Notices by Rick Thoman (alaskawx@alaskan.social)

Pan-Arctic view of 2024 average temperature departures from 1991-2020 baseline. For the Arctic (land and seas north of 60ºN) this was the third mildest calendar year on record: only 2016 and 2020 warmer. Nunavut, Canada had the second warmest year (exceeded only in 2010) and Iceland was the only land area even a bit cooler than normal. @Climatologist49 @cinderbdt

#Arctic #Climate

@EricFielding @Climatologist49 This is a Skew-T Log-P plot, so the line to the right is the air temperature and the line to left is the dew point. Labels on the left side are pressure in millibars. Labels on the bottom are °C.

@EricFielding @Climatologist49 Here's the Wednesday afternoon sounding from Fairbanks. Surface temp -30C, which is the lowest temperature in the atmosphere until 504mb (17,700 ft).

Sadly, so far the atmospheric carbon dioxide concentration is one of the most predictable climate change trends. Observed CO₂ Mauna Loa data from NOAA/Global Monitoring Laboratory. Ten-year forecast based on nothing but the recent trend. #ClimateChange

Breaking news: Nome up to 44F (6.7C) Wednesday morning is the highest temperature ever recorded in December. Climate observations at Nome since 1906. #akwx #Climate @Climatologist49 @Jdnome

From the National Hurricane Center Advisory at 7pm CDT Monday. Almost unbelievable strengthening. On 7pm Sunday advisory, NHC reported a central pressure of 981mb, so 84mb deepening in 24 hours. #Milton
@ingalls @BakerRL75

Tanacross #Dene #Language #Alaska

Wunenh Ch’et’ą̌ą’ Dit-tsiig "broadly, September lit. time when leaves turn yellow" In the upper Tanana valley this is more like late August to mid-September.
nén’ tenh k’et "October, lit. month of frozen ground"
noxɬuu "autumn, the time when the land freezes"
menh tadéetenh "the lake is freezing, ice is forming on the lake"

@ScoterD

October is the fastest warming month over much of the Arctic due to the loss of autumn sea ice, and that's driving changes in precipitation and snow. I take a look at these changes in the latest edition of the Alaska and Arctic Climate Newsletter.

Feel free to subscribe if you like. It's free and always will be.

@Climatologist49

https://alaskaclimate.substack.com/p/october-arctic-precipitation-changes

#akwx #Arctic #ClimateChange #Climate

#SilentSunday #Alaska #Autumn

High temperatures in and around Alaska on Saturday. Most areas near to a bit cooler than normal except for parts of the North Slope and Southeast. Still warm in the southern Yukon and NW British Columbia. #akwx #weather

Arctic sea ice is melting rapidly, as happens this time of year. Details in my latest Alaska and Arctic Climate newsletter. #akwx #Arctic #SeaIce #Climate

https://alaskaclimate.substack.com/p/arctic-sea-ice-july-2024-update

@Climatologist49

I muted the word "convention" for a week and my blood pressure is much better for it.

The sea ice extent in the Chukchi Sea remains quite high for this point in the season, about 15 percent above the 1991-2020 median. Open water path now in place Bering Strait to Pt Barrow but northeast Chukotka coast remains iced in. Based on NSIDC data, extent is the highest for July 13th since 2000. Some open water starting to show up along the Alaska Beaufort Sea coast. #akwx #Arctic #SeaIce
@Climatologist49 @ZLabe @cinderbdt

Friday afternoon at Utqiaġvik, Alaska’s northernmost community. Sea ice is gone, partly sunny, 45F (7C) and NE 16 mph. Image courtesy UAF Sea Ice group. #akwx #Summer2024 @Climatologist49 @cinderbdt

High temperatures in and around Alaska on Thursday. The same weather pattern bringing cooler temperatures and rain to northern Alaska is responsible for the exceptionally mild weather in the Aleutians. #akwx #weather

Sunday early evening view of the McDonald Creek wildfire from the Richardson Highway near Birch Lake. Image courtesy Alaska DOT. #akwx #Wildfire #Summer2024

Sunday afternoon view from UAF West Ridge of the McDonald Fire and the elevated smoke south of the Tanana River. Image courtesy Alaska Climate Research Center. #akwx #Wildfire #Summer2024
@anisian @CarrieinFbx @KarenLikesRocks

May 2024 temperature departures from 1991-2020 normal around the Arctic show a coherent pattern with three main areas of above normal temperatures and three areas of below normal. The warmth in the Nordic Arctic and parts of Canada was notable, while SW Greenland and the western Russian Arctic were notably cool. For the #Arctic overall (land & sea poleward of 60ºN), the May average temperature was 0.4ºC above normal but the coolest May since 2018. #Climate #Canada #Spring2024 @Climatologist49

Arctic 12-month running temperatures as the difference from the 1951-80 average, updated through April 2024. The 10-year smoothed average shows the long term trend, the 2-year average captures some of the short term variability. OISSTv2.1 courtesy of NOAA/PSL/ESRL
ERA5 courtesy of ECMWF/Copernicus. #Arctic #ClimateChange #Climate
@Climatologist49

And there it is: green-up on West Chena Ridge in Fairbanks, four days earlier than the 50 year median, and first "earlier than median" green-up since 2019. #akwx #ClimateDiary #Alaska #Spring2024 #Phenology
@CarrieinFbx @mivox @debmcqueen @leahwrenn @leepetersen @anisian @kenrhill