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Zack Labe

@zacklabe.com

Climate Scientist at @climatecentral.org | PhD | Passionate about improving science communication through data-driven stories | Harrisburg, PA | https://zacklabe.com/ Views, thoughts, and opinions expressed here are only my own.

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Zack Labe@zacklabe.com · 4h ago

🚨 Last month set a new record for the hottest average global sea surface temperature in the month of July! Record warmth is found in both the deeper ocean and at the surface. This isn't necessarily a surprise, but it will have consequences for around the world. Data in the graphic from NOAA ERRSTv6

Green line graph time series of average sea surface temperature anomalies for each July from 1900 through 2026. There is large interannual variabaility, but an overall long-term increasing trend. Anomalies are computed relative to a 1981-2010 baseline.
Zack Labe@zacklabe.com · 18h ago

"The fires, heat and extremes that have dominated the summer of 2026 are what scientists have long been warning about from the burning of coal, oil and gas." via @apnews.com

This summer isn't breaking heat records — yet. Wait until El Nino kicks in, scientists say

With parts of the globe aflame in wildfires, deadly heat waves parking over cities, record hot oceans and a strengthening super El Nino, it seems like we’re baking through the hottest year on record.

apnews.com

Zack Labe@zacklabe.com · yesterday

100 years of July sea surface temperature anomalies... you'll see important patterns of regional climate variability as the animation evolves, but ultimately, the story behind the long-term trend toward record warmth is driven by human-caused climate change. Data from @noaa.gov ERSSTv6. 🌊

Zack Labe@zacklabe.com · 2d ago

Monday ice update - #Arctic sea ice extent is currently the 12th lowest on record (JAXA data)... • about 10,000 km² below the 2010s mean • about 840,000 km² below the 2000s mean • about 1,680,000 km² below the 1990s mean • about 2,440,000 km² below the 1980s mean More: zacklabe.com/arctic-sea-i...

Line graph time series of 2026'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 purple for the 1980s, blue for the 1990s, green for the 2000s, and white for the 2010s. Thin white lines are also shown for each year from 2000 to 2025. 2026 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 July and September by looking at the decadal average line positions.
Zack Labe@zacklabe.com · 3d ago

Overnight temperatures are warming up across much of the contiguous United States during the month of August. Some of the largest trends are across the West, especially for daytime maximum temperatures (which I will post later). More U.S. climate change visuals: zacklabe.com/united-state...

Map of changes in August minimum temperatures across the contiguous United States from 1976 to 2025. Nearly all areas are seeing warming, which is largest over the South and West. Data is from NClimGrid.
City Atlas@cityatlas.bsky.social · 3d ago

"The wind blew smoke and flames across North Indian Trail Road so quickly, firefighters were yelling at people nearby to run." www.spokesman.com/stories/2026...

'When the sun rises, we are going to be in shock': Thousands evacuated in north Spokane as wildfire crosses river into city

Walls of flames destroyed dozens of homes and other structures in the Indian Trail neighborhood and more areas of Spokane on Saturday amid one of the worst natural disasters in the city’s history.

spokesman.com

Zack Labe@zacklabe.com · 3d ago

The story right now across both poles is very striking regional differences in sea-ice area. Fortunately, ice conditions improved a bit last month in the Bellingshausen Sea region (still below average). + Concentration means the fraction of ice in an area + Graphic from zacklabe.com/antarctic-se...

Two polar stereographic maps side-by-side showing Antarctic sea ice concentration and its anomalies relative to 1981-2010 for July 2026. Red shading is shown for less ice, and blue shading is shown for more ice. More areas are below average than above. Antarctica is masked out in grey shading.
Zack Labe@zacklabe.com · 5d ago

Friday ice update - #Arctic sea ice extent is currently the 8th lowest on record (JAXA data)... • about 140,000 km² below the 2010s mean • about 990,000 km² below the 2000s mean • about 1,830,000 km² below the 1990s mean • about 2,600,000 km² below the 1980s mean More: zacklabe.com/arctic-sea-i...

Line graph time series of 2026'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 purple for the 1980s, blue for the 1990s, green for the 2000s, and white for the 2010s. Thin white lines are also shown for each year from 2000 to 2025. 2026 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 July and September by looking at the decadal average line positions.
Zack Labe@zacklabe.com · 5d ago

Compare across different regions in 2026! These graphics look at the varying seasonality and trends in the magnitude of monthly temperature anomalies since 1940 for the Northern Hemisphere, Southern Hemisphere, Arctic, and Antarctic... Data from @copernicusecmwf.bsky.social ERA5 reanalysis.

