Exercises

Exercise 1

Match each number in Fig. 15 with one of the features below.

1 2 3 4 5 6 7 8 9 10 11 12 13 14
Water cloud
Thick ice cloud
Cirrus
Snow
Sea
Ice
Desert
Vegetation

When you have selected the answers, press done and take a look at the correct answers.

NOTE: The cirrus cloud indicated by number 9 is highly polluted by dust.

  1 2 3 4 5 6 7 8 9 10 11 12 13 14
Water cloud + +
Thick ice cloud + +
Cirrus + + +
Snow + +
Sea + +
Ice +
Desert +
Vegetation +

Figure 15: AVHRR Natural Colour RGB image of the Caspian Sea region on 1 March 2014 at 06:43 UTC

Exercise 2

Match each feature in Fig. 16 with one of the features below.

1 2 3 4 5 6 7 8 9 10 11 12
Thick ice cloud
Thin ice clouds / cirrus
Water clouds
Snow on mountains
Snow-free vegetated land
Snow-free bare soil
Sea

When you have selected the answers, press done and take a look at the correct answers.

  1 2 3 4 5 6 7 8 9 10 11 12
Thick ice cloud +
Thin ice clouds / cirrus + +
Water clouds + +
Snow on mountains + + +
Snow-free vegetated land +
Snow-free bare soil +
Sea + +

Figure 16: Natural Colour RGB images on 8 March 2014 at 09:16 UTC