I'm in a tree

HomeProjectsWritingBookPublicationsPresentationsGithub

DatasetsMusicGamesEphemeraCVGoogle Scholar

Disclaimer: any errors on this website are in fact an attempt to transcend the reality circumscribed by the limits of language.


Hi, I'm Drew Pendergrass. My fair trade, organic, gluten-free website is lovingly built from whatever I decide to post online. It hosts a variety of projects, resources, and ephemera made over the years, including experimental music, my writing, a video game, a fake startup that sells logs on wheels, a stupid Chrome extension, and esoteric sorting algorithms, as well as my research papers and conference presentations in atmospheric science and related fields.

Currently, I am a doctoral student in Environmental Engineering at Harvard University, studying under Daniel Jacob, and I freelance on the side for publications including Harper's and The Guardian (send me stories at drew@drewpendergrass.com). More importantly, to my knowledge, there is no portrait of me that ages in my place, I am not a substitute for a medical doctor, and I accept the axiom of choice.

The latest science!

Pendergrass, D. C., D. J. Jacob, S. Zhai, J. Kim, J-H. Koo, S. Lee, M. Bae, and S. Kim. (2021). Continuous mapping of fine particulate matter (PM2.5) air quality in East Asia at daily 6x6 km2 resolution by application of a random forest algorithm to 2011-2019 GOCI geostationary satellite data. Under review at Atmospheric Measurement Techniques. PDF. Publisher's preprint. Associated dataset available from Dataverse.

Beijing pollution event zoomed

Figure: Daily PM2.5 concentrations during a pollution event in the North China Plain, around Beijing (December 16-21, 2016). Predictions from the random forest algorithm (background, on 6x6 km2 grid scale) are compared to observations made on the ground (circles). We see that the model is able to reproduce even this extreme level of pollution.


You can learn more about my research on the projects page, or you can read through all of our scientific papers and presentations on their respective pages.

Pre-order our book here (out April 19, 2022)!

We can move beyond the crisis Half-Earth Socialism book graphic.
Computer!

Writing spotlight

Some reflections on moving out of college early due to COVID-19: "Losing a Chair."

A Brief Q&A

Q. How can I contact you?

A. You can follow/DM me on Twitter, but I'm trying to stop using it so much, so it's best to email me at drew [at] drewpendergrass [dot] com (or the academic address in my CV). However, if your email is unpleasant, you should direct it to grievances@drewpendergrass.com, an inbox I definitely read.

Q. Who are you?

A. Well, to start off, I am not a closed, non-orientable, boundary-free manifold, I have never advocated on behalf of, or against, the Free Silver movement, I have no trouble distinguishing my right from my left, I have never traveled to an exoplanet, and I keep the old gods. If you for some strange reason would like to know something substantial about me, you can check out my projects page or my CV.

Q. Why does this page keep changing?

A. This page is randomly generated by the server on each load. Most of the page's contents are not displayed on one particular load, so for the full experience reload a bunch of times.

Q. Why don't you just host this crap on Github like a normal person?

A. Github only allows static websites. I wanted my website to be different for every visitor. DrewPendergrass.com, like life itself, must always be in flux. You could say I'm an artist.

This website proudly supports Otto Neurath and the ISOTYPE picture language

Neurath

Please represent all social facts pictorially in your correspondence with the owner and proprietor of this website. Do your part to help build a pluralistic and anti-metaphysical theory of knowledge.

Some true statements

I am not reptilian ... you cannot prove I have sympathies for the former state of Burgundy ... I have absolutely no intention of running for Senate in the great state of Minnesota ... I take my eggs over easy ... I am not to my knowledge a victim of a mummy's curse ... I have never commanded an army composed of more than 100,000 soldiers ... I appreciate knowledge of the outcome of a given situation ... I have nothing to do with explosions ... I am reluctant to resort to black magic ... I keep all my eggs in separate baskets ... I proudly possess object permanence ... my mind's eye exists only in a figurative sense ... I am capable of reading English ... I did not orchestrate the Camp David Accords ... I hold no world records ...

A Moving, and Random, Quotation

In the beginning there were days set aside for various tasks.

On the day He was to create justice

God got involved in making a dragonfly


and lost track of time.

It was about two inches long

with turquoise dots all down its back like Lauren Bacall.


God watched it bend its tiny wire elbows

as it set about cleaning the transparent case of its head.

The eye globes mounted on the case


rotated this way and that

as it polished every angle.

Inside the case


which was glassy black like the windows of a downtown bank

God could see the machinery humming

and He watched the hum


travel all the way down turquoise dots to the end of the tail

and breathe off as light.

Its black wings vibrated in and out.


-"God's Justice" by Anne Carson


Read more here.

Play Alchemy!

"So fun you won't even need friends!"


Box Cover

Bonus Content Zone!

Three Cryptic Messages Regarding Matters of Supreme Importance

  1. Please seize your nations before they belittle your perceptions.
  2. All enemies have been eliminated. Please fear the ideas.
  3. The captors will be feared.

One randomly-generated sorting algorithm, please!

Do you have an unsorted list of N natural numbers? Do you just hate it when programs are guaranteed to terminate? Do you get angry when algorithms do better than factorial time? Then you're in luck! The following algorithm has been generated just for you:

  1. Begin with a gaslighting strategy. Insist to everyone that the list is already in order, even if it is not. If they give up arguing with you, terminate the program. If they insist that you actually sort the list, proceed to the next step.
  2. Uh oh! You've triggered a penalty step. Before you proceed, you must perform a task. Andrew Wiles's proof of Fermat's Last Theorem is 109 pages long. Assuming each page contains roughly 2000 characters, the text can be encoded in order 1,000,000 bits. Generate this number of bits and check to see if they prove Fermat's Last Theorem. If they do not, repeat this step. If they do, proceed! You've paid the penalty. (This step was defined in collaboration with Mirac Suzgun).
  3. You turn to mathematical ecology for inspiration. For each number in your list, generate a population of rabbits proportional to the number and a population of wolves inversely proportional to the number. Wait for each system to equilibrate. Read off the equilibrium population of rabbits in order of population size, printing the number corresponding to each. (My lab partner Jackson Wagner points out that this is not a true sorting algorithm, since you still have to sort the population sizes. To Jackson, I reply that this is the least of our worries.)

Congratulations! Your list is now sorted. You can find a permalink to this particular algorithm here.

Computer!

Facts about corn or facts about Korn?

Click the line you think is about corn!

Example 1

Example 2

Example 3

Score: 0 • Streak: 0

All facts lovingly taken from Wikipedia.

You should google Graham Starr