Line graph time series of monthly mean surface temperature anomalies for the Northern Hemisphere region only. Every month is shown from 1940 to 2026. 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 Southern Hemisphere region only. Every month is shown from 1940 to 2026. 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 Arctic region only. Every month is shown from 1940 to 2026. There is a long-term warming trend in all months of the year and a strong seasonality.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.
Zack Labe@zacklabe.com · 6d ago

June saw a sharp gradient in temperature anomalies across the Canadian Arctic, with much warmer than average temperatures north of Hudson Bay (>5°C above the 1981-2010 mean) but relative cooler conditions toward the Beaufort Sea. Data from doi.org/10.24381/cds...

Regional map of the Canadian Arctic showing June 2026 temperature anomalies. Anomalies are calculated to a 1981-2010 baseline with red being warmer than average, and blue being colder than average using ERA5 data.
Zack Labe@zacklabe.com · 6d ago

"The national average number of heat wave days, tropical nights, and instances of torrential rainfall over the past five years has risen to two to three times the levels documented in the 1970s." via www.techtimes.com/articles/321...

Korea Shatters July Heat Record: Yangsan Crosses 40°C, Busan Snaps 122-Year High

South Korea heat wave 2026 shattered records when Yangsan hit 40.3°C in July for the first time in Korean history, while Busan set a new all-time high of 38.8°C, topping a mark set in 2016. A dual hig...

techtimes.com

Zack Labe@zacklabe.com · 6d ago

A quick look at a cross-section of temperature trends in the lower atmosphere during the month of July. The bottom of the y-axis is the lower troposphere, and the upper portion is reaching into the stratosphere. The x-axis is latitude. Data is provided by ERA5.

Graphic showing a vertical cross-section of zonal mean temperature trends for all latitude bands in July from 1979 through 2025. There is a long-term warming trend in the troposphere and cooling in the stratosphere. Red shading is shown for warming trends, and blue shading is shown for cooling trends.
Zack Labe@zacklabe.com · 7d ago

Wednesday El Niño update - Some notable warming across a large part of the eastern half of the tropical Pacific Ocean during the last 7 days. And an ongoing strong westerly wind burst will continue to strengthen El Niño even further toward record territory. Data from NOAA OISSTv2.1. 🌊

Line graph time series of daily sea surface temperature anomalies in the Nino3.4 region. Years are shown from 1982 to 2025 in shades of blue to light yellow, and 2026 is shown in red. Climatologically, the largest anomalies are during the boreal winter in terms of magnitude. Data is from OISSTv2.1. Map of July 27, 2026 average sea surface temperature anomalies in the ENSO monitoring regions. Data is from NOAA OISSTv2.1 with anomalies relative to a 1991-2020 baseline.Graphic showing the 1-week change in sea surface temperature anomalies across the tropical eastern Pacific Ocean from July 20, 2026 to July 27, 2026. Data is from NOAA OISSTv2.1
Alan Gerard@wxmanms1.bsky.social · last wk.

Decided that I needed to share a scientific heart to heart today as part of my newsletter: Warmer planet=warmer oceans=higher rainfall rates & warmer minimum temperatures We understand this quite well - and the impacts all of this is having on our society are growing. tinyurl.com/5n7cvzb3

It's not just El Nino and the tropical Pacific - sea surface temperatures globally are at record warm levels

And the impacts on global climate and weather are significant

tinyurl.com

Zack Labe@zacklabe.com · 7d ago

Sea surface temperatures are substantially warming around the entire #Arctic Ocean in July during the satellite-era. This is especially large in the Kara Sea. Note the blue shading mostly corresponds to areas of sea ice. Data by OISSTv2.1. For more info: doi.org/10.25923/pz7...

Polar stereographic map of sea surface temperature trends for Julys from 1979 to 2025. Red shading is shown for warming trends, and blue shading is shown for cooling trends. All areas of the ocean are observing warming.
Zack Labe@zacklabe.com · last wk.

Global mean sea surface temperature anomalies (departure from average) so far this year ➡️ 2nd highest on record 🌊 Data from ERSSTv5 averaged over January to June.

Green line graph time series of average sea surface temperature anomalies for each January to June period from 1900 through 2026. There is large interannual variability, but an overall long-term increasing trend. Anomalies are computed relative to a 1981-2010 baseline.
Zack Labe@zacklabe.com · last wk.

Monday ice update - #Arctic sea ice extent is currently the 8th lowest on record (JAXA data) • about 230,000 km² below the 2010s mean • about 1,130,000 km² below the 2000s mean • about 1,920,000 km² below the 1990s mean • about 2,710,000 km² below the 1980s mean More: zacklabe.com/arctic-sea-i...

Line graph time series of 2026'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 purple for the 1980s, blue for the 1990s, green for the 2000s, and white for the 2010s. Thin white lines are also shown for each year from 2000 to 2025. 2026 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 June and August by looking at the decadal average line positions.