Mapping Global Sea Levels at Even Finer Resolution

Published on by Jonathan Crowe

Launched in December 2022, the Surface Water and Ocean Topography (SWOT) satellite measures ocean surface topography—i.e., sea surface height. It recently completed its first full 21-day science orbit, which is represented in the above animated globe.

The animation shows sea surface height anomalies around the world: Red and orange indicate ocean heights that were higher than the global mean sea surface height, while blue represents heights lower than the mean. Sea level differences can highlight ocean currents, like the Gulf Stream coming off the U.S. East Coast or the Kuroshio current off the east coast of Japan. Sea surface height can also indicate regions of relatively warmer water—like the eastern part of the equatorial Pacific Ocean during an El Niño—because water expands as it warms.

Sea surface height has been measured by earlier satellites (previously); SWOT does so at a much greater level of detail.

Middle-earth in 3D

Published on by Jonathan Crowe
Screenshot of Middle-earth 3D map showing an oblique view of Gondor and the Bay of Belfalas.
Screenshot

Micah Vander Lugt’s Esri-powered 3D map of Middle-earth is a departure from the usual fantasy-style map in that it uses an elevation layer. It’s a fascinating perspective, and lots of fun to play with. Though not without quibbles: for example, the labels and 3D rendering don’t always agree with each other, and I’m having a hard time imagining either Minas Tirith or Caras Galadhon as 25-30 km across. [Maps Mania]

A Map of New York City Neighbourhoods

Published on by Jonathan Crowe

Back in December 2022, the New York Times asked readers to map their neighbourhoods. They got 37,000 responses; combined with feedback from council members, community boards and another survey, the result is a detailed interactive map of New York City neighbourhoods as seen by New Yorkers that the Times is keeping behind its paywall. The accompanying article talking about how the map came to be and what it reveals, is a bit more accessible (see also archive link). [LanguageHat]

Bad Maps, Kindness and Empathy

Published on by Jonathan Crowe

The 2023 iteration of the 30 Day Map Challenge is coming up, and Daniel Huffman has some thoughts about the day four prompt (“a bad map”) and making room for kindness in the mapmaking community.

It’s fun to play with those things that you’re not supposed to do! But, these are also same kinds of choices that might be made by someone who’s new to our community, and who isn’t as experienced. I’ve seen plenty of students who start out their careers by producing work that is very similar to the material that my colleagues produced when they were prompted to make “a bad map.”

Imagine, then, being one of those novices and seeing someone out there make something in the same style as you, and then see people laugh at it. Might you learn a useful lesson about design? Maybe. But there’s a kinder and more effective way to teach the next generation, isn’t there? […]

It’s no secret that I think our community has had a history of toxic critique and gatekeeping. I’ve written about it here, and talked about it at NACIS. This year, when prompted to make “a bad map,” I invite you to think of “bad” in more ways than just “what a beginner would make.”

Previously: Thirty Day Map Challenge; ‘One Bad Map a Day in February’.

GPSJam Maps GPS Interference

Published on by Jonathan Crowe
Screenshot of GPSJam website
GPSJam (screenshot)

GPS Jam, created by John Wiseman, is an online map of GPS interference, updated daily, based on GPS accuracy information reported by aircraft. It’s not necessarily a map of where GPS is being deliberately jammed, but when you look and see that the hotspots are the eastern Mediterranean, western Russia and the Baltics, well. Active war zones (e.g. Ukraine) are blank: this map is based on civilian aircraft data and those are no-go areas.

Mapping Two Solar Eclipses

Published on by Jonathan Crowe
Map of the path of the annular eclipse on October 14, 2023, across the American Southwest.
Michael Zeiler, GreatAmericanEclipse.com

Two upcoming solar eclipses in North America—the annular eclipse on October 14, and the total eclipse on April 8, 2024—are the subject of numerous eclipse maps that track the path of totality and its duration along that path.

NASA’s Solar Eclipse Explorer currently focuses on this month’s annular eclipse, with paths of the 2017 and 2024 eclipse for comparison. [Maps Mania]

The Eclipse Company has separate maps for this month’s annular eclipse and next April’s total eclipse: these maps include data for locations along the path, including time, duration, the sun’s altitude and chance of clouds based on historical weather data. [PetaPixel]

The last time I went looking for eclipse maps, back in 2017, there was a website called GreatAmericanEclipse.com, which was the most recent of the websites showcasing the eclipse maps of Michael Zeiler. It’s still very much a going concern, with maps covering North America, individual U.S. states, and detailed maps of the path itself. These are static maps rather than the above interactive maps, but there are a lot of them, and not just for this month’s annular and next year’s total eclipse: there’s a fair bit of historical (and future!) eclipse maps there too.

