Art, Aesthetics, Design, And Data at the 2012 Fall AGU
November 29th, 2012 by Robert SimmonI’ll be speaking at the upcoming Fall AGU in San Francsico Tuesday morning—8:15 a.m. December 4, room 104 Moscone South. PA21B. Communication of Science Through Art: A Raison d’Etre for Interdisciplinary Collaboration I. (I know, it’s early, but Blue Bottle coffee is close to Moscone Center.)
Art, Aesthetics, Design, And Data: Reaching The Public Through Scientific Visualization
The primary challenge in science communication is attracting a broad audience while maintaining technical accuracy. Scientific topics are often and reflexively considered boring, dry, or difficult by non-scientists. One way to overcome this hurdle and gain the public’s attention is through beautiful and striking imagery. Imaging techniques borrowed from art and design can generate interest in technical or abstract concepts.
NASA’s Earth Observatory routinely uses imagery to communicate current Earth science research. Earth Observatory designers collaborate with NASA scientists to produce imagery using the principles of data visualization. Curiously, the popularity of images tends to be inversely correlated with the scientific content. Simple photographs and illustrations tend to be viewed more often, and more widely shared, than maps and graphs. However, maps of tree density and melt on the Greenland ice sheet are among the most popular images published on the Earth Observatory. These graphics share some features both with each other and our most-viewed natural-color images: clear, relatable themes, intuitive color palettes, and a clean aesthetic. These similarities may explain their success, and provide a roadmap for future data-rich visualizations that engage viewers while communicating complex science.
Please stop by. In addition, I’ve spent the past few weeks putting together imagery for a NASA/NOAA press conference Wednesday morning about a new, very cool sensor on the Suomi NPP satellite, and I’ll be on-hand to answer questions afterwards.
Earth at Night
Wednesday, 5 December
10:30 a.m.A new cloud-free view of the entire Earth at Night, courtesy of a joint NASA-NOAA satellite
program called Suomi NPP, will be unveiled at the press conference. This image is an order of
magnitude more detailed than the wildly popular earlier Earth at Night image, and reveals new
information scientists are using to study meteorology, natural and human-caused fires, fishing
boats, human settlement, urbanization and more. Scientists will discuss the advancements now
possible with these new images and detail a few examples of the features mentioned above – plus
present images of Earth on moonless nights, lit only by “airglow” and starlight, as well as the
vast difference moonlight makes on the Earth’s surface.Participants:
James Gleason, NASA Suomi NPP project scientist, NASA Goddard, Greenbelt, Maryland, USA;
Christopher Elvidge, lead of the Earth Observation Group, NOAA’s National Geophysical Data Center in Boulder, Colorado, USA;
Steve Miller, senior research scientist and deputy director of the Cooperative Institute for Research in the Atmosphere (CIRA), Colorado State University, Fort Collins, Colorado, USASessions: A54F, IN33C
If you’re interested I’ll be sending out some of my impressions of the meeting via Twitter: @rsimmon hashtag #AGU12
I’d also love to meet any Earth Observatory readers who are attending—I’ll try to hang around after each of these sessions, or you can send a message through the Earth Observatory contact form:
http://earthobservatory.nasa.gov/Contact/
Be sure to pick the “Design Feedback” topic (otherwise it won’t go to me, but to our harried developer), and leave your email address.
Odds & Ends: Batu Tara Volcano Emits a Wispy Plume
June 26th, 2012 by Robert SimmonActive since 2006, Batu Tara continues to puff away. A thin volcanic plume streams northwest from the cloud-shrouded volcano. The Advanced Land Imager (ALI) aboard the Earth Observing-1 (EO-1) satellite collected this natural-color image on June 21, 2012.
NASA image By Jesse Allen and Robert Simmon using EO-1 ALI data.
The Blue Marble at the Information Week Government IT Leadership Forum
May 2nd, 2012 by Robert SimmonI’m giving a talk about the development of the Blue Marble tomorrow at the Information Week Government IT Leadership Forum. In addition to some details of the render, I’ll discuss the history of NASA’s views of the Earth, starting with TIROS-1, continuing through the Apollo Program, interplanetary probes, and the Earth Observing System. If you’re attending and want a copy of the presentation (or are just curious), here it is. If you check the hidden slides you’ll some interesting images I won’t have time to discuss.
Keynote (124 MB)
Powerpoint (124 zip with .ppt file & folder with movies)
PDF (12.5 MB, no movies)
Related Links
The Blue Marble True-color global imagery at 1km Resolution.
My original blog post, Crafting the Blue Marble.
Blue Marble Next Generation.
