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Category: NUCAPS

Ozone and the airmass RGB

A GOES-17 airmass RGB, above, shows a strong feature in the Gulf of Alaska. It’s common to associate the orange and purple regions within that polar feature (that is accompanied by cloud features consistent with very cold air aloft) with enhanced ozone. What products are available online to gauge the... Read More

NUCAPS soundings along the Arctic Coast of Alaska

A benefit of Polar Orbiters over northernmost Alaska is a wealth of NUCAPS soundings from NOAA-20! The animation above shows useful profiles near Utqiagvik AK (formerly Barrow) for the nine hours between 1132 and 2128 UTC on 5 December 2021. The vibrant green point is the point selected for the... Read More

NUCAPS use over Alaska

A useful strength of NUCAPS profiles over Alaska is that at that northern Latitude, sequential overpasses will overlap so that one location will be sampled sequential times. In the example above, note for example that portions of Canada’s Northwest Territories are sampled three times. Much of southern Alaska is sampled... Read More