What Does Two Decades Of Rain And Snow Show Us?

What Does Two Decades of Rain and Snow Show Us?

You are seeing the culmination of almost twenty years of rain and snow, all at once.

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For the first time, we have combined and remastered the satellite measurements from two of our precipitation spacecraft to create our most detailed picture of our planet’s rain and snowfall. This new record will help scientists better understand normal and extreme rain and snowfall around the world and how these weather events may change in a warming climate. 

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The Most Extreme Places on Earth

Using this new two-decade record, we can see the most extreme places on Earth. 

The wettest places on our planet occur over oceans. These extremely wet locations tend to be very concentrated and over small regions.

A region off the coast of Indonesia receives on average 279 inches of rain per year.

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An area off the coast of Colombia sees on average 360 inches of rain per year.

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The driest places on Earth are more widespread. Two of the driest places on Earth are also next to cold ocean waters. In these parts of the ocean, it rains as little as it does in the desert -- they’re also known as ocean deserts! 

Just two thousand miles to the south of Colombia is one of the driest areas, the Atacama Desert in Chile that receives on average 0.64 inches of rain per year.

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Across the Atlantic Ocean, Namibia experiences on average 0.49 inches of rain a year and Egypt gets on average 0.04 inches of rain per year.

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Global Patterns

As we move from January to December, we can see the seasons shift across the world.

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During the summer in the Northern Hemisphere, massive monsoons move over India and Southeast Asia.

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We can also see dynamic swirling patterns in the Southern Ocean, which scientists consider one of our planet’s last great unknowns.

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Close-up Patterns

This new record also reveals typical patterns of rain and snow at different times of the day -- a pattern known as the diurnal cycle. 

As the Sun heats up Earth’s surface during the day, rainfall occurs over land. In Florida, sea breezes from the Gulf of Mexico and Atlantic Ocean feed the storms causing them to peak in the afternoon. At night, storms move over the ocean.

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In the winter months in the U.S. west coast, the coastal regions generally receive similar amounts of rain and snow throughout the day. Here, precipitation is driven less from the daily heating of the Sun and more from the Pacific Ocean bringing in atmospheric rivers -- corridors of intense water vapor in the atmosphere.

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This new record marks a major milestone in the effort to generate a long-term record of rain and snow. Not only does this long record improve our understanding of rain and snow as our planet changes, but it is a vital tool for other agencies and researchers to understand and predict floods, landslides, disease outbreaks and agricultural production.

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5 years ago

5 Ways the Moon Landing Changed Life on Earth

When Neil Armstrong took his first steps on the Moon 50 years ago, he famously said “that’s one small step for a man, one giant leap for mankind.” He was referring to the historic milestone of exploring beyond our own planet — but there’s also another way to think about that giant leap: the massive effort to develop technologies to safely reach, walk on the Moon and return home led to countless innovations that have improved life on Earth.

Armstrong took one small step on the lunar surface, but the Moon landing led to a giant leap forward in innovations for humanity.

Here are five examples of technology developed for the Apollo program that we’re still using today:

1. Food Safety Standards

As soon as we started planning to send astronauts into space, we faced the problem of what to feed them — and how to ensure the food was safe to eat. Can you imagine getting food poisoning on a spacecraft, hundreds of thousands of miles from home?

We teamed up with a familiar name in food production: the Pillsbury Company. The company soon realized that existing quality control methods were lacking. There was no way to be certain, without extensive testing that destroyed the sample, that the food was free of bacteria and toxins.

Pillsbury revamped its entire food-safety process, creating what became the Hazard Analysis and Critical Control Point system. Its aim was to prevent food safety problems from occurring, rather than catch them after the fact. They managed this by analyzing and controlling every link in the chain, from the raw materials to the processing equipment to the people handling the food.

Today, this is one of the space program’s most far-reaching spinoffs. Beyond keeping the astronaut food supply safe, the Hazard Analysis and Critical Point system has also been adopted around the world — and likely reduced the risk of bacteria and toxins in your local grocery store. 