The Blue Marble Next Generation—A true color Earth dataset including seasonal dynamics from MODIS. (880 kB PDF).
Pictures of Earth by Planetary Spacecraft The Planetary Society.
Tree Biomass Map Featured on Co.DESIGN
February 28th, 2012 by Robert SimmonLast month it was Science Friday, this month it’s Co.DESIGN: NASA Creates Insanely High-Res Map Of America’s Trees, And Offers A Lesson In Information Design. Tim Maly describes our map of tree biomass in the U.S. (based on an exquisite data set from Woods Hole Research Center), and lets me rant a bit about color palettes and data visualization.
Science Friday Explains the Blue Marble
February 7th, 2012 by Robert SimmonLast week, Flora Lichtman of Science Friday put together a short video about the views of Earth NASA has produced over the years. She began with the famous Earthrise photo taken by the crew of Apollo 8, then interviewed me and NASA scientist Gene Feldman. We discussed the differences between photographs and data visualizations, and the craftsmanship that went into the 2002 Blue Marble. There’s even an audio clip from the late Carl Sagan, describing the Pale Blue Dot image from Voyager 1. All spurred by global imagery from the new Suomi NPP satellite.
AGU Fall Meeting, 2011
December 2nd, 2011 by Robert SimmonAlong with half the Earth scientists at NASA, I’ll be at the American Geophysical Union Fall Meeting next week. If you’re interested in getting together to talk scientific visualization, drop a note in the comments, or stop by my poster: Methods to Enhance Climate Change Imagery for Communication (5 MB PDF). It’s got a few before/after examples of imagery from NASA press releases and the IPCC showing a better way of presenting the information (in my opinion).
U11B: Effectively Communicating Climate Science (How to Address Related Issues)
December 5, 2011
8:00 a.m.–12:20 p.m. (good thing I’ll still be on East Coast time).
Halls A-C (Moscone South)
Here’s more info on the session, and the oral presentation in the afternoon.
I’ll also be at Communicating Your Science: Panel and Workshops on Sunday, and at the social media soiree Mondy evening (6:00–8:00 p.m. InterContinental Ballroom C). Hope to see you there!
Crafting the Blue Marble
October 6th, 2011 by Robert Simmon
One of the best surprises of my life was turning on my brand-new iPhone—before it had even been activated—glancing down at the screen, and seeing an image I had made. Apple chose the NASA Blue Marble for the default welcome screen and wallpaper, and I had no idea beforehand.
Here’s how I did it.
In 2002 my colleague Reto Stöckli (now back in Switzerland) was working on a global map of the Earth that was going to blow away all previous examples. A new NASA satellite (Terra) was gathering the first color pictures of the entire Earth, and we wanted to showcase the imagery. Reto put together about 10,000 satellite scenes (each file over 300 MB) collected over 100 days, stripped out the clouds, and created a 43,200-pixel by 21,600-pixel map of the Earth in (this was the hard part, everything I did afterwards was just adding chrome).
Now that we had a source image, we needed to create something evocative, something that would show the potential of the imagery. To us, at least, the obvious choice was to render a few 3D views of the world as it would look from space: echoes of the famous Apollo 17 photograph.
To make the Earth look realistic, or at least how I imagined the Earth would look, I needed to do some work. First of all, the satellite images weren’t usable over deep water (it collects data, but there’s no automated process to detect clouds and correct for the atmosphere), so I needed to add some color into the water. NASA measures chlorophyll in the ocean (a way of monitoring phytoplankton), so I grabbed a month’s worth of that data, colored it blue and green (I looked at individual satellite images to get a sense of what hues to use), and used that map for the ocean. I also had to add a stand-in for sea ice, since it’s impossible to measure chlorophyll beneath a few meters of snow and ice. At least that was simple–I just replaced missing data near the poles with white. In addition to the sea ice, I brightened and reduced the saturation of Antarctica, which was pasted into the original from a different dataset. The combined ocean color and ice look like this:
Throw in a map of clouds stitched together from 200 satellite scenes, and a global topographic map to add some texture in the landscape, and I was ready to bring everything into my 3D software (Electric Image at the time). Wrapping a rectangular image onto a sphere and rendering out images was probably the simplest and fastest part of the entire process. It’s much easier to fine-tune an image with each component of the image rendered separately, so I made individual renders of the land and ocean, specular highlight, clouds, a couple day/night masks, and atmospheric haze (which I never did get quite right). [Click on the image below to download a zip file with each layer as a separate JPEG].
