Changes between Version 2 and Version 3 of FAQ/units


Ignore:
Timestamp:
Feb 22, 2012 11:16:23 AM (8 years ago)
Author:
mark1
Comment:

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  • FAQ/units

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    9 Level 1 data are supplied as calibrated at-sensor (ie not atmospherically corrected) radiance in units of uW/cm2/sr/nm (microwatts per centimetre-squared per steradian per nanometre). They are also multiplied by 1000 in the delivered files to avoid problems with floating-point arithmetic and storage.
     9For data processed in 2011 and earlier, the level 1 data are supplied as calibrated at-sensor (ie not atmospherically corrected) radiance in units of uW/cm2/sr/nm (microwatts per centimetre-squared per steradian per nanometre). They are also multiplied by 1000 in the delivered files to avoid problems with floating-point arithmetic and storage.
     10
     11For data processed in 2012 onwards the level 1 data are supplied as calibrated at-sensor radiance in units of nW/cm2/sr/nm. Please note that data values have not changed between 2012 and previous data, only that the scalar of 1000 has been brought into the units.
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    1113[wiki:FAQ Back to FAQ]