@ZLabe@fediscience.org
@ZLabe@fediscience.org avatar

ZLabe

@ZLabe@fediscience.org

Climate Scientist (Atmospheric) PhD | Postdoc at Princeton University & NOAA GFDL | UC Irvine and Cornell University alum | Sharing data-driven stories | Be kind | Views are my 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

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ZLabe, to worldwithoutus
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Watch what happens. Changes in the age of sea ice during wintertime...

Note that younger sea ice is usually thinner and more vulnerable to melting. Data from https://nsidc.org/data/nsidc-0611.

Animation of polar stereographic maps showing Arctic sea ice age in late December for years from 1984 to 2022. Sea ice age is binned from 0-1 years, 1-2 years, 2-3 years, 3-4 years, 4+ years using different colors. Ice is getting younger with time on average.

ZLabe, to worldwithoutus
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Happy Friday! Here's your latest ice update - sea ice extent is currently the 14th lowest on record (JAXA data)...

• about 100,000 km² above the 2010s mean
• about 300,000 km² below the 2000s mean
• about 770,000 km² below the 1990s mean
• about 1,220,000 km² below the 1980s mean

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

ZLabe, to random
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Thrilled to share our new review paper that dives into using extreme event attribution information for improving infrastructure planning, decision-making, and adaptation in a warming world due to climate change.

➡️ Study (): https://doi.org/10.1016/j.rcns.2024.03.002

ZLabe, to random
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There was a particularly large gradient in the pattern of temperature anomalies across Antarctica last month. This is generally due to the position of the large-scale atmospheric circulation.

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

ZLabe, to worldwithoutus
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Nearly all areas of the have observed thinning ice over the last four decades. Trends in March are largest in the vicinity of the East Siberian Sea and north of Greenland.

[Data simulated from PIOMAS. For more info: https://doi.org/10.1175/JCLI-D-17-0436.1]

ZLabe, to random
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The persistent, historic warmth continued across the northern half of the Atlantic Ocean in February. Though note that there is substantial interannual variability along with the recent long-term warming trend.

Data available from NOAA ERSSTv5 (https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html).

ZLabe, to random
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100 years of average January-February temperature anomalies over land areas through 2024...

[Data from GISTEMPv4; some missing data prior to ~1960, especially over the Antarctic]

Animation of global maps showing January to February surface air temperature anomalies over land for each year from 1925 to 2024. There is a long-term warming trend.

ZLabe, to random
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Temperature anomalies over the last month (left), 3 months (center), and 12 months (right) in the Arctic... check out the magnitude of those departures north of Svalbard and Novaya Zemlya!

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

ZLabe, to random
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My February 2024 figures are now available for 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/) using the GIOMAS dataset. There are no new records in either pole.

ZLabe, to random
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The World Meteorological Organization (WMO) report on the State of the Global Climate 2023 was released today:

"2023 was the warmest year on record at 1.45 ± 0.12°C above the pre-industrial average."

Report: https://wmo.int/publication-series/state-of-global-climate-2023

ZLabe, to random
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Happy March Equinox! 🌞

Understanding seasons - incoming solar radiation around the two equinoxes (sun passes over the equator).

Download visual: https://zacklabe.com/arctic-climate-seasonality-and-variability/

Animation of two global maps showing incoming solar radiation in March and September for the two equinoxes, which are hovering over the equator.

ZLabe, to random
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March has observed a notable trend toward greater precipitation in the subpolar North Atlantic over the last few decades, especially around the Barents Sea where there has been a loss of sea ice.

ZLabe, to random
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Temperature anomalies well exceeded 5°C above the 1981-2010 average across large portions of the Arctic Ocean and in northern Siberia... 🙃

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

ZLabe, to worldwithoutus
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My monthly temperature graphics have been updated for February 2024, which was remarkably warm compared to average near the North Pole: https://zacklabe.com/arctic-temperatures/

ZLabe, to worldwithoutus
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Sea ice concentration trends in March are only confined to the outer edges of the Ocean, such as the Barents-Kara Seas and Sea of Okhotsk.

[Sea ice concentration = fraction of ice-cover. For more info: https://doi.org/10.1175/BAMS-D-23-0079.1]

ZLabe, to SciComm
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My next monthly visualization blog is posted which discusses our new studies on summertime temperatures in the United States using a climate graphic of mini temperature maps organized by decade: https://zacklabe.com/climate-viz-of-the-month/

ZLabe, to worldwithoutus
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While most of the Ocean is predominately ice covered in March, the edges reveal warming at the ocean surface. Warming trends are particularly large in the North Atlantic and Davis Strait/Labrador Sea.

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

ZLabe, to random
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The 12-month running mean global temperature anomaly continues to tick upward...

Graphic from https://zacklabe.com/climate-change-indicators/

ZLabe, to random
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Temperatures were much warmer than average during the last three months across most latitude bands outside of the Antarctic.

[Plot shows zonal-mean surface air temperature anomalies, where latitude = y-axis (not scaled by distance). Data: GISTEMPv4 (1951-1980)]

ZLabe, to random
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100 years of February temperature anomalies over land areas through 2024...

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

February surface air temperature anomalies over land for each year from 1925 to 2024 using a climate baseline from 1951-1980. There is a long-term warming trend and interannual variability.

ZLabe, to random
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This year was the warmest winter on record in the Northern Hemisphere. At this point, if someone is making a seasonal forecast, you absolutely must take into account the response to the climate change signal.

December-January-February (DJF) data from https://data.giss.nasa.gov/gistemp/

ZLabe, to random
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Our ninth consecutive month of record warmth - February 2024

🟥 warmer than average
🟦 colder than average

Overall, the average February global air temperature was +1.44°C above 1951-1980 climate baseline (+1.73°C above the 1880-1920 baseline). Data code: https://data.giss.nasa.gov/gistemp/sources_v4/

ZLabe, to worldwithoutus
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A longer perspective for February sea ice extent (since the year 1850)...

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

ZLabe, to random
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Join us (USAPECS) tomorrow for a webinar on the changing water cycle in the Arctic, with a special focus on extreme precipitation. More info/registration at: https://www.usapecs.org/post/webinar-water-frozen-arctic

USAPECS = United States Association of Polar Early Career Scientists (https://www.usapecs.org/)

ZLabe, to worldwithoutus
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Well below average temperatures are predicted during the next week around the sea ice edge. This may contribute to a later sea ice maximum this month, which will also be relatively high compared to recent years.

Map available at http://karstenhaustein.com/climate

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