Geoscience Reference
In-Depth Information
Tab l e A . 4 .
Description of classes of the spectral brightness coefficients (SBC) of the water
surface
∗
(
continued on next page
)
Notation
N - number of spectra in the class (mean and root-mean-square values of SBC
are calculated over them).
H - altitude of the flight in meters, three values: minimum, arithmetic mean
and maximum over all spectra of the class.
Z - solar zenith angle in degrees, three values: minimum, arithmetic mean and
maximum over all spectra of the class.
C(cl) - total chlorophyll contents, attributed to the class (
µ
g/l) for the water
surface from the accompanied contact measurements
C(ms) - mineral matter contents, attributed to the class (
µ
g/l) for the water
surface, from the accompanied contact measurements
Class 1.0
Pure lakewater: central parts of the Ladoga andOnega Lakes, far fromthe coast
and rivermouths. C(cl)
=
µ
=
µ
=
=
0.5
g/l. C(ms)
0.5
g/l. N
930, H
(200/292/300),
=
Z
(37/44/64). Observation to nadir. Variation of weather conditions: clear sky,
transparent cloudiness, overcast sky.
Class 2.0
East part of the Ladoga Lake, central part of the Rybinsk reservoir during
the period before “water blossom”. C(cl)
=
µ
=
µ
=
1.5
g/l, C(ms)
1.5
g/l. N
55,
=
=
H
(300/300/300), Z
(35/39/51). Observation to nadir. Weather conditions:
clear sky.
Class 3.0
The Ladoga and Onega Lakes at the distance 10-15km from the coast, cen-
tral part of the Rybinsk reservoir. C(cl)
=
µ
=
µ
=
2.5
g/l, C(ms)
1.0
g/l, N
226,
=
=
H
(35/43/64). Observation to nadir. Variation of weather
conditions: clear sky, overcast sky.
(300/300/300), Z
Class 4.0
The Ladoga Lake: areas of theVolkhov and Svir riversmouths andPetrokrepost
bay, the Rybinsk and Tsimlyansky reservoirs C(cl)
=
=
=
2.5, C(ms)
3.0, N
182,
=
=
H
(35/40/63). Observation to nadir. Variation of weather
conditions: clear sky, overcast sky.
(200/299/300), Z
Class 5.0
The Ladoga Lake: areas of the Volkhov and Svir rivers mouths near the
coast, the Rybinsk reservoir. C(cl)
=
µ
=
µ
=
=
4.0
g/l, C(ms)
1.0
g/l, N
165, H
=
(300/300/300), Z
(35/40/63). Observation to nadir. Variation of weather con-
ditions: clear sky, overcast sky.
=
Class 6.0
The Ladoga Lake: areas near the Volkhov and Svir rivers mouths. C(cl)
µ
=
µ
=
=
=
5.0
g/l, C(ms)
3.0
g/l. N
66, H
(300/300/300), Z
(36/47/63). Observa-
tion to nadir. Weather conditions: clear sky.
Class 7.0
TheMingechaursky reservoir in the period of “water blossom”, the SivashGulf.
C(cl)
=
µ
=
µ
=
=
=
3.5
g/l, C(ms)
3.0
g/l. N
35, H
(300/357/500), Z
(40/53/63). Ob-
servation to nadir. Weather conditions: clear sky.
=
µ
Class 8.0
TheMingechaursky reservoir in the period of “water blossom”. C(cl)
4.0
g/l,
=
µ
=
=
=
C(ms)
4.0
g/l. N
43, H
(300/300/300), Z
(40/49/61). Observation to
nadir. Weather conditions: clear sky.
=
µ
Class 9.0
TheMingechaursky reservoir in the period of “water blossom”. C(cl)
5.0
g/l,
=
µ
=
=
=
C(ms)
6.0
g/l. N
43, H
(300/300/300), Z
(41/48/56). Observation to
nadir. Weather conditions: clear sky.
=
µ
Class 10.0
TheMingechaursky reservoir in the period of “water blossom”. C(cl)
9.0
g/l,
=
µ
=
=
=
C(ms)
14.0
g/l. N
22, H
(300/300/300), Z
(42/48/56). Observation to
nadir. Weather conditions: clear sky.
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