Alkanes, An Important Component Of Fuels For Combustion Engines And An Important Class Of Urban Trace

Alkanes, an important component of fuels for combustion engines and an important class of urban trace gases, react via another reaction pathways than previously thought. These hydrocarbons, formerly called paraffins, thus produce large amounts of highly oxygenated compounds that can contribute to organic aerosol and thus to air pollution in cities. The results of this interdisciplinary work provide crucial information about oxidation processes both in combustion engines and in the atmosphere.

Alkanes, an important component of fuels for combustion engines and an important class of urban trace gases, react via another reaction pathways than previously thought. These hydrocarbons, formerly called paraffins, thus produce large amounts of highly oxygenated compounds that can contribute to organic aerosol and thus to air pollution in cities. An international research team has now been able to prove this through laboratory experiments with state-of-the-art measurement technology at the University of Helsinki and the Leibniz Institute for Tropospheric Research (TROPOS) in Leipzig.

The results of this interdisciplinary work provide crucial information about oxidation processes both in combustion engines and in the atmosphere – with direct implications for engine efficiency and the formation of aerosols, especially in cities, the research team writes in the journal Communications Chemistry, an open-access journal published by the Springer-Nature publishing group.

Oxidation processes play a major role both in the atmosphere and in combustion. A chain reaction called autoxidation is enabled by high engine temperatures. But it also acts as an important source of highly oxygenated compounds in the atmosphere that form organic aerosol, as researchers from Finland, Germany and the USA demonstrated in 2014. Autoxidation is one reason for ageing processes of organic compounds by oxygen from the air. It contributes to the spoilage of food and wine.

Read more.

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Rapid global heating is hurting farm productivity, study finds
Research shows rising temperatures since 1960s have acted as handbrake to agricultural yield of crops and livestock

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4 years ago
NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

Dr. Yolanda Shea is a climate scientist at NASA's Langley Research Center. She’s the project scientist for the CLARREO Pathfinder (CPF) mission, which is an instrument that will launch to the International Space Station to measure sunlight reflected from Earth. It will help us understand how much heat is being trapped by our planet’s atmosphere. Her mission is designed to help us get a clearer picture than we currently have of the Earth’s system and how it is changing

Yolanda took time from studying our home planet to answer questions about her life and career! Get to know this Earth scientist:

What inspired you to study climate science?

Starting in early middle school I became interested in the explanations behind the weather maps and satellite images shown on TV. I liked how the meteorologists talked about the temperature, moisture, and winds at different heights in the atmosphere, and then put that together to form the story of our weather forecasts. This made me want to learn more about Earth science, so I went to college to explore this interest more.

The summer after my junior year of college, I had an internship during which my first assignment was to work with a program that estimated ocean currents from satellite measurements. I was fascinated in the fact that scientists had discovered a way to map ocean currents from space!

Although I had learned about Earth remote sensing in my classes, this was my first taste of working with, and understanding the details of, how we could learn more about different aspects of the physical world from satellite measurements.

This led to my learning about other ways we can learn about Earth from space, and that includes rigorous climate monitoring, which is the area I work in now.

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

What does a day in your life look like?

Before I start my workday, I like to take a few minutes to eat breakfast, knit (I’m loving sock knitting right now!), and listen to a podcast or audio book. Each workday really looks different for me, but regardless, most days are a combination of quieter moments that I can use for individual work and more interactive times when I’m interfacing with colleagues and talking about project or science issues. Both types of work are fun in different ways, but I’m glad I have a mixture because all researchers need that combination of deep thinking to wrap our minds around complex problems and also time to tackle those problems with others and work on solving them together.

When do you feel most connected to Earth?

I’ve always loved sunsets. I find them peaceful and beautiful, and I love how each one is unique. They are also a beautiful reminder of the versatility of reflected light, which I study. Sitting for a moment to appreciate the beauty and calm I feel during a sunset helps me feel connected to Earth.

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

What will your mission – CLARREO Pathfinder – tell us about Earth?

CLARREO Pathfinder (CPF) includes an instrument that will take measurements from the International Space Station and will measure reflected sunlight from Earth. One of its goals is to demonstrate that it can take measurements with high enough accuracy so that, if we have such measurements over long periods of time, like several decades, we could detect changes in Earth’s climate system. The CPF instrument will do this with higher accuracy than previous satellite instruments we’ve designed, and these measurements can be used to improve the accuracy of other satellite instruments.

