Alfredo
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alfremath.bsky.social
Alfredo
@alfremath.bsky.social
65 followers 380 following 24 posts
Interested in climate change , math , science , hiking and mountaineering.
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Reposted by Alfredo
vrubinobs.bsky.social
Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory!

Can you guess these regions of sky?

This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪

#RubinFirstLook
ls.st/rubin-first-look-livestream
A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. The image focuses on a collection of interacting galaxies connected by delicate streams of stars. At top center lies a large elliptical galaxy that is dense and smooth, like a polished stone glowing with golden light. Like delicate spider silk or stretched taffy, these stellar bridges link the large elliptical to the few larger galaxies beneath, evidence of past collisions. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black. A cosmic tapestry of glowing tan and pink gas clouds with dark dust lanes. In the upper right, the Trifid Nebula resembles a small flower in space. Its soft, pinkish gas petals are surrounded by blue gas, and streaked with dark, finger-like veins of dust that divide it into three parts. It radiates a gentle, misty glow, diffuse and soft like the warmth of breath on a cold hand. To the lower left, the much larger Lagoon Nebula stretches wide like a churning sea of magenta gas, with bright blue, knotted clumps sprinkled throughout where new stars are born. Both nebulae are embedded in a soft tan backdrop of gas that is brighter on the left than on the right, etched with dark tendrils of dust and sprinkled with the pinpricks of millions of stars. A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.
June 23, 2025 at 4:06 AM
Reposted by Alfredo
climatologist49.bsky.social
There it is. The first ever Heat Advisory issued in Alaska. This is the first year it has been an option. @alaskawx.bsky.social
June 13, 2025 at 4:48 AM
Reposted by Alfredo
etsc.eu
Study on London 20 mph limits shows:
- collisions ⬇️ 35%
- casualties ⬇️ 36%
- fatal/serious injuries ⬇️ 34%
- child casualties ⬇️ 46%
- child deaths ⬇️ 75%
- walkers, cyclists, motorcyclists killed/seriously injured ⬇️ 28%

etsc.eu/20mph-limits...
20mph limits in London linked to sharp fall in road injuries and deaths, new report finds
A new study published by Transport for London (TfL) has shown that the introduction of 20mph speed limits and zones on local authority-managed roads in London between 1989 and 2013 led to significant…
etsc.eu
June 3, 2025 at 1:35 PM
Reposted by Alfredo
ericholthaus.com
The Keeling Curve started in 1953. It measures the amount of carbon dioxide in the atmosphere.

310-330 ppm: ~20 years
330-350: 14 yrs
350-370: 13 yrs
370-390: 10 yrs
390-410: 9 yrs
410-430: 7 yrs

Climate change is accelerating. And 75 years later, human emissions are still *increasing* each year.
ericholthaus.com Eric Holthaus @ericholthaus.com · May 13
Every day so far this month has been above 430ppm -- for the first time in human history.
The Keeling Curve @keelingcurve.bsky.social · May 12
430.15 parts per million (ppm) CO2 in air 11-May-2025 keelingcurve.ucsd.edu
May 13, 2025 at 3:12 PM
Reposted by Alfredo
kevpluck.bsky.social
Lowest recorded maximum Arctic sea ice area
Chart of maximum Arctic sea ice area showing a consistent trend from 14.6 million km² in 1979 to 12.5 million km² in 2025.
April 1, 2025 at 10:31 AM
alfremath.bsky.social
#seeyouattheequator
March 27, 2025 at 2:23 PM
Reposted by Alfredo
extremetemps.bsky.social
HISTORIC ARCTIC WARM
Dozens of February warm records destroyed in ICELAND yesterday
locally broken with up to 7C margin (see list provided by
@hungurdiskar

SVALBARD:Ny Alesund MINIMUM +2.3C highest ever in February
This is just the beginning,dozens/hundreds more coming next week
February 2, 2025 at 10:39 AM
alfremath.bsky.social
Tariffs are self imposed sanctions #changenmymind
February 2, 2025 at 1:43 PM
alfremath.bsky.social
With Trump's tarrif war mixed with the deportations , inflation in United States will be rampant
February 2, 2025 at 1:27 PM
Reposted by Alfredo
health.bnonews.com
Hello 👋 Our COVID/bird flu updates are now on Bluesky!
January 28, 2025 at 9:23 PM
Reposted by Alfredo
zacklabe.com
Last month was the 2nd warmest December on record globally. The largest anomalies were found this month across portions of the Arctic, which also observed the lowest December sea-ice extent on record.

Data by NOAAGlobalTemp v6.0.0 (www.ncei.noaa.gov/products/lan...). 🧪⚒️
A line graph shows the time series of global mean surface temperature anomalies for each December from 1850 through 2024. There is a long-term increasing trend and large year-to-year variability. The mean surface temperature anomaly in December 2024 was 1.26°C globally. Anomalies are computed relative to a 1901-2000 climate baseline. A map of temperature anomalies in December 2024 is also shown. Red shading is for warmer than average temperatures, and blue shading is shown for colder than average temperatures. The climatological baseline on the map is relative to 1971 to 2000. All data is from NOAA/NESDIS/NCEI NOAAGlobalTemp v6.0.0 on this graphic.
January 25, 2025 at 12:42 PM
Reposted by Alfredo
theplanetaryguy.bsky.social
A deep-field image from JWST.

