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Grace/ @RealScientists @realscientists
, 14 tweets, 10 min read Read on Twitter
Moving on from #Asteroids #Exoplanets #SolarEclipse #StarSpectrum we now focus on #Satellites

Sputnik 1 was the first satellite to be launched (1957). Over 1200 active satellites are currently orbiting Earth.

Check out the LIVE Satellite Map maps.esri.com/rc/sat/index.h…
Satellites come in different sizes: from the size of a lunch box to that of a small school bus.

And they are used for different purposes: Climate Monitoring, Agriculture, Telecommunications, Research.... How heavy is a satellite
Can #CitizenScientists access data from these satellites?

Yes! NASA makes available near LIVE data from many of its satellites in an interactive interface.

Allows browsing full-resolution, global satellite imagery!
worldview.earthdata.nasa.gov

Use it for your projects!
From Earth Observing System Data and Information System (EOSDIS) :

Get data from many satellites: #LandSAT #TerraModis #TerraAqua and in different bands depending on what you want to study - land, water, atmospheric emissions.... Earth Science Missions
Last night did visual astronomy thru 16 inch scope: saw M57 (Ring Nebula), M81, M82 (Bode & Cigar Galaxies), M17, Swan Nebula, Comets 2017 S3 Panstarrs and 21P/Giacobini–Zinner, Asteroid Vesta.... and many satellite passes. @rasc

Back to conversation on #SatelliteData projects
NASA's Earth Observing System Data and Information System (EOSDIS) worldview.earthdata.nasa.gov allows users to get near real time data and overlay it on a range of basemaps.

For eg: putting population density and mangrove distribution over coastline data to monitor changes.
We used #EOSDIS Real Time data from #TerraAqua satellite to track Sulfur Dioxide cloud #Bogoslof Volcano 2017eruption move from Alaska, USA to Ontario, Canada
We also used satellite data from #LandSat #TerraModis to predict droughts in Kenya-Uganda Border.

With 20 years of satellite data available on normalized difference vegetation index (NDVI) for every region of World, it is possible to compare existing data with real-time data.
We took land map of the area and overlaid it with the Vegetation data from #LandSat and #TerraModis. Added 2 more layers: Human Settlements and Population Density from NASA @ciesin database.
Analysed 7 months of normalized difference vegetation index (NDVI) data (Oct 2016 - April 2017) by noting changes in vegetation index every 5 days.

Used Stop Motion Simulation package to visually display change in vegetation along the Kenya-Uganda border.
By Jan 2017 it was clear from the simulation that Kenya will face a drought. As bordering Uganda afforded better food and fodder, it was evident that people and cattle in bordering area will migrate to Uganda.

By Feb 2017, drought was declared in Kenya and migration ensued.
This project "Drop the Drought" to predict drought and migration patterns using #NASA #satellitedata won the first place in @SpaceApps Toronto and was a global nominee.

More details: 2017.spaceappschallenge.org/challenges/our…
Satellite Data can be used to create Art projects!

We downloaded data from the Canadian Satellite #RadarSat-2 and recreated the image of "Canada 150" logo by digitally rearranging the satellite imagery.

The project won the Canadian Space Apps Challenge 2017! @csa_asc
More info about our “Yes I CAN” project that uses data from the Canadian Satellite RadarSat-2 to create a digital mosaic of the Map of Canada, the Canadian Flag, and the logo of the Celebration of 150 years of Canada's Confederation is available at:
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Related hashtags

#Asteroids #Exoplanets #SolarEclipse #StarSpectrum #Satellites #CitizenScientists #LandSat #TerraModis #TerraAqua #satellitedata #EOSDIS #Bogoslof #NASA #RadarSat

More from @realscientists see all

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A thing I am dealing with now is studying cancer in test tubes and watching my father fight cancer in real life.
I know there are many scientist and doctors who experience this very same thing.

It was and remains a watershed moment that knowing more doesnt always mean surviving more.
As someone who treats cancer objectively for most of my waking hours, I attend lecture after lecture. I hear from medical oncologists, epidemiologists who lool at population level cancer outcomes
Read 14 tweets
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Today I'd like to talk about jet streams, atmospheric turbulence, and climate change.

