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- Publisher
- Wiley
- Copyright
- 2002 IAVS ‐ the International Association of Vegetation Science
- ISSN
- 1100-9233
- eISSN
- 1654-1103
- DOI
- 10.1111/j.1654-1103.2002.tb02087.x
- Publisher site
- See Article on Publisher Site
Abstract
Abstract. Estimation of potential annual direct incident radiation has traditionally required numerical integration with simulation models. As an alternative, we present convenient equations for use in spreadsheet, GIS, and database applications. Input variables are latitude, slope, and aspect. The equations apply to 0–60° north latitude, slopes from 0–90°, and all aspects. By transforming aspect, the equations can also be applied as an index of heat load, symmetrical about a northeast to southwest axis.
Journal
Journal of Vegetation Science – Wiley
Published: Aug 1, 2002