Zack Labe Profile picture
14 Dec, 6 tweets, 7 min read
The annual @NOAA Arctic Report Card is available today for 2021. It discusses recent changes in the #Arctic, extreme events, and broader human/environmental impacts.

+ Report: arctic.noaa.gov/Report-Card/Re…
+ Video:
+ Highlights: arctic.noaa.gov/Report-Card Infographic showing a visual of the highlights in the 2021 A
@NOAA @NOAAResearch @NOAANCEI I am happy again to have played a small role in this year's report - see our section on Arctic sea surface temperatures: arctic.noaa.gov/Report-Card/Re…

Also check out the fantastic collection of visuals by @NOAAClimate at climate.gov/news-features/… Map and line graph showing Arctic warming since the mid 1960
@NOAA @NOAAResearch @NOAANCEI @NOAAClimate @CSUAtmosSci "The Arctic story is a human story, and we all have a role to play in creating the best possible outcomes for the region, its residents, and all the citizens of the globe who depend on the Arctic as a critical component of our Earth system." ---> arctic.noaa.gov/Report-Card/Re…
There are also important essays describing increasing marine debris in the Bering/Chukchi Seas, changes in marine ambient noise levels, and a perspectives piece on the impact of COVID-19 on food access for Alaska Natives in 2020

---> See arctic.noaa.gov/Report-Card/Re… Map showing marine debris events in 2020 across the Bering S
“The trends are alarming and undeniable. We face a decisive moment. We must take action to confront the climate crisis.” - @NOAA Administrator Rick Spinrad noaa.gov/news-release/a…
Finally, here is a visualization showing the shocking transformation of the #Arctic into its new state.

The Arctic Report Card has been issued annually since 2006. arctic.noaa.gov/Report-Card/Re…

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More from @ZLabe

5 Jun
This is really quite striking... Line graph time series of daily Arctic sea ice extent in 202
Melt ponds are visible on satellite (blue shading) across much of the landfast sea ice along Siberia; e.g., in this image above the Lena River Delta.

[Satellite from 6 June 2021 using Sentinel-2; apps.sentinel-hub.com/sentinel-playg…] Satellite image of landfast ice above the Lena River Delta u
Last month observed temperatures more than 5°C above average across almost the entire Siberian #Arctic... 🔥

[Data from @CopernicusECMWF ERA5] Polar stereographic map of 2-m air temperature anomalies in
Read 5 tweets
30 May
More reading! A thread of peer-reviewed studies evaluating projections of 21st century Arctic sea-ice extent/area/thickness (seasonally ‘ice-free’)... 🧊📉

I am sure I missed a few, so feel free to add.

Note – I am not making any predictions from this thread 😅 Visualization showing monthly Arctic sea ice conditions at d
+ (02 – HadCM3 area/volume) doi.org/10.1029/2001GL…
+ (04 – ECHAM4/HadCM3 extent) doi.org/10.3402/tellus…
+ (05 – perspective) doi.org/10.1029/2005EO…
+ (06 – CMIP3 area) doi.org/10.1175/JCLI37…
+ (06 – CCSM3 extent) doi.org/10.1029/2006GL…
+ (07 – CMIP3 regional extent) doi.org/10.1029/2007GL…
+ (07 – CMIP3 extent) doi.org/10.1029/2007GL…
+ (09 – Constraining CMIP3 extent) doi.org/10.1029/2009GL…
+ (09 – Reducing spread CMIP3 extent) nature.com/articles/ngeo4…
+ (11 – CCSM4 extent) doi.org/10.1029/2011GL…
Read 9 tweets
27 Mar
Over the last 5 years, there have been plenty of extreme weather/climate events in the #Arctic. While the scientific process takes time, there are now lots of studies investigating these cases. Please add to this thread with other peer-reviewed studies on recent Arctic extremes!
*Overall trends/extremes/reviews*

+ Warming warming events: agupubs.onlinelibrary.wiley.com/doi/full/10.10…
+ Poleward moisture transport: onlinelibrary.wiley.com/doi/abs/10.100…
+ Arctic cyclones: doi.org/10.1017/aog.20…
+ Arctic sea ice: iopscience.iop.org/article/10.108…
+ “New Arctic”: nature.com/articles/s4155…
+ 2015 Alaskan wildfires: journals.ametsoc.org/view/journals/…
+ 2015 Greenland melt: nature.com/articles/ncomm…
+ Winter 2015 cyclones: nature.com/articles/s4159…
+ Arctic 2015 extremes: agupubs.onlinelibrary.wiley.com/doi/full/10.10…
+ December 2015 warm air event: agupubs.onlinelibrary.wiley.com/doi/10.1002/20…
Read 9 tweets
8 Jan 20
🚨 2019 was the 2nd warmest year on record - @CopernicusECMWF analysis. An excellent summary is provided at climate.copernicus.eu/copernicus-201…

While 2019 rankings between various data sets may differ slightly (e.g., 2 or 3), the long-term warming is undoubtedly clear... Line graph time series of running mean global temperatures for various data sets
🚨 Last year's #Arctic sea ice extent averaged the *2nd lowest* on record. Sea ice is declining in all months of the year (iopscience.iop.org/article/10.108…).

Check out @NSIDC's annual/decade summary: nsidc.org/arcticseaicene…
🚨 #Arctic sea ice volume in 2019 also averaged the *2nd lowest* on record (albeit close to the last few years).

Check out @PolarScience_UW's summary: psc.apl.uw.edu/research/proje… Line graph time series of annual mean Arctic sea ice volume from 1979 to 2019
Read 5 tweets

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