5.3.4 Sequential Steps of the Exercise Implementation
1. To study the theory using additional books, pointed in references list.
2. To use the prepared file “aer.dat” containing temperature and pressure profile as
initial It is possible to create files containing data of aerological sounding with
the program “V_AERDAT.exe”. The file is automatically kept in the directory
« \dz-2006\student\ » with name “aer.dat”.
5. To create the file containing values of the transmission function with computer
program “V_TRANSM.exe” with name “Vtransm.dat” in the same directory as
the computer program is. The transmission functions in five spectral channels at
100 levels in the atmosphere (z ¼ 0 Ä 50 km) are simulated basing on the
following equation (an analogue of formulas (5.3)):
P n i ; z ¼ 5 0 km; z j
À
Á ¼ exp Àk n i
ð Þ uðz j Þ
Â
Ã
;
(5.6)
where z j ¼ (n À j )/2, j ¼ 1,. . .,101, n ¼ 101; k(n i ) ¼ 0.005 + (i + 0.05)
0.8
,
i ¼ 1, . . . , 5;
u(z j ) ¼ (j/2À1)
(0.8À0.001 * n) .
4. To try calculations with the computer program “RAD_IR” for visualizing all
variants for analyzing special features of forming self heat radiation of the
system surface-atmosphere in clear and cloudy cases, and different altitudes of
cloud top.
5. To prepare the plan of accomplishing numerical experiments with program
“RAD_IR.exe”.
6. To fulfill whole set of calculations with the program “RAD_IR.exe”.
7. To analyze basing on data obtained:
– the redistribution of the surface and atmosphere contribution at different
spectral channels with different radiation absorption in case of clear
atmosphere;
– the dependence of outgoing radiation at different spectral channels with
different radiation absorption on the surface emissivity and surface radiation
heating (cooling);
– the cloud impact (altitude and emissivity of cloud top, part of cloud cover of
the instrument viewing field) on the outgoing radiation within spectral
channels with different radiation absorption.
5.3.5 Requirements to the Report
Prepare the final brief report with elements of theory, resulting pictures, and
conclusions that reflect main stages of the work.
5.3 Practice 4
51
1. To study the theory using additional books, pointed in references list.
2. To use the prepared file “aer.dat” containing temperature and pressure profile as
initial It is possible to create files containing data of aerological sounding with
the program “V_AERDAT.exe”. The file is automatically kept in the directory
« \dz-2006\student\ » with name “aer.dat”.
5. To create the file containing values of the transmission function with computer
program “V_TRANSM.exe” with name “Vtransm.dat” in the same directory as
the computer program is. The transmission functions in five spectral channels at
100 levels in the atmosphere (z ¼ 0 Ä 50 km) are simulated basing on the
following equation (an analogue of formulas (5.3)):
P n i ; z ¼ 5 0 km; z j
À
Á ¼ exp Àk n i
ð Þ uðz j Þ
Â
Ã
;
(5.6)
where z j ¼ (n À j )/2, j ¼ 1,. . .,101, n ¼ 101; k(n i ) ¼ 0.005 + (i + 0.05)
0.8
,
i ¼ 1, . . . , 5;
u(z j ) ¼ (j/2À1)
(0.8À0.001 * n) .
4. To try calculations with the computer program “RAD_IR” for visualizing all
variants for analyzing special features of forming self heat radiation of the
system surface-atmosphere in clear and cloudy cases, and different altitudes of
cloud top.
5. To prepare the plan of accomplishing numerical experiments with program
“RAD_IR.exe”.
6. To fulfill whole set of calculations with the program “RAD_IR.exe”.
7. To analyze basing on data obtained:
– the redistribution of the surface and atmosphere contribution at different
spectral channels with different radiation absorption in case of clear
atmosphere;
– the dependence of outgoing radiation at different spectral channels with
different radiation absorption on the surface emissivity and surface radiation
heating (cooling);
– the cloud impact (altitude and emissivity of cloud top, part of cloud cover of
the instrument viewing field) on the outgoing radiation within spectral
channels with different radiation absorption.
5.3.5 Requirements to the Report
Prepare the final brief report with elements of theory, resulting pictures, and
conclusions that reflect main stages of the work.
5.3 Practice 4
51