Tim Wallace
@wallacetim
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Senior Editor for Geography @nytimes PhD @UWMadisonGeog
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Joined June 2009
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Mississippi River system elevation study. Gel pen on black paper.
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Adjusting NOAA nighttime lights for population reveals areas that create an outsized amount of light per person living there.
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Do the natural colors that paint the landscape you call home give a hint about how you might vote in November? To some degree, yes.
The True Colors of America’s Political Spectrum Are Gray and Green
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Density of Population of Some of the Countries. A Complete Geography, 1906.
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Love these 1970s satellite-derived maps that are explicitly like "Eh, who knows? Clouds and satellite bits were blocking the view."
Emphasizes the fact that these maps are representations of single moments in time.
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This image from today shows that the polar vortex dropped some legit sea ice off in Chicago before heading east.
👀
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I often gush about how fun it is to be a geographer in this day and age.
Now, an epitome.
Such a pleasure working with
@dwtkns
,
@archietse
,
@jswatz
,
@larrybuch
, Guilbert Gates and others on this.
Geography is fun!
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My current favorite thing to do with earth imagery. Remove color from everything but subject matter.
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A Portrait of Earth in 2020.
An average of tens of thousands of daytime GOES-17 images, some from every day of the year. (With apologies to December 23-31. 😬)
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I run into these comparative maps all the time—showing one territory superimposed over another—so I'm gonna start dumping them all into this one thread.
1. Middle East in orange over the US, 1962.
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The English Channel in 2020, as seen by
@CopernicusEU
's Sentinel-1 imaging radar. This maximum reflectivity composite shows the year in shipping lanes, offshore wind farms, &c.
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Descartes Labs is mapping all of the trees (with machine learning)!
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Plotting all of the fires detected by MODIS over South America since 2012 is comical.
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Colors of the US, sorted by lightness and scaled by frequency.
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I've been staring at earth imagery and election results for at least four years, trying to find some kind of key trend in the relationship between the two. But for the most part, what I saw was either obvious or uncompelling (no offense, former me).
Along the border of some of the least similar county neighbors in the U.S.
86.5% Clinton, Oglala Lakota, S.D.
85.5% Trump, Sheridan, Neb.
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Earth in Two Dimensions. Albrecht Dürer to Agnes Denes: 100+ map projection illustrations and explainers. (I'll be adding to this. ~100 isn't enough.)
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Holy moly, did
@grammata
quietly push some amazing things to Mapshaper?!
Looooook, you can clip things in the gui!
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The details in this "Bird's Eye View of Manhattan" from roughly 1910 are 👀.
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It doesn't look like much to us nowadays, but this map and caption from a 1959 Waldo Tobler Geographical Review paper is a bit mind-bending.
"Map of the United States drawn directly by machine from a deck of 343 punched cards. Plotting time, approximately 15 minutes."
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Every now and again I come across an old book that just 🤯. Here's the latest: "A Hand-Book for Mapping, Engineering, and Architectural Drawing....", 1846.
Method for delineating mountains:
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And of course we wanted to see what the colors actually represented, so we ran the same analysis using land cover data. This was a tad nerve-racking to be honest. If the trends in this analysis were flat, our hypothesis about the colors would have been thrown out.
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🚨BIG (tiny!) MAP ALERT🚨
If you get your hands on today's print edition of
@nytimes
, you'll be treated to a giant two-page spread of analysis on how the vote shifted in 2020 featuring a 23.76″ wide map.
On A1, you'll be treated to a 1.8″ wide lil cutie version of the same.
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Extra! Extra! Read all about it!
The Drowning Coast, a special section featuring this wraparound cover emblazoned with a giant radar satellite image.
Our collaboration with
@NOLAnews
at your newsstand this Sunday!
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I love those USGS maps that (by virtue of being crammed on an arbitrary grid) end up being mostly water.
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How much has your neighborhood physically changed over the last decade? If you live in an American exurb, chances are the answer is "LOADS."
For
@qdbui
&
@emilymbadger
's latest,
@k3blu3
& I lent a hand.
A Decade of Urban Transformation, Seen From Above
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This 1932 accounting of the previous nine elections is by far the wildest pattern-filled
@nytgraphics
election map I've seen.
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3D traffic flow map right here in this 1941 Fortune Magazine.
