ZLabe

ZLabe, 2 months ago to worldwithoutus

Anomalously high #Arctic sea ice continued in the Sea of Okhotsk through all of February. But this is a region that melts out every summer, so it has little consequence for the rest of the region during the annual minimum extent

• Data: https://nsidc.org/data/g02202/versions/4
• Concentration = fraction of sea ice in a location

ZLabe, 2 months ago to random

Last month averaged the 2nd lowest #Antarctic sea ice extent on record for the month of February.

This was 930,000 km² below the 1981-2010 average. Data from https://nsidc.org/data/seaice_index

ZLabe, 2 months ago to worldwithoutus

#Arctic climate rankings are in for January 2024: https://zacklabe.com/archive-2024/.

HapHazard, 2 months ago to random

@ZLabe I'm thinking we have already passed the Arctic Sea Ice Maximum Extent for this freeze season. What do you think?

ZLabe, 2 months ago to random

Article out today on this year's unusually early spring in parts of the United States: https://www.washingtonpost.com/weather/2024/03/02/spring-arriving-early-united-states/, which is consistent with our previous research on this topic: https://link.springer.com/article/10.1007/s00382-016-3313-2

ZLabe, 2 months ago to worldwithoutus

February 2024 #Arctic sea ice extent was statistically tied for the 15th lowest on record...

This was 690,000 km² below the 1981-2010 average. February ice extent is decreasing at about 2.67% per decade. Data: https://nsidc.org/data/seaice_index

ZLabe, 2 months ago to random

A look at the distribution of #Antarctic sea ice and the associated anomalies relative to 1981-2010 close to the sea ice minimum this year (austral summer)...

Data from https://nsidc.org/data/g02202/versions/4. Concentration = fraction of sea ice in a location.

ZLabe, 2 months ago (edited 2 months ago) to random

Global ocean heat content is at record high levels - new update just in from the Japan Meteorological Agency dataset... 🔥

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

Increasing 61800000000000000000000 Joules per decade

ZLabe, 2 months ago to worldwithoutus

Another region that has contributed to the higher #Arctic sea ice cover this winter is in the Sea of Okhotsk, which has been particularly extensive compared to recent years...

[Data from https://nsidc.org/data/seaice_index. Location of region: https://zacklabe.files.wordpress.com/2022/08/b203f-nsidc_mapseas.png]

ZLabe, 2 months ago to worldwithoutus

#Arctic sea ice extent is currently the 14th lowest on record (JAXA data)

• about 230,000 km² above the 2010s mean
• about 400,000 km² below the 2000s mean
• about 780,000 km² below the 1990s mean
• about 1,340,000 km² below the 1980s mean

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

ZLabe, 2 months ago to worldwithoutus

Monthly mean #Arctic sea ice thickness now updated through all of fall 2023 from CryoSat-2. This year is not a record low again.

Note the data length is too short to assess long-term trends, but reveals important variability. Graphic: https://zacklabe.com/arctic-sea-ice-volumethickness/

ZLabe, 2 months ago to worldwithoutus

Weather conditions have been quite favorable for #Arctic sea ice to expand in the Greenland Sea this winter. But it's also worth looking more closely into what this meant for ice export, especially of thicker ice.

[Data from https://nsidc.org/data/seaice_index. Location of region: https://zacklabe.files.wordpress.com/2022/08/b203f-nsidc_mapseas.png]

ZLabe, 2 months ago to random

Patterns of February temperatures in the #Antarctic averaged by decade...

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

ZLabe, 2 months ago to random

Looking at the different seasonality and trends in the magnitude of monthly temperature anomalies since 1940 for the Northern Hemisphere, Southern Hemisphere, Arctic and Antarctic...

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

Line graph time series of monthly mean surface temperature anomalies for the Southern Hemisphere region only. Every month is shown from 1940 to 2024. There is a long-term warming trend in all months of the year.
Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to 2024. There is a long-term warming trend in all months of the year, but less obvious than the other regions.
Line graph time series of monthly mean surface temperature anomalies for the Arctic region only. Every month is shown from 1940 to 2024. There is a long-term warming trend in all months of the year.

ZLabe, 2 months ago to random

First global sea level rise update of 2024 - surprise, it's still going up...

This graphic is produced by CNES (AVISO): https://aviso.altimetry.fr/en/data/products/ocean-indicators-products/mean-sea-level.html

ZLabe, 2 months ago to random

🚨 The annual minimum has likely passed ➡️ "On February 20, Antarctic sea ice likely reached its minimum extent of 1.99 million square kilometers (768,000 square miles), tying for second lowest extent in the 1979 to 2024 satellite record."

See: https://nsidc.org/arcticseaicenews/2024/02/antarctic-sea-ice-extent-hits-third-low-in-row/

ZLabe, 2 months ago to random

ICYMI - the latest monthly observations of carbon dioxide (CO₂) and methane (CH₄)... 🥹

[For more data/info: https://gml.noaa.gov/ccgg/trends/]

ZLabe, 2 months ago to random

Due to contrasts in seasonality and sea ice characteristics between the two poles, there is a seasonality in global levels of sea ice extent. This year's minimum extent was well above the previous record from last year.

More sea ice graphics available at https://zacklabe.com/global-sea-ice-extent-conc/. Data from https://nsidc.org/data/seaice_index.

ZLabe, 3 months ago to worldwithoutus

Last month observed a wide range in #Arctic sea ice conditions along the ice edge. Large negative departures continued around the Gulf of St. Lawrence and Baffin Bay. Greater sea ice than average was found in the Greenland Sea and Sea of Okhotsk.

• Data: https://nsidc.org/data/g02202/versions/4
• Concentration = fraction of sea ice in a location

ZLabe, 3 months ago to worldwithoutus

Variability and long-term decline of January #Arctic sea-ice thickness and sea-ice volume. Low, but no new records again this year.

• Data information: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/validation/

Animation showing Arctic sea ice volume (bar graph) and thickness (line graph) for each January from 1979 to 2024. There is a long-term decreased in both thickness and volume, but also year-to-year variability.

ZLabe, 3 months ago to worldwithoutus

Have a good week! Here's your Monday ice update - #Arctic sea ice extent is currently the 15th lowest on record (JAXA data)...

• about 200,000 km² above the 2010s mean
• about 380,000 km² below the 2000s mean
• about 860,000 km² below the 1990s mean
• about 1,380,000 km² below the 1980s mean

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

ZLabe, 3 months ago to random

Last month observed below average sea ice concentration for much of the region surrounding the Antarctic continent, though higher concentration (and much thicker ice) is in the Weddell Sea.

Data from https://nsidc.org/data/g02202/versions/4. Concentration = fraction of sea ice in a location.

ZLabe, 3 months ago to random

My climate change dashboard is updated to kick off 2024...

Higher resolution graphic available at https://zacklabe.com/climate-change-indicators/