New Patterns in Mars’s Clouds Revealed by Volunteers

New Patterns in Mars’s Clouds Revealed by Volunteers

2 min read

New Patterns in Mars’s Clouds Revealed by Volunteers

Plot charts showing cloud clusters. Red labels indicate areas of interest.
Volunteers found that clouds in Mars’s atmosphere cluster at certain latitudes and altitudes. White patches in this pair of plots shows where Cloudspotting participants spotted the most clouds (or “arch peaks” in the project lingo). Red labels highlight a few interesting regions: 1) where high-altitude Carbon Dioxide-ice clouds form; 2) water-ice clouds that show a different pattern between day and night; and 3) clouds that form in a cold region over the poles.
Credit: Adapted from Slipski et al. (in press), https://doi.org/10.1016/j.icarus.2023.115777.

The first journal article about clouds identified by participants of the Cloudspotting on Mars project has been accepted for publication and is now available online! The article, “The Cloudspotting on Mars citizen science project: Seasonal and spatial cloud distributions observed by the Mars Climate Sounder” will appear in a special issue of Icarus titled “MRO: 16 Years at Mars”. MRO is the Mars Reconnaissance Orbiter, the Mars Climate Sounder is an instrument on MRO. 

The paper shows several cloud maps, illustrating times and regions where many clouds were identified. The maps reveal several key cloud populations identified in data from the volunteers. The cloud populations include high-altitude CO2-ice clouds, clouds that form near the poles, and dusty-season water-ice clouds. The structure of the clouds follows the pattern of “thermal tides” in the atmosphere, which are global-scale oscillations in temperature. Where temperatures are lower than average, clouds are more common. 

The paper also explains the motivation for the project and describes its setup on Zooniverse. It digs into the details of how cloud identifications made by participants were turned into a cloud catalog using machine learning. “Thank you to all the Cloudspotting on Mars participants for driving this research forward!” said project PI Dr. Marek Slipski, a research scientist at NASA’s Jet propulsion Laboratory.

There’s plenty more to study in this dataset and there are more images online to analyze: the second Mars Year of data is only about 50% done. The data from the second Mars year will help reveal how changing dust conditions affect cloud formation. If you’d like to join the search for clouds in the Martian atmosphere, head to https://www.zooniverse.org/projects/marek-slipski/cloudspotting-on-mars.

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Nov 01, 2023

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Six Rules for Surviving in a Government Organization

Six Rules for Surviving in a Government Organization

8 min read

Six Rules for Surviving in a Government Organization

An interview of Dr. Paul Hertz, a senior leader in the Science Mission Directorate

By: Anna Ladd McElhannon, Summer 2022 Intern, Office of the Chief Scientist

Dr. Paul Hertz is a leader of NASA and had served as the Astrophysics Division Director since 2012 until 2022. Throughout his career, he remained a well‐respected and admired leader who accomplished things that an undergraduate physics student like me could only dream of.  

We met for the first time on a summer day full of sudden, fierce storms. On the way to a quiet meeting place (a video conference meeting, of course), the previously blue sky started pouring rain. I was surprised my laptop still worked when I finally came indoors. Paul, though, was sitting in his home office with a grin on his face, perfectly content to ignore my soaking shirt and dripping hair.  

Considering what I had been told, his easygoing kindness and immediate friendliness was no surprise.  

We started by bonding over our shared love for all things astrophysics. His passion began during the Apollo missions.  

“I remember John Glenn’s flight, and I must have been in second grade. From that point on, I was following everything that happened.” He would watch all the astronauts on TV, and he kept a scrapbook of any newspaper clippings he could find on the space program. “I remember when Armstrong walked and, my parents used to let me stay home from school whenever the astronauts were walking on the Moon.”

His passion for space did not end there. With undergraduate degrees in math and physics from MIT, he proceeded to earn his Ph.D. in astronomy from Harvard. Like most students going into the sciences, he assumed he would become a professor at a university. He realized, though, that professorship wasn’t the life for him. “I made a choice early on when I had young kids and a family, that I was going to have balance, and I wasn’t going to be a world‐famous scientist.”  

As a NASA intern interviewing the Paul Hertz, one of my newfound idols, I found this comment amusing. But the sentiment still stood. “I made the choice not to be a professor but to stay as a government scientist.”

Somehow, though, he was able to become a famous scientist with a prestigious job and still feel satisfied with his personal life. Naturally, I asked him for advice on how to obtain this sort of balance without letting either side of one’s life fall onto the backburner.  

He jumped at the opportunity to teach me these life lessons with a list of six rules he titled: How to Survive in a Government Organization.

