![\"GOES-16](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2018\/08\/180801_goes16_water_vapor_Arctic_Canada_anim.gif\")
<\/a>GOES-16 Low-level (7.3 \u00b5m),<\/em> Mid-level (6.9 \u00b5m)<\/em> and Upper-level (6.2 \u00b5m)<\/em> Water Vapor images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>Animations of GOES-16 (GOES-East)<\/em> Low-level (7.3 \u00b5m<\/strong><\/a>), Mid-level (6.9 \u00b5m<\/strong><\/a>) and Upper-level (6.2 \u00b5m<\/strong><\/a>) Water Vapor images (above)<\/strong><\/em> showed features moving eastward across Nunavut<\/strong><\/a> in northern Canada on 01 August 2018. These images covered the far northern portion of the GOES-16 Full Disk view in AWIPS, and depicted frontal wave<\/strong><\/a> disturbances within the polar jet stream<\/strong><\/a> over that region.<\/p>\n Due to the large satellite viewing angle or “zenith angle”, the 2 km water vapor image pixel dimension (at satellite sub-point)<\/em> increased to around 6.4 km or 4 miles (below)<\/em><\/strong>.<\/p>\n Magnified view of a GOES-16 Mid-level (6.9 \u00b5m)<\/em> Water Vapor image, showing the pixel dimension over Nunavut, Canada [click to enlarge]<\/p><\/div>Another effect of the large satellite view angle was a shift of the Water Vapor weighting functions<\/strong><\/a> to higher altitudes — plots of the 7.3 \u00b5m, 6.9 \u00b5m and 6.2 \u00b5m weighting functions calculated using 12 UTC rawinsonde data from Baker Lake, Nunavut<\/strong><\/a> are shown below. These plots depict the layers of the atmosphere from which emitted radiation was detected by each of the 3 Water Vapor spectral bands on the ABI<\/strong><\/a> instrument.<\/p>\n<\/a>