Martín Hoecker-Martínez
@msmithma.bsky.social
Hot, cold, salty, fresh, humid, sheared, convective, & awesome! Physics Prof. (he/el). My views, not my employer's.
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.
Or it's an artifact of smoothing the data. This is the same graph using a 14 day window to smooth the data and estimate the rate of change.
October 26, 2025 at 11:31 PM
Or it's an artifact of smoothing the data. This is the same graph using a 14 day window to smooth the data and estimate the rate of change.
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.
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?
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.
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
Once more, for old times sake.
June 25, 2025 at 10:34 PM
Once more, for old times sake.
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_...
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!
del pueblo
por el pueblo
para el pueblo
SIN REYES
por el pueblo
para el pueblo
SIN REYES
June 13, 2025 at 2:43 PM
del pueblo
por el pueblo
para el pueblo
SIN REYES
por el pueblo
para el pueblo
SIN REYES
There was a peaceful if confrontational standoff between the National Guard and the protesters today until LAPD started closing in from both sides of on Alameda St.
June 9, 2025 at 4:14 AM
There was a peaceful if confrontational standoff between the National Guard and the protesters today until LAPD started closing in from both sides of on Alameda St.
oops the colors not rendered properly.
June 5, 2025 at 5:01 AM
oops the colors not rendered properly.
I love the Fourier transform but sadly for real signals there is unavoidable spectral leakage. It's especially bad when the frequency differs from a multiple of the fundamental by either (f_0)/2 or (f_0)/4. One has the worst low frequency leakage the other has worse high frequency leakage.
June 5, 2025 at 4:53 AM
I love the Fourier transform but sadly for real signals there is unavoidable spectral leakage. It's especially bad when the frequency differs from a multiple of the fundamental by either (f_0)/2 or (f_0)/4. One has the worst low frequency leakage the other has worse high frequency leakage.
A better version populated with observed principal harmonics from the nearest NOAA tide station in Los Angeles Harbor tidesandcurrents.noaa.gov/stationhome....
May 21, 2025 at 11:53 PM
A better version populated with observed principal harmonics from the nearest NOAA tide station in Los Angeles Harbor tidesandcurrents.noaa.gov/stationhome....
I found the solar AND the lunar tides!
May 21, 2025 at 3:18 AM
I found the solar AND the lunar tides!
My little observatory has been running for long enough to show multiple seasonal cycles. This makes me unreasonably happy! (Data still needs significant quality control so caveat emptor)
May 6, 2025 at 4:32 AM
My little observatory has been running for long enough to show multiple seasonal cycles. This makes me unreasonably happy! (Data still needs significant quality control so caveat emptor)
Dear @drshepherd2013.bsky.social a long while ago you posted about the brown ocean effect (and your scholarship about the same) thank you for giving me an idea for a quiz topic for my meteorology students after we finish our tropical cyclone unit.
April 9, 2025 at 10:46 PM
Dear @drshepherd2013.bsky.social a long while ago you posted about the brown ocean effect (and your scholarship about the same) thank you for giving me an idea for a quiz topic for my meteorology students after we finish our tropical cyclone unit.
Thanks for giving me an activity for my Meteorology class!
April 2, 2025 at 7:19 PM
Thanks for giving me an activity for my Meteorology class!
Thanks @unidata.bsky.social for maintaining the metpy project so I can make figures for my students
March 17, 2025 at 8:35 PM
Thanks @unidata.bsky.social for maintaining the metpy project so I can make figures for my students
For context in the Arctic the low extent this winter is consistent with a linear trend (dotted line).
February 24, 2025 at 4:43 PM
For context in the Arctic the low extent this winter is consistent with a linear trend (dotted line).