Spectral irradiance at Lammi Biological Station Research Forest 2015: for assessing scale-wise similarity of curves with a thick pen

dc.contributor.affiliationUniversity of Helsinki - Hartikainen, Saara M.
dc.contributor.affiliationHanken School of Economics - Jach, Agnieszka
dc.contributor.affiliationUniversidad Carlos III de Madrid - Grané, Aurea
dc.contributor.affiliationUniversity of Helsinki - Robson, T. Matthew
dc.contributor.authorHartikainen, Saara M.
dc.contributor.authorJach, Agnieszka
dc.contributor.authorGrané, Aurea
dc.contributor.authorRobson, T. Matthew
dc.date.accessioned2025-03-24T15:15:05Z
dc.date.issued2018-05-15
dc.date.issued2018-05-15
dc.descriptionThis dataset contains records of the solar spectral energy irradiance (W m-2 nm-1) in the understorey of forest stands at Lammi Biological Station, southern Finland (61◦ 3.24’ N, 25◦ 118 2.23’ E) during the spring of 2015.  These spectra allow the change in spectral energy irradiance to be followed through the period of canopy leaf flush. Records are the average of recorded spectra from four points recorded at 40-cm above the forest floor using a Maya 2000 Pro array spectrometer. Spectra were recorded from exactly the same location on three dates, 2015-04-25, 2015-05-22, and 2015-06-05, before, during and after leaf flush. Data were recorded from the understorey of a young Betula stand, an old Betula stand, an old mixed Betula stand, a Quercus stand, and a Picea stand, in three positions: shade, semi-shade from leaves, and full sun in a sunfleck. On each occasion control measurements of spectral energy irradiance in full sun of an open field were also recorded at the beginning, middle and end of each measurement period. All measurements were made during the 2 hours either side of solar noon, on clear-sky days.  Details of the sampling method and interpretation are given in the paper, Hartikainen et al., (2018) in Ecology and Evolution, which showcases the use of Thick Pen Transform to compare spectra.
dc.identifierhttps://doi.org/10.5281/zenodo.1246597
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/9526
dc.rightsOpen
dc.rights.licensecc-by-4.0
dc.subjectcanopy
dc.subjectcross-dependence
dc.subjectmulti-scale
dc.subjectphenology
dc.subjectspectral irradiance
dc.subjectspectrometer
dc.subjectsunfleck
dc.subjectthick pen measure of association
dc.subjectthick pen transform
dc.subjectunderstorey
dc.titleSpectral irradiance at Lammi Biological Station Research Forest 2015: for assessing scale-wise similarity of curves with a thick pen
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dc.typedataset
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