1 Dec 2021 - 15:14 UTC
PTC Sam - Air Mass at 51.0°N - 39.4°W
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Apparent 'jumps' in the animation occur due to adjustments to reflect storm movement.
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About Air Mass
Air Mass RGB is used to diagnose the environment surrounding synoptic systems by enhancing temperature and moisture characteristics of airmasses. Cyclogenesis can be inferred by the identification of warm, dry, ozone-rich descending stratospheric air associated with jet streams and potential vorticity (PV) anomalies. The RGB can be used to validate the location of PV anomalies in model data. Additionally, this RGB can distinguish between polar and tropical airmasses, especially along upper-level frontal boundaries and identify high-, mid-, and low-level clouds.
• For more details, see the Air Mass RGB Guide, (PDF, 1.1 MB)