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ZLabe

@ZLabe@fediscience.org

Climate Scientist (Atmospheric) at NOAA GFDL | PhD | UC Irvine and Cornell University alum | Sharing data-driven stories | Be kind | Views and thoughts expressed are mine own |

My research and communication interests coincide with disentangling patterns of climate change from climate variability using data-driven methods. Also, scary movie fan!

#Arctic #ClimateChange #DataViz #MachineLearning #OpenScience #Python #SciComm #Weather #wxMastodon #wxTwitter

This profile is from a federated server and may be incomplete. For a complete list of posts, browse on the original instance.

ZLabe , to random
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Aside from around the Southern Ocean/Antarctic, most all latitude bands observed temperatures above the 1951-1980 reference period for March through May 2024.

[Plot shows zonal-mean surface temperature anomalies, with latitude = y-axis (not scaled by distance). GISTEMPv4 data.]

ZLabe , to random
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Average May sea ice volume since the year 1901...

Comparison between PIOMAS-20C and PIOMAS datasets available at https://doi.org/10.1175/JCLI-D-19-0008.1. This graphic can be downloaded at https://zacklabe.com/arctic-sea-ice-volumethickness/.

ZLabe , to random
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Year-to-year variability with a long-term decline in May sea ice volume (bar) and thickness (map). Updated through May 2024 🧊

Animation showing a geographic map of the Arctic and a bar graph with Arctic sea ice thickness and volume for each May from 1979 to 2024. There is a long-term decreasing trend, but also large interannual variability. Sea ice thickness and volume is shown using shades of pink and yellow. Thickness ranges from 0 to 5 meters. Volume has dropped from about 32,000 km^3 to 22,00 km^3. Data is from PIOMAS v2.1.

ZLabe , to random
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Trend in June temperatures across the ...

The largest warming has been observed in the Siberian Arctic. Temperature anomalies/trends are smaller over sea ice in summer due to melting-thermodynamic processes. Data: @CopernicusECMWF ERA5. More info: https://doi.org/10.1175/BAMS-D-23-0079.1

kristianpagh ,
@kristianpagh@mastodon.world avatar

@ZLabe @CopernicusECMWF Hmm, ERA5 doesn't include changes in the albedo in glaciated areas, and it has cloud biases over the Arctic Ocean. Couldn't these issues affect this trend map?

ZLabe OP ,
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@kristianpagh A discussion of biases in ERA5's Arctic temperatures can be found here: https://www.nature.com/articles/s43247-024-01276-z and https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL082781

ZLabe , to random
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May 2024 data is now available from GIOMAS for both Antarctic sea-ice thickness/volume (https://zacklabe.com/antarctic-sea-ice-extentconcentration/) and global sea-ice volume (https://zacklabe.com/global-sea-ice-extent-conc/).

Blanco ,
@Blanco@c.im avatar

@ZLabe 1000 years from now they will appreciate the data to understand how stupid we are today.

ZLabe , to random
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Have a great week! Here's your Monday ice update - #Arctic sea ice extent is currently the 10th lowest on record (JAXA data)...

• about 80,000 km² above the 2010s mean
• about 590,000 km² below the 2000s mean
• about 1,180,000 km² below the 1990s mean
• about 1,750,000 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.
ALT
  • Reply
    • dystopod ,
    @dystopod@social.tchncs.de avatar

    @ZLabe
    Thank you - the same to you, too.

    My ice update today: two vegan Magnum ice cream alternatives (one organic) plus a little portion of vanilla/cherry/brownie ice cream.

    😋

    noplasticshower ,
    @noplasticshower@zirk.us avatar

    @ZLabe everything is fine #climatechange

    ZLabe , to random
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    Revisiting the regional departures around the world during the record warm global mean temperature from the last 3 months...

