Weekly Newsletter · · 4 min read

Last Week in Earth Observation: March 17, 2025

Unexpected Sea Level Rise, EO for Carbon Markets and more

Welcome to a new edition of ‘Last Week in Earth Observation’, containing a summary of major developments in EO from the last week and some exclusive analysis and insights from TerraWatch.


Four Curated Things

Major developments in EO from the past week


💰 Contractual Stuff: Funding, Contracts and Deals

Funding

Contracts

📈 Strategic Stuff: Partnerships and Announcements

Announcements

Partnerships

🗞️ Interesting Stuff: More News

🔗 Click-Worthy Stuff: Check These Out

Credit: Global Forest Watch

EO Summit: Keynote Speakers

I am excited to start the speaker announcements for EO Summit 2025 taking place in New York City on June 10 - 11:

Stay tuned for more updates on the speakers and the program!

Tickets are on sale, reserve your place now!

One Discussion Point

Exclusive analysis and insights from TerraWatch


EO for Carbon Markets

Satellites are fundamental to understanding the carbon cycle - from monitoring the carbon dioxide emissions that escape to the atmosphere to estimating the level of carbon stored in the natural environment (trees, soil, marine ecosystems). Called carbon flux, satellites are a crucial part of the system that tracks the direction and rate of flow of carbon between the oceans the atmosphere, the land, and other living things.

To simplify the role of satellites in monitoring and observing the carbon cycle, the elements of observation can be classified into three: blue carbon, forest carbon and soil carbon.

The figure below shows the three categories of carbon that can be monitored and estimated using satellite data, along with examples of what they represent. Note that the figure does not attempt to demonstrate the carbon cycle in itself, but rather lists aspects of the carbon cycle that can be monitored using EO.

EO and Carbon Monitoring

The decline in the growth of voluntary carbon markets amid contiuning scrutiny raises a larger question of whether this market will continue to grow and exist in its current form, over the coming years. While carbon projects related to agriculture and soil carbon might be less prone to greenwashing and junk credits, especially compared to forest carbon projects, the overall negative connotations associated with carbon offsets would require time to shave off.

From a technical perspective, however, the need for EO is not under threat. Satellites are the most objective and scalable mode of remote sensing technology, considering the global nature of carbon projects. While the need and willingness to pay for commercial EO data is still under validation, given that several open EO data sources exist that get the job done, the need for continuous monitoring and higher resolution solutions will continue to grow, especially if the carbon markets recover and demand rises.

Become a paid subscriber to read the full piece which includes a deep dive on the role of EO in the voluntary carbon market, the importance of EO in making carbon markets work and the overall commercial landscape.

Scene from Space

One visual leveraging EO


Unexpected Sea Level Rise in 2024

According to a NASA-led analysis, global sea levels rose faster than expected in 2024 - last year’s rate of rise was 0.23 inches (0.59 centimeters) per year, compared to the expected rate of 0.17 inches (0.43 centimeters) per year.

This long-term record is thanks to an uninterrupted series of ocean-observing satellites starting with TOPEX/Poseidon in 1992 to the current ocean-observing satellite in that series, Sentinel-6 Michael Freilich, launched in 2020.

Credit: NASA

Until next time,

Aravind.

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