For the first time in 30 years, a crop of new clouds will enter the canon of cloud varieties recognized by meteorologists all over the world. This is also a good time to talk about climate change.

"The official International Cloud Atlas has just gained a new species: Volutus is a tube-shaped mass that rotates slowly around its horizontal axis," according to an article by Clive Cookson. The International Cloud Atlas has been the definitive reference of cloud varieties for meteorologists since 1896. The new edition is the first update to the Atlas in 30 years.
"The revised edition of the atlas, published this week by the World Meteorological Office, describes Volutus as 'an example of an undular bore'," adds Cookson of one of the additions to the Atlas sure to excite weather observers, both amateur and professional.
But wait, there's more! A citizen science movement also successfully advocated for the inclusion of the Asperitas cloud in the Atlas. Another newcomers include "Homogenitus (clouds such as aircraft contrails resulting from human activity), Flumen (beaver’s tail clouds associated with severe thunderstorms) and Flammagenitus (caused by convection over forest fires)."
The article places the addition of these new clouds into the context of conversations about climate change. Scientists "emphasise the need to understand better the central role that clouds play in weather and climate," writes Cook.
The Financial Times article might be behind a paywall for some readers. More coverage of the new edition of the International Cloud Atlas is available at treehugger, Wired, and the BBC.
FULL STORY: New clouds appear on scientists’ horizons

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning
SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs
The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

Trump Approves Futuristic Automated Texas-Mexico Cargo Corridor
The project could remove tens of thousands of commercial trucks from roadways.

Austin's First Single Stair Apartment Building is Officially Underway
Eliminating the requirement for two staircases in multi-story residential buildings lets developers use smaller lots and more flexible designs to create denser housing.

Atlanta Bus System Redesign Will Nearly Triple Access
MARTA's Next Gen Bus Network will retool over 100 bus routes, expand frequent service.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Smith Gee Studio
City of Charlotte
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
US High Speed Rail Association
City of Camden Redevelopment Agency
Municipality of Princeton (NJ)