Atmosphere - Blog Posts
Sharpening Our View of Climate Change with the Plankton, Aerosol, Cloud, ocean Ecosystem Satellite
As our planet warms, Earth’s ocean and atmosphere are changing.
Climate change has a lot of impact on the ocean, from sea level rise to marine heat waves to a loss of biodiversity. Meanwhile, greenhouse gases like carbon dioxide continue to warm our atmosphere.
NASA’s upcoming satellite, PACE, is soon to be on the case!
Set to launch on Feb. 6, 2024, the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission will help us better understand the complex systems driving the global changes that come with a warming climate.
Earth’s ocean is becoming greener due to climate change. PACE will see the ocean in more hues than ever before.
While a single phytoplankton typically can’t be seen with the naked eye, communities of trillions of phytoplankton, called blooms, can be seen from space. Blooms often take on a greenish tinge due to the pigments that phytoplankton (similar to plants on land) use to make energy through photosynthesis.
In a 2023 study, scientists found that portions of the ocean had turned greener because there were more chlorophyll-carrying phytoplankton. PACE has a hyperspectral sensor, the Ocean Color Instrument (OCI), that will be able to discern subtle shifts in hue. This will allow scientists to monitor changes in phytoplankton communities and ocean health overall due to climate change.
Phytoplankton play a key role in helping the ocean absorb carbon from the atmosphere. PACE will identify different phytoplankton species from space.
With PACE, scientists will be able to tell what phytoplankton communities are present – from space! Before, this could only be done by analyzing a sample of seawater.
Telling “who’s who” in a phytoplankton bloom is key because different phytoplankton play vastly different roles in aquatic ecosystems. They can fuel the food chain and draw down carbon dioxide from the atmosphere to photosynthesize. Some phytoplankton populations capture carbon as they die and sink to the deep ocean; others release the gas back into the atmosphere as they decay near the surface.
Studying these teeny tiny critters from space will help scientists learn how and where phytoplankton are affected by climate change, and how changes in these communities may affect other creatures and ocean ecosystems.
Climate models are one of our most powerful tools to understand how Earth is changing. PACE data will improve the data these models rely on.
The PACE mission will offer important insights on airborne particles of sea salt, smoke, human-made pollutants, and dust – collectively called aerosols – by observing how they interact with light.
With two instruments called polarimeters, SPEXone and HARP2, PACE will allow scientists to measure the size, composition, and abundance of these microscopic particles in our atmosphere. This information is crucial to figuring out how climate and air quality are changing.
PACE data will help scientists answer key climate questions, like how aerosols affect cloud formation or how ice clouds and liquid clouds differ.
It will also enable scientists to examine one of the trickiest components of climate change to model: how clouds and aerosols interact. Once PACE is operational, scientists can replace the estimates currently used to fill data gaps in climate models with measurements from the new satellite.
With a view of the whole planet every two days, PACE will track both microscopic organisms in the ocean and microscopic particles in the atmosphere. PACE’s unique view will help us learn more about the ways climate change is impacting our planet’s ocean and atmosphere.
Stay up to date on the NASA PACE blog, and make sure to follow us on Tumblr for your regular dose of sPACE!
The atmosphere is one giant chandelier, lit up every morning by the sun from the east, scattering the sun’s warmth across the earth. Even looking west on a morning, you can still feel the sun warming your face, thanks to the atmosphere.
5 Facts About Earth's Radiation Donuts 🍩
Did you know that our planet is surrounded by giant, donut-shaped clouds of radiation?
Here’s what you need to know.
1. The radiation belts are a side effect of Earth’s magnetic field
The Van Allen radiation belts exist because fast-moving charged particles get trapped inside Earth’s natural magnetic field, forming two concentric donut-shaped clouds of radiation. Other planets with global magnetic fields, like Jupiter, also have radiation belts.
2. The radiation belts were one of our first Space Age discoveries
Earth’s radiation belts were first identified in 1958 by Explorer 1, the first U.S. satellite. The inner belt, composed predominantly of protons, and the outer belt, mostly electrons, would come to be named the Van Allen Belts, after James Van Allen, the scientist who led the charge designing the instruments and studying the radiation data from Explorer 1.
3. The Van Allen Probes have spent six years exploring the radiation belts
In 2012, we launched the twin Van Allen Probes to study the radiation belts. Over the past six years, these spacecraft have orbited in and out of the belts, providing brand-new data about how the radiation belts shift and change in response to solar activity and other factors.
4. Surprise! Sometimes there are three radiation belts
Shortly after launch, the Van Allen Probes detected a previously-unknown third radiation belt, created by a bout of strong solar activity. All the extra energy directed towards Earth meant that some particles trapped in our planet’s magnetic field were swept out into the usually relatively empty region between the two Van Allen Belts, creating an additional radiation belt.
5. Swan song for the Van Allen Probes
Originally designed for a two-year mission, the Van Allen Probes have spent more than six years collecting data in the harsh radiation environment of the Van Allen Belts. In spring 2019, we’re changing their orbit to bring the perigee — the part of the orbit where the spacecraft are closest to Earth — about 190 miles lower. This ensures that the spacecraft will eventually burn up in Earth’s atmosphere, instead of orbiting forever and becoming space junk.
Because the Van Allen Probes have proven to be so hardy, they’ll continue collecting data throughout the final months of the mission until they run out of fuel. As they skim through the outer reaches of Earth’s atmosphere, scientists and engineers will also learn more about how atmospheric oxygen can degrade satellite measurements — information that can help build better satellites in the future.
Keep up with the latest on the mission on Twitter, Facebook or nasa.gov/vanallenprobes.
Our unnamed a24 project persists.
Model: @hazardousreign
Model: @hazardousreign :)
Peace is a feral feeling and that is all I know
Contemporary Bedroom Miami
Inspiration for a large contemporary master bedroom remodel featuring beige walls, a beige floor, and no fireplace
Unexpected Rain (Animation + Song)
An animation I made the background of a song video (both made by us).
Nessuno sa la verità
omg, i dont know what to say! this is beautiful!!
Very rough sketch
Пожалуйста, простите меня за упущение некоторых деталей, в течение последних дней мне не совсем хватает времени на свое хобби, поэтому вот он - результат 😻
Ваша Хорнет очень красивая, да НАСТОЛЬКО красивая, что у меня не получается ее нарисовать😭
А ещё я немного не попал/а в Ваш стиль👍🏿
В любом случае, надеюсь Вам понравится, как вышло
@tenyardstowitchyard