Hi Anna, Thanks for your help. At first I thought it was from Liang's paper. However, after comparing the equations/parameters, it seems only the one for ASTER was adopted from this paper. The others (i.e. LANDSAT, MODIS, AVHRR ) are from other sources, but not mentioned in the manual.
Could anybody give some help finding the sources please? Thank you. Best, Jiao On Thu, Dec 26, 2013 at 6:04 PM, Anna Petrášová <[email protected]>wrote: > Hi, > > according to > > http://trac.osgeo.org/grass/browser/grass/trunk/imagery/i.albedo/bb_alb_aster.c > > it's this one: > http://terpconnect.umd.edu/~sliang/papers/RSE.N2B.1.pdf > > I wonder if there is any reason it's not in the manual page. > > Anna > > > On Thu, Dec 26, 2013 at 10:21 PM, Jiao Wang <[email protected]> wrote: > >> Hi >> >> I was wondering if anybody could help me find the reference paper used in >> the equation for MODIS albedo (see below), not necessary the full paper, >> even the title would help. >> Thanks in advance. >> >> Best, >> Jiao >> >> >> https://svn.osgeo.org/grass/grass/trunk/imagery/i.albedo/bb_alb_modis.c >> /* >> >> * Broadband albedo MODIS >> */ >> double bb_alb_modis(double redchan, double nirchan, double chan3, >> double chan4, double chan5, double chan6, double chan7) >> { >> double result; >> >> result = >> (0.22831 * redchan + 0.15982 * nirchan + >> 0.09132 * (chan3 + chan4 + chan5) + 0.10959 * chan6 + >> 0.22831 * chan7); >> return result; >> } >> >> >> _______________________________________________ >> grass-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-user >> > >
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