tag:blogger.com,1999:blog-4572286363399496963.post3404563704155988903..comments2024-03-28T07:09:59.093-08:00Comments on Deep Cold: Alaska Weather & Climate: Historic Fairbanks Cold SnapsRickhttp://www.blogger.com/profile/03946704894714514716noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4572286363399496963.post-68917221291874442302017-01-12T10:05:14.086-09:002017-01-12T10:05:14.086-09:00Someday Richard will visit during a cold event and...Someday Richard will visit during a cold event and we can drive about and observe the temps, visibility, and depth of ice fog. <br /><br />https://www.youtube.com/watch?v=bF4FxCz2IY8<br />https://www.youtube.com/watch?v=Olbo4Am4U44<br /><br />Gary<br />NL7Yhttps://www.blogger.com/profile/15874712728971005352noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-38559693896168218042017-01-11T22:47:41.518-09:002017-01-11T22:47:41.518-09:00I suggest ice fog has been increasingly less preva...I suggest ice fog has been increasingly less prevalent because of reduced vehicle and heating appliance/power plant emissions despite the cold. And yes it's not been since the last mid-Century for cold weather.<br /><br />That's not to suggest the ice fog element decreases radiation at the surface and increases potential winter temperatures (an interesting theory), but in the '60's to later '70's we had ice fog at a Class #1 and accompanying real long cold spells. Now it's (so far this winter for example) not been as bad as I recall.<br /><br />So where's the measurement of fog? Typically at the airport. It's a clear open area adjacent to the lower Chena River air drainage subject to frequent turbine aircraft emissions and the collection of fog from residential Fairbanks uphill.<br /><br />Surely there's been low level temp measurements with and w/o ice fog present? There's WX balloons every day plus several pollution studies regarding temperature inversion.<br /><br />GaryNL7Yhttps://www.blogger.com/profile/15874712728971005352noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-4593545132760076542017-01-11T19:50:00.372-09:002017-01-11T19:50:00.372-09:00Normally during inversions, Ft. Wainwright is cold...Normally during inversions, Ft. Wainwright is colder than the airport. So if the Airport temp is significantly colder, then the possibility of an instrument error increases. Eielson AFB is even colder than the other two. So there's another check.Eric Lundellhttps://www.blogger.com/profile/17914784378747801359noreply@blogger.comtag:blogger.com,1999:blog-4572286363399496963.post-1534043102107621042017-01-11T18:11:30.834-09:002017-01-11T18:11:30.834-09:00Thanks Rick, nice chart. Three years ago I tried ...Thanks Rick, nice chart. Three years ago I tried to look at the hypothesis that increased ice fog could help explain the decline of very cold temperatures, but the data suggested that ice fog is less common now than it used to be - presumably because it's not as cold. Do you know if anyone has looked at this to quantify the potential warming effect of fog? I still think it's an interesting question.<br /><br />http://ak-wx.blogspot.com/2014/01/cold-and-visibility-trends.html<br />Richard Jameshttps://www.blogger.com/profile/08313902028896263276noreply@blogger.com