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Spring 2026 - In This Issue:

Spotlight | Updates | Action | Community | Events | News | Research | Tutorials | Tools | Images | Outreach | Team | Swag

Mission Spotlight

New NASA Views of Earth, From (S)PACE

New NASA Views of Earth, From (S)PACE

To dig into the mysteries of our planet Earth, NASA has a fleet of satellites in orbit, gathering data around the clock. Join one of these satellites — the Plankton, Aerosol, Cloud, ocean Ecosystem satellite (PACE), which launched in February 2024 — to explore its unique views of our home planet's ocean, atmosphere, and land surfaces.

Read more »

Watch the Video

Mission Updates

Data Processing Updates

COMPLETE

SPEXone and HARP2 V4 Level-1C Reprocessing

The PACE Science Data Segment recently completed a reprocessing of the SPEXone and HARP2 Level-1C products. This V4 reprocessing is a significant update of the calibration for both sensors, which greatly improves radiometric consistency across sensors as well as performance of geophysical retrieval algorithms.

Available Data Collections:

Forward stream production of V3 L1C has now ceased, and the existing collection will be staged for deletion after a brief waiting period. Reprocessing of Level-2 and Level-3 polarimetry products utilizing the V4 calibrations (V4.0) is expected to commence in the coming weeks, including RemoTAP and MAPOL aerosol and ocean color products from SPEXone, and MAPOL and GPC aerosol, ocean color, and cloud products from HARP2.

Release notes:

COMPLETE

OCI V3.2 Ocean Color Products Reprocessing

The V3.2 reprocessing of all OCI ocean color products was recently initiated to correct some recently identified algorithm implementation errors, resulting in reduced cross-scan artifacts. Collections include Ocean Color AOP, IOP, BGC, Phytoplankton Community Composition (MOANA), Net Primary Production (NPP_Cafe) and PAR.

Key Change in V3.2:

Global Level-3 Mapped products for the AOP, IOP, and BGC suites are now provided as one mapped file per suite.

More details:

Data Access

V4 L1C and V3.2 L2/3/4 products available via:

Direct Access
File Search

Products are slowly making their way to the NASA EarthDataCloud (EDC).

Earthdata Web Unification

NASA Earth science data sites are being consolidated under the Earthdata domain from now until end of 2026, which will impact Ocean Color Web resources. Thank you for your patience as we make this transition.

Learn More »

How is the PACE Ocean Color Instrument (OCI) performing?

The PACE OCI Calibration Team continuously evaluates the on-orbit radiometric performance of OCI.

View OCI Trending Plots »

PACE in Action

See how PACE data is being used around the world to advance ocean science and applications.

Off Uruguay PACE

science.nasa.gov

Off Uruguay, PACE Partners Connect Data from Satellite and Sea

PACE partners combine satellite observations with in-situ ocean measurements off the coast of Uruguay, connecting data from space and sea.

Read More »
Sailing for Science Southern Ocean

science.nasa.gov

Sailing for Science: A 50-Day Mission to Study the Southern Ocean

Scientists embark on a 50-day sailing mission to study the Southern Ocean, collecting data that complements PACE satellite observations.

Read More »

Community Showcase

Celebrating our community of researchers, educators, and ocean science enthusiasts who use PACE data to advance our understanding of Earth's oceans.

Fish-PACE Working Group

NEW WORKING GROUP

New NOAA Fisheries & Ocean Ecosystems Working Group

The Fish-PACE User Group serves as a forum for connecting, supporting, and growing the fisheries and ocean ecosystem user community around NASA's PACE mission and new ocean color products, with the goal to advance applications for fisheries, marine ecosystems, and coastal decision-making.

Learn More »
PACE in the Classroom

EDUCATION

Bringing PACE Into the Classroom

By Lisa Stewart

Read More »
PACE is BATS

OCEAN CARBON

PACE is BATS for Ocean's Carbon Story

By Sara Blumberg

Read More »

Calling QGIS Users: Help Shape a Free PACE + QGIS Training Course!

PACE QGIS Course

A new free, asynchronous course is in development at Ocean Science Analytics, a PACE Early Adopter, to help the ocean science community work with NASA PACE satellite data in QGIS.

To sync content and community needs, we are asking anyone with an interest in PACE data (even if you have not used it yet) across all sectors and experience levels to complete a short 5–8 minute survey. Your responses will directly shape what topics and data products the course prioritizes.

All responses are anonymous.

Take the Survey Now! »

SHARE YOUR PACE STORY!

