Martín Hoecker-Martínez
@msmithma.bsky.social
Hot, cold, salty, fresh, humid, sheared, convective, & awesome! Physics Prof. (he/el). My views, not my employer's.
Note to self: Take advantage of opportunities to reach out to old acquaintances. I remember them fondly for a reason. It feels good to know they continue to exist out in the world.
January 14, 2026 at 8:28 PM
Note to self: Take advantage of opportunities to reach out to old acquaintances. I remember them fondly for a reason. It feels good to know they continue to exist out in the world.
A colleague showed me Winogradsky columns from their biology course. The dynamics are biological (obviously), chemical (reaction rates), physical (diffusion), and mathematical (partial differential equations)
d/dt(Oxy.) = Diff.*d^2/dz^2(Oxy.) -RxRate*Oxy.
Disciplinary distinctions are a lie!
d/dt(Oxy.) = Diff.*d^2/dz^2(Oxy.) -RxRate*Oxy.
Disciplinary distinctions are a lie!
January 14, 2026 at 1:29 AM
A colleague showed me Winogradsky columns from their biology course. The dynamics are biological (obviously), chemical (reaction rates), physical (diffusion), and mathematical (partial differential equations)
d/dt(Oxy.) = Diff.*d^2/dz^2(Oxy.) -RxRate*Oxy.
Disciplinary distinctions are a lie!
d/dt(Oxy.) = Diff.*d^2/dz^2(Oxy.) -RxRate*Oxy.
Disciplinary distinctions are a lie!
Law enforcement use of lethal force is always a failure. At best, insufficient resources are deployed to make a scene safe. At worst, a violent individual has been allowed to cloak their wrath under the color of law. Either way introspection and reform are needed.
January 9, 2026 at 11:20 PM
Law enforcement use of lethal force is always a failure. At best, insufficient resources are deployed to make a scene safe. At worst, a violent individual has been allowed to cloak their wrath under the color of law. Either way introspection and reform are needed.
For Pez, like gifts during the holiday, the biggest joy is in the giving (well dispensing).
December 26, 2025 at 5:30 PM
For Pez, like gifts during the holiday, the biggest joy is in the giving (well dispensing).
This is utter folly. NCAR hosts and maintains multiple basic tools the broad scientific community uses to process large data sets. This is the equivalent of salting the earth and putting towns to the torch. I struggle to understand the wanton needless destruction. www.usatoday.com/story/news/p...
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
www.usatoday.com
December 17, 2025 at 4:42 AM
This is utter folly. NCAR hosts and maintains multiple basic tools the broad scientific community uses to process large data sets. This is the equivalent of salting the earth and putting towns to the torch. I struggle to understand the wanton needless destruction. www.usatoday.com/story/news/p...
Reposted by Martín Hoecker-Martínez
NCAR is quite literally our global mothership.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
www.usatoday.com
December 17, 2025 at 2:59 AM
NCAR is quite literally our global mothership.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Annually arctic sea ice grows fastest between late Sept. and early Nov. peaking above 10^5 sq km/day. The peak has been getting later and and higher. This year it was later but it didn't make it above 10^5 sq km/day.
December 3, 2025 at 5:53 PM
Annually arctic sea ice grows fastest between late Sept. and early Nov. peaking above 10^5 sq km/day. The peak has been getting later and and higher. This year it was later but it didn't make it above 10^5 sq km/day.
Never forget the Buckingham π theorem
November 12, 2025 at 3:34 AM
Never forget the Buckingham π theorem
In October arctic sea ice expands over 100,000 sq km per day. It hasn't reached that rate (yet?). There are historically two periods of rapid expansion one in October and a secondary one in December.
Probably too early to say if the deviation is significant.
Data from @nsidc.bsky.social
Probably too early to say if the deviation is significant.
Data from @nsidc.bsky.social
October 26, 2025 at 10:46 PM
In October arctic sea ice expands over 100,000 sq km per day. It hasn't reached that rate (yet?). There are historically two periods of rapid expansion one in October and a secondary one in December.
Probably too early to say if the deviation is significant.
Data from @nsidc.bsky.social
Probably too early to say if the deviation is significant.
Data from @nsidc.bsky.social
Thank you to the organizers who create a place in the public square for us to each raise our voice and join the chorus.
October 18, 2025 at 10:20 PM
Thank you to the organizers who create a place in the public square for us to each raise our voice and join the chorus.
Interference fringes of a sodium lamp on a Post-It
October 16, 2025 at 5:15 PM
Interference fringes of a sodium lamp on a Post-It
Laying out moorings for the 2025/2026 observation season.
September 22, 2025 at 5:11 PM
Laying out moorings for the 2025/2026 observation season.
They finally came for a grant that I had a small part in. I knew it was a question of when. Thanks to those who shared their losses. Your openness helped me prepare for this and have realistic expectations.
September 17, 2025 at 4:53 AM
They finally came for a grant that I had a small part in. I knew it was a question of when. Thanks to those who shared their losses. Your openness helped me prepare for this and have realistic expectations.
9 d6s have an average of 31.5
7 d8s have an average of 31.5
3 d20s have an average of 31.5
My students will have to figure out how many rolls it takes to distinguish which set was rolled?
7 d8s have an average of 31.5
3 d20s have an average of 31.5
My students will have to figure out how many rolls it takes to distinguish which set was rolled?
