ZLabe , to random
@ZLabe@fediscience.org avatar

Trends in June sea ice concentration are still mostly confined to coastal areas of the Ocean. The largest declines are found in the Barents Sea this time of year.

[Sea ice concentration = fraction of ice-cover (observed by satellite). Info: https://doi.org/10.1175/BAMS-D-23-0079.1]

Polar stereographic map showing Arctic sea ice concentration trends in % per decade. Red shading is shown for declining sea ice and blue shading is shown for increasing sea ice. All areas are observed long-term sea ice declines during the month of June. Trends are calculated over the 1979 to 2023 period.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    sea ice extent is currently the 10th lowest on record (JAXA data)

    • about 60,000 km² above the 2010s mean
    • about 590,000 km² below the 2000s mean
    • about 1,160,000 km² below the 1990s mean
    • about 1,680,000 km² below the 1980s mean

    Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

    Line graph time series of 2024's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with white for the 1980s, green for the 1990s, blue for the 2000s, and purple for the 2010s. Thin white lines are also shown for each year from 2002 to 2022. 2024 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between April and July by looking at the decadal average line positions.
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    • AlaskaWx , to random
    @AlaskaWx@alaskan.social avatar

    Arctic warming has been relentless since the late 20th century. @ed_hawkins @Climatologist49 @ZLabe

    lavergnetho , to random
    @lavergnetho@fediscience.org avatar

    edition by @SigneAaboe and our colleagues at :

    extent:

    🟦 more than climate normal;
    🟥 less than climate normal;

    Data from @osi_saf

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Located within the , Svalbard is one of the fastest warming regions of the world in response to climate change.

    ➡️ Explore your own climate change stripes! https://showyourstripes.info

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    The total area of sea ice is declining in every month of the year. However, the largest losses of sea ice are observed during the late summer and early fall.

    For more information: https://repository.library.noaa.gov/view/noaa/56616. Concentration means the fraction of ice cover.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Now back to your regularly scheduled programming - There is a widespread positive trend for increasing precipitation across the Ocean in June, which is largest near the North Pole & some coastal land regions

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Trends in June sea ice thickness across the Ocean - red shading corresponds to areas of thinning ice over the last few decades. The largest declines are in the East Siberian Sea and Chukchi Sea regions.

    [Simulated data by PIOMAS; https://journals.ametsoc.org/view/journals/clim/31/8/jcli-d-17-0436.1.xml]

    NunavutBirder , to random
    @NunavutBirder@mas.to avatar

    Midnight. And they are home.

    The frozen ocean. Pools of water on the ice interspersed with snow. A Glaucous Gill flies by. Two snowmobiles pulling qamutiq come in from the distance and stop.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Enjoy your week! Here's your Monday ice update - sea ice extent is currently the 9th lowest on record (JAXA data)...

    • about 200,000 km² below the 2010s mean
    • about 690,000 km² below the 2000s mean
    • about 1,230,000 km² below the 1990s mean
    • about 1,700,000 km² below the 1980s mean

    Additional plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

    Line graph time series of 2024's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with white for the 1980s, green for the 1990s, blue for the 2000s, and purple for the 2010s. Thin white lines are also shown for each year from 2002 to 2022. 2024 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between April and July by looking at the decadal average line positions.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    Evolution of May sea ice and sea surface temperature (SST) anomalies during the satellite-era...

    A summary of last month can be found from the NSIDC at https://nsidc.org/arcticseaicenews/2024/06/an-early-hudson-bay-opening/

    *SST data set (OISSTv2.1) is only available since about 1982

    showing Arctic sea ice concentration and sea surface temperature anomalies for every May from 1982 to 2024. Blue shading is shown for colder anomalies, and red shading is shown for warmer anomalies. Sea ice concentration is shown with shades of white and grey. There is large spatial variability, but long-term warming sea surface temperatures and decreasing sea ice. A gold line for the 1982-2010 sea ice extent median is also shown.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Evolution of June sea ice thickness by decade...

    Data information: https://climatedataguide.ucar.edu/climate-data/pan-arctic-ice-ocean-modeling-and-assimilation-system-piomas

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    The regional patterns of temperature anomalies across the over the last 12 months...

    Data from ERA5 reanalysis at https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview

    Twelve polar stereographic maps showing 2-m air temperature anomalies in the Arctic from June 2023 to May 2024. Blue shading is shown for colder anomalies, and red shading is shown for warmer anomalies. All months are warmer than average overall. Anomalies are computed relative to a 1981-2010 baseline.
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    • NunavutBirder , to random
    @NunavutBirder@mas.to avatar

    Off they go for an extended weekend.