We're collecting stories to highlight the real-world value of PACE
across public and private sector science and applications efforts worldwide.

Share your research breakthroughs, creative applications, or inspiring discoveries.
We want to help spread the word about your impact!

Connect with us at: [email protected]

Upcoming Events & Opportunities

Don't miss these upcoming conferences, workshops, and opportunities to connect with the PACE community.

July 2, July 16 & Aug. 20, 2026 Help Hub Summer Hotline Series | Virtual | July 2: General PACE data Questions | July 16: PACE Atmosphere and Land | Aug. 20: PACE Ocean and Freshwater | Register Now »
Postponed, date TBD Fish-PACE Onboarding: Intro to earthaccess Python package and on-boarding to the CryoCloud JupyterHub for Fish-PACE members | Register (all welcome!) »
July 10, 17, 24 & 31, 2026 CoastWatch Satellite 201 Summer Lecture Series | Virtual, free to all | Fridays 11am-1pm (Pacific Time). July 17th: Ryan Vandermeulen presents on PACE products beyond Chlorophyll for fisheries and ocean ecosystem applications | Register »
Aug. 24-28, 2026 OceanHackWeek 2026 | Bamfield Marine Sciences Centre, BC, Canada | Applications open May 15. Eli Holmes (NOAA) will mentor a Fish-PACE focused project. Great event for early career scientists | Learn More and Apply »
Sept. 3, 2026 PACE Community Quarterly Telecon: Air Quality Monitoring from Space
Watch your PACE Community email & our Events page for PACE community event news!

Opportunities

Apply Now 2026 James E. Cloern Early Career Publication Honor – Previously known as the Limnology & Oceanography Letters Early Career Publication Honor. Pays the publication cost of open-access articles authored by students and early career professionals in need. | Apply Now »

PACE in the News

People are talking about PACE!

Caribbean Colors Jersey Shore

foxweather.com

Caribbean Colors Invade the Jersey Shore: Massive Phytoplankton Bloom Turns Atlantic Turquoise

A massive phytoplankton bloom turned the Atlantic Ocean turquoise off the Jersey Shore, with NASA's PACE satellite capturing stunning imagery of the phenomenon.

Watch Story »
Megaberg Phytoplankton Bloom

earth.com

After 40 years, 'megaberg' triggers massive phytoplankton bloom before vanishing forever

The iconic Antarctic iceberg A-23A triggers a massive phytoplankton bloom as it melts, captured by NASA's PACE satellite.

Read More »
Geoengineering Gulf of Maine

cleantechnica.com

Geoengineering The Gulf Of Maine

PACE data contributes to ocean geoengineering research in the Gulf of Maine, providing unprecedented detail on marine ecosystem dynamics.

Read More »
NASA AI Harmful Algae

nasa.gov

NASA-developed AI Could Help Track Harmful Algae

A new NASA-developed AI system leverages PACE satellite data to track and predict harmful algal bloom events with unprecedented accuracy.

Read More »
Fisheries Research Partnership

seafoodsource.com

NASA to provide satellite data for fisheries research in new partnership

NASA announces a new partnership to integrate PACE satellite data into fisheries research and marine ecosystem monitoring.

Read More »
Spring Northwest Atlantic

earthdata.nasa.gov

Spring Has Sprung in the Northwest Atlantic

PACE captures the arrival of spring in the Northwest Atlantic through stunning imagery of seasonal phytoplankton blooms and ocean color changes.

Read More »
NASA Satellite Air Pollution

earth.com

NASA satellite shows exactly where air pollution begins

PACE satellite data pinpoints the exact origin of air pollution sources, offering a powerful new tool for environmental monitoring and policy.

Read More »
Glacier Melt Greenland

colorado.edu

Using aerospace technology to study glacier melt in Greenland

Aerospace technology including PACE satellite observations is being used to study glacier melt dynamics in Greenland.

Read More »

Research Highlights

Discover the latest scientific breakthroughs and publications featuring PACE data. Researchers are pushing the boundaries of ocean and atmospheric science.

Hyperspectral retrieval of phytoplankton absorption and community composition from NASA's PACE-OCI in estuarine–coastal waters using a hybrid framework combining mixture-of-experts and Variational Autoencoder

Bai et al. (2026) Remote Sens. Environ.

Capturing Mesoscale and Submesoscale Ocean Fronts in the Gulf of Mexico With Gaussian Mixture Modeling and Satellite Observations

Cruz and Subrahmanyam (2026) Earth Space Sci

Biophysical Dynamics of Mesoscale Eddies: Coincident Observations from SWOT and PACE

Dove and Freilich (2026) Oceanography

Observing fall foliage with PACE pigment indices

Huemmrich and Caplan (2026) Remote Sens. Lett.