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Just one of these left. Once it's gone, I'll move on to Mississippi River system elevation study II.
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Three things pop out at me here.
1. Oil and gas activity (Texas and North Dakota)
2. Suburbs! (like those around Chicago)
3. NYC to DC corridor
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Many fire maps making the rounds use default symbols regardless of map scale.
Here are the same points mapped in two ways:
1. Default symbol
2. At native scale
The default dot here is a full 200x larger than a dot at the resolution of the observation.
FIRE!
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This 1953 Fortune two pager on How the New Suburbia Socializes is fascinating.
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Aviation noise around Denver, Atlanta, Klamath Falls and Holyoke. Each square is about 35 miles across.
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Found a NOAA ftp with GFS forecast data. So I could, you know, check out that 🌀❄️polar❄️🌀❄️vortex❄️🌀 everyone's talkin about.
ftp://ftp.cpc.ncep.noaa.gov/GIS/gfs_0.25/
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MAPS
MAPS
MAPS
MAPS
A Guide to Innovative Design
So. Many. Map. Types.
Nearly 40 years ago.
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A late evening sunset in May on ice-capped Hrútfell, a table mountain in Iceland, via
@NASA_Landsat
.
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Sentinel-2 snapped a stunning image of Chicago and Lake Michigan today. That long crack in the ice (4th image) starts off of Montrose Beach and stretches to just north of Indiana Dunes National Park is nearly 40 miles long. 👏
@CopernicusEU
👏
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Isometric Land Values, Topeka, Kansas from Spatial Analysis, 1968
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I'm packing up my pencils, protractor and love of geographic storytelling for Santa Fe, New Mexico, where I'll be heading up creative efforts at
@DescartesLabs
.
It's a pretty cool time to be a geographer and I couldn't be more excited!
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The island of Hawaii and the extent of the current eruption in the Lower East Rift Zone of Kilauea.
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But then I started workin with the inimitable
@k3blu3
& we could think realistically about cranking through proverbial piles of data.
Last winter, I started playing around with this idea of color swatches acting as a sort of landscape fingerprint.
Colors of the US, sorted by lightness and scaled by frequency.
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For our final piece together,
@k3blu3
and I used ALL THE INK. Stunning layout by
@standardregular
and Guilbert Gates. Web version here: Behind the scenes here:
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Landsat 8 false color of irrigated lands in Southern Egypt today.
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The hacky bash script I wrote to process this image took about 8 minutes to run.
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I will keep adding to this.
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Here's a maximum wind speed composite image of the 2020 hurricane season around the contiguous United States. It shows the US as if everywhere experienced its highest winds of the season all at once. (Created using Real-Time Mesoscale Analysis data from
@NWS
).
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Urban growth c. late 1700s through early 1900s.
The Structure and Growth of Residential Neighborhoods in American Cities, 1939.
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Lil plug for the Global Surface Water data set. It really is incredible.
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Forgotten map type no. 10: 'Sparse straight lines only! map.'
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Here's a wider crop of the projection we're using for our Ukraine maps.
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My colleague, Krishna Karra, thought it'd be fun to map all of the solar, wind and oil & gas infrastructure in Texas using machine learning. I think he was right.
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When Krishna & I were convinced there might be trends across the political spectrum, he indexed 1-meter resolution imagery for the entire contiguous US and... how long did it take to run this on the
@DescartesLabs
platform, Krishna? 15 or 30 minutes? 👀
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The Image of The City, originally released in 1969, is incredible.
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International movement of crude petroleum and products, 1937.
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Forgotten map type no. 2: 'Government satellite elk monitoring map.'
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A Gratuitous Rundown of More Than Three Decades of Gratuitously Cartographic Advertisements in Fortune Magazine.
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If you got the print edition of
@nytimes
today, we'd love to hear about your personal stories on our buildings maps! I'll go first.
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Did y'all know that you can download Adobe production files for beautiful
@NatlParkService
maps?! (I certainly did not). Just pick a state, then a park, here () and you can see how those legendary map styles are made. Yay, NPS!
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If Kilauea's lava flow from Wednesday originated at Bryant Park in New York (which it doesn't and never will), it would flow into the East River at the Manhattan Bridge.
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These late 1800s isometric fire risk assessment maps of spots in Montréal are kinda adorable.
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