I'm attempting to calculate temperature from Landsat 5 and 8 thermal bands. I've already calculated NDVI, where the NDVI bands were corrected using dark object subtraction.
I see that many people use top of atmosphere reflectance to determine temperature. Would it be incorrect for me to use the DOS bands I calculated to determine temperature, or do I need to go back one step and use TOA reflectance?
Specifically, would it be inappropriate to use DOS radiance for the L lambda term instead of TOA radiance? The equation I'm referring to is the last one on the page I linked.