Which one of the following features creates problems in the Satellite Remote Sensing data?

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UGC NET Paper-2: Geography 18th Dec 2018

Answer 1

Remote sensing is the acquiring of information from a distance. Remote sensors, which provide a global perspective and a wealth of data about Earth systems, enable data-informed decision making based on the current and future state of our planet.
With the development of remote sensing from space, satellite data offers the possibility for measuring land surface temperature over the entire globe with sufficiently high temporal resolution and with complete spatially averaged rather than point values.
It is also possible to measure chlorophyll content in the vegetation of a specific location as chlorophyll will reflect more light in the green and near infrared spectrum compared to other wavelengths.
Remote sensing from satellites can also deliver information on green house gas(GHGs) soil emissions by estimating tropospherical, near-surface CO2 and CH4 concentrations based on the measurement of the intensity of the reflected sunlight in small wavelength bands in the visible and short-wavelength IR portion of the spectrum.
Remote sensing has emerged as a major tool in studying and analyzing the complex water resource systems.
However, whilst the efficiency of the response can be hampered when cloud cover limits image availability.