Remote Sensing Answer Key
Fairfax HS Invitational 2017
Station 1
1) Water-saturated snow and ice
2) Melt Ponds
3) The snow will not have melted in February
4) Glacier OR Greenland’s ice sheet
Station 2
5) It is summertime in Antarctica in December and there is considerable melting
6) Universal time
7) It is continually sunny during a short time in the summer (December) in Antartica
8) South
Station 3
9) Northerly
10) Hurricanes begin over water, the northern end of the track would have begun over the mainland
11) The prevailing winds are in an easterly direction in that area
12) Storms like Norbert can mix up deeper, nutrient-rich water and thereby stimulate enhanced phytoplankton growth in their wakes (shown as very bright blue in the image).
Station 4
13) Reflecting Power of a surface
14) EITHER (1) the increased runoff generated by the hurricane’s rain OR
(2) increased wave action associated with the passing storm
15) To the right (or to the southwest)
16) The small icebergs breaking off could reach the open sea
17) Calves
18)By examining only certain band or bandwidths in a given image
Station 5
19) Outflow from a freshwater river
20) Lake Michigan
21) Lake Erie
22) A color assignment for any band of a multispectral images that is done in an entirely arbitrary manner
23) A
24) Cyclones (or hurricanes) are low pressure systems & low pressure systems rotate COUNTER-clockwise in the Northern hemisphere
Station 6
25) Bering Strait
26) The international date line runs between them
27) North
28) Summer
29) There is no sea ice or snow cover that would exist here during the winter
Station 7
30) The fraction of an area that was cloudy (on average) each month
31) NO
32) The patterns are basically the same.
33) Over the OCEANS
34) Deserts
35) Gray Or Purple
Station 8
36) somewhere between four and six times greater
37)The area of 1975 coverage is at least twice that of 1977. The snow pack was probably between two and three times as thick. So the volume should be
Station 9
38)
A P Gamma Ray F K Infrared
I O Microwave or Radar J R Radio
G N Reflected Infrared C M Ultraviolet
D K Photographic Ultraviolet E K Visible
H L Thermal Infrared B P X-ray
39) Yes, large enough ones can be detected with Landsat
40) Active = Detecting energy that is reflected after being emitted and sent out to a target by a source
Passive = Detecting natural radiation that is emitted or reflected
41) Passive
42) Active
43) (A) Radiometric Correction (B) Atmospheric Correction
Station 10
44) It is caused by multi-year ice. The darker blocks of ice enclosed by lighter are older. Many of those blocks in turn contain even smaller pieces. The older ice broke up into individual floes, then new freezing took place, embedding the earlier ice now that ice sheet itself is in process of breaking apart.
45) D
46) A
47) Eddies Or Eddy Currents
48) Clockwise
Station 11
49) Northeast
50) The area was not snow-covered before the storm passed and the storm tracked south of this area so the snow did not cover this area
51) No
52) As the storm passed the temperatures to the south were above freezing so that the only precipitation would have been rain
53) 2003
54) 2004
55) the thickness variations and packing densities from onsite ground measurements are needed in order to estimate the volume of runoff
Station 12
56) An object or system which absorbs all radiation that hits it and then re-radiates the energy which is characteristic of this radiating system only NOT on the type of radiation which is radiant upon it.
57) What is the Earth’s Radiation Budget?
How much energy the Earth gets from the Sun and how much energy the Earth-System radiates back to outer space.
58)
A: Solar Incident Energy…………..Absorbed Solar Incident Energy raises the Earth’s temperature
B: Earth’s Emitted Energy…….Heat energy leaves the Earth’s system and lowers the temperature.
C: Solar Reflected Energy……..Surface Albedo lowers percentage of Solar incident energy that reaches the surface lowering the Earth’s temperature
59) Te = Effective temperature
Ts = Surface temperature
dT = the greenhouse increment.
60) 33 degrees Kelvin, and is a function of the efficiency of the infrared absorption.
61) Global models do not account for the discontinuity of energy flow in the system.
Zonal models include a part of an equation that accounts for the flow of energy from one latitudinal zone to the next.
The Zonal models provide a more clear and accurate picture.