On the relationship between duration of sunshine and solar radiation on the earth’s surface: Ångström’s equation revisited

Suehrcke, H.

doi:10.1016/s0038-092x(00)00004-9

Cited by 88 publications

(33 citation statements)

References 21 publications

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“…We used the term "lesssunny" to denote years with an unusually (below 1 or 2 SD) low number of mean June-July sunshine hours. Because the solar radiation can be reduced not only by the cloud cover (Suehrcke, 2000;Arking et al, 1996), but also by other factors, such as volcano eruptions (Handler, 1989), forest fires (Chubarova et al, 2008) and other aerosols (Satheesh and Krishna Moorthy, 2005;Moosmüller et al, 2009), we decided that the term less-sunny is the most appropriate.…”

Section: Discussionmentioning

confidence: 99%

Long-term summer sunshine/moisture stress reconstruction from tree-ring widths from Bosnia and Herzegovina

Poljanšek

Ceglar²,

Levanič

2013

Clim. Past

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Abstract. We present the first summer sunshine reconstruction from tree-ring data for the western part of the Balkan Peninsula. Summer sunshine is tightly connected with moisture stress in trees, because the moisture stress and therefore the width of annual tree-rings is under the influence of the direct and interactive effects of sunshine duration (temperature, precipitation, cloud cover and evapotranspiration). The reconstruction is based on a calibrated z-scored mean chronology, calculated from tree-ring width measurements from 7 representative black pine (Pinus nigra Arnold) sites in Bosnia and Herzegovina (BiH). A combined regression and scaling approach was used for the reconstruction of the summer sunshine. We found a significant negative correlation (r = −0.54, p < 0.0001) with mean June-July sunshine hours from Osijek meteorological station (Croatia). The developed model was used for reconstruction of summer sunshine for the time period 1660-2010. We identified extreme summer events and compared them to available documentary historical sources of drought, volcanic eruptions and other reconstructions from the broader region. All extreme summers with low sunshine hours (1712, 1810, 1815, 1843, 1899 and 1966) are connected with volcanic eruptions.

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Section: Discussionmentioning

confidence: 99%

Long-term summer sunshine/moisture stress reconstruction from tree-ring widths from Bosnia and Herzegovina

Poljanšek

Ceglar²,

Levanič

2013

Clim. Past

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“…Therefore, the formulation originally proposed by Å ngstro¨m (1924) and later modified by Prescott (1940) can be used to estimate MMDGR when sunshine duration data are available. The historical evolution of this approach and its application in many parts of the world were reviewed by Matı´nez-Lozano et al (1984) and see also Suehrcke (2000). This modified Å ngstro¨m equation, referred to as the Å ngstro¨m-Prescott formula (Matı´nez-Lozano et al, 1984;Gueymard et al, 1995), is…”

Section: Global Radiation Methodsmentioning

confidence: 99%

Sunshine and global solar radiation estimation at different sites in Egypt

El‐Metwally

2005

Journal of Atmospheric and Solar-Terrestrial Physics

106

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“…Suehrcke [71] proposed an entirely new relation between relative sunshine duration and global radiation. This relation, unlikelyÅngströ m-Prescott equation, is nonlinear and it does not require any empirical constants.…”

Section: Present Trends In Correlationmentioning

confidence: 99%

Solar Radiation: Models and Measurement Techniques

Pandey

Katiyar

2013

Journal of Energy

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In order to grasp the significance of the work accomplished by the author, it is necessary to keep abreast of the present developments in this field. The research work reported in the paper is an attempt to get knowledge to assess the solar energy potential for practical and efficient utilization in India. Our work is centered on estimating realistic values of solar (global and diffuse) radiation on horizontal and tilted surfaces using measured meteorological data and geographical and geometrical parameters for India.

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On the relationship between duration of sunshine and solar radiation on the earth’s surface: Ångström’s equation revisited

Cited by 88 publications

References 21 publications

Long-term summer sunshine/moisture stress reconstruction from tree-ring widths from Bosnia and Herzegovina

Long-term summer sunshine/moisture stress reconstruction from tree-ring widths from Bosnia and Herzegovina

Sunshine and global solar radiation estimation at different sites in Egypt

Solar Radiation: Models and Measurement Techniques

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