    Video of a skidoo pulling a qamutiq with my wife and daughter in it, across the frozen Arctic Ocean.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Happy Friday! Enjoy your weekend! Here's your latest ice update - sea ice extent is currently the 6th lowest on record (JAXA data)...

    • about 100,000 km² below the 2010s mean
    • about 780,000 km² below the 2000s mean
    • about 1,290,000 km² below the 1990s mean
    • about 1,730,000 km² below the 1980s mean

    More plots: https://zacklabe.com/arctic-sea-ice-figures/

    Line graph time series of 2024's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with white for the 1980s, green for the 1990s, blue for the 2000s, and purple for the 2010s. Thin white lines are also shown for each year from 2002 to 2022. 2024 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between April and July by looking at the decadal average line positions.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    climate rankings are in for May 2024: https://zacklabe.com/archive-2024/. A quiet month there.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Monday ice update - sea ice extent is currently the 5th lowest on record (JAXA data)...

    • about 170,000 km² below the 2010s mean
    • about 800,000 km² below the 2000s mean
    • about 1,320,000 km² below the 1990s mean
    • about 1,740,000 km² below the 1980s mean

    Plots: https://zacklabe.com/arctic-sea-ice-figures/

    Line graph time series of 2024's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with white for the 1980s, green for the 1990s, blue for the 2000s, and purple for the 2010s. Thin white lines are also shown for each year from 2002 to 2022. 2024 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between April and July by looking at the decadal average line positions.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    Changes in June temperatures in the by decade... The strong warming over Siberia is directly linked to land-atmosphere processes from long-term loss of snow cover.

    @CopernicusECMWF ERA5 reanalysis]

    Four polar stereographic maps showing Arctic near-surface air temperature anomalies for the month of June in 1984-1993, 1994-2003, 2004-2013, and 2014-2023. Most all areas are observing long-term warming, which is largest over ocean areas. Anomalies are calculated relative to 1951-1980 from ERA5.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    🚨 Sea ice across the Hudson Bay (Canada) is observing a historic spring with record early losses of sea ice...

    Each line represents one year from 1979 (purple) to 2023 (white). 2024 is in red. Data from the NSIDC using the passive microwave satellite record.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Have a great weekend! Here's your Friday ice update - sea ice extent is currently the 6th lowest on record (JAXA data)...

    • about 30,000 km² below the 2010s mean
    • about 630,000 km² below the 2000s mean
    • about 1,150,000 km² below the 1990s mean
    • about 1,550,000 km² below the 1980s mean

    More plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

    Line graph time series of 2024's daily Arctic sea ice extent compared to decadal averages from the 1980s to the 2010s. The decadal averages are shown with different colored lines with white for the 1980s, green for the 1990s, blue for the 2000s, and purple for the 2010s. Thin white lines are also shown for each year from 2002 to 2022. 2024 is shown with a thick gold line. There is a long-term decreasing trend in ice extent for every day of the year shown on this graph between April and July by looking at the decadal average line positions.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    My monthly temperature graphics have just been updated for May 2024, which was another pretty uneventful month across the region: https://zacklabe.com/arctic-temperatures/

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Some of the largest temperature anomalies in the last month were observed in northern Canada with departures up to 8°C above the 1981-2010 mean baseline. Cooler conditions were found in Greenland however.

    Data from @CopernicusECMWF ERA5 reanalysis.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    air temperature rank by month over the satellite era - now updated through May 2024. Another mostly quiet month.

    Heat map-style graphic showing monthly air temperature rankings in the Arctic at the 925 hPa level for each month from January 1979 to May 2024. There is a long-term warming trend evident in each month. Blue shading is shown for colder months, and red shading is shown for warmer months. A yellow number is shown for each grid box to display the actual temperature ranking. May 2024 was the 14th warmest May on record.
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    • ZLabe , to random
    @ZLabe@fediscience.org avatar

    Both poles ( and ) are still observing sea ice extent below the 1981-2010 average. Note that JAXA data is unavailable until the end of the week - I'll update my graphs then.

    More visuals: https://zacklabe.com/arctic-sea-ice-figures/. Data below from https://nsidc.org/data/seaice_index

    Line graph time series of 2024's daily Antarctic sea ice extent compared to 1981-2010 climatological statistics. The graph shows the seasonal cycle, and ice-free conditions are indicated at 1 million square kilometers. Sea ice is currently well below average for early June.

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    May 2024 sea ice extent was statistically tied for the 12th lowest on record...

    This was 510,000 km² below the 1981-2010 average. May ice extent is decreasing at about 2.34% per decade. Data: https://nsidc.org/data/seaice_index

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