TerraWatch Essentials · · 6 min read

Last Week in Earth Observation: November 20, 2023

Advancements in weather forecasting, how to leverage multiple data sources for building EO solutions, tracking volcanic eruptions and more.

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

In this edition: Advancements in weather forecasting, how to leverage multiple data sources for building EO solutions, tracking volcanic eruptions and more.


Four Curated Things

Major developments in EO from the past week


1. Contractual Stuff: Funding, Contracts and Deals 💰

Funding

Contracts


2. Strategic Stuff: Partnerships and Announcements 📈

Partnerships

Announcements

My take: We desperately need more R&D across the weather value chain in order to prepare for a future adaptation to the changing climate. As companies like Spire, Tomorrow.io and others launch satellites to collect proprietary data to improve weather forecasting, it is equally important that companies such as Google, Microsoft, Nvidia and Huawei along with agencies such as NOAA, Met Office and ECMWF are advancing AI-based modelling capabilities.

But, if you are going to think that AI models will replace traditional models, you are wrong. AI models still depend on the traditional models to supply training data and to generate the scenarios they use as a starting point to provide a forecast. We will see a complementary relationship developing.

3. Interesting Stuff: More News 🗞️


4. Click-Worthy Stuff: Check These Out 🔗

Yellow represents the highest levels of carbon, green and blue indicate less carbon, while dark areas are not forested. (Credit: Planet)

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One EO Discussion Point

Exclusive analysis and insights from TerraWatch


5. Leveraging Multiple Data Sources for EO Solutions

Applications developed using EO generally depend on more than one data source. Data can be acquired from multiple sensors in orbit from different EO data providers as well as from other sources such as stratospheric balloons, aircraft, drones and ground sensors. As such, the final solution that provides the much-needed insights to the end-users is more often derived from a combination of different data sources.

Depending on the use case, there are several reasons for depending on more than one data source. In the initial demonstration phase, where an application is being developed, historical satellite imagery, called archived data, might be required to conduct a time-series analysis of the area of interest. At this stage, training data for machine learning models might be required, whereas data from other sources such as balloons, aircraft and drones might also be required. Typically, this data is of higher spatial resolution and hence, helps improve the machine learning algorithm to identify objects and detect patterns.

As the application development progresses, more up-to-date data might be required for real-time monitoring of the area of interest. This is where on-demand imagery, called tasked data, becomes relevant allowing the application developer to capture an image or a series of images of the area of interest on a given date or specific timeframes in the future. This tasked data when fused with existing data points enables automated real-time monitoring through EO.

There are several distributors of EO data, called EO marketplaces or EO platforms that facilitate the development of EO applications from different sources. Check out this piece, written in collaboration with UP42, an EO platform provider, on how they enable users of EO to access multiple data sources.


Scene from Space

One visual leveraging EO


6. Tracking Volcanic Eruptions

You might have seen that the town of Grindavik is on high alert as they wait to see whether a volcano rumbling under the Reykjanes peninsula will erupt.

Analysis of SAR data from the Iceye and COSMO-SkyMed satellites has shown that there has been subsidence (sinking) in and north of Grindavik, with more than 1 meter in some places. See the following image for reference - blue and purple areas indicate vertical sinking of around 1m.

If you want to know more about why and how this phenomenon occurs, check out this thread.

A satellite image heatmap of shifting elevation around grindavik, iceland
Credit: Met Office, Iceland / Alex Spahn

ICYMI - EO Summit Launched

Last week, I announced the official launch of the first-ever edition of EO Summit, a conference to bring the EO industry and end-users together, focused on commercial, enterprise and climate-related applications of EO.

Have you blocked the dates on your calendars yet? Some of you wanted some more information before you can - so here you go.

The figure below gives you some more information about EO Summit and what will take place during the event. More information, including the official website and how to purchase early-bird tickets, will be released in the next couple of weeks.

If you are interested in sponsoring the event, reply to this email or get in touch.

PS. Yes, this conference is going to be held in London, but this is NOT a UK-focused event. The aim is to bring together the GLOBAL Earth observation sector and the end-users of EO across different verticals, from around the world. The plan is to hold the event in a different location every year.


Until next time,

Aravind

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