Brutsaert (1975), Berger et al (1984), Culf and Nash (1993), Alados-Arboledas (1993) and Prata (1996), among others, postulated additional models for the estimation of I↓ for clear-sky conditions. Crawford and Duchon (1999) estimated e ective atmospheric emissivity for calculating daytime I↓ at Oklahoma.…”

Section: Introductionmentioning

confidence: 99%

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Downward atmospheric longwave irradiance under clear and cloudy skies: Measurement and parameterization

Iziomon

Mayer

Matzarakis

2003

Journal of Atmospheric and Solar-Terrestrial Physics

182

141

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Section: Clear-sky Condition: a New Parameterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Downward atmospheric longwave irradiance under clear and cloudy skies: Measurement and parameterization

Iziomon

Mayer

Matzarakis

2003

Journal of Atmospheric and Solar-Terrestrial Physics

182

141

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“…[22] It has often been found that observational data are consistent with the clear sky emissivity being linearly dependent on the ground-level dew point (T d ) [e.g., Berger et al, 1984]. We have derived such an expression from our overall data and find the clear sky emissivity at the zenith is given by:…”

Section: Effect Of Water Vapormentioning

confidence: 84%

Cloud base temperature measurements using a simple longwave infrared cloud detection system

et al. 2005

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[1] We have studied the 10 mm temperature of overcast skies, as measured from the ground, in a coastal region of South Australia. The long-term aim of this work is to be able to use measurements of the sky temperature, plus other readily measured ground-based parameters, to recognize the presence, or otherwise, of clouds. Comparisons have been made between the 10 mm sky temperature and cloud height in overcast conditions, measured both with a ceilometer and radiosondes. A low-altitude cloud exhibits a wide range of emissivities, such that clouds with base heights up to 1200 m have emissivities ranging from below 0.2 to close those expected for black bodies at those wavelengths. However, higher clouds exhibit different properties, as their temperatures approach those to be expected for a clear sky with water vapor.

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“…On the other hand, the sky temperature is higher than the ambient temperature by 8.5 • C in the case of a severe storm. However, the sky temperature usually does not pass the ambient temperature, as proposed in most sky temperature models in literature (Berger et al 1984;Berdahl and Fromberg 1982;Melchor 1982).…”

Section: Sky Temperature Modelsmentioning

confidence: 93%

Effect of clouds and dust storms on the sky radiation exchange for buildings located in hot–dry climates

Algarni

Nutter

2015

Science and Technology for the Built Environment

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This article evaluates the impact of effective sky temperatures on building radiation exchange under clear, cloudy, and dusty conditions for extremely hot and dry climates. In part, a dusty sky temperature model has been introduced as a function of atmospheric aerosol optical depth. The sky radiative exchange was evaluated using a one-dimensional transient heat transfer model with numerical calculations performed using the fully implicit finite-difference method. The newly available ASHRAE 2013 clear sky model was evaluated and implemented to calculate the hourly incident solar radiation for a horizontal roof under the extremely hot-dry climate conditions of Riyadh, Saudi Arabia. Results showed that in clear sky conditions, sky longwave radiation contributes to a reduction of the total heat gain. A daily mean clear sky cooling around 2645 and 2385 W-hr/m 2 was estimated for July and January, respectively. In contrast, cloud and dust covers increase effective sky temperature and diminish the role of sky radiative cooling. Depending on severity, the mean contributed sky cooling heat exchange was found to range between 436 and 1636 W-hr/m 2 for dust storm and scattered cloudy sky conditions, respectively. Similarly, the ASHRAE 2013 clear sky model and the sky temperature models were shown for four other extremely hot-dry global sites.

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About the equivalent radiative temperature for clear skies

Cited by 113 publications

References 4 publications

Downward atmospheric longwave irradiance under clear and cloudy skies: Measurement and parameterization

Downward atmospheric longwave irradiance under clear and cloudy skies: Measurement and parameterization

Cloud base temperature measurements using a simple longwave infrared cloud detection system

Effect of clouds and dust storms on the sky radiation exchange for buildings located in hot–dry climates

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