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2. Digital Controls for Air and Spacecraft

The Apollo spacecraft was revolutionary for many reasons. Did you know it was the first vehicle to be controlled by a digital computer? Instead of pushrods and cables that pilots manually adjusted to manipulate the spacecraft, Apollo’s computer sent signals to actuators at the flick of a switch.

Besides being physically lighter and less cumbersome, the switch to a digital control system enabled storing large quantities of data and programming maneuvers with complex software.

Before Apollo, there were no digital computers to control airplanes either. Working together with the Navy and Draper Laboratory, we adapted the Apollo digital flight computer to work on airplanes. Today, whatever airline you might be flying, the pilot is controlling it digitally, based on the technology first developed for the flight to the Moon.

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3. Earthquake-ready Shock Absorbers

A shock absorber descended from Apollo-era dampers and computers saves lives by stabilizing buildings during earthquakes.

Apollo’s Saturn V rockets had to stay connected to the fueling tubes on the launchpad up to the very last second. That presented a challenge: how to safely move those tubes out of the way once liftoff began. Given how fast they were moving, how could we ensure they wouldn’t bounce back and smash into the vehicle?

We contracted with Taylor Devices, Inc. to develop dampers to cushion the shock, forcing the company to push conventional shock isolation technology to the limit.

Shortly after, we went back to the company for a hydraulics-based high-speed computer. For that challenge, the company came up with fluidic dampers—filled with compressible fluid—that worked even better. We later applied the same technology on the Space Shuttle’s launchpad.

The company has since adapted these fluidic dampers for buildings and bridges to help them survive earthquakes. Today, they are successfully protecting structures in some of the most quake-prone areas of the world, including Tokyo, San Francisco and Taiwan.

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4. Insulation for Space

We’ve all seen runners draped in silvery “space blankets” at the end of marathons, but did you know the material, called radiant barrier insulation, was actually created for space?

Temperatures outside of Earth’s atmosphere can fluctuate widely, from hundreds of degrees below to hundreds above zero. To better protect our astronauts, during the Apollo program we invented a new kind of effective, lightweight insulation.

We developed a method of coating mylar with a thin layer of vaporized metal particles. The resulting material had the look and weight of thin cellophane packaging, but was extremely reflective—and pound-for-pound, better than anything else available.

Today the material is still used to protect astronauts, as well as sensitive electronics, in nearly all of our missions. But it has also found countless uses on the ground, from space blankets for athletes to energy-saving insulation for buildings. It also protects essential components of MRI machines used in medicine and much, much more.

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Image courtesy of the U.S. Marines

5. Healthcare Monitors

Patients in hospitals are hooked up to sensors that send important health data to the nurse’s station and beyond — which means when an alarm goes off, the right people come running to help.

This technology saves lives every day. But before it reached the ICU, it was invented for something even more extraordinary: sending health data from space down to Earth.

When the Apollo astronauts flew to the Moon, they were hooked up to a system of sensors that sent real-time information on their blood pressure, body temperature, heart rate and more to a team on the ground.

The system was developed for us by Spacelabs Healthcare, which quickly adapted it for hospital monitoring. The company now has telemetric monitoring equipment in nearly every hospital around the world, and it is expanding further, so at-risk patients and their doctors can keep track of their health even outside the hospital.

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Only a few people have ever walked on the Moon, but the benefits of the Apollo program for the rest of us continue to ripple widely.

In the years since, we have continued to create innovations that have saved lives, helped the environment, and advanced all kinds of technology.

Now we’re going forward to the Moon with the Artemis program and on to Mars — and building ever more cutting-edge technologies to get us there. As with the many spinoffs from the Apollo era, these innovations will transform our lives for generations to come.

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


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3 years ago

When will we start seeing images from the James Webb telescope??


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9 years ago

Super Blood Moon Photo Contest

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This Sunday, Sept. 27 a Super Blood Moon will be visible in the U.S. and much of the world. This is the first time in more than 30 years that you’ll be able to witness a supermoon in combination with a lunar eclipse!

What is a supermoon? It’s a new or full moon that occurs when it is at, or near its closest approach to Earth. This event, combined with Earth’s shadow slowly swallowing the moon during the lunar eclipse, will provide for a spectacular night.

