The radiative impact of aerosols emanating from biomass burning, through the Minnaert constant

Karathanassi, V; Andronis, V; Rokos, D

dc.contributor.author	Karathanassi, V	en
dc.contributor.author	Andronis, V	en
dc.contributor.author	Rokos, D	en
dc.date.accessioned	2014-03-01T01:19:38Z
dc.date.available	2014-03-01T01:19:38Z
dc.date.issued	2003	en
dc.identifier.issn	01431161	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15622
dc.subject	Biomass Burning	en
dc.subject.other	Aerosols	en
dc.subject.other	Anisotropy	en
dc.subject.other	Biomass	en
dc.subject.other	Combustion	en
dc.subject.other	Fires	en
dc.subject.other	Forestry	en
dc.subject.other	Particulate emissions	en
dc.subject.other	Radiation	en
dc.subject.other	Smoke	en
dc.subject.other	Troposphere	en
dc.subject.other	Atmospheric diffusion	en
dc.subject.other	Remote sensing	en
dc.subject.other	aerosol	en
dc.subject.other	forest fire	en
dc.subject.other	image classification	en
dc.subject.other	Landsat thematic mapper	en
dc.subject.other	radiative forcing	en
dc.subject.other	remote sensing	en
dc.subject.other	scattering	en
dc.subject.other	SPOT	en
dc.title	The radiative impact of aerosols emanating from biomass burning, through the Minnaert constant	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/0143116031000080750	en
heal.identifier.secondary	http://dx.doi.org/10.1080/0143116031000080750	en
heal.publicationDate	2003	en
heal.abstract	Forest fires release gases, ashes and particulate matter into the atmosphere, affecting the atmospheric radiation budget. The increment of aerosols by particles emanating from biomass burning affects solar radiation, mainly in the troposphere, by multiple scattering and interactions between molecule and aerosol scattering for several days after the fire. Among the topographic normalization methods, the Minnaert method assumes the anisotropic reflectance of surfaces by introducing the Minnaert constant, the value of which is affected by the atmospheric diffusion of light. In this paper, a methodology is developed in order to study atmospheric effects on this value. This is based on the optimum value of the Minnaert constant, which is the value that leads to the higher classification accuracy. The methodology has been tested on four Landsat TM and three SPOT XS images respectively. The optimum Minnaert value presented a high decrement (0.1-0.2 instead of 0.8-0.9) for two images. Both of them had been captured shortly after fires, without being visibly affected by smoke and atmospheric perturbation effects. The proposed methodology has successfully revealed fires through the Minnaert constant. This methodology has also revealed the quality of the image. Sahara dust events are also to be investigated through the Minnaert constant.	en
heal.journalName	International Journal of Remote Sensing	en
dc.identifier.doi	10.1080/0143116031000080750	en
dc.identifier.volume	24	en
dc.identifier.issue	24	en
dc.identifier.spage	5135	en
dc.identifier.epage	5145	en