Instrument-embedded sampling oscilloscope for in-situ waveform characterization and its implementation in the Ocean Color Instrument of the NASA PACE mission

Jepsen et al. (2026) IEEE Trans. Geosci. Remote Sens.

Initial Assessment of the Detectability of Cyanotoxin Occurrence Using PACE Satellite Observations

Karunakaran et al. (2026) Geophys. Res. Lett.

Advancing CyanoHAB Monitoring with Hyperspectral Data from NASA PACE: First Results and Validation

Kumar et al. (2026) Int. J. Appl. Earth Obs. Geoinf.

Fusing Multi- and Hyperspectral Satellite Data for Harmful Algal Bloom Monitoring With Self-Supervised and Hierarchical Deep Learning

LaHaye et al. (2026) Earth Space Sci

Spectral dependence of the depolarization ratio of pure water

Neupane et al. (2026) Applied Optics

PACE (Plankton, Aerosol, Cloud, ocean Ecosystem): Preliminary Analysis of the Consistency of Remote Sensing Reflectance Products Across Aquatic Systems

Paulino et al. (2026) ISPRS J. Photogramm. Remote Sens.

Evaluation of cloud height, optical thickness, and phase retrievals from the CHROMA algorithm applied to Sentinel-3 OLCI data

Sayer et al. (2026) Atmos. Meas. Tech.

Phytoplankton Biomass Dynamics in Wet (2019) and Dry (2023) Years in the Lake Pontchartrain Estuary, Louisiana, from Sentinel-2 MSI and PACE-OCI Observations

Shrestha et al. (2026) Sci. Total Environ.

An approach for merging colored dissolved organic matter absorption measurements from complementary benchtop spectrometers

Trolley et al. (2026) Limnol. Oceanogr.: Methods

Advancing Earth System Science With the NASA Plankton, Aerosol, Cloud, Ocean Ecosystem (PACE) Satellite Mission

Werdell et al. (2026) Global Change Biology

Volume scattering function measured in the oceans and lakes (2009–2024)

Xiong et al. (2026) Limnol. Oceanogr. Lett.

Capabilities of PACE Ocean Color Instrument (OCI) for phytoplankton pigments of inland lakes

Xu et al. (2026) Int. J. Appl. Earth Obs. Geoinf.

Global estimation of phytoplankton functional types using PACE OCI hyperspectral data and a novel deep ensemble learning approach

Zhang et al. (2026) Int. J. Appl. Earth Obs. Geoinf.

Backscattering by Particles of Sizes <0.2 μm in Seawater

Zhang and Xiong (2026) Geophys. Res. Lett.

Help Hub Corner

Satellite data processing can be difficult - we're here to help you climb out of that hole.

Help Hub Logo

PACE Help Hub Hotline - Summer Chats

Your chance to ask ANY questions to PACE scientists and get support.

Learn more and register now!

Learn More and Register »
Help Hub Hotline

Tools and Resources

NEW RELEASE

SeaDAS 11.0.0

We are pleased to announce the release of SeaDAS 11.0.0 that happened on April 13, 2026.

SeaDAS Screenshot

Highlights of what's new:

  • Improved Data Handling – Correct support for L3m datasets that cross the dateline, improved handling of HARP2 and SPEXone Level-2 products with 4D bands, and fixes for CZCS L2 image orientation.
  • Map Gridlines Enhancements – Improved rendering for global datasets and dateline-crossing scenes, with better labeling and performance for large-area visualizations.
  • Earthdata Cloud Spatial Subsetting – New OB_CLOUD Spatial Subset Tool retrieves Level-2 subsets from Earthdata Cloud via Harmony L2SS. Supports selection of individual 2D variables (e.g., chlor_a). Spatial subsetting preserves full data and should be used for quality-controlled analysis.
  • Enhanced OB_CLOUD Data Browser – Added "Regions" selector for bounded geographic subsetting and improved integration with the Spatial Subset Tool.
  • GPT Cross-Platform Support – Graph Processing Tool (GPT) now fully functional on Windows, macOS, and Linux.
  • Platform and Installer Updates – Integrated with SNAP 13 and Java 21. Installers available with and without bundled JRE for Windows, Linux, and Apple Silicon macOS. Intel-based Mac support has been discontinued.