To make this lunar event even more exciting (not that it really needed it), we will be hosting a photo contest! During the event, we invite you to send us your best image of the Super Blood Moon on our Facebook page. Enter HERE.

After the entry window is closed, six finalists will be selected. These finalists will have their image voted on by the public. The winning image will be featured on our official social media platforms and on NASA.gov.

Are you interested? Here are the details:

Contest Entry Opens: Sept. 27 at 10:00 p.m. EDT

Contest Entry Closes: Sept. 28 at 10:00 a.m. EDT

Voting on Finalists Opens: Sept. 28 3:00 p.m. EDT

Voting on Finalists Closes: Sept. 29 11:59 p.m. EDT

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For more information and specifics about the lunar event, visit our page on NASA.gov, and make sure that this Sunday, Sept. 27, you get outside, look up and take some awesome pictures!

ENTER HERE: http://go.nasa.gov/superbloodmoon-contest

Full Terms and Conditions can be found HERE.

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


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7 years ago

The age-old mystery of why otherwise healthy dolphins, whales and porpoises get stranded along coasts worldwide deepens: After a collaboration between our scientists and marine biologists, new research suggests space weather is not the primary cause of animal beachings — but the research continues. The collaboration is now seeking others to join their search for the factors that send ocean mammals off course, in the hopes of perhaps one day predicting strandings before they happen.

Scientists have long sought the answer to why such animals get beached, and one recent collaboration hoped to find a clear-cut solution: Scientists from a cross-section of fields pooled massive data sets to see if disturbances to the magnetic field around Earth could be what confuses these sea creatures, known as cetaceans. Cetaceans are thought to use Earth's magnetic field to navigate. Since intense solar storms can disturb the magnetic field, the scientists wanted to determine whether they could, by extension, actually interfere with animals' internal compasses and lead them astray.

During this first attempt, the scientists – from our Goddard Space Flight Center; the International Fund for Animal Welfare, or IFAW; and the Bureau of Ocean Energy Management, or BOEM – were not able to hammer down a causal connection. Now, the team is opening their study up much wider: They're asking other scientists to participate in their work and contribute data to the search for the complex set of causes for such strandings.

Read the story: https://www.nasa.gov/beachings

Watch this video on our YouTube channel: https://youtu.be/1cAiLKP2F-U

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


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9 years ago

Colors of Earth

When we think of our globe from a distance, we generally visualize two colors: blue and green. Water and land. Mostly water, consequently, our planet’s nickname of the blue marble.

Traveling around the globe every 90 minutes covering millions of miles with a focused lens on our beautiful planet from 250 miles above, I’ve captured many beautiful colors beyond blue and green that showcase Earth in new and interesting ways. Some colors are indicative of nature like desert sands and weather like snow. Other colors tell stories of Earth’s climate in bright splashes of yellows and greens of pollen and muted grey tones and clouded filters of pollution.

Blue and green still remain vivid and beautiful colors on Earth from the vantage point of the International Space Station, but here are some other colors that have caught my eye from my orbital perspective.

Colors Of Earth

African violet

Colors Of Earth

Bahamas blues

Colors Of Earth

Tropical in Africa

Colors Of Earth

Yellow desert

Colors Of Earth

Orange in Egypt

Colors Of Earth

Red surprise 

Colors Of Earth

Snow white 

Follow my Year In Space on Twitter, Facebook and Instagram! 

5 years ago

How We’re Accelerating Our Missions to the Moon

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Our Space Launch System isn’t your average rocket. It is the only rocket that can send our Orion spacecraft, astronauts and supplies to the Moon. To accomplish this mega-feat, it has to be the most powerful rocket ever built. SLS has already marked a series of milestones moving it closer to its first launch, Artemis.

Here are four highlights you need to know about — plus one more just on the horizon.

Counting Down

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Earlier this month, Boeing technicians at our Michoud Assembly Facility in New Orleans successfully joined the top part to the core stage with the liquid hydrogen tank. The core stage will provide the most of the power to launch Artemis 1. Our 212-foot-tall core stage, the largest the we have ever built, has five major structural parts. With the addition of the liquid hydrogen tank to the forward join, four of the five parts have been bolted together. Technicians are finishing up the final part — the complex engine section — and plan to bolt it in place later this summer.  