    🟥 warmer than average
    🟦 colder than average

    Data information/questions addressed at https://data.giss.nasa.gov/gistemp/faq/

    secoiqq ,
    @secoiqq@mastodon.social avatar

    @ZLabe I've always wondered, do flat earthers think the other side is just a black empty disk? Is it rough, or smooth? do unicorns live there along with Bigfoot? Sorry, haven't had my morning coffee yet, I digress....

    Pepperbike ,

    @ZLabe we won't be happy as a species until it is blood red.

    ZLabe , to random
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    A longer perspective for May sea ice extent (since 1850)...

    You can read more about this reconstruction at https://carbonbrief.org/guest-post-piecing-together-arctic-sea-ice-history-1850

    Line graph time series of May Arctic sea ice extent for every year from 1850 through 2024. Two datasets are compared in this time series. The Walsh et al. 2019 reconstruction is shown with a solid blue line. The NSIDC Sea Ice Index v3 is shown with a dashed red line only for the satellite era. There is large interannual variability and a long-term decreasing trend over the last few decades.
    ALT
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    • ZLabe , to random
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    100 years of average May temperature anomalies over land areas through 2024...

    Data from https://data.giss.nasa.gov/gistemp/

    Animation of global maps showing May surface air temperature anomalies over land for each year from 1925 to 2024. There is a long-term warming trend. Anomalies are calculated relative to a 1951-1980 baseline using NASA/GISS GISTEMPv4.

    AnOldGuy ,
    @AnOldGuy@mastodon.au avatar

    @ZLabe But what could it possibly be!

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Sea surface temperatures are warming across the periphery of the Ocean in June during the satellite-era. This is evident in both the north Pacific and north Atlantic.

    [Data from OISSTv2.1. For more info: https://repository.library.noaa.gov/view/noaa/56617]

    ZLabe OP ,
    @ZLabe@fediscience.org avatar

    @Brad_Rosenheim This does not have a large effect. In fact, 1982 was a particularly cool SST in the Arctic, which is shown in the timeseries in the link above.

    Jennifer ,

    @ZLabe we're watching a catastrophe in slow motion

    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.
    ALT
  • Reply
    • 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.
    ALT
  • Reply
    • 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

    yapluca ,
    @yapluca@mastodon.top avatar

    https://showyourstripes.info/c/europe/france/all/

    @ZLabe

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    And now visualizing the June solstice from the polar regions...

    Animation looks downward at the North Pole (left; ☀️) and South Pole (right; 🌙) over a 24-hour period. Graphic from https://zacklabe.com/arctic-climate-seasonality-and-variability/

    Animation shows two orthographic maps looking downward at the Northern Hemisphere (left) and downward on the Southern Hemisphere (right) using hourly solar radiation data. The Arctic and Antarctic circles are also denoted with dashed lines. Nighttime and daytime are visible given this data information.

    ZLabe OP ,
    @ZLabe@fediscience.org avatar

    @hawe11 Yah, unfortunately the colors get a bit washed out toward that end of the scale in this visual.

    phil_stevens ,
    @phil_stevens@mastodon.nz avatar

    @ZLabe What just clicked for me is that our irradiance around noon is not too different from what the North Pole is getting all day long right now (40 S).

    ZLabe , to random
    @ZLabe@fediscience.org avatar

    Happy ! Have a great day! 🙂

    Understanding seasons - a look at the hourly incoming sunlight during the two solstices (23.5°N/S). I've added a red marker for ease of viewing. Graphic available at https://zacklabe.com/arctic-climate-seasonality-and-variability/.

    Animation showing two global maps at the solstice of hourly solar radiation in June and December. Day/night periods are shown in this visualization. The red dot is located at the maximum, which is either north or south of the equator line that is annotated.

    ZLabe OP ,
    @ZLabe@fediscience.org avatar

    @ruthpozuelo Thanks! It's Python... Here is a bit more on the packages used: https://zacklabe.com/methods-and-open-software/

    ruthpozuelo ,
    @ruthpozuelo@mastodon.social avatar

    @ZLabe Wonderful, thanks !

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