Why do we even have jet streams? At any fixed altitude, the north-south temperature difference between equator and pole causes the eastward wind to increase with height (wind shear).
You can check out the current positions and speeds of the jet streams interactively at earth.nullschool.net. (Change height to 250 hPa to move up to the altitudes where they typically blow the fastest.)
Jet streams move around from one day to the next and vary in strength. They play a crucial role in steering weather systems as well as aircraft (which enjoy the tailwinds on eastbound flights, but try to avoid the westbound headwinds).
Read 13 tweets
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Why does this climate change impact on phenology matter? Because it means that the regions TODAY that are best suited for the grape varieties planted there may not be the best in the coming decades
So what can we do about? Lots, it turns out.
There is lots of work in genomics, for example, to develop grape varieties that are better able to deal with climate change: ucdavis.edu/news/genomics-…
Read 15 tweets

Related threads

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The #solareclipse in #Capricorn tonight happens to coincide with #twelfthnight, the eve of #epiphany—and indeed it'll already be Epiphany for many in the eastern hemisphere by the time the eclipse perfects. I have some Thoughts™, so buckle in! #astrology
It's enough to reflect on the fact that the Epiphany story, as it's told in the Xian tradition, involves astrologers being given the gift of seeing things as they really are.
In the story, God is revealed to them, not in the halls of power and privilege but rather among the destitute and the working poor in a town that we would describe today as "flyover country."
Read 18 tweets
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Sputnik 1, the first satellite made by humans, was launched into low Earth orbit #OTD in 1957.
Image: NSSDC, NASA
The launch of Sputnik marked the beginning of the Space Age. Here, let a young Jeff Goldblum show you what the mood was like in the Pentagon.
Before young squire Goldblum was warning us about the perils of toying with dinosaur DNA (@SUEtheTrex), he was racing down the hallways of the Pentagon with the latest bit of intel on the threat from above.
Read 4 tweets
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Launched the crowdfunding campaign for my second EP 'The Only Find' on @ketto. With your support, I need to raise an amount of Rs. 70,000 within the next 30 days to cover only production costs. #FundTheOnlyFind

Link to the campaign: ketto.org/fundraiser/the…
Not being an active @Twitter user doesn't help. But lemme try. The crowdfunding campaign I'm running for my upcoming EP 'The Only Find' started on @ketto just a little over 2 weeks back. It has done tremendously well with 75% of the funds raised already! #FundTheOnlyFind (2/n)
I did not have any expectations at all, just wanted to do it so this is great! I definitely will give all the backers a shout out here once the campaign ends cause it wouldn't be possible without all those wonder women and superheroes and their love! #FundTheOnlyFind
(3/n)
Read 55 tweets
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Now that Megaplex is over, I’m like. Trying to recover, but I know I won’t be able to.

Thursday afternoon, right before I was supposed to meet Charlie to help him set up our table, my car suddenly stopped accelerating, no matter how far I pressed the gas. Luckily, I was right —
—by the mechanic I usually go to, so I inched my way to them and left my car there. The next morning, they told me that my transmission needed to be replaced. I horribly, stupidly mis-read their quoted price as $280, but it was actually $2,800. I had accidentally approved the—
—repair under the thought that it was a $300 fix, hence my panic on Friday night. I was able to call Saturday morning to tell them to cancel the repair, and they said it was okay. My problem now is that I don’t... have a car. And I have to tow my car, currently sitting at the —
Read 7 tweets
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Over a year ago we were filming for around 30 hours, I was trying to keep myself awake reading yoonmin fics. It was 5am when we had to pack the equipment, and when I was in the bus I thought finally I’m going to sleep, but then I refreshed the page and this fic was first on it
It was the update for the first chapter, and I read the prologue and then the update and suddenly I couldn’t sleep. I was incredibly tired, we had worked all day and night, but when you find something that seems made for you it doesn’t matter because I only wanted to read more
I’ve read Cotton Candy updates in class, in buses stops, on the way to uni, on my way back, reread them on my house while I waited for the next update. Read all of mintsoda’s works 💖 There’s something so genuine about the way they write the boys, I felt like watching a movie
Read 7 tweets
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First re: strategy - don't over promise… that just leads to regret. So this is where the 💯%RE thing is a big mistake, which let's face it is fundamentally about 0% nuclear. And my take is that we need nuclear *with* renewables to make this work ultimately. 2/x @simonahac
There's other stuff: other techs, non-electricity emissions,… But clearly nuclear is the big bogeyman here so I'll focus on that. + the next decade or two will make clear(er) the difference in results b/w those that insist on effectively only relying on renewables vs those… 3/x
…using nuclear+renewables+whatever-else. i.e. California vs New Jersey with New York in the middle somewhere.
This strategy then is a long play. And we must recognise there will be "collateral damage" like X% loss of the Great Barrier Reef, where X>10 4/x
Read 17 tweets

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