Update 10:20 PM: Andy Woodruff’s scrolling map of the 2024 eclipse.

Previously: An Almost-Too-Late Roundup of Historical and Unusual Eclipse Maps; Mapping the August 2017 Solar Eclipse; Another Solar Eclipse Website; Michael Zeiler’s Solar Eclipse Map Website; Eclipse Maps.

‘Pseudo-Anachronistic’ Elements in Fantasy

Published on by Jonathan Crowe

This blog post from independent roleplaying games creator Periapt Games looks at the phenomenon of what’s called “pseudo-anachronistic elements” in fantasy fiction (and fantasy roleplaying games): technologies that have no business existing in the era being portrayed. Of course maps are mentioned, and at length—otherwise why would I mention it here? “Despite being ubiquitous in the modern day, reading a top-down map or even understanding what a map means is a learned skill, and not trivially so. Don’t expect pre-industrial people to be able to purchase a map, read one, or know what one is.” This is precisely what I was trying to say in my 2019 Tor.com article, “Fantasy Maps Don’t Belong in the Hands of Fantasy Characters”; it’s gratifying to see someone else making the same argument.

Previously: Fantasy Maps Don’t Belong in the Hands of Fantasy Characters.

The Return of the Map Projection Trading Cards

Published on by Jonathan Crowe
Map projection trading cards (Daniel Huffman)
Daniel Huffman

Daniel Huffman’s map projection trading cards are making a comeback. “While my colleagues and I did our best to let everyone know about these cards, some people inevitably missed out during the first print run. I’ve had many people contact me asking and hoping to get their hands on a pack or two. So, I am bringing them back for one final print run via Kickstarter,” writes Huffman. “I hope you’ll share this widely, so that we don’t miss anyone this time around, as this is almost certainly the last time these cards will be printed.”

Previously: Map Projection Trading Cards.

The CBC on Inaccessible Flood Maps

Published on by Jonathan Crowe

As the CBC’s evening news program The National reports, flood maps can be incredibly hard to find, with even municipal maps requiring an NDA to view in some cases. Now this story focuses on Halifax, Nova Scotia in the wake of flash flooding this summer; the situation elsewhere in Canada may be quite different (Quebec’s flood maps, for example, are available online, though only in French).

Man Dies After Driving Across Collapsed Bridge, Family Sues Google

Published on by Jonathan Crowe

The family of a man who died after driving off a collapsed bridge is suing Google; they allege that despite multiple reports from users, Google Maps continued to mark the bridge in North Carolina, which partially collapsed in 2013, as passable, directing him and other drivers across it. The family is also suing local companies for failing to maintain the bridge or put up barricades and hazard warnings.

Edney on Sleigh’s Anciente Mappe of Fairyland

Published on by Jonathan Crowe
Bernard Sleigh, An Anciente Mappe of Fairyland (1917)
Bernard Sleigh, “An anciente mappe of Fairyland: newly discovered and set forth,” ca. 1917. Map illustration, 147 × 39 cm. Norman B. Leventhal Map Center, Boston Public Library.

Matthew Edney has a post on Bernard Sleigh’s Anciente Mappe of Fairyland, about which we have seen much already; Edney’s look is deeper and more analytical. “Of special interest to me is how, despite his overtly anti-modernist subject matter and style, Sleigh nonetheless gave structure and system to his fictive panorama by giving it the trappings of normative maps and of realistic imagery more generally.”

Previously: An Anciente Mappe of Fairyland; North of Nowhere: The Osher’s Fantasy Map Exhibition.

Behind the Scenes of the ‘Barbie’ Map

Published on by Jonathan Crowe

The Wall Street Journal provides some background to the map that got the Barbie movie into trouble in Vietnam, and the steps movie studios are increasingly taken to ensure that on-screen cartography doesn’t run afoul of other countries’ sensitivities. How to avoid a repeat of the Barbie controversy? “One proposal executives have discussed: having an employee inside the clearance department review every map featured on screen for potential problems or offenses. That’s a tough proposition, one employee noted, since the ‘Barbie’ map wasn’t processed by the Los Angeles team as a normal map at all.” (Link may be paywalled; see also the Apple News+ link—which granted is also paywalled.)

Previously: Philippine Censors Want ‘Barbie’ Blurred, Not Banned; The Nine-Dash Line Gets ‘Barbie’ Banned in Vietnam.