The blue, six-pointed features are stars in the Milky Way.

Everything else is a galaxy.
January 24, 2025 at 7:11 PM
Reposted by Alfredo
zacklabe.com
46 years of average annual sea ice thickness across the Arctic... 🌊❄️🥼

Graphic now available to include 2024 at: zacklabe.com/arctic-sea-i...
Collection of small polar stereographic maps showing the average yearly Arctic sea-ice thickness for each year from 1979 to 2024. There is large spatial variability, but a long-term decreasing trend. The thickness of ice ranges from 0 meters to more than 5 meters.
January 24, 2025 at 12:55 PM
alfremath.bsky.social
@ambarturosarukhan.bsky.social que bueno encontrarlo por acá
January 23, 2025 at 2:49 PM
Reposted by Alfredo
planet4589.bsky.social
Well, big news. I am planning to move the Space Library to a new home. And I need some help - in 35 years I've never asked for funding, donations or subscriptions for my Space Report, to keep it independent, but now I need to raise some additional funds.
www.gofundme.com/f/fund-jonat...
Donate to Fund Jonathan's Space Report Library Transition, organized by Jonathan McDowell
For 35 years I've been sharing information about space exploration w… Jonathan McDowell needs your support for Fund Jonathan's Space Report Library Transition
www.gofundme.com
January 22, 2025 at 5:33 AM
Reposted by Alfredo
zacklabe.com
Global temperature anomalies by month through April 2024. Every month so far this year has been >1.20°C above the 1951-1980 climate baseline.

Note: M = sunspot cycle max, m = sunspot cycle min, V = volcano

Data from NASA/GISS GISTEMPv4. Visualization prepared by columbia.edu/~mhs119/Temp...
Heat map-style graphic showing monthly global mean surface air temperature anomalies for every month from January 1880 through April 2024. A 'V' symbol is also shown for major volcanic eruptions. A 'm' symbol is shown for solar minima and a 'M' is shown for solar maxima. Every month is observing a long-term warming trend. There is also some interannual variability.
June 1, 2024 at 3:53 PM
alfremath.bsky.social
Pasen sus recomendaciones de cuentas a seguir en español, principalmente de divulgación de ciencia porfavor
October 4, 2023 at 5:54 PM
Reposted by Alfredo
akod.bsky.social
Acabas de llegar a Bluesky? Ojo acá.

Voy a hacer un hilo de feeds que recomiendo ampliamente seguir. Ya sea para encontrar nueva gente que seguir o para filtrar un poco sus Skylines de todo el ruido.

Sientanse en la libertad de añadir más en las respuestas.

Let's do this.
July 31, 2023 at 6:10 PM
Reposted by Alfredo
capitalweather.bsky.social
September shattered global heat record — and by a record margin www.washingtonpost.com/weather/2023...
A graph of yearly temperatures from 1991 to 2022 compared to 2023. The 2023 line is way ahead of all other years in September.
October 3, 2023 at 7:22 PM
Reposted by Alfredo
zacklabe.com
ICYMI - the latest monthly observations of carbon dioxide (CO₂) and methane (CH₄)...

For more data/info: https://gml.noaa.gov/ccgg/ 🧪
Line graph time series of monthly global carbon dioxide and methane abundance from January 1984 through 2023. There are seasonal cycles and long-term increasing trends for both greenhouse gases. Current carbon dioxide levels are at 424 ppm, and current methane levels are at 1921 ppb.
July 30, 2023 at 2:39 AM
Reposted by Alfredo
zacklabe.com
Temperatures in June 2023:
🟥 - warmer than average
🟦 - colder than average

The average global air temperature was a record high at:
+1.07°C above 1951-1980 baseline
+1.22°C above 1921-1950 baseline
+1.36°C above 1880-1920 baseline

Data code/info: https://data.giss.nasa.gov/gistemp/sources_v4/ 🧪
Global map showing surface air temperature anomalies for June 2023. Most areas are warmer than average, except for parts of western Australia, Greenland, south Pacific, and United States. Red shading is shown for warmer anomalies, and blue shading is shown for colder anomalies. The largest temperature anomalies are in the Antarctic.
July 25, 2023 at 12:57 PM
Reposted by Alfredo
luckytran.com
In the last 48 hours:

Rome beat its all time temperature record by a whole two degrees Celsius.

China beat its all time temperature record by almost two degrees Celsius.

Death Valley narrowly missed the highest temperature ever recorded on Earth.

And there's more to come...
3 heat maps of earth showing high temperatures for Rome, Italy; Figueres, Catalunya; Sanbao, China; and Saratoga Spring, USA.
July 18, 2023 at 9:12 PM
alfremath.bsky.social
Probando
July 24, 2023 at 11:30 PM