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What is bottom atmosphere?
The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level.
You can also ask what is top of atmosphere radiance?
Top of Atmosphere (TOA) Reflectance is a unitless measurement which provides the ratio of radiation reflected to the incident solar radiation on a given surface. It that can be computed from satellite measured spectral radiance using the mean solar spectral irradiance and the solar zenith angle. What is the difference between radiance and reflectance? Radiance is the variable directly measured by remote sensing instruments. Basically, you can think of radiance as how much light the instrument "sees" from the object being observed. Reflectance is the ratio of the amount of light leaving a target to the amount of light striking the target.
Consequently, how do you convert dn to radiance?
First compute Spectral radiance for kth band using formula: Radk = (DN*SRk)/1024. Here the SR denotes the Saturation Radiance. These value is for B2: 47.5614; B3: 45.6998; and B4: 31.5000. These values are in unit of (mW/(cm2-sr-um). And another question, what is toa radiance? Radiance, Reflectance, and Top of Atmosphere (TOA. Radiance includes the radiation reflected from the surface, in addition to the radiation that bounces in from neighboring pixels, and the radiation reflected from clouds.
What is bottom reflection atmosphere?
The Bottom Of Atmosphere (BOA) reflectance, also known as the surface reflectance, i.e., satellite derived Top Of Atmosphere (TOA) reflectance corrected for the scattering and absorbing effects of atmospheric gases and aerosols, is widely used to monitor the land surface reliably and generate the greater majority of Thereof, what is digital satellite image? Remote sensing images are representations of parts of the earth surface as seen from space. Aerial photographs are examples of analog images while satellite images acquired using electronic sensors are examples of digital images. A digital image is a two-dimensional array of pixels.
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