scholarly journals Transmission and division of total optical depth method: A universal calibration method for Sun photometric measurements

2016 ◽  
Vol 43 (6) ◽  
pp. 2974-2980 ◽  
Author(s):  
Ming Zhang ◽  
Wei Gong ◽  
Yingying Ma ◽  
Lunche Wang ◽  
Zhongyong Chen
Keyword(s):  
Optical Depth ◽  
Calibration Method ◽  
Photometric Measurements ◽  
Universal Calibration

A Universal Calibration Method for Electronic Nose Based on Projection on to Convex Sets

2021 ◽  
pp. 1-1
Author(s):  
Shuya Zhang ◽  
Fengchun Tian ◽  
James A. Covington ◽  
Hantao Li ◽  
Leilei Zhao ◽  
...  
Keyword(s):  
Electronic Nose ◽  
Convex Sets ◽  
Calibration Method ◽  
Universal Calibration

scholarly journals Climatological Aspects of Aerosol Physical Characteristics in Tunisia Deduced from Sun Photometric Measurements

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Mabrouk Chaâbane ◽  
Chafai Azri ◽  
Khaled Medhioub
Keyword(s):  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Climatic Data ◽  
Weather Patterns ◽  
Annual Variations ◽  
Microphysical Properties ◽  
Atmospheric Turbidity ◽  
Long Time ◽  
Photometric Measurements ◽  
Aerosol Emissions

Atmospheric and climatic data measured at Thala site (Tunisia) for a long-time period (1977–2001) are used to analyse the monthly, seasonal, and annual variations of the aerosol optical depth at 1 μm wavelength. We have shown that aerosol and microphysical properties and the dominating aerosol types depend on seasons. A comparison of the seasonal cycle of aerosol optical characteristics at Thala site showed that the contribution of long-range transported particles is expected to be larger in summer as a consequence of the weather stability typical of this season. Also, the winter decrease in atmospheric turbidity may result from increases in relative humidity and decreases in temperature, leading to increased particle size and mass and increased fall and deposition velocities. The spring and autumn weather patterns usually carry fine dust and sand particles for the desert area to Thala region. The annual behaviour of the aerosol optical depth recorded a period of stead increase started in 1986 until 2001. Trends in atmospheric turbidity after 1988 could be explained other ways by the contribution of the eruption of Mount Pinatubo in 1991 and by local or regional changes in climate or in aerosol emissions.

scholarly journals Aerosol optical depth measurements in eastern China and a new calibration method

2010 ◽  
Vol 115 ◽  
Author(s):  
Kwon H. Lee ◽  
Zhanqing Li ◽  
M. C. Cribb ◽  
Jianjun Liu ◽  
Lei Wang ◽  
...  
Keyword(s):  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Eastern China ◽  
Calibration Method

Probable Structure and Nature of the Formations on the Reverse Side of the Moon According to Photometric Measurements of Lunar Photographs

1962 ◽  
Vol 14 ◽  
pp. 39-44
Author(s):  
A. V. Markov
Keyword(s):  
The Moon ◽  
Probable Structure ◽  
The Earth ◽  
Interplanetary Station ◽  
Photometric Measurements ◽  
Automatic Interplanetary Station

Notwithstanding the fact that a number of defects and distortions, introduced in transmission of the images of the latter to the Earth, mar the negatives of the reverse side of the Moon, indirectly obtained on 7 October 1959 by the automatic interplanetary station (AIS), it was possible to use the photometric measurements of the secondary (terrestrial) positives of the reverse side of the Moon in the experiment of the first comparison of the characteristics of the surfaces of the visible and invisible hemispheres of the Moon.

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