SeaDAS and all related documentation are available on NASA Earthdata.

Read Full v11.0.0 Release Notes »

New Tutorials

PACE in Images

Gulf of Thailand & Andaman Sea

Gulf of Thailand & Andaman Sea

The Gulf of Tonkin is a semi-enclosed basin with Hainan Island (China) located to the southeast. Although the gulf is relatively shallow with a depth of... Learn More »

Gulf of Tonkin

Gulf of Tonkin

The Gulf of Tonkin is a semi-enclosed basin with Hainan Island (China) located to the southeast. Although the gulf is relatively shallow with a depth of less than 100 m... Learn More »

New Zealand Surrounded by Clouds

New Zealand Surrounded by Clouds

New Zealand's North and South Islands are surrounded by various types of clouds including icy high-level cirrus, open cell cumulus with a "bubbly" appearance... Learn More »

View Full PACE Image Gallery

Outreach & Engagement

The PACE team has been busy with outreach activities! Here are some highlights:

PACE Special Session at ForestSAT 2026

May 7, 2026 • Gainesville, Florida

PACE Applications and collaborators convened a special session at ForestSAT 2026 titled "Applications of NASA's PACE mission: new insights for ecosystem science." Speakers and session co-chairs included Skye Caplan, Fred Huemmrich, Morgaine McKibben, and Emil Cherrington, covering the PACE mission, terrestrial science applications, and data tools for Python, GIS, and Google Earth Engine users. A companion virtual pre-conference workshop on PACE spectral and land data was held earlier in the year.

ASPRS Mid-South Regional Conference

On March 30th, Morgaine McKibben gave a keynote presentation on "NASA's PACE Mission: Advancing Earth Observations and their Applications" at the ASPRS Imaging and Geospatial Information Society Mid-South Regional conference, hosted at Oak Ridge National Labs in Oak Ridge, TN.

ESA-ESRIN Sentinel 3 Validation Team Meeting

On March 31st, Violeta Sanjuan Calzado delivered an invited talk on "In-water AOP data requirements, workflows and results for PACE" at the ESA-ESRIN Sentinel 3 Validation Team Meeting in Frascati, Rome, March 30 - April 1.

ESA/JAXA EarthCARE Mission Hackathon

On April 20-24th, Sean Foley, Kirk Knobelspiesse, Anna Windle, Meng Gao, Chamara Rajapakshe, and Jeremy Werdell supported PACE mission participation in an ESA/JAXA EarthCARE mission Hackathon held at ESA/ESRIN in Frascati, Italy. The team gave a demo of pace-earthcare-matchups (PEM), a tool developed to find coincident PACE and EarthCARE observations.

Gulf of America Alliance

On May 4-7th, Bingqing Liu was invited to present in the Water Resources and Harmful Algal Bloom (HAB) sessions organized by the Gulf of America Alliance. The presentation showcased emerging applications of AI and PACE hyperspectral observations for monitoring harmful algal blooms, phytoplankton dynamics, and coastal water quality.

The Bishops School, San Diego

On May 7th, Bridget Seegers presented to 8th grade students at The Bishops School in San Diego, California. The presentation "Exploring Water" covered NASA Earth Science, ocean color research, and PACE mission data. Students explored a live and local plankton sample. The audience included over 100 students.

LP DAAC User Working Group

On May 18th, Bingqing Liu was invited as a new member of the LP DAAC User Working Group to share user experiences and recommendations for future data products. She highlighted the use of HyperCoast, an open-source platform for visualization and analysis of hyperspectral datasets including PACE observations.

Join the Library Scavenger Hunt Program

PACE team members have launched a new library-based scavenger hunt designed to introduce patrons to the fascinating world of phytoplankton.

Interested in volunteering? Contact Sara Blumberg

Behind the Scenes

Meet the dedicated team members behind PACE who bring expertise and passion to our mission.

James Allen

Early Career Spotlight

James Allen

James Allen was featured in NASA's Sciences and Exploration Directorate's Early Career Spotlight, highlighting his contributions to PACE science and his journey as an early career scientist at NASA Goddard.

Read Full Spotlight »

Get PACE Swag!

PACE Store

Land's End Store - Always Open

Customize a wide array of garments with mission, instrument and agency logos

Shop now »

Newsletter Team

This newsletter is brought to you by the
PACE Applications and Communications Teams:

Carina Poulin, Morgaine McKibben, and Sara Blumberg

Have something for the PACE newsletter?

Contact us at [email protected]

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NASA Goddard Space Flight Center

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