How, if at all, has your worldview changed as a result of your work in climate science?

The longer I work in climate science and learn from the data about how humans have impacted our planet, the more I appreciate the fragility of our one and only home, and the more I want to take care of it.

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

What advice would you give your younger self?

It’s ok to not have everything figured out at every step of your career journey. Work hard, do your best, and enjoy the journey as it unfolds. You’ll inevitably have some surprises along the way, and regardless of whether they are welcome or not, you’re guaranteed to learn something.

Do you have a favorite metaphor or analogy that you use to describe what you do, and its impact, to those outside of the scientific community?

I see jigsaw puzzles as a good illustration of how different members of a science community play a diverse set of roles to work through different problems. Each member is often working on their own image within the greater puzzle, and although it might take them years of work to see their part of the picture come together, each image in the greater puzzle is essential to completing the whole thing. During my career, I’ll work on a section of the puzzle, and I hope to connect my section to others nearby, but we may not finish the whole puzzle. That’s ok, however, because we’ll hand over the work that we’ve accomplished to the next generation of scientists, and they will keep working to bring the picture to light. This is how I try to think about my role in climate science – I hope to contribute to the field in some way; the best thing about what I have done and what I will do, is that someone else will be able to build on my work and keep helping humanity come to a better understanding of our Earth system.

What is a course that you think should be part of required school curriculum?

Time and project management skills – I think students tend to learn these skills more organically from their parents and teachers, but in my experience I stumbled along and learned these skills through trial and error. To successfully balance all the different projects that I support now, I have to be organized and disciplined, and I need to have clear plans mapped out, so I have some idea of what’s coming and where my attention needs to be focused.

Another course not specifically related to my field is personal financial management. I was interested in personal finance, and that helped me to seek out information (mainly through various blogs) about how to be responsible with my home finances. There is a lot of information out there, but making sure that students have a solid foundation and know what questions to ask early on will set them to for success (and hopefully fewer mistakes) later on.

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

What’s the most unexpected time or place that your expertise in climate science and/or algorithms came in handy?

I think an interesting part of being an atmospheric scientist and a known sky-watcher is that I get to notice beautiful moments in the sky. I remember being on a trip with friends and I looked up (as I usually do), and I was gifted with a gorgeous sundog and halo arc. It was such a beautiful moment, and because I noticed it, my friends got to enjoy it too.

NASA Spotlight: Earth Climate Scientist Dr. Yolanda Shea

Can you share a photo or image from a memorable NASA project you’ve worked on, and tell us a little bit about why the project stood out to you?

I absolutely loved being on the PBS Kids TV Show, SciGirls for their episode SkyGirls! This featured a NASA program called Students’ Clouds Observations On-Line (S’COOL). It was a citizen science program where students from around the globe could take observations of clouds from the ground that coincided with satellite overpasses, and the intention was to help scientists validate (or check) the accuracy of the code they use to detect clouds from satellite measurements. I grew up watching educational programming from PBS, so it was an honor to be a science mentor on a TV show that I knew would reach children across the nation who might be interested in different STEM fields. In this photo, the three young women I worked with on the show and I are talking about the different types of clouds.

To stay up to date on Yolanda's mission and everything going on in NASA Earth science, be sure to follow NASA Earth on Twitter and Facebook.

🌎 If you're looking for Earth Day plans, we have live events, Q&As, scavenger hunts and more going on through April 24. Get the details and register for our events HERE.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.


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4 years ago
I Don’t Know What Else To Do

i don’t know what else to do

3 years ago

Schools: environmental education and computer games in learning

Why is school important for teaching kids about climate change and how can our game help with that?

Everything children learn at school allows them to, one day, choose the future they want to live in. Schools also teach children how to put themselves to the test. The child strives to achieve a goal and is rewarded based on what has been done. In this way they understand that no goal is achieved without their commitment. Additionally, it is at school that the child lays the foundations to define the adult he/she will one day become.

The importance of environmental education

Children and young people have a growing awareness of the threat that climate change represents for our world and for their future, as demonstrated in recent months by the youth movement for the climate born thanks to Greta Thunberg. These children, if properly educated and prepared, can play a really important role in the fight against the environmental crisis as they would be able to influence the decisions of their parents. According to the study Children can foster climate change concern among their parents, published by a group of sociologists and ecologists from North Carolina state university in the journal Nature Climate Change.

