where y i ¼ incidence angle, y r ¼ angle of refraction at the water-air interface. The
angles y i and y r are interrelated through Snell’s law:
sin y i
sin y r
¼ n;
(16.13)
where n is the relative index of refraction of water, equal to 1.333. The values of F
are tabulated in Table 16.4.
16.3 Practice 15
16.3.1 Objectives
1. Investigate the spectral composition of surface solar radiation diffuse reflectance
just beneath the water surface, RðÀ0; lÞ as a function of solar zenith angle.
2. Investigate the spectral variations of RðÀ0; lÞ with the concentration of water
colour producing agents (CPAs), such as phytoplankton chlorophyll, suspended
mineral and dissolved organic matter.
3. Investigate the spectral variations of RðÀ0; lÞ with bottom depth and albedo.
4. Gain practical experience in the use and modernization of the already available
software packages for conducting simulations at PCs.
5. Get acquainted with drawing up of the performed lab practice making use of the
“Word” text editor with the emphasis of attaining experience in inclusion of
tables, graphical and text files.
16.3.2 Software and Set of Input Parameters
1. “F_TASK” code in “Paskal v.7.0” (TP7), and files with the input data stored in
the folder “c:\Dis_liq”
2. Text editor WORD, packages EXCEL, SURFER and TABLECURVE.
3. Set of input parameters provided by the teacher.
16.3.3 Sequential Steps of the Exercise Implementation
1. Read attentively the section devoted to the physical/theoretical background of
this exercise. If necessary, consult the referenced literature.
2. Using the code “F_ TASK.exe” and the options suggested in Table 16.7, obtain
and further analyze the spectral dependence of R tot ðÀ0; lÞ upon:
166
16 Quantification and Analysis of the Spectral Composition
angles y i and y r are interrelated through Snell’s law:
sin y i
sin y r
¼ n;
(16.13)
where n is the relative index of refraction of water, equal to 1.333. The values of F
are tabulated in Table 16.4.
16.3 Practice 15
16.3.1 Objectives
1. Investigate the spectral composition of surface solar radiation diffuse reflectance
just beneath the water surface, RðÀ0; lÞ as a function of solar zenith angle.
2. Investigate the spectral variations of RðÀ0; lÞ with the concentration of water
colour producing agents (CPAs), such as phytoplankton chlorophyll, suspended
mineral and dissolved organic matter.
3. Investigate the spectral variations of RðÀ0; lÞ with bottom depth and albedo.
4. Gain practical experience in the use and modernization of the already available
software packages for conducting simulations at PCs.
5. Get acquainted with drawing up of the performed lab practice making use of the
“Word” text editor with the emphasis of attaining experience in inclusion of
tables, graphical and text files.
16.3.2 Software and Set of Input Parameters
1. “F_TASK” code in “Paskal v.7.0” (TP7), and files with the input data stored in
the folder “c:\Dis_liq”
2. Text editor WORD, packages EXCEL, SURFER and TABLECURVE.
3. Set of input parameters provided by the teacher.
16.3.3 Sequential Steps of the Exercise Implementation
1. Read attentively the section devoted to the physical/theoretical background of
this exercise. If necessary, consult the referenced literature.
2. Using the code “F_ TASK.exe” and the options suggested in Table 16.7, obtain
and further analyze the spectral dependence of R tot ðÀ0; lÞ upon:
166
16 Quantification and Analysis of the Spectral Composition