Hello. I'm conducting a research of the surface temperature of a in-land reservoir in Brazil. To estimate the surface temperature, i'm trying to use Landsat's TIRS, bands 10 and 11, and MODIS MOD11A1 thermal product. MODIS has way too low spatial resolution for my study site, while Landsat's TIRS has high resolution, but no solid LST algorithm. I intended to compare both sensors data to create a regression curve, but i stumbled on the fact that I can't find simultaneous data from both satellites. MODIS offers daily data (at 10.30 AM) , while Landsat 8 delivers one image every 16 days (at 10.00AM). They should have simultaneous data every 16 days, but that doesn't happen.
Every time I find a Landsat8 image from my area, the corresponding MODIS data presents a blank/void/null stripe, exactly over Landsat's 8 data. Does anyone know more about it? Why can't I find simultaneous data from Landsat8 and MODIS Terra? My study site can be found at: 20° 44' 17" S ; 45° 56' 01" W Sorry for any grammar mistakes. English is not my native language. Thank you!