In the short I think you're referring to the density of the individual droplets, and so you're right: the droplets are more dense than the atmosphere. The distinction is easy to miss, and the actual situation is surprising to most people
When you think about it, this has to be true since clouds float. If they were significantly heavier than the atmosphere they'd stop being clouds, and would be rain instead.
Wet air is less dense than dry air, since water molecules have a lower molecular mass than N2. In a cloud you also have liquid water droplets, which do increase the density, but typically only about enough to bring the density back up to that of dry air.
@hankgreen.bsky.social I'm a big fan, but you're not quite right in your latest short. You said a cloud is significantly heavier than the atmosphere. It's counter-intuitive, but this is not true.
My guess: we will end up padding budgets with more institution-required line items like “facility use fees” to cover the shortfall. The bigger problem might be the cut to overall NSF funding
Our contribution to the special issue of Ecohydrology celebrating Ignacio Rodríguez Iturbe is out! If you are interested in rooting depth check it out:
dx.doi.org/10.1002/eco....
Anyone want to get on zoom and be accountability buddies this afternoon? Tell me what you have been avoiding working on and I'll do the same and we can knock them out together!
The 16th Annual (not-always-Berkeley) #CatchmentScience Symposium @johnshopkins.bsky.social Bloomberg Center pre- @agu.org 2024! With James Kirchner and @theoryofciaran.bsky.social kicking it off :)
Pylustrator offers an interactive interface to find the best way to present your data in a figure for publication. Added formatting and styling can be saved by automatically generated code. https://pylustrator.readthedocs.io/en/latest/ #python
It did actually. The problem requires you to think about velocity in two distinct reference frames at the same time. It's easy to make the mistake of considering only one or the other.
...My errors stem from rushing to solutions based on patterns or partial reasoning rather than systematically verifying all relationships upfront."
I have never related so hard to an AI
"This problem challenges me because it combines nuanced physical interactions, feedback loops, and precise mathematical relationships, all of which require step-by-step consistency and testing edge cases...
A lesson on the limits of ChatGPT
I tested the AI on a classic fluid mechanics exam problem - and it flunked it
When asked why it messed up it gave a fascinating answer
Will be sharing with my students to teach caution in using LLMs to solve problems
chatgpt.com/share/674389...
The symposium will be held in the main theater of Johns Hopkins University's Bloomberg Center, 555 Pennsylvania Ave, DC from 8:30am to 6:00pm on Dec 8. Registration is $40 and includes bagel breakfast, lunch, and refreshments
.@matthiasprenger.bsky.social
(LBNL): Water use response to drought by subalpine trees in the Rocky Mountains on daily to decadal scales
Nandita Basu (Waterloo): Models, muddles and muggles: Rethinking environmental modeling to tackle societal problems
Ellen Wohl (Colorado State University): Knots in the strings: River- to network-scale cumulative effects of modeling assumptions based on linear trends
@pierregentine.bsky.social (Colombia University): Memory processes in the terrestrial coupled carbon and water cycles
The Berkeley* Catchment Science Symposium is happening this year on the Sunday before AGU in DC🎉
Registration Link is here: symposium.brownpapertickets.com
Keynotes from Ellen Wohl, Pierre Gentine, Matthias Sprenger, and Nandita Basu! Plus your pop-ups and posters. More info 👇
Haven't posted on here much but just got a bunch of new followers. Hi!
Also, is there a name for the feeling when a bunch of people in a room suddenly start looking in your direction and you wonder if you just sprouted an extra head?
I will be reading a selection of messages from colleagues at the service. Please reply here or DM me a few sentences paying tribute to this kind, contentious, and brilliant man
A service will be held in Baltimore on Wednesday July 10th at noon. DM me for details if you would like to attend
Fellow of the AGU, editor-in-chief of GRL, with many friends and colleagues at Johns Hopkins, UC Boulder, and amongst those who shared his love of hydrogeology, glaciology, Critical Zone science, and applied math
Tragically, Hari Rajaram died last Thursday at his home in Baltimore. Hari was a well-known and beloved part of the earth science community, and he will be sorely missed
I screwed up the timezones, so this will be starting at 11am EDT / 5pm CET
So, starting in just under 2 hours. DM me for the link if you want to join. All welcome!
tagging: @paigeinabook.bsky.social @jamescraig.bsky.social @margaretzimmer.bsky.social @watershedduncan.bsky.social @julieeemai.bsky.social @mcmillanhydro.bsky.social @sledford.bsky.social @aphydro.bsky.social
tagging: @floodhydrology.bsky.social @drsallyet.bsky.social @davidguzzy.bsky.social @egrandehydro.bsky.social @matthiasprenger.bsky.social @hydrolejo.bsky.social @hydrodoctorj.bsky.social @jansei.bsky.social @liinastein.bsky.social @jpgannon.bsky.social @drarialshogren.bsky.social
Wednesday May 29 I'm going to host a read-along zoom session of Jim Kirchner's new Ensemble Rainfall-Runoff Analysis paper
Join as we read it together and chew the gristle! All are welcome at any career stage. DM me for a link.
9am-noon EDT / 1700-2000 CET
hess.copernicus.org/preprints/he...
I just got asked to review a big, tough paper by someone I really respect. I plan on going deep and trying to really get to grips with the math and the ideas they represent.
Here's my question: if I livestream myself doing that, would you watch and read along with me? 🤓 (there's a preprint)
Finally, the paper documenting our powerful StorAge Selection python package is out!
mesas.py is designed to be highly customizable, numerically precise, user-friendly, easily installed, and supported by documentation
gmd.copernicus.org/articles/17/...
This Turing-like pattern shows up in the grass at my in-laws place in North Carolina every Thanksgiving. What do you think causes it?
WTH, they're like perfect sinusoids!