This new study reveals that educating children about the dangers of climate change raises their parents' concerns about the environmental emergency. According to the researchers, environmental education in schools, especially about the climate, is essential to raise awareness among young people and, consequently, their parents. "There is a large body of work showing that children can influence parental behavior and positions on environmental and social issues - said one of the authors of the study, Danielle Lawson - but this is the first experimental study showing that climate education for children increases parents' concern about climate change ”. The fact that children are able to influence adults can be explained by the banal adage that children are the voice of truth. The perception of climate change in the very young would be particularly credible since, unlike adults, they are less susceptible to the influence of the common worldview or political context. Thanks to the candor of their vision, children would be able to inspire adults and increase their concern about the ongoing climate crisis, triggering an intergenerational learning process.

To carry out the experimental study, the researchers worked with 238 students, aged between 10 and 14, and 292 parents. All of these people were initially tested to measure their levels of concern about climate change. After that some of these kids (166) took a course on climate change, while the rest did not. The study found an increase in environmental concerns in both groups, but "much more pronounced in the families of the children who took the course," said Danielle Lawson.

Schools: Environmental Education And Computer Games In Learning

The advantages of computer games in learning

Climate change is one of the huge global problems young children will have to tackle in their near future . They will have to be creative thinkers in a globalized world having to work together with other people from different countries, cultures and realities. Computer games can help them with this (As Shaffer writes in his book about How Computer Games Help Children Learn). They can help young children learn to think like scientists, engineers, urban planners, journalists, lawyers, and other innovative professionals, giving them the tools they need to survive in a changing world. Studies show that playing video games encourages critical thinking, improves motor skills and enhances key social skills like leadership and team building. They're also effective tools for teaching educational skills like algebra, biology and coding, as gaming helps to deepen learning and understanding. In the science classroom for example where our game would fit in perfectly, computer games can present unique opportunities for teachers and students, as they involve activities of observation, interpretation, simulation, inference, prediction, hypothesis, classification, and communication (Lowe, 1988). Computer games can make the scientific inquiry process more engaging for kids by providing a rich and interactive environment that challenges them to solve a complex problem in a meaningful context and enables them to gather information and evidence from multiple sources using authentic tools (An, 2015). Computer games give students the special opportunity to learn by doing and help them develop transferable knowledge and skills by allowing them to practice newly learned skills in a variety of situations.

Schools: Environmental Education And Computer Games In Learning

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4 years ago
The Kid Truly Care About Our Planet More Than Adults And Politicians
The Kid Truly Care About Our Planet More Than Adults And Politicians

The kid truly care about our planet more than adults and politicians


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4 years ago
Two-thirds of tropical rainforest destroyed or degraded globally, NGO says
Humans have degraded or destroyed roughly two-thirds of the world's original tropical rainforest cover, new data reveals – raising alarm that a key natural buffer against climate change is quickly vanishing.

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4 years ago

Sweden Cancels Bill Gates Geoengineering Plan To Block Sun & Stop Global Warming

Sweden Cancels Bill Gates Geoengineering Plan To Block Sun & Stop Global Warming

from Great Game India Bill Gates has proposed and funded a geoengineering experiment to determine whether blotting out the Sun with aerosols could reverse global warming. This experiment was undertaken by Sweden’s space agency. But now they have called off this project as they are facing a great opposition from the environmental activists. The experiment was named as the Stratospheric…

Sweden Cancels Bill Gates Geoengineering Plan To Block Sun & Stop Global Warming

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4 years ago

Coffee pulp, a coffee production byproduct, can speed up tropical forest recovery on land that had been clear cut for agricultural use. A new study by the University of Hawaii and ETH-Zurich researchers found the widely available waste material boosts plant growth substantially – 80% of the forest grew back…


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4 years ago
Toxic impact of pesticides on bees has doubled, study shows
Analysis contradicts claims that the environmental impact of pesticides is falling, say scientists

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team-legs-official - Team LEGS
Team LEGS

Hi! We're team L.E.G.S. That's our initials combined, we're not a giant pair of legs in a trenchcoat.

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