13.3 µm - "CO₂" Longwave IR Band - 2 km resolution - Band 16 is used for mean tropospheric air temperature estimation, tropopause delineation, and as part of quantitative cloud products for cloud opacity estimation, cloud-top height assignments of cloud-drift motion vectors, and supplementing Automated Surface Observing System (ASOS) observations. GOES-16 Band 16 corresponds approximately to the old GOES-13 longwave IR channel.