scholarly journals Plumas de polvo en la Patagonia Argentina, marzo de 2009 Dust over the Patagonia Argentina, March 2009

Anales AFA ◽  
2010 ◽  
pp. 272-275
Author(s):  
L. Otero ◽  
P. Ristori ◽  
R. D’Elia ◽  
A. Rosales ◽  
E. Quel
Keyword(s):  
Optical Thickness ◽  
Satellite Images ◽  
Visible Region ◽  
Aerosol Optical Thickness ◽  
Global Network ◽  
Electromagnetic Spectrum ◽  
Microphysical Properties ◽  
Dust Clouds ◽  
Aqua Satellite ◽  
Aerosol Characterization

This work studies the dust clouds microphysical properties from the Pampa and the Patagonia region. This kind of events occurred regularly during the dry season of 2008. It analyzes in particular the episode that occurred on March 28th, 2009 by means of a sunphotometer from the AERONET global network administrated by NASA, and radiometer both located at the “Laboratorio de Física de la Atmósfera, Facultad de Ingeniería, Universidad Nacional de la Patagonia” (43,2° S, 65,3° O, 15,0 m), at Trelew, in Chubut. The geographical extent of this event was evidenced by the AQUA satellite images. An aerosol characterization shows a SSA of 0.9 and an aerosol optical thickness of 0.8 measured at 440 nm. This means an effective direct sun radiation blocking factor of 50% in the visible region of the electromagnetic spectrum.

Analysis of shipboard aerosol optical thickness measurements from multiple sunphotometers aboard the R/V Ronald H Brown during the Aerosol Characterization Experiment—Asia

2005 ◽  
Vol 44 (18) ◽  
pp. 3805 ◽  
Author(s):  
Mark A. Miller ◽  
Kirk Knobelspiesse ◽  
Robert Frouin ◽  
Mary Jane Bartholomew ◽  
R. Michael Reynolds ◽  
...  
Keyword(s):  
Optical Thickness ◽  
Aerosol Optical Thickness ◽  
Thickness Measurements ◽  
Aerosol Characterization

A new method to retrieve aerosol optical thickness from satellite images on a parallel system

Particuology ◽  
2009 ◽  
Vol 7 (5) ◽  
pp. 392-398 ◽  
Author(s):  
Jianping Guo ◽  
Huadong Xiao ◽  
Yong Xue ◽  
Huizheng Che ◽  
Xiaoye Zhang ◽  
...  
Keyword(s):  
Optical Thickness ◽  
Satellite Images ◽  
Parallel System ◽  
Aerosol Optical Thickness ◽  
New Method

A New Algorithm for Retrieving Aerosol Optical Thickness Using TERRA/MODIS Satellite Images

Annals of GIS ◽  
2008 ◽  
Vol 14 (2) ◽  
pp. 86-91 ◽  
Author(s):  
Man Sing Wong ◽  
Janet Nichol ◽  
Kwon Ho Lee ◽  
Zhanqing Li
Keyword(s):  
Optical Thickness ◽  
Satellite Images ◽  
Aerosol Optical Thickness ◽  
Terra Modis ◽  
Modis Satellite Images

scholarly journals Electronic, Structural, and Optical Structure of Mono-Doped and Co-Doped (210) TiO2 Brookite Surfaces for Application in Dye-Sensitized Solar Cells—A First Principles Study

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3918
Author(s):  
Ratshilumela S. Dima ◽  
Lutendo Phuthu ◽  
Nnditshedzeni E. Maluta ◽  
Joseph K. Kirui ◽  
Rapela R. Maphanga
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Electromagnetic Spectrum ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Co Doped ◽  
Optical Structure

Titanium dioxide (TiO2) polymorphs have recently gained a lot of attention in dye-sensitized solar cells (DSSCs). The brookite polymorph, among other TiO2 polymorphs, is now becoming the focus of research in DSSC applications, despite the difficulties in obtaining it as a pure phase experimentally. The current theoretical study used different nonmetals (C, S and N) and (C-S, C-N and S-N) as dopants and co-dopants, respectively, to investigate the effects of mono-doping and co-doping on the electronic, structural, and optical structure properties of (210) TiO2 brookite surfaces, which is the most exposed surface of brookite. The results show that due to the narrowing of the band gap and the presence of impurity levels in the band gap, all mono-doped and co-doped TiO2 brookite (210) surfaces exhibit some redshift. In particular, the C-doped, and C-N co-doped TiO2 brookite (210) surfaces exhibit better absorption in the visible region of the electromagnetic spectrum in comparison to the pure, S-doped, N-doped, C-S co-doped and N-S co-doped TiO2 brookite (210) surfaces.

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