The Brief

Despite the fact that clouds envelop two-thirds of the planet at any given time, transport water on the wind, and shield the Earth from the sun, surprisingly little is known about how climate change affects them. Atmospheric scientists are not yet certain, for instance, whether rising temperatures will lead to more or fewer clouds, or make them better or worse at reflecting the heat of the sun.

To help unravel those mysteries and others, the European Space Agency and the Japanese Aerospace Exploration Agency lofted a satellite into orbit last week aboard a SpaceX rocket. The Earth Cloud Aerosol and Radiation Explorer, known as EarthCARE, will uncover the inner workings of clouds as well as how they, and tiny airborne particles called aerosols, shape — and are shaped by — climate change.

“Clouds are the number one cooling blanket we have on the planet,” said Pavlos Kollias, an atmospheric scientist from Stony Brook University who has been supporting the EarthCARE mission since 2008.

A cloud’s effect on temperature greatly depends on the height where it happens to float. Low-level formations, such as the blanket-like stratocumulus, do a particularly good job of keeping the planet cool by reflecting most of the sunlight that strikes them. Since they fly so close to the ground, their ambient temperatures are similar to those of the landscape below, and they transfer most of the Earth’s heat to space rather than holding it in the atmosphere.

The cooling effect this provides is so pronounced, Kollias said, that without it the planet would be 5 degrees Celsius warmer — or 9 degrees Fahrenheit.*

Though the impact clouds have on the planet in the present is well known, scientists are uncertain about how that may evolve as temperatures rise. “If you perturb the system by adding temperature,” Kollias said, “we don’t know how the clouds will respond.” They could become more common and more dense, thereby mitigating climate change in a minor way, or they could become less common and less dense, speeding climate change along.

High-altitude clouds, like the wispy cirrus, for instance, are typically made of tiny ice crystals and often trap the Earth’s heat more effectively than they block the sun’s light, both of which seems to make them more sensitive to warming. Aerosols, small particles like sulfates and sea salts, introduce further complications by impacting climate both directly, by reflecting sunlight, and indirectly, by acting as the nuclei around which clouds condense. Efforts to clean up industrial emissions are reducing airborne aerosols, with pronounced effects on climate.

All of this makes cloud dynamics one of the greatest sources of uncertainty in climate models, something EarthCARE aims to help resolve.

EarthCARE’s cloud profiling radar allows scientists to observe the internal structure of clouds, providing detailed insights into their vertical structure and velocity, particle size distribution and water content.

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Kollias is eager to work with the data that will begin beaming down from the new satellite later this year. The mission carries an instrument never before used in space: a cloud profile radar. The device will emit successive bursts of radio waves, measuring the signal reflected by the vapor below. This information will help researchers better understand the size and circulation of the countless droplets that comprise a cloud. EarthCARE will also map the surface profile of clouds and aerosols with a method known as lidar that reflects a low-power laser off these atmospheric formations. Those measurements coupled with images captured by the spacecraft will provide a three-dimensional view of the ubiquitous pillows and blankets of condensation drifting through the sky.

The European Space Agency named EarthCARE its sixth Earth Explorer mission back in 2001. Though delays plague seemingly every satellite, EarthCARE faced notable and protracted setbacks due to the complexity and sophistication of the radar and lidar systems. It reached a point where, Kollias said, some outside the mission began to doubt whether the nearly $900 million satellite would ever reach the launchpad. Yet “nobody gave up,” Kollias said. “Everybody kept working.”

All that made last week’s successful launch a particularly emotional affair.

“Personally, I was very nervous in the moment,” Kollias said of the launch. But he added that the prolonged process has inadvertently given the scientific community more time to prepare to work with EarthCARE’s data. Numerical models have improved dramatically in the 23 years between selection and launch, researchers have more computing power available to them than ever before, and machine learning now allows big data to be digested with comparative ease.

The intervening years have also given the world a taste of the climate disasters yet to come. As a result, an added urgency drives the desire to resolve the uncertainties clouds introduce into climate models, so scientists can look out with finer eyes to tell us what the decades ahead hold.

Topline:

The backstory: Once a year, dozens of sound artists converge on the hill with views of the harbor below to perform their audio art, which can range from serene to “beautifully weird.”

