Remote sensing to evaluate primary production may be interpreted only after cons
ID: 141515 • Letter: R
Question
Remote sensing to evaluate primary production may be interpreted only after considering its assumptions and the validity of corrections applied to account for them. Which of the following sorts of corrections seem necessary to you? (more than two answers may be possible)
a) a factor based on what times of day a satellite passes over a site.
b) a factor based on ground observations of the biomass of vegetation when it was remote-sensed.
c) an allowance for the effect of non-photosynthetic plant pigments on reflectance.
d) correlations with weather data to estimate how efficiently the chlorophyll present was working when sensed.
e) an allowance for the effect of atmospheric interference (clouds, pollution) while sensing.
Explanation / Answer
ANSWER
THE OPTION - (E) & (B)IS CORRECT an allowance for the effect of atmospheric interference (clouds, pollution) while sensing
Satellite data provide the only viable means for extensive monitoring of remote and large freshwater systems, such as the Amazon floodplain lakes. However, an accurate atmospheric correction.
The presence of dense forest or biomass around water bodies contributes to modify the water spectrum measured by orbital sensors.