Kommentit (2)

Petri Riikonen
Seuraa 
Viestejä245
Liittynyt16.3.2005

Hyvä kysymys. Ainakin tutkijat itse vaikuttavat olevan sitä mieltä, ettei se ole ongelma. He perustelevat asiaa sillä, että vertailtavana oli varsinaisten värisävyjen sijasta kunkin maalauksen puna-vihersuhde. Ja että myös vertailtujen maalausten suuri määrä lieventää värien erilaisten taulukohtaisten vaihtelujen vaikutusta tuloksiin. Julkaisussaan sivuilla 2989-2990 he kirjoittavat näin:

"When trying to estimate a number that would describe the
true colour at given solar zenith angle during a sunset, there
are several factors that are important sources of uncertainty.
Among them are the coatings, the degradation of colour due

to ageing, the unknown systematic practices used by the
painters, the mood of the painter and the different styles of
schools. However, we have to keep in mind that the earlier
and present findings, of a relation between high aerosol con-
tent at sunsets, were not based on true colours but confined
only to the case of the R / G ratios. The different factors af-
fecting the true colours mentioned above, being either ran-
dom or systematic, may also affect the R / G ratios. Although
this may be true for an individual painting, the statistics pre-
sented here show that when a large number of paintings by
different painters are considered, these uncertainties could
be much reduced."

http://www.atmos-chem-phys.net/14/2987/2014/acp-14-2987-2014.pdf

 

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