Compositing separate images into a convincing whole is (of course) easier said than done. Even with control of each layer in my image processing software (Photoshop) it took hours of tweaking and re-tweaking transparency, layer masks, hue, saturation, gaussian blur, and curves to get an image that looked like the picture I had in my head. Since it was before adjustment layers were introduced (with which I could have saved all the settings), I have no idea exactly what I did. Making the clouds appear opaque, while remaining white, rather than gray, was by far the hardest part. It was also tricky trying to get the atmosphere to appear most transparent in the center, and thicker and bluer near the edges. Looking at the Photoshop file, I’ve got two atmospheric layers and two cloud layers, each set to different levels of transparency, over a combined land and ocean layer, with sunglint (a specular highlight) off Baja California.
At the time, I had no idea the Blue Marble would be seen by so many people: it was just a way to show off some cool data. It’s based on the hard work of the literally thousands of scientists, engineers, programmers, admin staff, and others here at NASA; especially the MODIS team. I’m glad Steve Jobs seemed to like it, and I’m sad he died so young.
Made on a Mac, of course. Thanks, Steve.
A Few Notes
All the source files are archived on the original Blue Marble page. They’re free to use and modify, but you can’t use them to imply you’re associated with NASA.
We’ve subsequently made a new and improved version of the base maps, the Blue Marble Next Generation. It’s not only twice the resolution (86,400 pixels by 43,200 pixels), but there’s a separate image for each month, so you can see the changing seasons. Reto didn’t make new clouds because it’s a really long and painful process of stitching images together by hand that’s never going to be perfect.
In the existing cloud map some people have noticed a few repeating features that appear photoshopped. They are. There are gaps between orbits near the equator, and there’s no way to fill them with real data. The specular highlight off Baja and the thickness and fuzziness of the atmosphere I based off full-disk GOES images. There’s a weird streak in the clouds near Greenland that’s entirely due to an error on my part, and I have no idea why the shading on the east coast of Greenland is incorrect.
Yes, it’s centered on North America: I’ve spent the vast majority of my life here, and I’m biased. I did, however, make a version centered on South Asia at the same time, as well as a rotating Earth centered on the Equator. I’ve subsequently done a few more versions, including the Pacific Ocean. I’m still not happy with the shading of the atmosphere—anyone know how to simulate Rayleigh scattering in Maya?
Odds & Ends: Volcanoes
September 28th, 2011 by Robert Simmon
During every minute of the day, every day, a volcano is erupting somewhere on Earth. Actually, it’s more like a dozen. Or two. Satellites capture much of this activity, and we try to highlight as many eruptions as possible, but for one reason or another (like clouds) some of them fall through the cracks. Here are a handful from the past few weeks:
Natural-color satellite image of Mount Etna, Italy; acquired on September 18, 2011, by the Advanced Land Imager (ALI). Credit: NASA Earth Observatory/EO-1 Science Team.
Natural-color satellite image of Bezymianny Volcano, Russia; acquired on September 20, 2011 by the Advanced Land Imager (ALI). Credit: NASA Earth Observatory/EO-1 Science Team.
False-color satellite image of Kizimen Volcano, Russia; acquired on September 21, 2011, by the Advanced Spaceborne Thermal Reflection and Emission Radiometer (ASTER). Credit: NASA Earth Observatory and the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.
Natural-color satellite image of Ambrym Volcano, Vanuatu; acquired on September 23, 2011, by the Advanced Land Imager (ALI). Credit: NASA Earth Observatory/EO-1 Science Team.
Odds & Ends: Rabaul Volcano Erupts (in 1999)
September 19th, 2011 by Robert SimmonOnce upon a time Landsat images were expensive (Landsat 7 data was $600 per scene, and the earlier satellites were even pricier) and difficult to find. Now the data—which dates to 1972—is free, and reasonably easy (or at least not painfully difficult) to browse and download from the Global Visualization Viewer, or even the Google Earth Engine (which still has some rough edges).
![](https://webarchive.library.unt.edu/web/20130216231231im_/http://earthobservatory.nasa.gov/blogs/elegantfigures/files/2011/09/rabaul_etm_199911191.jpg)
An ash plume rises from Tavurvur Volcano (part of the Rabaul Volcanic Complex) on November 19, 1999. NASA/USGS Landsat 7.
There are some amazing things buried in the archive, like this natural-color image of an eruption at Rabaul. According to the Global Volcanism Program the activity at the time was “continuous, forceful emissions of thick, light-to-dark gray ash clouds.”
Poke around, and let me know what you find.
Another ISS Timelapse, from Algeria to Ukraine
September 16th, 2011 by Robert Simmon
The photos were taken about 3 seconds apart, from 11:20 to 11:31 UTC, September 3, 2011. Images from the Gateway to Astronaut Photography of Earth.