This Past Weekend Marked The First Anniversary Of The Launch Of NASA’s Latest Ocean Color Satellite,

This past weekend marked the first anniversary of the launch of NASA’s latest ocean color satellite, PACE 🛰️! Happy birthday PACE!

pace.oceansciences.org
NASA PACE (Plankton, Aerosol, Cloud, ocean Ecosytem) blog

pace.oceansciences.org
Immersive StoryMap about the PACE mission and its assessment of ocean health, air quality, and Earth's climate
An aerial view of the Barents Sea, north of Norway and Russia, shows white, wispy cloud coverage over both land and ocean. Clouds are seen in the bottom left corner extending up towards the top left corner but dwindling as they rise. Clouds are also seen in the top right corner. A green colored land mass is seen along the bottom third of the image. In the dark blue ocean are vibrant swirls of teal and green phytoplankton blooms. Credit: NASA

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.

A global map centered on the Pacific Ocean. The map highlights the areas where ocean surface color changed. Change in color is represented by shades of green. The darkest green correlates to higher levels of change. Black dots on the map represent areas where chlorophyll levels also changed. Credit: NASA/Wanmei Liang; data from Cael, B. B., et al. (2023)

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.

Satellite image of a bright turquoise phytoplankton bloom in the Atlantic. The bloom is a large spiral shape on the right side of the image. Credit: USGS; NASA

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.

Animation of aerosol model data around the world. Plumes of red, green, yellow, blue and pink swirl over the gray landmasses and blue ocean to show carbon, sulfate, dust, sea salt, and nitrate, respectively. Credit: NASA

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.

Animation of the PACE satellite orbiting a gray globe. As the satellite orbits, colorful swaths are left in its path, indicating where the satellite has collected data. Credit: NASA

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!

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3 months ago

NSF cancels grant reviews due to WH executive order

The National Science Foundation (NSF)—the major funding agency for basic science—has canceled all grant review panels this week to comply with an executive order from the new administration. This is where independent panels of scientists discuss grant proposals they’ve reviewed for scientific merit and recommend which projects get funded to NSF project managers. A LOT of work goes into setting up and scheduling grant reviews. It will take time to reschedule these panels, delaying key decisions for many promising projects. This will wreak havoc on science grant funding for months to come.

Put simply, this action along with the halting of NIH-funded grants are blatant and reckless political attacks on science, from an administration that seeks blinding loyalty.

National Science Foundation freezes grant review in response to Trump executive orders
NPR
The National Science Foundation has canceled all grant review panels this week. It's unclear how long the pause could last.

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7 years ago

Annual Arctic sea ice minimum, 1979-2016

3 months ago

It’s no secret that we think sea otters are pretty swell. 🦦🌊

They are critical in keeping our kelp forests healthy and more resilient to climate change.

3 months ago
Aphid captured under a student microscope

Aphid captured under a student microscope.


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9 years ago

Family 2

Before...

Pets..

Health scares

Regrets?

I've already written one entry reflecting on how my family is doing without me and how I am doing without all of my family and friends. I've had to deal with a number of things that have happened at home.

Shortly before I left the United States, my grandfather faced a few health scares. By the time I left, everything had almost past, aside from some minor things. I knew there was a possibility that it could get worse while I was abroad, but I also knew that going abroad would not change any outcome.

Then, almost a month and a half ago, my family had to put one of our dogs to sleep. It was very sudden and everything happened in a few days. What made this more surprising is that our oldest dog is clearly showing his age and we all knew it was possible that I may not see him again, but our other dog is a little bit younger, but he always acts like a puppy so you would never know that he was ten years old. I even remember telling him that I didn’t have to worry about him because it seemed like he was in perfect health. Of course, I feel guilty about saying this, but there is no way I or anyone else could have known what was going to happen.

A few weeks before that, my dad broke his ankle and leg, and would be out of work for weeks. For me, the biggest impact this had was related to money, since my dad is the main bread winner in our family by a mile and it's not like we are rich or very comfortable to begin with. Now, today (Mother's Day in the U.S.), my mom called me because something else happened and my dad has been in critical condition all day and at this point, there is still a lot of uncertainty. It is harder to deal with since I am abroad, especially since a lot of people at SU have finished the semester and have been able to go home.

I think that all of this is plenty of reason to regret going abroad.....but I don't. Even though I lot has happened and is still happening, there is not much I could have done if I was home. More than likely, all of this would have still happened because stuff just happens in life. Don’t get me wrong, it is harder being abroad and being about from all of my friends and family but right now, I'm just reminding myself that stuff like this happens in life and often under the worst of circumstances (not that there is a best of circumstances).

7 years ago

Why Octopuses Could Never Disappoint 

These cephalopods, who telegraph their moods by color changes and solve problems by using tools, have surprised me again and again.

And now it’s happened again. An octopus has astonished me.

This time, it’s a common octopus caught on camera in South African waters by a dive team for the documentary Blue Planet II, currently airing on BBC America in the United States.

The action is dramatic. A pyjama shark seizes the octopus. Just as the situation begins to look dire, the octopus stuffs the shark’s gills shut using its sinuous arms, making it impossible for the shark to breathe — until the shark releases it.


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7 years ago
Dinoflagellates The Dinoflagellates Are A Large Group Of Flagellate Protists. Most Are Marine Plankton,

Dinoflagellates The dinoflagellates are a large group of flagellate protists. Most are marine plankton, but they are common in fresh water habitats as well. They are characterized by two flagella, one girdling the cell and the other trailing the cell. Some dinoflagellates exist in coral, in a symbiotic relationship. These dinoflagellates are termed the zooxanthellae. Other dinoflagellates occur in such high numbers that the water is colored red, a phenomenon known as a red tide.

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simplyphytoplankton - Simply Phytoplankton
Simply Phytoplankton

Blog dedicted to phytoplankton. Phytoplankton are microscopic organisms that are responsible for half of the photosynthesis that occurs on Earth. Oh, and they look like art... Follow to learn more about these amazing litter critters! Caution: Will share other ocean science posts!Run by an oceanographer and phytoplankton expert. Currently a postdoctoral researcher.Profile image: False Colored SEM image of Emiliania huxleyi, a coccolithophore, and the subject of my doctoral work. Credit: Steve Gschmeissner/ Science Photo Library/ Getty ImagesHeader image: Satellite image of a phytoplankton bloom off the Alaskan Coast, in the Chukchi SeaCredit: NASA image by Norman Kuring/NASA's Ocean Color Web https://earthobservatory.nasa.gov/images/92412/churning-in-the-chukchi-sea

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