Ready to Rumble

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This August, to be exact. That’s when the engines for Artemis 1 will be added to the core stage. Earlier this year, all the engines for the first four SLS flights were updated with controllers, tested and officially cleared “go” for launch. We’ve saved time and money by modifying 16 RS-25 engines from the space shuttle and creating a more powerful version of the solid rocket boosters that launched the shuttle. In April, the last engine from the shuttle program finished up a four-year test series that included 32 tests at our Stennis Space Center near Bay St. Louis, Mississippi. These acceptance tests proved the engines could operate at a higher thrust level necessary for deep space travel and that new, modernized flight controllers —the “brains” of the engine — are ready to send astronauts to the Moon in 2024.

Getting a Boost

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Our industry partners have completed the manufacture and checkout of 10 motor segments that will power two of the largest propellant boosters ever built. Just like the engines, these boosters are designed to be fast and powerful. Each booster burns six tons of propellant every second, generating a max thrust of 3.6 million pounds for two minutes of pure awesome. The boosters will finish assembly at our Kennedy Space Center in Florida and readied for the rocket’s first launch in 2020. In the meantime, we are well underway in completing the boosters for SLS and Orion’s second flight in 2022.

Come Together

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Meanwhile, other parts of the rocket are finished and ready for the ride to the Moon. The final piece of the upper part of the rocket, the launch vehicle stage adapter, will soon head toward Kennedy Space Center in Florida. Two other pieces, including the interim cryogenic propulsion stage that will provide the power in space to send Orion on to the Moon, have already been delivered to Kennedy.

Looking to the Future

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Our engineers evaluated thousands of designs before selecting the current SLS rocket design. Now, they are performing critical testing and using lessons learned from current assembly to ensure the initial and future designs are up to the tasks of launching exploration missions for years to come. This real-time evaluation means engineers and technicians are already cutting down on assembly time for future mission hardware, so that we and our partners can stay on target to return humans to the Moon by 2024 — to stay so we can travel on to Mars.

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


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9 years ago

Seven Reasons Why Rover Challenge is Serious Business

Prizes, awards and a year’s worth of bragging rights are at stake during our annual Human Exploration Rover Challenge. Year after year, student teams from across the world design, build and race rovers against the clock and each other.

With a space-themed obstacle course, unique rovers, competitive racing, our exhibits and dozens of international teams… it’s everything cool about STEM (science, technology, engineering and mathematics) and space exploration. 

Here are the “must-know” details for this year’s event:

1. Bumps, Bruises and Battle Scars

Seven Reasons Why Rover Challenge Is Serious Business

Our space-themed obstacle course often brings racers to their knees, literally. This daunting three-quarter-mile long course is difficult to traverse and isn’t for the faint of heart. It uses both lunar and Mars-themed obstacles to simulate the types of terrain found on distant planets, asteroids or moons.

Plus, teams must race their rovers in, on and around full-scale rockets and space vehicle exhibits on display at the U.S. Space & Rocket Center – the official visitor center for NASA’s Marshall Space Flight Center, both in Huntsville, Alabama. See just how difficult and wild the course can be in our Flickr gallery.

2. Homemade Wheels Only

Seven Reasons Why Rover Challenge Is Serious Business

Rover teams must design and fabricate their own original, or “homemade” wheels. In-Situ Resource Utilization is an important component for our future missions to Mars, asteroids or other planets.

Astronauts can never simply purchase wheels at the store… and neither can our rover teams. Teams must not use any “off-the-shelf” wheels on their rover. By wheels, this means any component used for contact, traction or mobility on the surface of the obstacle course, including, but not limited to wheels, tracks, treads or belts.

And, as in years past, teams are not allowed to incorporate inflated (or un-inflated) pneumatic tires. Inflated tires would be considered an off-the-shelf product, not eligible under the current rules.