6. Train your successor

When he first told me this rule, I applied it to my life. At my university, there is a Society of Physics Students. Every few years or so, we have incredible leadership that wins awards and involves students all over campus. Then the next election rolls around, and all the hard work dissipates. Paul says, “There’s all your institutional knowledge walking out the door every year.”  

“Train your successor” immediately propelled me into planning mode: how can we incorporate a system at my school where the previous leaders sufficiently train their successors every year?

Paul was happy about this application, but it wasn’t what he originally intended by the rule.  

“What I was thinking is that when people who are highly successful at their job start talking about getting another job, their boss says, ‘Sorry, you can’t go. I need you too badly.’”

As someone who has never worked in a similar system, I was appalled. Fortunately, this has not yet happened to him.

“I have been very successful in every job. I’ve had people around me say, ‘What are we going to do without you?… Nobody can replace you.’ I hate hearing that nobody can replace you because it’s patently untrue.”

Sometimes it turns out that the answer to your research is uninteresting. You realize, oh my‐ there was no ‘there’ there.

5. Delegate

“A lot of us competent people think that we can do it better than anybody else. And so we want to hold on to it and do it ourselves because we know it’ll be done best… I used to do everything myself, and I was bad at teaming. You’ll kill yourself that way.”

As the Director of Astrophysics at NASA, I assumed he would have to be the best of the best. Regardless, as he said before, there is always someone who could replace him. While this sounds a little sad, it can come as a relief to someone trying to find peace in their work life.

“People like that want to do the part of their job that they could easily hand off. They are overworked and overwhelmed because they want to do it all themselves. They think they can probably do it better— but that’s not the point.”

As Paul says, the point is to do your job efficiently and not perfectly.  

4.  Don’t Make Work

“A lot of times you get choices.” He began, “We could do it this way or that way, and this way is a lot more work.”  

Most bosses strive for perfection, but Paul understands how to balance perfection with importance. Asking, “How do I do it perfectly?” can cause problems and lead to employees feeling overworked.

[They say] ‘I’m just drowning.’  

[I say] ‘You only have three assignments. You’re making too much work, you’re not delegating, and it’s taking twice as long. Don’t do it this way.’

Paul believes that if you can make your project better by a small amount, but it takes twice the time, the extra mile just isn’t worth it.  “If it increased my chance of surviving surgery, then I would take that extra 10%.”  

If you’re level of perfection is plateauing over time, as it inevitably will, just accept it.

“If you insist on perfection… that’s making work.”

3. Don’t break it

“Don’t break it” was one of the first rules he came up with. It simply means “don’t make it worse.”

It goes hand in hand with “Don’t make work.” Sometimes people can be perfectionists to the point where it impacts their personal life, and sometimes it can impact their professional career as well. That is the secret to finding balance.

“People feel overwhelmed because they’re not practicing these rules… You keep them in mind and then you use them to help prioritize. You must have a feel for what’s the most important thing and then for what’s the most important thing to do very, very well.”

2. Don’t Take It Personally

“You should accept 90% of your projects are going to work.” He asserts, “You should not expect it to always go right. And you should keep it in context when failure happens.”  

That raises the question: what context?

It is difficult to imagine someone as successful as Paul to go through failure. But he has had his fair share of rough times in his own research. “Sometimes it turns out that the answer to your research is uninteresting. You realize, oh my ‐there was no ‘there’ there.”

Even when projects are cancelled, or someone else publishes their results before you can, your time isn’t waisted. There is a certain magic that comes with conducting scientific research, and it makes even failed projects worth the time and effort. “To me, the excitement is the hunt. It’s doing the research. It’s collecting the data and analyzing it. It’s looking for the signal that no one has ever seen before.”

…if something goes wrong, I’m going to hear about it. I want to hear about it from them—I want to hear their view on it and I want us to solve it together.

1. Don’t Surprise the Boss

“Somebody probably told me this rule when I showed up at NASA. You can Google it and find out that it was a rule back in the Roman Empire—or something like that.”

When asked how long he has considered himself a leader, he began at high school. “Every club that I joined, I ended up being president… I ended up being added to the yearbook. When I went to college, I was president of clubs. When I was a researcher, I put together collaborations to do research… I wasn’t a supervisor or boss, but I was a leader; that’s been true at all stops along my career.”

As for the importance of the number one rule, Paul says it’s important to be transparent so that issues can be solved quickly and efficiently. “I don’t want my team to sugarcoat things. I want them to tell me. If something goes wrong, I’m going to hear about it from someone. But, I want to hear about it from them—I want to hear their view on it, and I want us to solve it together.”

