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GOES Mid-Level Water Vapor Imagery:
Background:
This imagery is created using the 6.9 µm channel on the GOES-East satellite.
This infrared upper-level water vapor band is sensitive to both temperature and
water vapor in the atmosphere and has a weighting function that peaks at ~440 hPa.
Weighting functions describe the layer of the atmosphere from which the radiation
measured by a particular satellite channel was emitted. The weighting function
for the 6.9 µm channel is fairly broad and typically detects temperature and
water vapor in a layer from ~300-700 hPa.
Uses:
This imagery is useful for tracking mid-level water vapor features such as
tropical cyclone outflow layers and the Saharan Air Layer and can also be used
for estimating mid-level atmospheric motion vectors (AMVs).
For more SAL information, please visit the
SAL Background Information
page.
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