What to expect: This year includes a performer bending a bar of tin with his bare hands to get it to emit what’s called a "tin cry" and synthesizer-based soundscapes that take inspiration from both the ocean and the industrial space below.

When to go: Soundpedro is free and lasts from 7-10 p.m. Saturday.

More info at the Soundpedro website.

When I first came to the states many years ago, if I’d mentioned Arsenal, people would have thought I was referring to the U.S. military or something. But all that has changed. You can now watch U.K. premier league games in sports bars, most kids play soccer, and Ted Lasso is must-watch TV.

To which I say — welcome. We English are proud of the fact that soccer began with us more than 150 years ago. And every World Cup, we think, surely this will be the year that the trophy returns home — the year that we’ll win!

Queen Elizabeth II awarding the Jules Rimet World Cup Trophy to Bobby Moore after England won the 1966 World Cup final at Wembley.

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I mean it did happen … once… back in 1966. It’s such a long time ago the game was televised in black and white and shillings were still being used. My mother was nine months pregnant with my brother, and got so excited jumping up and down she went into labor and had him the next day. World Cup Willie they called him. Actually his name is David, but never mind.

Since then, every four years everyone in the U.K. watches the games with bated breath. And then something stupid will happen, and we’ll lose, like that time in 1998 when David Beckham (who played for England before he came to L.A. Galaxy) lost his temper and was sent off, and we’ll sit there, gloomy and despondent. I know because I was there in my friend’s living room in London, gloomy and despondent, thinking just once, just once, maybe could we please have a win?

David Beckham's infamous 1998 red card in the England vs. Argentina game.

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The last World Cup, I went to Ye Olde Kings Head in Santa Monica to watch England play. At 7 a.m. it was full of people already on their third pint of beer. And when the team got through to the next round, the gentle men of England ran outside the pub, whipped off their shirts and started weaving through traffic, singing football chants and acting like hooligans. I really couldn’t decide if I was embarrassed or if it felt like home.

Anyway, this time, since I’m now an American citizen, it’s in my contract that I need to support Team USA. I’m a dual citizen, though, so I’ll also be cheering for England. If by any chance Team USA and England play each other, my two selves will be watching, with a cup of tea in one hand, and a cold brewski in the other, and the polarities will explode, or something. But what will probably happen is that both teams will be eclipsed by Brazil or France playing the beautiful game… beautifully. Cheers.

Stereotypes die hard. Los Angeles actually has a massive public transport system serving the region, which boasts the world's longest light rail line in the form of the 58-mile long Line A (or for old-timers, the Blue line) and tons of buses.

But if you opt to engage in the gladiator sport that is L.A. driving — a reminder you're going to need to park that thing too.

Here's where we come in.

Curb parking

No surprise, our curbs are painted in different colors with different restrictions.

Heads up: Red, White and Blue curb regulations are in effect 24/7, unless otherwise noted. And additional restrictions could apply if posted on a sign, according to the Los Angeles Department of Transportation.

Red Curbs — Nope

• No stopping, parking or standing 
• Doesn't matter if there's a driver or passenger inside the car

Yellow Curbs — Depends

• For commercial loading only
• Vehicles with a commercial license plate can park here, but only if they are actively loading or unloading stuff, for a maximum of 30 minutes
• Restrictions are in effect Monday through Saturday 7:00 a.m. to 6:00 p.m. unless otherwise posted on signs
  
  • That means you can park in yellow zones after 6:00 p.m. with no restrictions, unless otherwise noted
• Vehicles without a commercial license plate may load and unload passengers or baggage, for a maximum of 5 minutes

White Curbs — You gotta get going fast

• Passenger loading only for a maximum of 5 minutes

Blue Curbs (Accessible Parking Zones) — If you have the placard

Those famous 'clashing' L.A. parking signs

Before we move on to other facets of parking in Los Angeles. We want to take a moment to address a persistent complaint about confusing parking signs that are often clustered together.

When you encounter this phenomenon, we suggest patience. You don't need a degree in math, probably just a pen and paper.