August 13, 2025 at 7:57 PM
9 d6s have an average of 31.5
7 d8s have an average of 31.5
3 d20s have an average of 31.5
My students will have to figure out how many rolls it takes to distinguish which set was rolled?
7 d8s have an average of 31.5
3 d20s have an average of 31.5
My students will have to figure out how many rolls it takes to distinguish which set was rolled?
Someone please tell me there's alternate set of lyrics to "McCavity the Mystery cat" only it's about a curve's concavity and how at the inflection point "Concavity's not there!"
youtu.be/XmFNbUfQGCs?...
youtu.be/XmFNbUfQGCs?...
Cats | Taylor Swift Sings “Macavity” and Gives the Jellicles Catnip
YouTube video by Universal Pictures
youtu.be
August 12, 2025 at 1:55 AM
Someone please tell me there's alternate set of lyrics to "McCavity the Mystery cat" only it's about a curve's concavity and how at the inflection point "Concavity's not there!"
youtu.be/XmFNbUfQGCs?...
youtu.be/XmFNbUfQGCs?...
Reposted by Martín Hoecker-Martínez
I am community sourcing a list of people who are actively in search of MS/PhD students in planetary science/astrobiology/exoplanets for Fall 2026. If you are such a person, please fill out the following google form:
docs.google.com/forms/d/e/1F...
docs.google.com/forms/d/e/1F...
Planetary Science MS/PhD Positions for Fall 2026
Crowd sourced list of people who are looking for MS/PhD students to help connect prospective students with advisors so we can do even more fabulous planetary science! (Submitting a response indicates ...
docs.google.com
August 5, 2025 at 6:03 PM
I am community sourcing a list of people who are actively in search of MS/PhD students in planetary science/astrobiology/exoplanets for Fall 2026. If you are such a person, please fill out the following google form:
docs.google.com/forms/d/e/1F...
docs.google.com/forms/d/e/1F...
Waves carry momentum and energy. Energy can dissipate in the roiling surf. The momentum (parallel to the beach) can live on as an along shore current where the waves break.
July 19, 2025 at 6:14 PM
Waves carry momentum and energy. Energy can dissipate in the roiling surf. The momentum (parallel to the beach) can live on as an along shore current where the waves break.
The best part of having colleagues is sometimes they invite you to join them in and play in their sandbox
digitalcommons.lmu.edu/cate/vol18/i...
digitalcommons.lmu.edu/cate/vol18/i...
Annual GHG Emissions in CO2e From Turfgrass Maintenance in Los Angeles County
Maintaining turfgrass landscapes - including mowing, irrigation, and fertilization - is an under-recognized source of greenhouse gas (GHG) emissions, particularly carbon dioxide and nitrous oxides. Th...
digitalcommons.lmu.edu
July 17, 2025 at 8:58 PM
The best part of having colleagues is sometimes they invite you to join them in and play in their sandbox
digitalcommons.lmu.edu/cate/vol18/i...
digitalcommons.lmu.edu/cate/vol18/i...
Remember there was once a world where e-mail was not a given.
July 13, 2025 at 3:31 PM
Remember there was once a world where e-mail was not a given.
...A mighty woman...Mother of Exiles...cries
..."Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, ... to me,
...
Emma Lazarus
11/2/1883
..."Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, ... to me,
...
Emma Lazarus
11/2/1883
July 9, 2025 at 5:19 AM
...A mighty woman...Mother of Exiles...cries
..."Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, ... to me,
...
Emma Lazarus
11/2/1883
..."Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, ... to me,
...
Emma Lazarus
11/2/1883
Reposted by Martín Hoecker-Martínez
Ralph Keeling sked to appear tonight on @CNN in 10 pm Pacific/1 am Eastern broadcast on moves to cut funding to Mauna Loa Observatory, where Keeling Curve measurements have been made since 1958.
July 2, 2025 at 12:26 AM
Ralph Keeling sked to appear tonight on @CNN in 10 pm Pacific/1 am Eastern broadcast on moves to cut funding to Mauna Loa Observatory, where Keeling Curve measurements have been made since 1958.
Reposted by Martín Hoecker-Martínez
Our final updates have been posted to the Climate.gov website, and this will be our final post to our social media channels.
June 27, 2025 at 9:00 PM
Our final updates have been posted to the Climate.gov website, and this will be our final post to our social media channels.
I'm going to miss getting to make visualizations of sea ice. It was nice while it lasted I guess. nsidc.org/data/seaice_...
June 25, 2025 at 10:15 PM
I'm going to miss getting to make visualizations of sea ice. It was nice while it lasted I guess. nsidc.org/data/seaice_...
Do you know what's better than finding a reference for the narrow statistical error propagation task you are attempting? Finding that the text is open access!
library.oapen.org/handle/20.50...
library.oapen.org/handle/20.50...
Signal Processing
library.oapen.org
June 25, 2025 at 5:18 PM
Do you know what's better than finding a reference for the narrow statistical error propagation task you are attempting? Finding that the text is open access!
library.oapen.org/handle/20.50...
library.oapen.org/handle/20.50...
It's Flag Day. Put out your flags!
¡Alza las banderas!
¡Alza las banderas!
June 14, 2025 at 1:15 PM
It's Flag Day. Put out your flags!
¡Alza las banderas!
¡Alza las banderas!