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Nighttime on the East Coast

Nighttime on the East Coast

The city lights of the northeastern United States are visible from the International Space Station. The rest of the surrounding land is mostly dark, as is space. At left, part of the orbital lab and a docking port on a Russian space station module are visible.
NASA / Jasmin Moghbeli

While aboard the International Space Station on Oct. 26, NASA astronaut Jasmin Moghbeli captured the city lights of the northeastern United States and major urban areas including Long Island, New York; Philadelphia, Pennsylvania; and Washington, D.C. At the time of this photograph, the orbital lab was 262 miles above Maine. In 24 hours, the space station makes 16 orbits of Earth, traveling through 16 sunrises and sunsets. To find out where the ISS is and when you can see it in your area, check out the Spot the Station site.

Image Credit: NASA/Jasmin Moghbeli

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Monika Luabeya

NASA Flights Link Methane Plumes to Tundra Fires in Western Alaska

NASA Flights Link Methane Plumes to Tundra Fires in Western Alaska

Tundra wetlands are shown in late spring at the Yukon Delta National Wildlife Refuge in Alaska. Scientists are studying how fire and ice drive methane emissions in the Yukon-Kuskokwim Delta, within which the refuge is located.
U.S. Fish and Wildlife Service

Methane ‘hot spots’ in the Yukon-Kuskokwim Delta are more likely to be found where recent wildfires burned into the tundra, altering carbon emissions from the land.

In Alaska’s largest river delta, tundra that has been scorched by wildfire is emitting more methane than the rest of the landscape long after the flames died, scientists have found. The potent greenhouse gas can originate from decomposing carbon stored in permafrost for thousands of years. Its release could accelerate climate warming and lead to more frequent wildfires in the tundra, where blazes have been historically rare.

The new study was conducted by a team of scientists working as part of NASA’s Arctic-Boreal Vulnerability Experiment (ABoVE), a large-scale study of environmental change in Alaska and Western Canada. Researchers found that methane hot spots were roughly 29% more likely to occur in tundra that had been scorched by wildfire in the past 50 years compared to unburned areas. The correlation nearly tripled in areas where a fire burned to the edge of a lake, stream, or other standing-water body. The highest ratio of hot spots occurred in recently burned wetlands.

The researchers first observed the methane hot spots using NASA’s next-generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG) in 2017. Mounted on the belly of a research plane, the instrument has an optical sensor that records the interaction of sunlight with molecules near the land surface and in the air, and it has been used to measure and monitor hazards ranging from oil spills to crop disease.

Methane bubbles pop on the surface of an Alaskan lake being studied by scientists with NASA’s Arctic-Boreal Vulnerability Experiment. A potent greenhouse gas, methane is released in bubble seeps when microbes consume carbon released from thawing permafrost.
NASA/Kate Ramsayer

Roughly 2 million hot spots – defined as areas showing an excess of 3,000 parts per million of methane between the aircraft and the ground – were detected across some 11,583 square miles (30,000 square kilometers) of the Arctic landscape. Regionally, the number of hot spot detections in the Yukon-Kuskokwim Delta were anomalously high in 2018 surveys, but scientists didn’t know what was driving their formation.

Ice and Fire

To help fill this gap, Elizabeth Yoseph, an intern at the time with the ABoVE campaign, focused on a methane-active region located in a wet and peaty area of the massive delta. Yoseph and the team used the AVIRIS-NG data to pinpoint hot spots across more than 687 square miles (1,780 square kilometers), then overlaid their findings on historical wildfire maps.

“What we uncovered is a very clear and strong relationship between fire history and the distribution of methane hot spots,” said Yoseph, lead author of the new study.

The connection arises from what happens when fire burns into the carbon-rich frozen soil, or permafrost, that underlies the tundra. Permafrost sequesters carbon from the atmosphere and can store it for tens of thousands of years. But when it thaws and breaks down in wet areas, flourishing microbes feed on and convert that old carbon to methane gas. The saturated soils around lakes and wetlands are especially rich stocks of carbon because they contain large amounts of dead vegetation and animal matter.


Methane emission hot spots were observed from the air using NASA’s AVIRIS-NG instrument across broad regions of the North American Arctic as part of the agency’s Arctic-Boreal Vulnerability Experiment. Credit: NASA’s Scientific Visualization Studio

“When fire burns into permafrost, there are catastrophic changes to the land surface that are different from a fire burning here in California, for example,” said Clayton Elder, co-author and scientist at NASA’s Jet Propulsion Laboratory in Southern California, which developed AVIRIS-NG. “It’s changing something that was frozen to thawed, and that has a cascading impact on that ecosystem long after the fire.”