For the sign in the video, here's when you can and cannot park (we think):

• No parking on Mondays between 10 a.m. and 1 p.m. because of street cleaning
  
  • all other days you can park between 10 a.m. and 1 p.m., but please be aware there's a 2 hour parking limit
• Every night, you can stop your vehicle for 10 minutes only for passenger loading between 10 p.m. to 3 a.m.
  
  • If the curb is not white, then you can park outside of the 10 p.m. to 3 a.m. window without that restriction
• You can park for 2 hours:
  
  • Between Tuesdays and Saturdays between 8 a.m. and 8 p.m.
  • But remember on Mondays, parking is prohibited from 10 a.m. to 1 p.m. because of street cleaning
  • On Sunday, you can park for 2 hours between 11 a.m. and 8 p.m.

Heads up: When in doubt, find somewhere else to park.

Meter parking

LADOT says it operates some 38,000 parking meters in the city. Sometimes it feels as if there are as many meter enforcement people out there.

There are different ways to pay — coins, credit cards, and via text or an app at a number of meters.

Heads up: If a meter is broken, meaning it cannot accept coins or a credit card, then you can only park for free up to the posted time limit.

Other no-no's

Here are several other no parking rules, pulled from this list from LADOT

• In alleys, except for to unload things or passengers
• Within 15 feet of a fire station driveway or fire hydrant
• No double parking
• In a center median strip, unless signs indicate otherwise

Parking on a federal holiday

Certain city parking regulations are not enforced on national holidays. They are enforced on state holidays.

• Time Limit
• Parking meters
• No Parking with specified days and times only
• No stopping with specified days and times only
• Street sweeping (also not enforced the day after Thanksgiving and after Farmworkers Day)

If a national holiday falls on a Saturday it will be observed by the city on a Friday. If it falls on a Sunday it will be observed by the city on a Monday. Parking restrictions are not enforced on both the holiday and the observed holiday.

You may know about Union Station as an L.A. landmark or as a transportation hub — but how much do you know about its rich architectural history?

To foster that interest and knowledge, Metro created a series of public tours of the station this spring.

“There's so much that you might just walk by without really having the opportunity to delve deeply into,” said Zipporah Lax Yamamoto, deputy executive officer of Metro’s art program. “[The tours are] a really wonderful opportunity to be able to spend time with the station, learn more about the historic landmark, which belongs to all of us.”

Union Station in Los Angeles

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Architectural style

It’s called Union Station because when it opened in 1939, it connected the Southern Pacific and Union Pacific railroads with the Atchison, Topeka and Santa Fe railway.

While it was designed by father-and-son team Donald and John Parkinson, the architects who gave us L.A. City Hall, its style is very different. Union Station’s interior and exterior mixes art deco, Spanish colonial and other styles into a hybrid dubbed Mission Moderne.

As you begin the tour, entering from Alameda Street, tour guides ask you to look up at the decorative elements in the high ceilings. The beams and geometric patterns may look like wood — but they’re actually just painted to look that way.

A community destroyed by development

Along the way, the tour gives background on pieces created more than 30 years ago. These include "City of Dreams/River of History" by artists May Sun and Richard Wyatt in 1995. Sun’s piece uses remnants of the Chinese American homes torn down to build the station, a reference to the high price that community paid for this building’s construction.

Detail from "City of Dreams/River of History," created by artists May Sun and Richard Wyatt at Union Station.

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“It was an enormous price. Chinatown ceased to exist in this area. … The families that lived here during that time are still around and maintain archives of that time period and the original Chinatown here, and we've worked with those families to have those objects on display,” Lax Yamamoto said.

Meanwhile, Wyatt’s large-scale mural includes the face of a Chinese man, along with nine other people of different races, ethnicities and ages; a nod to the diversity of the city since its founding in the late 1700s.

There are also stops to see new art installed for the World Cup.

A mural by Richard Wyatt at Union Station

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There are three tours left in the series but the RSVPs have reached their maximum; however, Lax Yamamoto said Metro will decide whether to continue them based on what people have thought about the tours.

Meanwhile, Union Station is set to swell with people in the next couple of months as L.A. hosts World Cup games. The station is the site of an official FIFA-sponsored Fan Zone from June 25-28.