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Analysis of institutional authors

Almorox JCorresponding Author

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March 27, 2020
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Adjustment of the Angstrom-Prescott equation from Campbell-Stokes and Kipp-Zonen sunshine measures at different timescales in Spain

Publicated to: RENEWABLE ENERGY. 154 337-350 - 2020-07-01 154(), DOI: 10.1016/j.renene.2020.03.023

Authors:

Almorox, J; Arnaldo, JA; Bailek, N; Martí, P
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Affiliations

Univ Complutense Madrid - Author
Univ Ctr Tamanrasset, Fac Sci & Technol, Dept Matter Sci, Energies & Mat Res Lab - Author
Univ Illes Balears, Area Engn Agroforestal, Carretera Valldemossa Km 7-5, Palma De Mallorca 07122 - Author
Univ Politecn Madrid, UPM, Avd Puerta Hierro 2 - Author
Universidad Complutense de Madrid - Author
Universidad Politécnica de Madrid - Author
Universitat de les Illes Balears - Author
University Center of Tamanrasset - Author
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Abstract

© 2020 Elsevier Ltd The sunshine-based Ångström–Prescott model and the temperature-based is widely used in the scientific literature, and, in general, it is accepted that the sunshine-based methods are more accurate. Sunshine duration is registered in many climatological stations, and it is highly correlated with solar radiation. However, in many applications of the Ångström–Prescott equation, no attention is payed to the sensor used for recording sunshine duration. In Spain, the Campbell-Stokes sensors are being replaced by Kipp and Zonen sensors. This study assessed the Ångström–Prescott goodness-of-fit and adjusted coefficients for Campbell-Stokes and Kipp and Zonen daily records at 10 stations in Spain. The analysis considered three different temporary windows, namely global, seasonal and monthly scales based. The results show differences in the sunshine hours measured by the two instruments, mainly because the Campbell-Stokes recorder is prone to over-burning. The Kipp and Zonen sensors can be considered as suitable as the Campbell-Stokes sensor, and provides a significant reduction in the statistical errors. The results also highlight the importance calibrating the Ångström–Prescott equation using seasonal and monthly coefficients, instead of using a unique pair of values. Further, the equation performance shows a clear seasonal pattern, with a higher accuracy during the summer.
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Keywords

Angstrom-pre scott modelÅngström–prescott modelCampbell-stokesCloudinessDurationEmpirical coefficientsEmpirical-modelsGlobal solar-radiationIrradiationKipp and zonenRecorderSolar radiationSunshine durationSurfaceUnited-states

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal RENEWABLE ENERGY due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 16/114, thus managing to position itself as a Q1 (Primer Cuartil), in the category Energy & Fuels.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-25:

  • WoS: 23
  • Scopus: 25
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-25:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 37.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 37 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 10.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).
  • The number of mentions in news outlets: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/91719/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 58
  • Downloads: 2
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Algeria.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (ALMOROX ALONSO, JAVIER) .

the author responsible for correspondence tasks has been ALMOROX ALONSO, JAVIER.

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