I think I’ve had both of these mindsets at different times
Earth is a place dominated by water, mainly oceans. It’s also a place our researchers study to understand life. Trillions of gallons of water flow freely across the surface of our blue-green planet. Ocean’s vibrant ecosystems impact our lives in many ways.
In celebration of World Oceans Day, here are a few things you might not know about these complex waterways.
The way light is absorbed and scattered throughout the ocean determines which colors it takes on. Red, orange, yellow,and green light are absorbed quickly beneath the surface, leaving blue light to be scattered and reflected back. This causes us to see various blue and violet hues.
Follow the phytoplankton! These small plant-like organisms are the beginning of the food web for most of the ocean. As phytoplankton grow and multiply, they are eaten by zooplankton, small fish and other animals. Larger animals then eat the smaller ones. The fishing industry identifies good spots by using ocean color images to locate areas rich in phytoplankton. Phytoplankton, as revealed by ocean color, frequently show scientists where ocean currents provide nutrients for plant growth.
When we look at the ocean from space, we see many different shades of blue. Using instruments that are more sensitive than the human eye, we can measure carefully the fantastic array of colors of the ocean. Different colors may reveal the presence and amount of phytoplankton, sediments and dissolved organic matter.
About 70 percent of the planet is ocean, with an average depth of more than 12,400 feet. Given that light doesn’t penetrate much deeper than 330 feet below the water’s surface (in the clearest water), most of our planet is in a perpetual state of darkness. Although dark, this part of the ocean still supports many forms of life, some of which are fed by sinking phytoplankton.
Instruments on satellites in space, hundreds of kilometers above us, can measure many things about the sea: surface winds, sea surface temperature, water color, wave height, and height of the ocean surface.
The amount of salt varies depending on location. The Atlantic Ocean is saltier than the Pacific Ocean, for instance. Most of the salt in the ocean is the same kind of salt we put on our food: sodium chloride.
It will most likely have millions (yes, millions!) of bacteria and viruses, thousands of phytoplankton cells, and even some fish eggs, baby crabs, and small worms.
Just 3.5 percent of Earth’s water is fresh—that is, with few salts in it. You can find Earth’s freshwater in our lakes, rivers, and streams, but don’t forget groundwater and glaciers. Over 68 percent of Earth’s freshwater is locked up in ice and glaciers. And another 30 percent is in groundwater.
Just like forests are considered the “lungs of the earth”, phytoplankton is known for providing the same service in the ocean! They consume carbon dioxide, dissolved in the sunlit portion of the ocean, and produce about half of the world’s oxygen.
Want to learn more about how we study the ocean? Follow @NASAEarth on twitter.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
NOT!Anatomy but still interesting.
I took this picture in Beijing last week, and posted it to my FB, asking followers to guess what the stick the cop was holding, was for.
One person got it right.
What is your favorite deep ocean fish?
It’s impossible to choose because there are so many great ones! Here are a few:
deep sea anglerfish
barreleye fish
ghost shark
“Here is how science is relevant and has an impact on your life, and more importantly, here is how it can empower you.” ~ Mónica Feliú-Mójer
In this week’s featured podcast, “Sci on the Fly,” our own AAAS Science and Technology Policy fellow Allyson Kennedy interviews neurobiologist Mónica Feliú-Mójer, communications and science outreach director at Ciencia Puerto Rico.
We’ll let them take it from here: bit.ly/2ITDur3
Above: Mónica I. Feliú-Mójer delivering the keynote talk at the University of North Carolina STEM Diversity conference, Credit: Katherine Gale Stember Feliú-Mójer is also associate director for diversity and communication training at NSF-funded iBiology, where she produced a series of videos that is rethinking the narrative of “diversity in science”: https://goo.gl/3xmTET Below: Allyson Kennedy, Ph.D., a developmental biologist and 2017-18 Science & Technology Policy fellow at NSF, in The Dickinson Lab at Virginia Commonwealth University, where she did her graduate and postdoctoral work, Credit: Allyson Kennedy, Ph.D.
https://www.nsf.gov/od/oia/activities/aaasfellows/bios/kennedy.jsp
Above: Kennedy at Virginia Commonwealth University, where she led one arm of a multidisciplinary project investigating the effects of e-cigarettes on embryonic development, Credit: Leah Small, VCU Public Affairs https://www.aaaspolicyfellowships.org/ Below: Feliú-Mójer filming a segment for Univision that featured Latinxs in higher education. She is showing the camera the model organism she used for her PhD research, the nematode C. elegans, Credit: Mónica I. Feliú-Mójer, Ph.D
This sheep skull I found in is particularly round! Look at that crazy nose. And its eye sockets are huge. Maybe its a different breed from the rest?
Flyover of Jupiters North Pole in Infrared via NASA https://ift.tt/2EM34s1
After an extensive talk with a wonderful confidant of mine, I have concluded that “Neat!” is not an appropriate response to an earnest confession of emotions.
Once I was made of stardust. Now I am made of flesh and I can experience our agreed-upon reality and said reality is exciting and beautiful and terrifying and full of interesting things to compile on a blog! / 27 / ENTP / they-them / Divination Wizard / B.E.y.O.N.D. department of Research and Development / scientist / science enthusiast / [fantasyd20 character]
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