3. New “Sample Retrieval” Component Added

Seven Reasons Why Rover Challenge Is Serious Business

Teams may choose to compete in this optional challenge, collecting four samples (liquid, small pebbles, large rocks and soil) using a mechanical arm or a grabber they design and build. Teams must collect a soil sample and liquid sample while driving their rover, as well as collect rock samples (both large and small) while off the rover, all within a 25-minute time limit.  The “Sample Retrieval” challenge highlights our deep-space exploration goals. Teams competing are eligible for the $250 prize awarded to the winner of each high school and college/university division.

4. Caution: Real STEM @work

Seven Reasons Why Rover Challenge Is Serious Business

The sights and sounds of welding, grinding and computer programming are prevalent in this hands-on, experiential activity where students solve similar problems faced by our workforce. Rover Challenge provides a unique test-bed to get students involved in real-world research and development. Their progress and success may glean potential technologies for future exploration of Mars and beyond.

5. Draws Inspiration from Apollo and Journey to Mars

Seven Reasons Why Rover Challenge Is Serious Business

Rover Challenge was inspired by the historic success of the lunar rovers from the Apollo missions, each one built by engineers and scientists at NASA Marshall. While we continue to honor our past achievements, we now highlight future accomplishments on deep-space exploration missions to Mars, asteroids or other planets. The addition of the “Sample Return” component and the Martian obstacles emphasize our commitment toward space exploration.

6. Our International Spirit is Alive and Well

Seven Reasons Why Rover Challenge Is Serious Business

Just like the International Space Station; we bring the best of several nations together to promote and celebrate space exploration. Nearly 80 teams are coming from as far away as Italy, Germany, India, Mexico, Columbia and Russia, as well as more “local” talent from the United States and Puerto Rico. View this year’s registered teams HERE.

7. Real-time Racing on Social Media

Seven Reasons Why Rover Challenge Is Serious Business

From start to finish, each racing rover team will be broadcast, live, on the Marshall Center’s Ustream channel. Plus, enjoy real-time race updates, results and awards by following Rover Challenge Twitter: @RoverChallenge

NASA’s Human Exploration Rover Challenge will take place at the U.S. Space & Rocket Center in Huntsville, Alabama, April 8-9. For event details, rules, course information and more, please visit: http://www.nasa.gov/roverchallenge

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


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5 years ago

Whats the coolest thing u have seen or discovered???!!!! Like i mean cool as in something that made u nerd out! I used to want to work for nasa but found a love for teaching art instead so i find myself nersing out over the cool research yall put out! Much love from wise county texas!


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6 years ago

What’s Up For September 2018?

Outstanding views Venus, Jupiter, Saturn and Mars with the naked eye!

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You'll have to look quickly after sunset to catch Venus. And through binoculars or a telescope, you'll see Venus's phase change dramatically during September - from nearly half phase to a larger thinner crescent!

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Jupiter, Saturn and Mars continue their brilliant appearances this month. Look southwest after sunset.

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Use the summer constellations help you trace the Milky Way.

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Sagittarius: where stars and some brighter clumps appear as steam from the teapot.

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Aquila: where the Eagle's bright Star Altair, combined with Cygnus's Deneb, and Lyra's Vega mark the Summer Triangle. 

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Cassiopeia, the familiar "w"- shaped constellation completes the constellation trail through the Summer Milky Way. Binoculars will reveal double stars, clusters and nebulae. 

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Between September 12th and the 20th, watch the Moon pass from near Venus, above Jupiter, to the left of Saturn and finally above Mars! 

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Both Neptune and brighter Uranus can be spotted with some help from a telescope this month.

What’s Up For September 2018?

Look at about 1:00 a.m. local time or later in the southeastern sky. You can find Mercury just above Earth's eastern horizon shortly before sunrise. Use the Moon as your guide on September 7 and 8th.

What’s Up For September 2018?

And although there are no major meteor showers in September, cometary dust appears in another late summer sight, the morning Zodiacal light. Try looking for it in the east on moonless mornings very close to sunrise. To learn more about the Zodiacal light, watch "What's Up" from March 2018.

What’s Up For September 2018?

Watch the full What’s Up for September Video: 

There are so many sights to see in the sky. To stay informed, subscribe to our What’s Up video series on Facebook.

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


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5 years ago

Why's your suit so colorful?


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