Rare but Increasing Risk

Because of the cool marshes, low shrubs, and grasses, tundra wildfires are relatively rare compared to those in other environments, such as evergreen-filled forests. However, by some projections the fire risk in the Yukon-Kuskokwim Delta could quadruple by the end of the century due to warming conditions and increased lightning storms – the leading cause of tundra fires. Two of the largest tundra fires on record in Alaska occurred in 2022, burning more than 380 square miles (100,000 hectares) of primarily tundra landscapes.

More research is needed to understand how a future of increasing blazes at high latitudes could impact the global climate. Arctic permafrost holds an estimated 1,700 billion metric tons of carbon – roughly 51 times the amount of carbon the world released as fossil fuel emissions in 2019.

All that stored carbon also means that the carbon intensity of fire emissions from burning tundra is extremely high, said co-author Elizabeth Hoy, a fire researcher at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “Tundra fires occur in areas that are remote and difficult to get to, and often can be understudied,” she noted. “Using satellites and airborne remote sensing is a really powerful way to better understand these phenomena.”

The scientists hope to continue exploring methane hot spots occurring throughout Alaska. Ground-based investigation is needed to better understand the links between fire, ice, and greenhouse gas emissions at the doorstep of the Arctic.

The study was published in the journal Environmental Research Letters.

News Media Contacts

Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-0307 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov

Written by Sally Younger

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Naomi Hartono

JPL Engineers Put Their Skills to the Test With Halloween Pumpkins

JPL Engineers Put Their Skills to the Test With Halloween Pumpkins

3 min read

JPL Engineers Put Their Skills to the Test With Halloween Pumpkins

Pumpkin carving reaches new heights during the annual competition, where spacecraft-building engineers mix ingenuity and creativity for some spectacular results.

When mechanical engineers accustomed to building one-of-a-kind spacecraft turn that focus to pumpkins, the results can be hauntingly good. The annual Halloween pumpkin-carving contest at NASA’s Jet Propulsion Laboratory in Southern California may be all in good fun, but to the 200 or so participants, it’s also serious business. Power tools are involved.

JPL employee with a pumpkin carved guitar
Pumpkins can even be turned into musical instruments during JPL’s annual pumpkin-carving contest.
Credit: NASA/JPL-Caltech

Dioramas can incorporate flying-saucer gourds, guitar-strumming pumpkins, and squashes that bear a striking resemblance to celebrities or famous deep space missions. Participants carve them on their breaks – 60 minutes of frantic sawing and drilling that sends vegetable detritus flying on a patio at JPL. (This year, one team had a minute-by-minute spreadsheet to make sure they stayed on schedule.)

Carving complete, engineers race into two conference rooms in a nearby building to install the pumpkins into displays of up to 4 feet by 4 feet square. Non-pumpkin materials – motorized parts, lights, often elaborate props, and painted backdrops – can be prepared beforehand.

“It’s not really a pumpkin-carving contest in the traditional sense. It’s a pumpkin art installation event with very few rules,” said Peter Waydo, who manages JPL’s spacecraft mechanical engineering section and emcees the carving. He’s been participating since the event began in 2011. “This is something everybody looks forward to every year – it just lets their creative juices flow completely unrestricted from the rules and processes we’re normally bound by.”

For the 2023 event, more than two dozen teams produced displays. They ranged from a Barbenheimer-themed “atomic makeover” featuring a mirrored disco-ball pumpkin to a space octopus emerging from a Jupiter-colored pumpkin to greet NASA’s Europa Clipper spacecraft, and there were references to Taylor Swift, “Dune,” and the agency’s James Webb Space Telescope. All of the creations were on display for fellow engineers, scientists, technicians, and other JPL employees to admire.

Of course, it wouldn’t be a competition without winners. A panel of judges named the year’s top six, with three from each of the two sections of engineers that participate. A display re-creating favorite items from JPL’s museum and an interactive Indiana Jones-themed display both won first. Second went to the Deep Squash Network – a spoof on NASA’s Deep Space Network, which enables spacecraft to communicate with Earth – and to a creation involving a descendent of NASA’s Ingenuity Mars Helicopter on the fictional planet Arrakis. The two third-place winners were an eyeball-pumpkin that resembled Las Vegas’ Sphere and the Barbenheimer display.

The event comes on a special day for the lab, which, founded Oct. 31, 1936, was celebrating its 87th birthday.

Additional photos from the pumpkin competition are available on JPL’s website; video is available on JPL’s Vimeo account.

Caltech in Pasadena, California, manages JPL for NASA.

News Media Contact

Melissa Pamer
Jet Propulsion Laboratory, Pasadena, Calif.
626-314-4928
melissa.pamer@jpl.nasa.gov

2023-158

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Oct 31, 2023

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Anthony Greicius